CLAIM OF PRIORITY

This patent application claims the benefit of priority to U.S. Provisional Application Serial No. 62/706,823, filed September 1 1, 2020, which is incorporated by reference herein in its entirety.

COPYRIGHT NOTICE

A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever. The following notice applies to the software and data as described below and in the drawings that form a part of this document: Copyright MutedMedical, LLC of Utah. All Rights Reserved.

TECHNICAL FIELD

This document pertains generally, but not by way of limitation, to devices for sonic suppression of medical liquid pumping or draining equipment.

BACKGROUND

In medical procedures (e.g., surgical, dental or the like) access is made to one or more locations of the patient. For instance, access is provided to locations of interest including surgical incisions, cavities, oral cavities or the like. While conducting procedures fluids are generated, including body fluids, blood, water or the like.

To facilitate the procedures the fluids are removed from the locations of interest. In one example, the fluids are drained from a site with a drape collection bag that allows the fluids to collect by gravity. A suction line extends from the drape collection bag to a source of suction force, such as a pump configured to withdraw the collected fluids along with ambient air within the bag. The pump mechanism is in communication with each of the suction line and the collection bag (through the suction line) and draws the fluid and ambient air into a reservoir, chamber or the like that is later disposed.

OVERVIEW

The present inventors have recognized, among other things, that a problem to be solved includes automatically minimizing the noise of medical liquid collection systems including pumps that withdraw fluids from locations of interest in the body, mouth or the like and collection devices (e.g., bags) associated with the same. In one example, the source of suction consistently draws medical liquid and ambient fluid (e.g., a gas, such as ambient atmosphere) from a collection device, such as a collection bag, and an associated suction line. As body fluids, operating fluids (e.g., saline) or the like are collected the fluids are withdrawn from the collection device and stored within a storage reservoir.

The example medical liquid collection system including the suction source, suction line and collection device generates significant noise. Medical liquid is drawn into the suction line as it is collected, and mixes with ambient fluids, such as air. For instance, medical liquid accumulates within the collection device in an intermittent fashion and is then sucked into the suction line in an ongoing manner along with the ambient fluids (e.g., air). The mixed flow of collected medical liquid and gas effectively varies the geometry of the suction line, and in some examples as air travels over medical liquid in the suction line, generates significant noise, including whistling or gurgling in the suction line and broadcast from the end of the suction line connected with the collection device.

Technicians address the noise in some examples by placing a towel, sponge or other absorbent material in the collection device, such as a collection bag. The absorbent material partially muffles sound from the suction line caused by the mixed medical liquid and air drawn through the suction line. The quality of muffling varies according to the positioning of the absorbent material; a poorly positioned towel thereby muffles sound poorly from the suction line. Over time, and depending on the procedure, the absorbent material becomes saturated, and it not removed or replaced in some examples becomes sufficiently heavy to damage the collection device (e g., a collection bag) or causes decoupling between the prepared access to the patient and a surgical drape, film or the like. In some examples parts of the patient that have not been sanitized prior to the procedure expose the otherwise prepared access unsanitary conditions.

In other examples, a clamp is coupled along the suction line that blocks noise from the suction device. The clamped suction line accumulates fluid and when filled the technician opens the clamp. The suction pump draws the accumulated fluid into a collection reservoir The accumulation of fluid minimizes noise otherwise generated from ambient fluid that mixes with intermittently received fluid and causes whistling or gurgling noises. Instead, the accumulated fluid is drawn at one time to the inline storage reservoir. With the clamp, a technician (e.g., a nurse or surgical technician) observes a collection bag or suction line and opens the clamp when filled, otherwise the suction line or collection bag overflows. After evacuation of the bag or tube the technician reapplies the clamp to minimize noise otherwise caused by mixing intermittently delivered medical liquids and ambient fluid, the suction line begins accumulation of medical liquid again, and the technician continues to observe the collection bag or suction line for filling and repeats operation of the clamp.

The present subject matter provides a solution to these problems, such as by a medical sound muffler configured to abate noise in a suction line. The medical sound muffler in one example includes a muffler housing having a valve operator, such as a muffler float provided in a float channel. A muffler intake is in communication with an upstream portion of a suction line and the float channel, for instance having a muffler sump. A muffler exhaust is in communication with the float channel and a downstream source of suction (e g., with a downstream portion of the suction line). The valve operator, such as the muffler float, closes the muffler in a closed configuration. For instance, the muffler float closes the muffler exhaust and prevents fluid flow to the exhaust while at the same time blocking noise from the suction device, such as a suction pump. Additionally, the float channel (the muffler sump) accumulates fluid because of the muffler float (or other example valve operator described herein and their equivalents) closing the muffler exhaust instead of allowing intermittent medical liquid to flow and mix with ambient gas (such as atmosphere). Intermittent flow of collected medical liquids and ambient gas in the suction line and corresponding noise generated from the mixing of the same is thereby minimized (e.g., decreased or eliminated).

In one example, the muffler float is held in the closed configuration through one or more of gravity or suction force applied to the float from the muffler exhaust. For instance, the muffler exhaust includes a float seat having a profile complementary to the profile of the muffler float. Suction force from the muffler exhaust retains the muffler float along the complementary float seat and thereby closes the muffler exhaust while collected medical liquid accumulates in the muffler sump. As the float channel fills with collected medical liquid buoyant force is gradually increased on the muffler float. With sufficient buoyant force (from the accumulating medical liquid) the suction force is overcome and the muffler float is decoupled from the muffler exhaust to open the muffler exhaust.

Suction force from the (now open) muffler exhaust draws the accumulated liquid out of the muffler sump. Because the muffler sump is full of accumulated medical liquid, the open muffler exhaust draws a larger quantity of medical liquid relative to ambient gas (e.g., ambient air). Accordingly, mixing of the medical liquid and gas and the attendant noise generated with the mixing is thereby minimized. Instead, the medical sound muffler closes the muffler exhaust until medical liquid is accumulated, and with the muffler exhaust opened accumulated liquid is delivered in a stable ongoing manner until medical liquid level in the muffler sump sufficiently drops. The muffler then reseats with the muffler exhaust and closes the muffler exhaust to facilitate medical liquid accumulation.

In another example, a medical sound muffler includes a muffler shunt configured to provide a supplemental flow of ambient gas to the suction line and thereby attenuate suction in the suction line that, along with mixing medical liquid and gas, generates noise in the suction line. The attenuated suction continues to pull the collected medical liquid (e.g., to a collection reservoir) while minimizing whistling and gurgling of mixing medical liquid and gas otherwise caused by increased suction in the suction line. For instance, suction is decreased upstream from the muffler shunt toward a collection device, such as a collection bag, and accordingly noise otherwise generated from the suction line and the collection bag is minimized.

In one example, the muffler shunt is used alone (e.g., without the muffler float). In another example, the muffler shunt is used with the muffler float described herein. In a system including the muffler float the muffler shunt includes a shunt port in communication with the muffler exhaust downstream from the muffler float and the float channel. While the muffler float is in the closed configuration the muffler shunt supplies supplemental fluid (e.g., ambient air) to the muffler exhaust to facilitate continued suction through the associated portion of the suction line. Additionally, the muffler shunt attenuates the suction on the muffler float at the muffler exhaust that otherwise frustrates unseating of the muffler float because of buoyant forces. For instance, the muffler shunt permits the muffler float to freely unseat and rise with increased medical liquid levels without the suction force artificially retaining the float in the closed configuration (despite buoyant force that would otherwise unseat the muffler float). Further, upon opening of the muffler float the muffler shunt supplements the suction line with ambient fluid (e.g., air) to attenuate suction and minimize noise otherwise generated because of mixing of the collected medical liquid and ambient fluid.

In still other examples, a medical sound muffler includes one or more valve operators (the muffler float being one example) configured to abate noise in a suction line. As described herein the valve operators are components of valve assemblies (the muffler housing an example valve assembly) in communication with the suction line. In various examples, the valve assemblies and associated valve operators include, but are not limited to, the muffler float, piston operator (e.g., kinetically actuated, solenoid actuated, mechanically actuated or the like), ball valve operator, diaphragm operator or the like. This overview is intended to provide an overview of subject matter ot the present patent application. It is not intended to provide an exclusive or exhaustive explanation of the invention. The detailed description is included to provide further information about the present patent application.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document.

Figure 1 is a perspective view of one example of a medical sound muffler.

Figure 2 is an exploded view of the medical sound muffler of Figure 1.

Figure 3 A is a sectional view of the m edical sound muffler of Figure 1 in an example closed configuration.

Figure 3B is a sectional view of the medical sound muffler of Figure 1 in an example open configuration.

Figure 4 is a sectional view of the medical sound muffler of Figure 1 including forces incident on a muffler float.

Figure 5 is schematic flow diagram of the medical sound muffler.

Figure 6 is a sectional view showing another example of a medical sound muffler, a muffler shunt.

Figure 7 is a sectional view ⁷ of the muffler shunt of Figure 6.

Figure 8 is a schematic diagram of one example of a fluid collection system including example views of medical liquid and gas mixing.

Figure 9 is a schematic diagram of an example fluid collection system including a muffler float in a closed configuration and a muffler shunt.

Figure 10 is a schematic diagram of the fluid collection system of Figure 9 with the muffler float in an open configuration. Figure 11 A is a first sectional view of a third example ot a medical sound muffler having a kinetically driven piston in a closed configuration.

Figure 1 IB is a second sectional view of the medical sound muffler of Figure 11 A in an open configuration.

Figure 12 is a sectional view ⁷ of a fourth example of a medical sound muffler including a valve actuator.

Figure 13A is a perspective view ⁷ of a fifth example of a medical sound muffler including another example of a valve actuator.

Figure 13B is a perspective view of the medical sound muffler of Figure 13 A in an open configuration.

Figure 14A is a first sectional view of a sixth example of a medical sound muffler including a diaphragm valve operator in an open configuration.

