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Matches 401 - 450 out of 2,914

Document Document Title
WO2001078893A3
The invention provides microfluidic devices with embedded fluidic impedances. Such impedancesdo not allow fluid to pass at a low differential pressure, but allow fluid to flow at a higher differential pressure. Impedances are formed by t...  
WO/2002/042650A1
A valve device for conveying a liquid (4) comprises a main bore (15) including a hydrophobic region (40). The main bore (15) includes a vent channel (60) in fluid communication with the hydrophobic region (40). Also disclosed is a method...  
WO2002001163A3
A device for sensing fluid movement within a microfluidic channel which uses feedback to control its operation. The device measures electric parameters to interpret fluidic parameters such as flow speed, and the presence or absence of fl...  
WO/2002/040874A1
The present invention provides microfluidic devices and methods for using the same. In particular, microfluidic devices of the present invention are useful in conducting a variety of assays and high throughput screening. Microfluidic dev...  
WO2002001081A3
A valve for use in microfluidic structures. The valve uses a spherical member, such as a ball bearing, to depress an elastomeric member to selectively open and close a microfluidic channel. The valve may be operated manually or by use of...  
WO/2002/037661A1
An actuator device controlling the shape of a flexible surface having a quasi-continuum in a plurality of locations. The device includes a plurality of individual cells arranged in an array for contact with the flexible surface. The cell...  
WO2001089695A3
A valve for use in laminated plastic microfluidic structures. The valve allows one-way flow through microfluidic channels for use in mixing, dilution, particulate suspension and other techniques necessary for flow control in analytical d...  
WO/2002/034195A1
a backload-responsive fluidic switch having high pressure recovery of more than 50% comprises a body member with a power nozzle (PN) having a width W and a centerline CL which is adapted to be coupled to a source of fluid under pressure ...  
WO/2002/033268A2
An improved microvalve device (300) is configured to provide a more robust and durable operation to withstand the demands of various operating environments. The microvalve may comprise a valve seat (302) and a diaphragm (304), with the d...  
WO2001089691A3  
WO2001089692A3
A device for performing polymerase chain reaction (PCR) amplification and detection using microfluidic diffusion-based structures. Fluid containing DNA to be amplified is cycled repeatedly across hot and cold zones to enhance the multipl...  
WO/2002/027194A1
The invention relates to a micro valve normally in a closed position, comprising a membrane (80), an activating device (100) for controlling the deformation of the membrane (80) and a valve seal (180) which is deformed by the controllabl...  
WO/2002/026301A1
A dosing device comprising a dispensing means (26) for dispensing a dose material and a dose actuation mechanism (44) is provided. The dose actuation mechanism (44) comprises a number of integrally hinged links (52, 54, 55) which are con...  
WO/2002/026300A1
There is provided a pressure-responsive means (40) suitable for use in an inhaler, the pressure-responsive means (40) comprising a closed frame (42) over which is fixed a membrane (44), a tongue (46) being supported on the membrane (44)....  
WO/2002/024320A1
A very small chemical device with a valve function, having high pressure-resistance and a flow channel cross-sectional area independent of liquid pressure, capable of suppressing adsorption of living body components, and easy to manufact...  
WO2001098688A3
A microvalve device (825) for controlling fluid flow in a fluid circuit. The microvalve device comprises a body (842) having a cavity (844, 846) formed therein. An electronically controlled automatic transmission, comprising a microvalve...  
WO/2002/022492A2
A MEMS valve device driven by electrostatic forces is provided. The MEMS valve device includes a substrate having an aperture formed therein, a substrate electrode, a moveable membrane that overlies the aperture and has an electrode elem...  
WO/2002/022250A2
The present invention relates to microfluidics and in particular to a fluidic microreactor and constituent parts of such a microreactor. The production in a number of microreactors and the sampling of a number of fluids, that is, reactor...  
WO/2002/023161A1
Multifluidic devices and methods are provided for enhancing detection of a diffusion pattern formed by particles diffusing between at least two fluid streams (I) parallel laminar flow such that an interface is formed between them by incr...  
WO/2002/022267A2
A microfluidic device having a coating on a surface which surface properties can be altered by applying an external stimulus. Such a surface change may be used to guide or direct fluid on these surfaces, thus controlling flow in the micr...  
WO/2002/018885A1
The invention concerns a method for measuring the oscillation frequency of a fluid jet in a fluidic oscillator using a heat sensor. The resistance of the heat sensor varies according to the jet oscillation frequency f¿o?. The method con...  
WO/2002/018785A1
According to the present invention, there is provided a micro-fluidic sensor system (6) including a micro-conduit (56) for carrying fluid therethrough having a flexible wall portion (18), at least one micro-fluidic actuator having a clos...  
WO/2002/018756A1
According to the present invention, there is provided a micro-fluidic actuator (10) including a closed cavity (11), flexible mechanism (18) defining a wall of the closed cavity, and expanding mechanism (14) disposed in the closed cavity....  
WO/2002/018827A1
According to the present invention, there is provided a micro-fluidic valve (10) including a micro conduit (20) for carrying fluid there through and at least one micro actuating mechanism (16) for selectively deflecting at least a portio...  
WO/2002/012734A1
A method of controlling fluid flow within a microfluidic circuit (10) using external valves and pumps connected to the circuit (10) is disclosed. The external valves and pumps, which are not a part of the microfluidic substrate (11), con...  