Figure 14B is a second sectional view ⁷ of the medical sound muffler of Figure 14A including a diaphragm valve operator in a closed configuration.

DETAILED DESCRIPTION

Figure l is a perspective view ⁷ of one example of a medical sound muffler 100. As showm, the medical sound muffler 100 includes a muffler housing 102 having one or more valve operators such as a muffler float therein. In the example shown in Figure 1, the muffler housing 102 of the medical sound muffler 100 includes an inlet port 106 and an outlet port 110. In one example, the inlet and outlet ports 106, 1 10 cooperate to facilitate the installation of the medical sound muffler 100 along a suction line including, but not limited to, along the suction line (e.g., as an intermediate component), as an associated component of a suction pump or other source of suction, or with a collection device such as a collection bag as described and shown herein. As further shown in Figure I, the muffler housing 102 ot the medical sound muffler 100, in this example, includes a muffler intake 104 and a muffler exhaust 108. Referring first to the muffler intake 104, the intake 104 is in communication with the inlet port 106. As described herein, the muffler intake 104 is one example of an accumulator configured to accumulate fluids such as collected medical liquids (e.g., water, saline, body fluids or the like) in the muffler intake 104 as well as one or more components of the muffler housing 102 including, for instance, a float channel having a muffler sump.

As further shown in Figure 1, the muffler housing 102 includes the muffler exhaust 108 in communication with the outlet port 110 and the remainder of the medical sound muffler 100. In one example, the muffler exhaust 108 is provided at a transverse orientation relative to one or more of a float channel, movement direction of the valve operator, such as the muffler float, or the like. As described herein, the orientation of the muffl er exhaust 108 accordingly directs suction force relative to the valve operator in a manner configured to minimize the effect of suction on the overall movement of the valve operator and its retention in one or both of the open or closed configurations.

In operation, the medical sound muffler 100 accumulates medical liquid, for instance, within the muffler intake 104 as weII as one or more chambers of the muffler housing 102 including the float channel. As fluid is accumulated, the valve operator is configured to move, for instance, automatically in the case of a muffler float or one or more of the automatically actuated medical sound mufflers described herein (e.g., having instrumentation such as liquid level, flow ⁷ meter, pressure sensors, accelerometers, visible or infrared photoelectric sensors or the like, examples of accumulation sensors). In another example, the valve operator is configured to move according to operation by a technician such as a nurse, doctor or otherwise, for instance with a voice activated, hand or foot activated actuators or the like. Upon opening movement of the valve operator, the muffler exhaust 108 is open to the accumulated medical liquid and suction force applied from the outlet port 110 and through the muffler exhaust 108 drains the accumulated liquid through the muffler exhaust 108 and the outlet port 110. As described herein, the cyclical operation of the valve operator (between open and closed configurations), for instance, according to one or more ot a controller (and optional instrumentation), operation by a technician or operation, for instance, by way of a muffler float (another automatic examples) that facilitate the accumulation of medical liquids in the muffler 100 and withdrawal of the accumulated fluid in a consistent manner that minimizes noise. The muffler exhaust 108 remains closed while medical liquid is accumulated (e.g., in the muffler 100, muffler housing 102, float channel, muffler intake 104 or the like).

As discussed herein, suction noises from a source of suction such as a suction pump otherwise delivered to the outlet port 110 and distributed out of the inlet port 106 are accordingly suppressed, for instance, by the muffler float closing the muffler exhaust 108 and thereby blocking the sound. In another example, the muffler exhaust 108 when closed with the valve operator such as the muffler float minimizes (e.g., decreases or eliminates) the mixing of liquids and gases such as medical liquids and gases such as ambient air that, in some examples, creates a whistling or gurgling noise for instance by velocity differentials, cavitation or the like within the suction line. Instead, the medical liquid accumulates in the muffler intake 104 and accordingly a much larger volume of medical liquid is withdrawn in a consistent and ongoing fashion after opening of the muffler exhaust 108 to minimize mixing and attendant noise generated through mixing. Additionally, the accumulated liquid between the medical sound muffler and an open orifice, such as an opening of a collection device, blocks the suction line and accordingly interrupts incidental sound otherwise distributed from the collection device.

Figure 2 is an exploded view of the medical sound muffler 100 previously showm in Figure 1. As shown in this example, the muffler housing 102 includes a first housing component 200 configured for coupling with a second housing component 202. In this example, the inlet port 106 is associated with the first housing component 200 while the outlet port 110 is associated with the second housing component 202.

As further shown in Figure 2, one example of a valve operator, a muffler float 206, is shown between the first and second housing components 200, 202. As described herein, the muffler float 206 is moveable within the muffler housing 102, tor instance, within a float channel 204 to open and close the muffler exhaust 108 to facilitate the accumulation and withdrawing (or suction) of collected medical liquids from the float channel 204. One example of a float channel 204 having a muffler sump 208 is shown in Figure 2. For instance, the muffl er sump 208 is the bottom or lower portion of the float channel 204 and proximate to the muffler exhaust 108 as w ^? ell as the muffler intake 104. As further shown in Figure 2, a vent port 216 is, in one example, provided through the muffler housing 102 to facilitate the evacuation of fluids such as ambient air from within the float channel 204 to facilitate movement of the muffler float 206 therein.

As further shown in Figure 2, the muffler float 206, in this example, has a circular or spherical profile to facilitate movement within the float channel 204. As shown in Figure 2, the muffler float 206 includes a float upper portion 212 and a float lower portion 214. In the example shown in Figure 2, the muffler intake 104 is configured to provide inflowing medical liquids for collection within the muffler housing 102 proximate to the float lower portion 214 and, in one example, remote from the float upper portion 212 (e.g., at an opposed location relative to the upper portion 212). Accordingly, medical liquids accumulated with the medical sound muffler 100 are collected underneath the muffler float 206 to minimize constraint to movement of the muffler float 206, for instance, because of debris such as bone chips, fats, bodyfluids or other materials that may otherwise interfere with movement of the muffler float 206 within the muffler housing 102.

As further shown in Figure 2, the muffler exhaust 108, in this example, includes a float seat 210 having a complementary profile relative to the muffler float 206. In this example, the complementary profile of the float seat 210 m atches or corresponds to the spherical profile of the muffler float 206 to facilitate the seating of the muffler float 206 along the float seat 210 to close the muffler exhaust 108. In one example, the application of suction from the muffler exhaust 108 is conducted in a transverse manner and holds the muffler float 206 along the float seat 210 to close the muffler exhaust. As medical liquid is collected within the muffler sump 208 of the float channel 204, buoyant force is applied to the muffler float 206, and with sufficient collection and corresponding buoyant force, the muffler float 206 is unseated from the float seat 210. With sufficient medical liquid within the float channel 204 (e.g., for instance, the muffler sump 208) the buoyant force overcomes the suction force seating the muffler float 206 to the float seat 210 and the muffler float 206 rises and opens the muffler exhaust 108 to facilitate the evacuation of the medical liquid from the muffler housing 102.

As previously described herein, by accumulating medical liquid, for instance, in one or more of the muffler intake 104 or the muffler sump 208 mixing of intermittently collected medical liquids and gases such as ambient air is minimized within the muffler exhaust 108 and corresponding noise, for instance, generated from the suction line associated with the medical sound muffler 100 is thereby minimized (e.g., decreased or eliminated). Instead, medical liquids are accumulated within the muffler intake 104 and the muffler sump 208. After moving of the muffler float 206 to open the muffl er exhaust 108 (e.g., by unseating from the float seat 210) the accumulated medical liquid is suctioned from the muffler housing 102 in a consistent ongoing fashion to maximize the proportion of liquid relative to gas. Instead, a consistent flow of medical liquid is administered through the muffler exhaust 108 with incidental mixing of a small (relative) quantity of ambient gases such as air to minimize noise otherwise generated by way of mixing of a larger proportion of ambient air together mixed with intermittently suctioned liquids. By seating the muffler float 206 along the muffler float seat 210 and thereby closing the muffler exhaust 108 suction noises, for instance from the suction pump generated by a source of suction or the like, are blocked or suppressed from delivery from the system including, for instance, from a suction line coupled with or in communication with the medical sound muffler 100 through the inlet port 106.

Figures 3 A and 3B show two differing configurations of the medical sound muffler 100. Figure 3A shows a closed configuration 300 with the muffler float 206 seated along the float seat 210 and closing the muffler exhaust 108. In contrast, Figure 3B shows an open configuration 320 with the muffler float 206 decoupled from the float seat 210 and accordingly opening the muffler exhaust 108. Referring again to Figure 3 A, the medical sound muffler 100 is shown in a partially sectioned configuration. As shown, the muffler float 206 closes the muffler exhaust 108. In this example, the muffler float 206 closes the exhaust 108 by seating along a float seat 210 having a complementary profile to at least a portion of the muffler float 206. With the muffler exhaust 108 closed medical liquid, for instance received through the input port and the muffler intake 104, accumulates within the muffler sump 208 as well as the muffler intake 104. A sump partition 302 is shown below the muffler exhaust 108 and separates the exhaust 108 from the muffler sump 208. The sump partition 302 facilitates the pooling of medical liquid within the float channel 204 (and the muffler intake 104) until the medical liquid level has risen to a point that the buoyant force incidental on the muffler float 206 is sufficient to unseat or decouple the muffler float 206 from the float seat 210 and open the muffler exhaust 108.

In operation, as medical liquid is collected within one or more of the muffler intake 104 or the float channel 204 (e.g., the muffler sump 208) buoyancy is increased on the muffler float 206. At the same time, suction force is applied to the muffler float 206, for instance, from the muffler exhaust 108. In the example shown in Figure 3 A, the muffler exhaust 108 is provided in a transverse direction and accordingly applies the suction force to the muffler float 206 transversely relative to buoyancy of the muffler float 206. For example, the muffler exhaust 108 directs the suction force at an angle relative to a movement direction of the muffler float 206, orientation of the float channel 204, laterally relative to the buoyant force or the like. Accordingly, because the suction force is not applied in an aligned manner to the muffler float 206 (relative to its movement) buoyant forces are not frustrated and the muffler float 206 is readily able to decouple from the muffler exhaust 108 and open the exhaust. Accordingly, as the medical liquid accumulates within the muffler sump 208 and the muffler intake 104, the muffler float 206 gradually experiences greater buoyancy forces and when the buoyancy forces are sufficient to offset the suction force otherwise applied through the muffler exhaust 108, the muffler float 206 decouples from the muffler exhaust 108 and opens the muffler exhaust 108. In contrast, were the suction force directed down relative to the movement of the of muffler float 206 the suction would counter the buoyancy and the muffler float 206, and unseating and opening may be resisted. In another example, the medical sound muffler 100 having an aligned suction force that opposes buoyancy would accumulate additional medical liquid to counteract the applied suction force.

In one example, the muffler housing 102 includes an end contour 308 configured to facilitate the pooling of the medical liquids while at the same time freeing the muffler float 206 to readily float within the fluids. In a similar manner, the opposed end of the muffler housing 102, for instance of the float channel 204, includes a corresponding end contour 306. In various examples, the end contours 306, 308 provide a discontinuous surface that facilitates the ready movement of the muffler float 206 without retention otherwise caused by vacuum locking, sticking or retaining of the muffler float 206 in one or more of the open or closed configurations.

Referring now to Figure 3B, one example of a valve operator, the muffler float 206 is shown in an open configuration 320 with the muffler float unseated from the float seat 210 of the muffler exhau st 108 and the muffler exhaust 108 is accordingly opened. As previously described, filling of the one or more of the float channel 204 or the muffler intake 104 raises the muffler float 206 according to buoyant forces that overcome suction force otherwise applied to the muffler float 206 (e.g., transversely or the like) to decouple the muffler float 206 from the muffler exhaust 108 and open the exhaust for suctioning of the accumulated medical liquid therefrom.

In the example shown in Figure 3B, the muffler housing 102 includes the sump partition 302 interposed between the muffler exhaust 108 and the muffler sump 208. The sump partition 302 facilitates the accumulation of medical liquids within the muffler sump 208 (of the float channel 204) and the muffler intake 104. In one example, after the muffler float 206 is decoupled from the muffler exhaust 108 through buoyancy imparted with the accumulated medical liquids the medical liquids are at a level proximate to or above the sump partition 302. Accordingly, the suction force directed by the muffler exhaust sucks or drains the accumulated medical liquids from the muffler sump 208 until the medical liquid level within float channel 204 is sufficiently low that the muffler float 206 descends to the muffler exhaust 108 and closes the muffler exhaust 108, for instance through reseating of the float with the float seat 210 through suction force applied through the exhaust.

Figure 4 shows another cross-sectional view of the medical sound muffler 100 having, in this example, a valve operator such as a muffler float 206 shown in a closed configuration relative to the muffler exhaust 108. In the example shown in Figure 4, the muffler float 206 is diagrammed (e.g., a free body diagram) illustrating the buoyant force 400 generated with the medical liquid accumulated within the muffler sump 208 of the float channel 204 and a suction force 402 directed through the muffler exhaust 108, for instance, from the outlet port 110.

As shown in Figure 4, the muffler float 206 is closed, and in this example is seated along the complementary float seat 210 surrounding the muffler exhaust 108. In one example, the float seat 210 is a component of the muffler exhaust 108. With the muffler exhaust 108 oriented transversely relative to the direction of movement of the muffler float 206, the orientation of the float channel 204, gravity or the like, the suction force 402 applied to the muffler float 206 is at an angle relative to the buoyant force 400. Accordingly, the suction force 402 is a shearing force relative to the buoyant force 400 and has reduced impact on the retention of the muffler float 206 along the muffler exhaust 108. Accordingly, as the float channel 204 fills, for instance, by accumulating medical liquids therein, the buoyant force 400 gradually increases thereby biasing the muffler float 206 from the closed configuration shown in Figure 4 to an open configuration such as that shown in Figure 3B. Because the suction force 402 is transverse (e.g., at an angle, misaligned, not aligned with the buoyant force 400 or the like) the suction force 402 retains the muffler float 206 in position along the muffler exhaust 108. However, the suction force 402 is not directly opposed to the buoyant force 400 and accordingly the buoyant force 400 readily unseats the muffler float 206 and thereby opens the muffler exhaust 108. Accordingly, as medical liquid accumulates within the float channel 204, for instance, below the float lower portion 214 and gradually increases the buoyant force 400, the muffler float 206 readily decouples from the muffler exhaust 108 thereby opening the muffler exhaust and facilitating the evacuation of the medical liquids, for instance, through the suction force 402 applied through the muffler exhaust 108. .As the medical liquids gradually evacuate from the muffler housing 102, the muffler float 206 descends within the float channel 204 until it closes the the muffler exhaust 108 for instance through seating along the float seat 210 according to the suction force 402.

Figure 5 shows another cross-sectional perspective view of the medical sound muffler 100 with the muffler float 206 removed to illustrate medical liquid flow into and out of the muffler housing 102. For instance, an intake flow 502 of medical liquids is received through the inlet port 106 and directed through the muffler intake 104 in communication with the float channel 204 at a lower portion of the muffler housing 102. In one example, the medical liquid is accumulated in the muffler sump 208 and the muffler intake 104 below the muffler float or other valve operator configured for use with the medical sound muffler 100. As described herein, accumulation of the medical liquid at a lower position relative to the valve operator (e.g., the muffler float 206) minimizes trapping of the valve operator by the medical liquid or debris within the medical liquid.

As further shown in Figure 5, the medical liquid 500 shown with a dashed line in Figure 5 gradually accumulates and, as previously described, by way of buoyant force moves the muffler float 206 to the open configuration to open the muffler exhaust 108 and permit withdrawal of the accumulated medical liquid 500. One example of an exhaust flow 504 is shown in broken and solid lines in Figure 5. As shown, the exhaust flow 504 is sucked through the muffler exhaust 108 and from the outlet port 110 according to the suction force 402 previously shown and described in Figure 4. In this example, the float channel 204 including the muffler sump 208 includes a sump partition 302 configured to separate the muffler exhaust 108 from the muffler sump 208 and thereby facilitate the accumulation of medical liquids within the float channel 204 to promote buoyancy of the muffler float 206. After the medical liquid 500 rises proximate to the sump partition 302 (e.g., just below or above) buoyancy decouples the muffler float 206. The accumulated medical liquid 500 is of a sufficient height to rise above the sump partition 302 and is evacuated by suction through the muffler exhaust 108 and out the outlet port 110. Figure 6 is a partial sectional view of another medical sound muffler 601. In this example, the medical sound muffler 601 includes a muffler shunt 600 as another example of a medical sound muffler used alone or in addition to the previously described medical sound muffler 100. In another example, the muffl er shunt 600 is used in combination with one of the other medical sound mufflers described herein. As shown in Figure 6, a second housing component 202 of the muffler housing 102 includes a portion of the medical sound muffler 601. In this example, the muffler shunt 600 is used in combination with one or more previously described components such as a valve operator including, for instance, the muffler float 206 previously described herein. As shown in Figure 6, a muffler intake 104 extends into the float channel 204, for instance having a muffler sump 208. A muffler exhaust 108 extends from the muffler housing and is in communication with a source of suction including, but not limited to, a suction pump, vacuum chamber or the like configured to apply suction through the muffler exhaust 108 to the float channel 204 and withdraw medical liquids therein.

Referring again to Figure 6, in this example, a muffler shunt 600 is used in combination with one or more previously described features of a medical sound muffler including, for instance, the muffler intake 104, the muffler exhaust 108 and a valve operator such as the muffler float 206. As shown in Figure 6, the muffler shunt 600 includes a shunt duct 606 extending from a shunt intake 604 to a shunt port 602. As shown, the shunt port 602 is in communication with the muffler exhaust 108 and, in this example, is provided on a downstream side relative to the valve operator 206 such as the muffler float 206. As described herein, the muffler shunt 600 provides a flow of an ambient fluid, for instance, ambient atmosphere delivered from the muffler housing exterior 608 through the muffler shunt 600 into the shunt port 602 and the muffler exhaust 108. As will be described herein, the inflow of ambient fluid such as ambient gas, atmosphere or the like, attenuates or abates suction applied through the muffler exhaust 108 and otherwise applied to the muffler float 206. Accordingly, the suction force applied to the muffler float 206 is attenuated thereby permitting the muffler float 206 to readily move within the float channel 204 (e.g., because of an actuating force such as buoyancy, operation of powered actuator or the like). Accordingly, retention ot the muffler float 206 along the float seat 210 by the suction force 402 (see Figure 4) that is otherwise overcome with buoyant force is minimized.

In another example, the muffler shunt 600 provides an inflow of ambient fluid or the like that while the muffler exhaust 108 is open (as well as closed). The ambient fluid attenuates suction force otherwise provided through the muffler exhaust 108 and into the muffler intake 104 while the medical sound muffler is open. The addition of an inflow of ambient fluid, such as ambient atmosphere, into the suction line including the muffler intake 104 and the muffler exhaust 108 attenuates suction and thereby minimizes the mixing of intermittently collected medical liquids and air within the suction line and sound generated by the mixing of the liquids and gases (e.g., because of velocity differences, cavitation or the like). Stated another way, the muffler shunt 600 provides an inflow of gas that decreases suction and minimizes high velocity movement of liquids and gases through the suction line by introducing another source of fluid to the suction line. The supplemental source of fluid attenuates the otherwise rapid movement of gases relative to liquids that generates sound such as gurgling, whistling or the like within the suction line.