WO2002001184A8
A device for assisting in fluid mixing within microfluidic sized structures. Chemicals and other biological specimens are exposed to a small volume of reagent, and said reagent is delivered to said specimens by a novel mixing technique, ...  
WO/2002/007893A1
Spa nozzles (11) having dual fluidic nozzles capable of submerged operation and of selectively providing straight, concentrated, non-oscillating jets with air entrainment (18) or an oscillating jet of slugs of water in water to provide a...  
WO/2002/007884A2
The movement and mixing of microdroplets through microchannels is described employing microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. Microdroplets are m...  
WO2001021988A9
An in-channel check valve assembly (116) is disclosed comprising, an in-channel check valve (100), connected between the front (110) and rear (114) of a channel (102) attached to a silicon substrate (106). The channel may have a width be...  
WO/2002/001078A1
The invention concerns an actuator system comprising: a pyrotechnic microthruster matrix (100) and means for respectively controlling said microthrusters (100), adapted to generate a desired specific effect.  
WO/2002/001081A2
A valve for use in microfluidic structures. The valve uses a spherical member, such as a ball bearing, to depress an elastomeric member to selectively open and close a microfluidic channel. The valve may be operated manually or by use of...  
WO/2002/001184A1
A device for assisting in fluid mixing within microfluidic sized structures. Chemicals and other biological specimens are exposed to a small volume of reagent, and said reagent is delivered to said specimens by a novel mixing technique, ...  
WO/2002/001163A2
A device for sensing fluid movement within a microfluidic channel which uses feedback to control its operation. The device measures electric parameters to interpret fluidic parameters such as flow speed, and the presence or absence of fl...  
WO/2001/098688A2
A microvalve device (825) for controlling fluid flow in a fluid circuit. The microvalve device comprises a body (842) having a cavity (844, 846) formed therein. An electronically controlled automatic transmission, comprising a microvalve...  
WO2001051777A3
The invention relates to a flow switch comprising a feed channel (1), a Coanda tulip (5), at least two outlets (11 and 12) and a displacement body (6) which is arranged in the area of the Coanda tulip (5) and is provided with a flow surf...  
WO2001051776A3
The invention relates to a fluidic switching element consisting of a feed channel (1), a Coanda tulip (5), at least two outlets (11, 12) and a displacement body (6) that is arranged in the area of the Coanda tulip (5) and is provided wit...  
WO/2001/094823A1
A micro-fabricated structure (320) includes a housing (322) defining an actuation chamber (303) with a set of electrodes (304) formed therein. A movable micro-fabricated structure (324) is positioned proximate to the actuation chamber (3...  
WO/2001/089691A2
A capillary for introduction of whole blood into an analysis. The capillary has a variable volume along its length, which allows the liquid sample to be drawn into the interior of the cartridge, away from the inlet, reducing the risk of ...  
WO/2001/089682A2
A device and method of addressing a microfluidic cartridge to interface with external fluid supplies and external activation of internal control devices. The fluid interface couples the microfluidics of the cartridge to the macrofluidics...  
WO/2001/089692A2
A device for performing polymerase chain reaction (PCR) amplification and detection using microfluidic diffusion-based structures. Fluid containing DNA to be amplified is cycled repeatedly across hot and cold zones to enhance the multipl...  
WO/2001/089696A2
A device for generating a stable concentration gradient in a microfluidic channel. A solution of a given concentration of a soluble compound and a diluting solution are co-delivered into a microfluidic channel. By varying the flow rates ...  
WO/2001/089675A2
A device for mixing separate distinct fluids within a microfluidic device to form a substantially homogeneous flow stream. The device is generally circular-shaped and contains no moving parts, and is capable of mixing both serial and lam...  
WO/2001/090614A2
A passive valve for use within microfluidic structures. Surface tension forces developed within microscale channels are used to control flow within the channels. Flow can be halted within a channel until fluid force reaches a predetermin...  
WO/2001/089695A2
A valve for use in laminated plastic microfluidic structures. The valve allows one-way flow through microfluidic channels for use in mixing, dilution, particulate suspension and other techniques necessary for flow control in analytical d...  
WO2001026813A3
A microfluidic device which operates without the need for an external power source. The device includes a body structure, at least one microscale channel within the structure, a port for introducing fluid into the channel, and a power so...  
WO/2001/086154A1
A method of forming a fluid tight seal between a first fluid pathway (22) and a second fluid pathway (12) comprising the steps of: defining a volume (18) between an outer surface of the first fluid pathway (14) and an inner surface of th...  
WO/2001/086155A1
A adaptor for receiving a fluidic device (12) and facilitating connection of the device (12) to a similar device or other object, the device having defined therein at least one fluid pathway (24), the adaptor being capable of receiving f...  
WO/2001/078893A2
The invention provides microfluidic devices with embedded fluidic impedances. Such impedancesdo not allow fluid to pass at a low differential pressure, but allow fluid to flow at a higher differential pressure. Impedances are formed by t...  
WO/2001/071226A2
A microvalve device for controlling fluid flow in a fluid circuit (10). The microvalve device comprises a body (12) having a cavity formed therein. The body further has first (20) and second (22) pilot ports placed in fluid communication...  
WO2001029433A3
The invention relates to a device for dynamically monitoring pressure differences in at least two pressure pipes (207, 211), preferably in safety valves of pneumatically operated consumers. The inventive device is characterized in that, ...  

Matches 401 - 450 out of 2,914