Figure 7 shows a partial sectional view of the medical sound muffler 601 in an assembled configuration, for instance, with the first housing component 200 coupled with the second housing component 202. In this example, the medical sound muffler 601 includes a valve operator such as the muffler float 206 (see Figure 2) received within the float channel 204. In Figure 7 the muffler float 206 is in an open configuration allowing communication between the muffler intake 104 and the muffler exhaust 108. In this example, the medical sound muffler 601 includes a muffler sump 208 configured to accumulate medical liquid therein prior to unseating of the muffler float 206. With opening of the muffler exhaust 108 by the muffler float 206suction force applied through the muffler exhaust 108 draws the accumulated medical liquid into the muffler exhaust 108 and toward the outlet port 1 10 where it travels to a storage reservoir (810 in Figure 9).

As further shown in Figure 7, the muffler shunt 600 provides a supplemental flow of fluid, in this example ambient fluid such as ambient atmospheric gas, through the shunt intake 604. The ambient fluid passes through the shunt duct 606 to the shunt port 602 and the muffler exhaust 108. With the medical sound muffler 601 in the open configuration, the supplemental flow of ambient gas into the muffler exhaust 108 attenuates suction otherwise supplied through the muffler exhaust 108 and accordingly minimizes or decreases the velocity (and mixing) of withdrawn medical liquids and gases that otherwise generate sound from the muffler exhaust 108, the muffler intake 104 or the suction line that are otherwise distributed or broadcast from an opening of the suction line such as a portion of the suction line in communication with a collection device (e.g., the collection device 802 shown in Figure 8). Instead, because suction is attenuated within each of the open muffler exhaust 108 and the muffler intake 104, the velocity of liquids and gases that mix is decreased and relatively higher speed movement of gas relative to the liquids that generates sound is minimized.

Although the medical sound muffler 601 shown in Figures 6 and 7 is, in one example, included with another example of the medical sound mufflers described herein, the muffler shunt 600 is, in one example, a stand-alone medical sound muffler configured for installation along a suction line (e.g., including along the suction line; proximate to the proximal or distal end of the suction line, for instance, associated with the suction source, a collection device or the like) to suppress sound otherwise generated or distributed from the suction line. For instance, in one example, the muffler shunt 600 is provided as an inline component without the muffler float 206 or other valve operators described herein. Instead, the muffler shunt 600 provides a supplemental flow of fluid (e g., ambient atmosphere) to the suction line that decreases the suction force within the suction line and correspondingly decreases the velocity of gas and liquid that mix and generate noise. Accordingly, the slower moving medical liquid and ambient fluids mix to a lesser extent, cavitate less or the like and generate decreased noise including whistling or gurgling .

Figure 8 is a schematic view including details A and B of one example of a medical liquid collection system 800 including one or more sound generating phenomenon such as mixing, cavitation or the like between a medical liquid 804 and a gas 814. As showm in Figure 8, the medical liquid collection system 800 includes a collection device 802 such as a bag, drape or the like configured to collect medical liquids including, but not limited to, saline, body fluids, water or the like, for instance, by way of gravity. As shown in Figure 8, the medical liquid 804 is collected toward the bottom of the collection device 802 and proximate to a suction line 806. The suction line 806 is in turn coupled with a storage reservoir 810 that collects the medical liquid 804 from the collection device 802 through suction force supplied by a suction source 812 such as a suction pump, vacuum chamber, tank or the like that provides suction force to the suction line 806 for withdrawing the medical liquid 804 therein.

As previously described, the application of a suction force from the suction source 812 to the suction line 806 in some examples generates unwanted sound (e.g., noise) including, but not limited to, one or more of whistling, gurgling or the like through the suction line 806. The sound is distributed from the collection device 802 having an opened end of the suction line 806. In some examples, the collection device 802 is in close proximity to technicians including, but not limited to, doctors, nurses, dental hygienists, dentists or the like. In some examples, the sound generated from the collection device 802 and the suction line 806 is distracting, interferes with one or more of communication (speaking), concentration or conducting a procedure or the like.

The details A and B shown in Figure 8 illustrate one example of a set of physical characteristics that generate sound such as whistling, gurgling or the like within the suction line 806. In one example, the medical liquid collection system 800 intermittently collects fluids that are received within the collection device 802. The intermittently collected fluids are subjected to ongoing suction from the suction source 812 that draws the into the storage reservoir 810. As showm in the details including detail A and detail B, the gas 814 mixes with the medical liquids 804. For instance, the medical liquids 804 are shown in a generally slower flowing configuration provided along the walls of the suction line 806 while the gas 814 (shown with illustrative circles in Figure 8) moves between the medical liquids 804 at a higher velocity according to the suction force supplied by the suction source 812. The relatively high velocity of the liquid and gas and variation in the velocities of each of the medical liquid 804 and the gas 814 facilitates mixing therebetween that generates noise such as whistling or gurgling caused by the mixing, cavitation or the like. .Accordingly, the intermittently collected medical liquids 804 that move through the suction line 806 mix with the faster moving gas 814 and generate sound along the suction line 806 that is distributed from the open collection device 802, for instance, at the base of the collection device 802 and in proximity to the patient, subject, technicians or the like.

As described herein, the present medical sound mufflers, described herein and described further herein, address this mixing and corresponding sound generation by accumulating medical liquids within at least a portion of the suction line 806 to decrease the mixing of the medical liquids and gases. Instead, medical liquids are retained within the suction line 806 until such time that a valve operator, such as the muffler float 206 or other valve operators described herein, are open to facilitate the withdraw of a larger volume of the medical liquid relative to a correspondingly smaller volume of gas 814. The medical liquid 804 retained in larger volumes (having a higher proportion) accordingly mixes to a lesser degree with a smaller relative volume of gas (having a lower proportion) and thereby minimizes the generation of noise. Additionally, the intervening accumulated medical liquid, for instance, upstream from the muffler float 206 interrupts the flow of sound otherwise generated with incidental mixing of the collected medical liquid 804 and gas 814. Stated another way, the valve operators of the various medical sound mufflers described herein accumulate medical liquid upstream from the valve operator and provide an interposing feature including the medical liquid 804 that interrupts the distribution of sound along the suction line 806, for instance, to the open collection device 802. Accordingly, even with incidental mixing of the accumulated medical liquids 804 and gases 814 in a suction line 806 including the medical sound mufflers described herein sound generated within the suction line 806 is suppressed or attenuated by the intervening accumulated liquids between the source of suction and the collection device 802.

Figures 9 and 10 are examples of a medical liquid collection system 900 in closed and open configurations respectively. Referring first to Figure 9, the system 900 is shown with a collection device 802, for instance a collection bag, drape or the like, configured to collect medical liquids (e.g., body fluids, saline, water or the like). As shown, the collection device 802 collects a medical liquid 804, in one example by gravity, that accordingly settles toward the bottom of the collection device 802. A suction line 806 extends from the collection device 802 toward the storage reservoir 810 and an associated suction source 812 such as a suction pump, vacuum chamber, tank or the like. As further shown in Figure 9, one example of the medical sound muffler 100 is provided along the suction line 806. In the example shown in Figure 9, the medical sound muffler 100 is provided along the suction line 806, for instance, between the proximal and distal ends of the suction line 806 associated with the collection device 802 and the storage reservoir 810 respectively. In other examples, the medical sound muffler 100 is provided along the suction line 806, for instance, proximate to or associated with the collection device 802 or the suction source 812 or storage reservoir 810. In one example, installation of the medical sound muffler 100 along the suction line 806 includes installation, coupling or association of the medical sound muffler 100 at any location along the suction line 806 including at an intermediate location along the suction line 806 as well as proximate to one or more end locations of the suction line 806, for instance, proximate to or coupled with the collection device 802, the storage reservoir 810 or the suction source 812.

Referring again to Figure 9, in this example the medical sound muffler 100 includes a valve operator such as a muffler float 206 positioned within a muffler housing 102. The muffler housing 102 includes a muffler intake 104 coupled with a proximal portion of the suction line 806 (upstream) while a muffler exhaust 108 is coupled with a distal portion of the suction line 806 (downstream), for instance, associated with the storage reservoir 810 and suction source 812. In the example shown, the muffler float 206 is provided within a float channel, for instance having a muffler sump 208, configured to receive medical liquids from the collection device 802 and accumulated along the suction line 806 and in the muffler sump 208 while the muffler float 206 closes the muffler exhaust 108.

As shown in Figure 9, the muffler float 206 is, in this example, in the closed configuration with the muffler float 206 having a complementary profile to a float seat 210 of the muffler exhaust 108. The muffler float 206 is retained m the closed configuration on the float seat 210 by suction force 904 provided in a transverse direction (e.g., at an angle, misaligned or the like) relative to a moving direction of the muffler float 206, for instance caused with a buoyancy force 902. In the example shown in Figure 9, the suction force 904 is at an angle relative to the buoyancy force 902 and thereby transverse. The transverse suction force 904 is directed from the muffler exhaust 108 and toward the muffler float 206. For instance, the suction force 904 pulls the muffler float 206 toward the muffler exhaust 108.

With the medical sound muffler 100 in the closed configuration, for instance, with the muffler float 206 closing the muffler exhaust 108, the optional muffler shunt 600 is configured to provide a supplemental flow of exterior ambient fluid such as air through the shunt intake 604 that is delivered through the shunt duct 606 to the shunt port 602. As shown in Figure 9 with directional arrows, the supplemental flow of ambient air is directed into the distal portion of the suction line 806 and abates or attenuates the pressure difference or negative pressure experienced in the suction line 806. In one example, the attenuated suction decreases the suction force 904 otherwise applied to the muffler float 206 and facilitates decoupling of the muffler float 206 from the float seat 210, for instance, according to the buoyancy force 902. Accordingly, retention of the muffler float 206 because of the suction force 904 (and in contravention of the buoyancy force 902) is minimized (e.g., decreased or eliminated). Instead, the muffler shunt 600 provides a supplemental flow ⁷ of ambient air that aHow-'s the buoyancy force 902 to readily unseat the muffler float 206 and open the muffler exhaust 108 to withdraw accumulated medical liquid within the muffler sump 208 and the suction line 806 including the muffler intake 104.

Additionally, the supplemental flow ⁷ of ambient air into the suction line 806 attenuates the negative pressure within the suction line 806 and accordingly decreases the velocity of gases such as air drawn through the suction line 806 that otherwise generate gurgling or w ⁷ histling noises, for instance, by way of mixing or cavitation of liquids and gases within the suction line 806.

Referring now ⁷ to Figure 10, the medical sound muffler 100 of the medical liquid collection system 900 is shown in an open configuration with medical liquid 804 accumulated within one or more of the muffler intake 104 and the muffler sump 208. In the example shown m Figure 10, the medical sound muffler 100 is shown in this example after decoupling of the muffler float 206 and movement of the muffler float 206 to an open configuration relative to the muffler exhaust 108. The medical liquid 804 is shown in Figure 10 with various elevations within the muffler housing 102. In the muffler intake 104, an accumulated amount of medical liquid 804 has a higher elevation or level relative to the medical liquid 804 accumulated within the muffler sump 208. In one example, movement of the muffler float 206 to the open configuration opens the muffler exhaust 108 and permits withdrawal of the accumulated medical liquid through the exhaust 108 according to the suction source 812.

Accordingly, the medical liquid 804 in the muffler sump 208 is withdrawn from the muffler sump 208 into the distal portion of the suction line 806 to the storage reservoir 810. Additionally, the accumulated medical liquid 804 within the muffler intake 104 as well as the suction line 806 is gradually withdrawn through the muffler sump 208 and into the muffler exhaust 108. As the medical liquid level within the muffler intake 104 gradually decreases (with withdrawal through the muffler sump 208) the muffler float 206 descends toward the float seat 210. While proximate to the muffler exhaust 108 the muffler float 206 couples with the exhaust (e.g., the float seat 210) thereby closes the muffler exhaust 108 and the medical sound muffler 100 (in the closed configuration) begins accumulating medical liquid again.

As further showm in Figure 10, with the valve operator in an open configuration, the muffler shunt 600 continues to operate by supplementing the medical liquid 804 and ambient fluid drawn through the muffler exhaust 108 with supplemental fluid, such as ambient air, drawn through the shunt intake 604. The intake of supplemental ambient air decreases the pressure difference (e.g., negative pressure) within the suction line 806 and accordingly slows the flow ⁷ of gases such as air or the like relative to the medical liquid 804 and minimizes noise otherwise generated by mixing or cavitation of the gas relative to the medical liquid 804. Additionally, and as previously described herein, the accumulated medical liquid 804, for instance, within the muffler intake 104 and the muffler sump 208 intercepts or blocks sound otherwise generated in the distal portion of the suction line 806 (downstream relative to the collection device 802) by the suction source 812 and instead blocks the distribution of sound to the proximal portion of the suction line 806 (upstream and proximate to the collection device 802) and thereby minimizes (e.g., decreases or eliminates) the distribution of sound, for instance, from the collection device 802.

Accordingly, during operation the medical liquid collection system 900 suppresses sound otherwise generated from one or more orifices of the medical liquid collection system 900 such as at the collection device 802 or in the suction lines 806 thereby allowing technicians including, but not limited to, doctors, dentists, nurses, dental hygienists or the like to operate in a relatively quiet environment in comparison to noise generated with a system 800 as shown in Figure 8.

As further shown in Figure 10, the suction force 904 has a transverse orientation relative to the buoyancy force 902. In one example, the suction force 904 is a sheer force that is transverse (e.g., misaligned, at an angle, orthogonal or the like) relative to the buoyancy force 902 and accordingly has a mitigated effect on the buoyancy force 902 that otherwise is configured to move the muffler float 906. In this example, the buoyancy force 902 readily moves the muffler float 206 upon accumulation of medical liquid 804 within one or more of the suction line 806, muffler intake 104 or muffler sump 208. Retention of the muffler float 206 along the float seat 210 by the suction force 904 is minimized and upon filling of one or more of the accumulating portions of the medical liquid collection system 900 the muffler float 206 readily moves into the open configuration to allow for withdrawal by suction through the muffler exhaust 108. In a similar manner, because the suction force 904 is transverse to the buoyancy force 902 upon withdrawal of the medical liquid 804, for instance from the muffler sump 208, the muffler float 206 descends and remains in the open configuration until the liquid level has sufficiently dropped and the muffler float 206 is positioned in proximity to the muffler exhaust 108. At that time, the transverse suction force 904 is sufficiently strong relative to the buoyancy force 902 to seat the muffler float 206 along the float seat 210 and thereby close the muffler exhaust 108. By maintaining the muffler exhaust 108 open for a longer period (before reseating and closing) additional withdrawal of the medical liquid from the muffler sump 208, muffler mtake 104 and the upstream portion of the suction line 806 is conducted.

In another example where the medical sound muffler 100 includes the muffler shunt 600, the supplementing of ambient air, gas or the like to the distal suction line 806, for instance, between the storage reservoir 810 and the muffler 100 decreases the negative pressure or pressure difference within the suction line 806 and correspondingly mitigates or attenuates the suction force 904. The attenuated suction force 904 allows the muffler float 206 to remain in the open configuration longer and facilitates continued withdrawal of additional medical liquid 804 before reseating and closing of the muffler exhaust 108. Additionally, and as described previously herein, the muffler shunt 600 attenuates the negative pressure within the suction line 806 and decreases the velocity of gases and liquids within the suction line 806 that otherwise cause mixing, cavitation or the like that generate noise in the suction line 806.

In the example medical liquid collection system 900 shown in Figures 9 and 10 the medical sound muffler 100 is shown installed with the suction line 806. In other examples, the medical sound muffler 100 is assembled as a separate component configured for installation along the suction line 806 including, but not limited to, a location between the ends of the suction line; proximate to the ends of the suction line including installation with one or more of the collection device 802, storage reservoir 810 or the suction source 812; or the like. In still other examples, the medical sound muffler 100 is provided as an integral component of one or more of the suction line 806, the collection device 802, the storage reservoir 810 or the suction source 812. In each of these example configurations described herein above and below the medical sound muffler 100 is considered coupled along the suction line 806.

Figures 11 A and 1 IB show sectional views of another example of a medical sound muffler 1 100. In this example, like the other examples herein, the medical sound muffler 1100 is a valve assembly configured to muffle sound (e.g., suppress, abate or the like) generated by one or more of suction noises generated by a suction source such as a suction pump or mixing of fluids such as a medical liquid and air or other ambient fluid with the medical liquid that otherwise generates whistling, gurgling noises or the like. Referring first to Figure 11 A, the medical sound muffler 1 100 is shown in a closed configuration, for instance, with a valve operator 1106 closed relative to the muffler exhaust 1108. In this example, a muffler intake 1104 extends toward a strike face 1 1 14 of the valve operator 1106. The valve operator 1106 is provided in an in-line or intercepted configuration to the muffler intake 1104. As described herein, the strike face 1114 of the valve operator 1106 is configured to receive one or more of hydrostatic or hydrodynamic forces delivered through the muffler intake 1104. As described herein, one or more of hydrostatic or hydrodynamic forces are received along the strike face 1114 and with sufficient force the valve operator 1106 is moved from the closed configuration to an open configuration (shown in Figure 1 IB) to open the muffler exhaust 1108 and allow for the withdrawal of accumulated medical liquid within the muffler intake 1104 and the suction line extending to a collection device.

As further shown in Figure 11 A, the valve operator 1106 is housed within a muffler housing 1102. The muffler housing 1102 includes an operator channel 1112 configured to moveably receive the valve operator 1106 therein. In one example, the valve operator 1106 is passively located within the operator channel 1112 and is configured to rest along a piston seat 1110 and close the muffler exhaust 1108, for instance according to gravity. In another example, the muffler housing 1102 is oriented in an agnostic position or configuration relative to gravity and an optional biasing element 11 16 such as a spring, elastomer or the like is interposed between a portion of the muffler housing 1102 and the valve operator 1106 to bias the operator toward the closed configuration shown in Figure 11 A. In other examples, the biasing element 1116 is included even with the muffler housing 1102 oriented as shown in Figure 11 A with the valve operator 1106 biased by gravity toward the closed configuration. In this configuration, the biasing element 1116 works in concert with gravity to accordingly bias the valve operator 1106 toward the closed configuration.

Figure 1 IB shows the medical sound muffler 1100 in an open configuration, for instance, with the flow of medical liquid shown with the arrow' extending from the muffler intake 1104 and through the muffler exhaust 1108. As previously described, one or more of hydrostatic or hydrodynamic forces are incident along at the strike face 1114 of the valve operator 1106 and bias the valve operator 1106 into the open configuration shown and thereby open the muffler exhaust 1108. As previously described, the muffler intake 1104 including, for instance, that portion of the muffler intake 1 104 extending from the valve operator 1106 and into the suction line accumulates medical liquid, for instance received from a collection device such as a collection bag, provided with a surgical drape or other medical type device. The medical liquid accumulates in the muffler intake 1104 and applies a corresponding hydrostatic force along the strike face 1 1 14 and biases the valve operator 1 106 toward the open configuration. In another example, hydrodynamic forces, for instance, caused by the dynamic accumulation of descending medical liquids (having a higher density in comparison to gas in the suction line) within the muffler intake 1104 are incident against the strike face 1114 and bias the strike face toward the open configuration. The strike face 1114 of the valve operator 1106 is, in one example, oriented in an aligned configuration relative to gravity (e.g., the face extends transversely relative to gravity) to facilitate the direction of hydrodynamic forces from the gravity collected medical liquids into contact with the strike face 1 114 to thereby overcome the force of gravity otherwise incident on the valve operator 1106 (as well as optional force from the biasing element 11 16). One or both of the hydrostatic or hydrodynamic forces thereby unseat the valve operator 1106 from the piston seat 1110 to facilitate the flow of the accumulated medical liquid through the muffler exhaust 1108 toward a source of suction including, for instance, a storage reservoir in communication with a suction pump. Conversely, as a proportion of liquid relative to gas decreases in the muffler intake 1104 the density of the fluid in the intake decreases, hydrodynamic force on the strike face 1114 correspondingly decreases (force is a function of mass/density multiplied by acceleration), and the valve operator 1106 closes. As the muffler intake fills with higher proportion of the higher density medical liquid (relative to gas, such as ambient air) the hydrodynamic force incident on the strike face 1114 increases (a relatively higher density multiplied by acceleration) and thereby biases the valve operator 1106 toward the open configuration.

Figure 12 is another sectional view of another example of a medical sound muffler 1200 including, for instance, a valve assembly that is configured to muffle sound otherwise provided through a suction line, tor instance, from the muffler exhaust 1208 to an open portion of a collection system such as a collection device including, for instance, a surgical drape. In a similar manner to other sound mufflers described herein, the medical sound muffler 1200 includes a muffler intake 1204 extending from a suction line toward a valve operator 1206 received within an operator channel 1212 of the muffler housing 1202. As further shown in Figure 12, the valve operator 1206 is configured for seating along a piston seat 1210 to close the muffler exhaust 1208 relative to the muffler intake 1204.

In this example, the valve operator 1206 includes a piston or other feature having a first component such as a stem or the like that is actuated by a valve actuator 1220. As shown in Figure 12, the valve actuator 1220, in this example, extends around the component of the valve operator 1206. Optionally, the valve actuator 1220 includes a solenoid configured to provide an electromagnetic force that moves the valve actuator 1220 from the closed configuration to the open configuration shown in Figure 12. In another example, a biasing element 1216 such as a coil spring, leaf spring or the like is interposed between the valve actuator 1220 and a portion of the muffler housing 1202 to bias the valve operator 1206 toward the closed configuration. Upon the introduction of a driving current to the valve actuator 1220, a corresponding magnetic field is generated and the valve operator 1206 is moved from the closed configuration to the open configuration shown in Figure 12.

As shown in Figure 12, the muffler exhaust 1208 is open and accordingly the valve actuator 1220 is supplying a magnetic field for movement of the valve operator 1206 to overcome the bias provided by the biasing element 1216 and optionally gravity. With the valve operator 1206 open, flow of accumulated fluid, within the muffler intake 1204 and the associated portion of the suction line is withdrawn through the muffler exhaust 1208 toward a source of suction.

As shown in Figures 11 A, B and 12, the muffler exhaust 1208, in this example, as in previous examples, transverse relative to a movement direction of the valve operator 1206. In each of these examples, the transverse orientation of the muffler exhaust 1208 (e.g., at an angle, extending laterally, orthogonal or the like) relative to the movement direction of the valve operator 1206 minimizes the effect of the suction force on movement to the valve operator 1206 and accordingly minimizes the predisposition or biasing of the valve operator 1206 toward one or more of the closed or open configurations. Instead, the muffler exhaust 1208 directs the suction force transversely (as a shearing force) toward the valve operator 1206 and minimally affects movement to the valve operator 1206. In this example as in other examples, the muffler exhaust 1208 or muffler exhaust 1108 as shown in Figures 11A, B directs the suction force to minimize its effect on retention of the valve operator in a closed or open position and at the same time facilitates movement of the valve operator 1206 according to one or more of hydrostatic or hydrodynamic forces, actuator operation or the like.

Figures 13 A and 13B show another example of a medical sound muffler 1300. In this example, the muffler 1300 includes a valve assembly having a valve operator 1306 actuated with a valve actuator 1320. In this example, like the example shown in Figure 12, the valve actuator 1320 actively moves the valve operator 1306 in contrast to previous examples (such as the mufflers 100 and 1100) operated in an automatic fashion, for instance, according to accumulated fluids within one or more of the muffler intake, muffler sump or the like. Referring again to Figure 13A, the medical sound muffler 1300 includes a valve actuator 1320, such as a motor including one or more of an electrically driven, pneumatically driven or hydraulically driven motor, coupled with the valve operator 1306. The valve operator 1306 as shown in Figure 13B is, in one example, a ball valve element, gate valve element, butterfly valve element or the like configured to be operated by the valve actuator 1320.

The medical sound muffler 1300 includes a muffler housing 1302 including a muffler intake 1304 (e.g., configured for coupling along a suction line) and a muffler exhaust 1308 (e.g., configured for coupling along a suction line).

Referring now to Figure 13B, the medical sound muffler 1300 is shown in an open configuration, for instance, with the valve actuator 1320 operated to accordingly move the valve operator 1306 such as a ball valve element into an open configuration to open the muffler exhaust 1308 to communication with the muffler intake 1304. The valve operator 1306 is retained in a closed configuration in some examples to accumulate medical liquid within the muffler intake 1304 upstream from the valve operator 1306. Accordingly, with operation of the valve actuator 1320, the valve operator 1306 opens the muffler exhaust 1308 to an ongoing flow of the accumulated medical liquid within the muffler intake 1304. As previously described, the withdrawal of accumulated medical liquid suppresses sound, for instance, generated by mixing of liquids and gases as well as noise generated by one or more sources of suction such as the suction pump.

Optionally, the valve actuator 1320 (as well as the valve actuator 1220 in Figure 12) is optionally configured for communication with one or more sensors including, but not limited to, liquid level, flow meter, pressure, accelerometer, visible or infrared photoelectric sensors or the like (examples of accumulation sensors) associated with the muffler intake 1304. In one example, the valve actuator 1320 is operated according to detection of accumulated liquid within the muffl er intake 1304, for instance, by way of one or more of ultrasound, UV, infrared, flow, pressure, detection of a float or other detection provided within the muffler intake 1304. In another example, instrumentation including sensors is provided with the muffler exhaust 1308 including one or more of a flow meter, ultrasound or infrared sensor configured to detect a proportion of the medical liquid relative to gases within the suction line or muffler exhaust 1308. When the detected proportion of the medical liquid drops below a threshold, for instance, 50 percent relative to the volume of the muffler exhaust 1308, the valve actuator 1320 is, in one example, closed to accordingly close the muffler exhaust 1308 and facilitate the accumulation of medical liquid within the muffler intake 1304 for eventual opening and withdrawal of the accumulated medical liquid through the muffler exhaust. In another example, one or more sensors including, for instance, an accelerometer or the like are coupled with the muffler housing 1302. In one example, the accelerometer detects rapid movement or changes in movement (e.g., acceleration) caused by mixing of liquids and gases, for instance, when an intermittent flow of the medical liquid is present through the muffler housing 1302. As previously described, liquids and gases, in some examples, mix and generate noise by way of cavitation including, but not limited to, whistling or gurgling within the suction line. Additionally, mixing causes movement within the suction line, for instance, caused by component forces incident between the liquids and gases as they mix. This movement is detectable with an accelerometer and optionally triggers closing the valve operator 1306 with the actuator 1320. In a more consistent flowing configuration, for instance, with accumulated medical liquid moving in greater proportion relative to gases in the muffler intake 1304 and muffler exhaust 1308 forces (e.g., because of mixing) that cause lateral movement of the suction line and muffler housing 1302 are absent or substantially minimized thereby indicating the valve operator 1306 should be opened. In one example, an accelerometer, for instance, associated with the muffler housing 1302 includes a threshold force, acceleration or the like. When the threshold is reached the valve actuator 132- automatically triggers closing of the valve operator 1306. Optionally, after a prescribed time the valve actuator 1320 is automatically opened and the accelerometer determines if the resulting flow through the muffler housing 1302 rises above or is below the threshold that otherwise triggers continued closing of the valve operator 1306. If the resulting acceleration is below ⁷ the threshold, the valve actuator 1320 retains the valve operator 1306 in an open configuration until such time that otherwise consistent flow' of the medical liquid becomes inconsistent (e.g., intermittent) and the measured acceleration exceeds the threshold to trigger closure of the valve actuator 1320.

In still other examples, the valve actuator 1320 (as well as other actuators such as the actuator 1220 shown in Figure 12) is operated manually, for instance, by way of a technician that operates the valve actuator 1320 to correspondingly open and close the valve operator 1306. In still other examples, the valve actuator 1320 is provided with a clock or other timing device configured to regularly actuate the valve actuator 1320 and accordingly open the valve operator 1306. In one example, the period for the actuator 1320 is set according to understood collection rates or the like configured to ensure accumulation of medical liquid within the muffler intake 1304 and corresponding consistent flow ⁷ of the medical liquid through the muffler housing 1302 and into the muffler exhaust 1308 during operation.

Figures 14A and 14B show ⁷ another example of a medical sound muffler 1400. In this example, a valve assembly of the medical sound muffler 1400 includes a valve operator 1406, such as a diaphragm, extending between the muffler intake 1404 and the muffler exhaust 1408. Figure I4A shows an open configuration of the medical sound muffler 1400 while Figure 14B shows a closed configuration.

Referring first to Figure 14A, the valve operator 1406 is in one example a pliable diaphragm configured to deform according to one or more component pressures (and differences of the same) provided along the interior diaphragm duct 1409 and the exterior diaphragm surface 1407. In one example, the valve operator, such as the diaphragm, is a component of and included with the muffler housing 1402. For instance, the valve operator 1406 is one or more surfaces surrounding a passage between the muffler intake 1404 and the muffler exhaust 1408 for the medical liquid flow 1416.

In operation, the medical sound muffler 1400 is retained in an open configuration with a medical liquid flow 1416 as shown in Figure 14A. The flow of medical liquid 1416 within the medical sound muffler 1400 generates a liquid pressure 1412 shown will illustrative arrows in Figure 14A. As further shown in Figure 14A, an ambient pressure 1410, such as atmospheric pressure, is applied to the exterior diaphragm surface 1407. In an open configuration the medical liquid flow 1416 accumulated within the muffler intake 1404 applies hydrostatic force, hydrodynamic force or the like to the interior diaphragm duct 1409. The applied forces initially open the valve operator 1406 and facilitate medical liquid flow 1416 through the interior diaphragm duct 1409. The flow of fluid through the interior diaphragm duct 1409 has a higher proportion of medical liquid relative to gas and accordingly exerts a greater pressure (in comparison to gas) against the interior diaphragm duct 1409 of the diaphragm 1406. As shown in Figure 14A, the ambient pressure 1410 and liquid pressure 1412, in this example, are sufficiently balanced to maintain the valve operator 1406 in the open configuration to continue flow of the medical liquid as shown.

Referring now to Figure 14B, a closed configuration of the medical sound muffler 1400 is provided. In this example, the accumulated flow of medical liquid is decreased and correspondingly has transitioned to a medical liquid and gas flow 1418 as shown with a dashed line in Figure 14B. According to Bernoulli’s principle, the medical liquid and gas flow 1418 includes relatively faster moving gas and thereby provides a liquid and gas pressure 1414 that is relatively less than the previously described liquid pressure 1412 shown in Figure 14A. The pressure supplied by the liquid and gas pressure 1414 to the interior diaphragm duct 1409 is correspondingly less than the liquid pressure 1412 and provides an imbalance between the liquid and gas pressure 1414 and ambient pressure 1410. Accordingly, the valve operator 1406, such as the diaphragm, deflects and closes based on the pressure imbalance thereby substantially arresting flow of the medical liquid and gas flow 1418. The medical liquid begins accumulating within the muffler intake 1404 until such time that the liquid pressure 1412 sufficiently builds to open the valve operator 1406 and provide the relatively balanced liquid pressure 1412 and ambient pressure 1410 configured to maintain the valve operator 1406 in the open configuration.

In this example, the medical sound muffler 1400 provides another example of a valve operator 1406 such as a diaphragm. The diaphragm is configured to automatically open and close as medical liquid accumulates, for instance within the muffler intake 1404, and thereafter triggers flow of the accumulated medical liquid in a consistent fashion through the medical sound muffler 1400 until the proportion of medical liquid sufficiently drops and the liquid and gas mix (having a lower liquid and gas pressure 1414) triggers closing of the valve operator 1406 (the diaphragm). Accordingly, noise generated, for instance, by mixing of gases and liquids is substantially suppressed because of the automatic closing and opening of the valve operator 1406.

Various Notes and Aspects

Aspect 1 can include subject matter such as a medical sound muffler for fluid collection comprising: a muffler housing configured for inclusion along a suction line, the muffler housing includes: a muffler intake; a muffler exhaust having a float seat; a float channel interposed between the muffler intake and the muffler exhaust, wherein the float channel includes a muffler sump configured to collect a liquid from the muffler intake; and wherein the muffler exhaust extends from the muffler sump transversely relative to the float channel; and a muffler float within the float channel, the muffler float is configured to move between closed and open configurations: in the closed configuration the muffler float is seated with the float seat and closes the muffler exhaust; and in the open configuration the muffler float is unseated from the float seat with a collected liquid in the muffler sump, and the muffler exhaust is open to the muffler sump.

Aspect 2 can include, or can optionally be combined with the subject matter of Aspect 1, to optionally include wherein in the closed configuration the muffler float seated with the float seat abates sound through the muffler intake from one or more of a suction pump or liquid and gas mixture.

Aspect 3 can include, or can optionally be combined with the subject matter of one or any combination of Aspects 1 or 2 to optionally include wherein the muffler float is configured to move according to a buoyant force with the collected liquid, and the muffler exhaust is configured to direct suction force transversely to the muffler float relative to the buoyant force.

Aspect 4 can include, or can optionally be combined with the subject matter of one or any combination of Aspects 1-3 to optionally include wherein the suction force includes one or more component forces unopposed to the buoyant force.

Aspect 5 can include, or can optionally be combined with the subject matter of one or any combination of Aspects 1-4 to optionally include wherein the suction force directed transversely by the float seat includes the suction force misaligned or extending laterally relative to the buoyant force.

Aspect 6 can include, or can optionally be combined with the subject matter of Aspects 1-5 to optionally include wherein the muffler exhaust extending transversely relative to the float channel includes the muffler exhaust misaligned with the float channel.

Aspect 7 can include, or can optionally be combined with the subject matter of Aspects 1-6 to optionally include wherein the muffler exhaust extending transversely relative to the float channel includes the muffler exhaust extending laterally relative to the float channel.

Aspect 8 can include, or can optionally be combined with the subject matter of Aspects 1-7 to optionally include wherein the muffler float includes an upper portion and a lower portion relative to gravity', and the muffler intake is proximate the lower portion of the muffler float in the closed configuration. Aspect 9 can include, or can optionally be combined with the subject matter of Aspects 1-8 to optionally include wherein the muffler float includes an upper portion and a lower portion relative to gravity, and the muffler exhaust is proximate the lower portion of the muffler float in the closed configuration.

Aspect 10 can include, or can optionally be combined with the subject matter of Aspects 1-9 to optionally include wherein the muffler float is a ball float.

Aspect 1 1 can include, or can optionally be combined with the subject matter of Aspects 1-10 to optionally include wherein one or both ends of the float channel include end contours configured to minimize vacuum retention.

Aspect 12 can include, or can optionally be combined with the subject matter of Aspects 1-11 to optional ly include wherein the muffler housing includes a vent port at an end of the float channel opposed to the muffler sump.

Aspect 13 can include, or can optionally be combined with the subject matter of Aspects 1-12 to optionally include a muffler shunt interposed between the muffler exhaust and an outlet port of the muffler housing, the muffler shunt includes: a shunt port in communication with the muffler exhaust; and a shunt intake extending from the shunt port to a muffler housing exterior of the muffler housing.

Aspect 14 can include, or can optionally be combined with the subject matter of Aspects 1-13 to optionally include wherein the shunt port is interposed between the float seat and the outlet port.

Aspect 15 can include, or can optionally be combined with the subject matter of Aspects 1-14 to optionally include wherein the float seat is interposed between the shunt port and a muffler sump floor of the muffler slump.

Aspect 16 can include, or can optionally be combined with the subject matter of Aspects 1-15 to optionally include wherein in the closed configuration the muffler shunt is configured to draw ambient fluid from the shunt intake to the outlet port to decrease suction force applied to the muffler float.

Aspect 17 can include, or can optionally be combined with the subject matter of Aspects 1-16 to optionally include wherein in the closed configuration the muffler shunt is configured to direct sound associated with a suction pump through the shunt intake and away from a technician. Aspect 18 can include, or can optionally be combined with the subject matter of Aspects 1-17 to optionally include a collection reservoir having a drain orifice with the muffler housing in communication with the drain orifice.

Aspect 19 can include, or can optionally be combined with the subject matter of Aspects 1-18 to optionally include a suction line with the muffler housing in communication with the suction line.

Aspect 20 can include, or can optionally be combined with the subject matter of Aspects 1 -19 to optionally include wherein the muffler float is a valve operator including one or more of a kinetically driven piston valve operator, piston valve operator, ball valve operator, diaphragm valve operator.

Aspect 21 can include, or can optionally be combined with the subject matter of Aspects 1-20 to optionally include a medical sound muffler for fluid collection comprising: a muffler housing configured for inclusion in a suction line, the muffler housing includes: a muffler intake; and a muffler exhaust; a muffler float interposed between the muffler intake and the muffler exhaust, the muffler float is configured to open and close the muffler exhaust with collected liquid; and a muffler shunt interposed between the muffler exhaust and an outlet port of the muffler housing, the muffler shunt includes: a shunt port in communication with the muffler exhaust; and a shunt intake extending from the shunt port to a muffler housing exterior of the muffler housing.

Aspect 22 can include, or can optionally be combined with the subject matter of Aspects 1-21 to optionally include wherein the muffler shunt is configured to divert gas from the muffler housing exterior to the shunt port and abate suction on the muffler float at the muffler exhaust.

Aspect 23 can include, or can optionally be combined with the subject matter of Aspects 1-22 to optionally include wherein the muffler shunt is configured to abate sound through the muffler intake based on abated suction on the muffler float at the muffler exhaust.

Aspect 24 can include, or can optionally be combined with the subject matter of Aspects 1 -23 to optionally include wherein the shunt intake is directed away from a technician, and the muffler shunt is configured to direct sound associated with a suction pump through the shunt intake and away from the technician. Aspect 25 can include, or can optionally be combined with the subject matter of Aspects 1-24 to optionally include wherein the muffler exhaust includes a float seat, and the muffler float, while closed, is seated with the float seat and across the muffler exhaust.

Aspect 26 can include, or can optionally be combined with the subject matter of Aspects 1-25 to optionally include wherein the shunt port is interposed between the float seat and the outlet port.

Aspect 27 can include, or can optionally be combined with the subject matter of Aspects 1-26 to optionally include wherein with the muffler float seated with the float seat the muffler shunt is configured to draw ambient gas from the shunt intake to the shunt port to abate suction on the muffler float at the muffler exhaust.

Aspect 28 can include, or can optionally be combined with the subject matter of Aspects 1-27 to optionally include wherein the muffler float is a valve operator including one or more of a kinetically driven piston valve operator, piston valve operator, ball valve operator, diaphragm valve operator.

Aspect 29 can include, or can optionally be combined with the subject matter of Aspects 1-28 to optionally include a medical sound muffler for fluid collection comprising: a suction line having an upstream portion and a downstream portion, wherein the upstream portion is configured for coupling with a collection reservoir and the downstream portion is configured for coupling with a source of suction; a muffler shunt interposed between the upstream and downstream portions, the muffler shunt includes: a shunt port in communication with the suction line; and a shunt intake extending from the shunt port to a shunt exterior; and wherein the muffler shunt is configured to draw ambient gas from the shunt intake to the shunt port to abate suction at least in the upstream portion of the suction line.

Aspect 30 can include, or can optionally be combined with the subject matter of Aspects 1-29 to optionally include wherein the muffler shunt is configured to increase pressure in the upstream portion relative to the downstream portion of the suction line, and abates sound from the upstream portion according to the increased pressure. Aspect 31 can include, or can optionally be combined with the subject matter of Aspects 1-30 to optionally include wherein the muffler shunt is configured to abate sound from liquid and gas mixtures under suction in the upstream portion according to the increased pressure.

Aspect 32 can include, or can optionally be combined with the subject matter of Aspects 1-31 to optionally include wherein the shunt intake is directed away from a technician, and the muffler shunt directs sound associated with a suction pump through the shunt intake and away from the technician.

Aspect 33 can include, or can optionally be combined with the subject matter of Aspects 1-32 to optionally include a method of attenuating sound generated while collecting liquids comprising: accumulating collected fluids in a float channel of a medical sound muffler in a closed configuration, accumulating collected fluids includes: closing a muffler exhaust with a muffler float within the float channel; and abating sound through a muffler intake of the medical sound muffler with the muffler float closing the muffler exhaust; draining accumulated collected fluids from the float channel in an open configuration, draining the accumulated collected fluids includes: opening the muffler exhaust with unseating of the muffler float; withdrawing the accumulated collected fluids from the float channel through the muffler exhaust; and closing the muffler exhaust with the muffler float.

Aspect 34 can include, or can optionally be combined with the subject matter of Aspects 1-33 to optionally include wherein accumulating the collected fluids in the float channel includes accumulating the collected fluids in a muffler sump underlying the muffler float.

Aspect 35 can include, or can optionally be combined with the subject matter of Aspects 1-34 to optionally include wherein accumulating the collected fluids in the float channel includes introducing the collected fluids to the float channel at a muffler intake underlying the muffler float.

Aspect 36 can include, or can optionally be combined with the subject matter of Aspects 1 -35 to optionally include wherein closing the muffler exhaust with the muffler float includes: seating the muffler float along a float seat of the muffler exhaust; and retaining the muffler float along the float seat with suction from a suction source in communication with the muffler exhaust. Aspect 37 can include, or can optionally be combined with the subject matter of Aspects 1-36 to optionally include wherein retaining the muffler float along the float seat with suction includes retaining the muffler float with suction in a transverse direction relative to movement of the muffler float within the float channel.

Aspect 38 can include, or can optionally be combined with the subject matter of Aspects 1-37 to optionally include wherein abating sound through the muffler intake includes suppressing sound downstream from the muffler float to the suction source with the muffler float closing the muffler exhaust.

Aspect 39 can include, or can optionally be combined with the subject matter of Aspects 1-38 to optionally include wherein closing the muffler exhaust with the muffler float decreases withdrawing of intermittently collected fluids through the muffler exhaust.

Aspect 40 can include, or can optionally be combined with the subject matter of Aspects 1-39 to optionally include wherein closing the muffler exhaust with the muffler float includes decreasing: mixing of accumulated collected fluids with gases; and sounds generated from mixing.

Aspect 41 can include, or can optionally be combined with the subject matter of Aspects 1-40 to optionally include wherein draining accumulated collected fluids from the float channel in the open configuration includes: interrupting the passage of gases through one or more of the muffler intake or the muffler exhaust with the accumulated collected fluids; and abating sound generated from mixing of gases and the accumulated collected fluids with the interrupting accumulated collected fluids.

Aspect 42 can include, or can optionally be combined with the subject matter of Aspects 1-41 to optionally include shunting ambient fluid to the muffler exhaust with a muffler shunt having a shunt port in communication with the muffler exhaust.

Aspect 43 can include, or can optionally be combined with the subject matter of Aspects 1 -42 to optionally include wherein shunting ambient fluid to the muffler exhaust includes attenuating suction of the muffler float at the muffler exhaust in the closed configuration. Aspect 44 can include, or can optionally be combined with the subject matter of Aspects 1-43 to optionally include wherein shunting ambient fluid to the muffler exhaust includes attenuating mixing of collected fluids with gases and sounds generated from mixing in the open configuration.

Aspect 45 can include, or can optionally be combined with the subject matter of Aspects 1-44 to optionally include a medical sound muffler for fluid collection comprising: a muffler housing configured for inclusion along a suction line, the muffler housing includes: a muffler intake; a muffler exhaust; and a valve operator within the muffler housing, the valve operator is configured to move between closed and open configurations: in the closed configuration the valve operator closes the muffler exhaust, accumulates liquid upstream of the valve operator, and the closed valve operator abates sound through the muffler intake from one or more of a suction source or liquid and gas mixture; and in the open configuration the valve operator opens the muffler exhaust and the muffler exhaust drains the accumulated liquid.

Aspect 46 can include, or can optionally be combined with the subject matter of Aspects 1 -45 to optionally include wherein the muffler housing includes a float channel, and the valve operator includes a muffler float received in the float channel.

Aspect 47 can include, or can optionally be combined with the subject matter of Aspects 1-46 to optionally include wherein the valve operator includes a kinetically driven piston valve operator configured to transition to the open configuration according to hydrostatic force or hydrodynamic force from the muffler intake.

Aspect 48 can include, or can optionally be combined with the subject matter of Aspects 1-47 to optionally include wherein the muffler intake is configured to direct hydrodynamic force toward the kinetically driven piston valve operator.

Aspect 49 can include, or can optionally be combined with the subject matter of Aspects 1 -48 to optionally include a biasing element configured to bias the kinetically driven piston valve operator toward the closed configuration. Aspect 50 can include, or can optionally be combined with the subject matter of Aspects 1-49 to optionally include wherein the biasing element includes a spring.

Aspect 51 can include, or can optionally be combined with the subject matter of Aspects 1-50 to optionally include wherein the muffler housing includes an actuator and the valve operator is coupled with the actuator; and the actuator is configured to open or close the valve operator.

Aspect 52 can include, or can optionally be combined with the subject matter of Aspects 1-51 to optionally include wherein the actuator includes one or more of a solenoid actuator, electromechanical actuator, motor, pneumatic actuator or the like.

Aspect 53 can include, or can optionally be combined with the subject matter of Aspects 1-52 to optionally include an accumulation sensor in communication with the actuator, wherein the accumulation sensor detects accumulated liquid upstream of the muffler intake; and wherein the actuator is configured to move the valve operator to the open configuration according to detection of the accumulated liquid upstream of the muffler intake.

Aspect 54 can include, or can optionally be combined with the subject matter of Aspects 1-53 to optionally include wherein the accumulation sensor includes one or more of an accelerometer, a flow meter, a pressure sensor, a visible light photoelectric sensor or infrared photoelectric sensor.

Aspect 55 can include, or can optionally be combined with the subject matter of Aspects 1-54 to optionally include wherein the valve operator includes one or more of a piston valve operator or a ball valve operator.

Aspect 56 can include, or can optionally be combined with the subject matter of Aspects 1-55 to optionally include wherein the valve operator includes a pliable diaphragm having an exterior diaphragm surface and an interior diaphragm duct extending between the muffler inlet and the muffler exhaust.

Aspect 57 can include, or can optionally be combined with the subject matter of Aspects 1 -56 to optionally include wherein: in the open configuration the pliable diaphragm opens the muffler exhaust according to a pressure balance along the exterior diaphragm surface and the interior diaphragm duct because of the accumulated liquid within the interior diaphragm duct; and in the closed configuration the pliable diaphragm closes the muffler exhaust according to a pressure imbalance along the exterior diaphragm surface and the interior diaphragm duct because of mixed liquid and gas within the interior diaphragm duct.

Aspect 58 can include, or can optionally be combined with the subject matter of Aspects 1-57 to optionally include wherein the muffler exhaust is configured to direct a suction force transverse to a movem ent direction of the valve operator.

Each of these non-limiting aspects can stand on its own, or can be combined in various permutations or combinations with one or more of the other aspects.

The above description includes references to the accompanying drawings, which form a part of the detailed description. The drawings show, by way of illustration, specific embodiments in which the invention can be practiced. These embodiments are also referred to herein as “aspects” or “examples.” Such aspects or example can include elements in addition to those shown or described. However, the present inventors also contemplate aspects or examples in which only those elements shown or described are provided. Moreover, the present inventors also contemplate aspects or examples using any combination or permutation of those elements shown or described (or one or more features thereof), either with respect to a particular aspects or examples (or one or more features thereof), or with respect to other Aspects (or one or more features thereof) shown or described herein.

In the event of inconsistent usages between this document and any documents so incorporated by reference, the usage in this document controls.

In this document, the terms “a” or “an” are used, as is common in patent documents, to include one or more than one, independent of any other instances or usages of “at least one” or “one or more.” In this document, the term “or” is used to refer to a nonexclusive or, such that “A or B” includes “A but not B,” “B but not A,” and “A and B,” unless otherwise indicated. In this document, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Also, in the following claims, the terms “including” and “comprising” are open-ended, that is, a system, device, article, composition, formulation, or process that includes elements in addition to those listed after such a term in a claim are still deemed to fall within the scope of that claim. Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects.

Geometric terms, such as “parallel”, “perpendicular”, “round”, or “square”, are not intended to require absolute mathematical precision, unless the context indicates otherwise Instead, such geometric terms allow for variations due to manufacturing or equivalent functions. For example, if an element is described as “round” or “generally round,” a component that is not precisely circular (e.g., one that is slightly oblong or is a many-sided polygon) is still encompassed by this description.

The above description is intended to be illustrative, and not restrictive. For example, the above-described aspects or examples (or one or more aspects thereof) may be used in combination with each other. Other embodiments can be used, such as by one of ordinary skill in the art upon reviewing the above description. The Abstract is provided to comply with 37 C.F.R. §1.72(b), to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it wall not be used to interpret or limit the scope or meaning of the claims. Also, in the above Detailed Description, various features may be grouped together to streamline the disclosure. This should not be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description as aspects, examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that such embodiments can be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.