| WO/2016/038790 | TOOTH EXTRACTION FORCEPS |
| WO/2012/048088 | DENTAL PLIERS WITH ADJUSTABLE BUMPER |
| EP0054192A1 | ||||
| GB1493730A | ||||
| US20050214719A1 | ||||
| JP2001198142A | ||||
| CH615093A5 | ||||
| LU90398A1 | 2001-04-30 | |||
| GB672387A |
| Claims
Claim 1; Design for dental extraction forceps and similar medical instruments to be locked during extraction after obtaining the desired grip and desired pressure, which might be standardized, the extraction process may be aided by external vibration aid; this design is supposed to decrease effort of the dentist and reduce the possibility of teeth fracture. The forceps may be fabricated from metallic, non-metallic or combination materials. The forceps may be wrapped with a sheath made of metallic, polymeric or combination of metallic, ceramic, or polymeric materials such as high-performance polyetheretherketones, PEEK-OPTIMA or PEEK-CLASSIX or any other suitable polymer. The sheath may be either disposable or easily sterilized. Claim 2; The instrument is composed of working jaws, handles, lock unit which may be referred as lock design or lock mechanism, pressure controlling unit and vibrating unit.
Claim 3; According to claim 2; The jaw member is the working end with its main function is to grip the tooth firmly with conventional designs to accommodate the tooth without fracture. Claim 4; According to claim 3 the jaw member may be constructed in the conventional manner or alternatively is ended by a metal rigid stud or similar ending rod to provide a mean of attachment to removable working ends.
Claim 5; According to claim 3 the mean of attachment of the working end and the rigid stud may be male and female polyhedral pieces, i.e. the arm is a male polyhedral, rectangular or square form(male part) and the removable working end replacement is a hollow(female part) correspond to the male part or vice versa.
Claim 6; According to claim 3; A mean of attachment is a pin positioned across holes of the arm(stud) projection and the removable working end Claim 7; According to claim 3; Using a screw like male and female working ends.
Claim 8; According to claim 2; The lock mechanism may be made in six different designs such as: making indentation or holes, rigid ring, male and female pins, malleable horse shoe, like the ordinary French key or finally through a long spiral.
Claim 9; According to claim 8; the lock mechanism may be designed by making indentation or holes on the handles of the conventional forceps and a strong wire is passed through this indent or hole and at the desired position the wire is turned to lock the handle in position.
Claim 10; According to claim 8; The second design for the lock mechanism is making a rigid ring surrounding the handles of the conventional forceps above the joint and anchor the handle of the forceps which is made serrated in direction that permits moving of the ring in one way and at desired position it is irretrievable at the desired position.
To free this ring more squeezing of the handles are require so get separated from the handle.
Claim 11; According to claim 8; The third design is making what resemble male and female pins fixed in the interior surfaces of the two handles of conventional extraction forceps.
Claim 12; According to claim 8; The fourth design is constructed in the form of malleable horse shoe with its free ends has screws to be fitted with its corresponding wrenches so as the screw is driven the arms of the horse shoe tighten and fit the forceps.
Claim 13; According to claim 8; in the fifth design the forceps may be designed with a single handle and the head is designed like the ordinary
French key.
Claim 14; According to claim 8; The sixth design, as shown in this example, drawing through a long spiral. In this model the forceps is formed of a fixed arm connected to the terminal working end while the other working end is a part of working arm sliding through sliding car (traveling car) on special slot. To confirm the precision of attachment between traveling car and the slot so as the movement of the traveling car is precisely move in one path with no jerky movements; the traveling car is connected through more than one pin or using longitudinal projection on the sleeves of the fixed arm. The traveling car ends by a wrench, nut or similar mechanisms; on turning the nut the traveling car moves across a spiral rod away or towards the fixed arm jaw according to the direction of turning. The lock mechanism may be assisted by securing nut or similar component for tightening the locking nut, alternatively
Claim 15; According to claim 8; Another design for the lock mechanism is to move the traveling car and lock it in position and consequently fix the working jaw using the pneumatic lock where the traveling car is positioned in a pestle like mechanism in a closed chamber through adjustable valve. And compressed air is used to move the traveling arm by applying pressure on the pestle like system.
Claim 16; According to claim 2; The pressure controlling unit may be fabricated in different designs. The purpose of the pressure controlling unit is to obtain precise standardization of the extraction process at different stages, for example the dentist is advised that for extraction of anterior teeth adjust the pressure controlling unit at 60-80 mmHg(0.08- 0.1 bars), for premolars 80-100 mmHg (0.1-0.13 bars) for molars 100- 120 mmHg (0.13-0.16 bars) and for deciduous 40-60 mmHg (0.5-0.8 bar)(these numbers are under investigation by oral surgeon team and not yet precisely approved and may be personally or optimized by standardizing team)
Claim 17; According to claim 2; There are five designs to develop pressure control unit in the extraction forceps with lock. Which is usually positioned in a split of the longitudinal screw or the French key like- design. Or between the two arms of the extraction forceps in other designs.
Claim 18; According to claim 17; The first design is a malleable chamber with valve filled with colored liquid such as (hydraulic oil) positioned in between the longitudinal screw. This chamber is connected to graduated tube to be shown alongside the forceps handle; the amount(or length) of the extruded fluid is proportional to the applied pressure. So at the desired force(pressure) the dentist can simply lock the forceps. Or the pressure of the liquid is monitored by pressure gauge.
Claim 19; According to claim 17; The second design is chromatic material which change its color with different pressure.
Claim 20; According to claim 17; The third design is resilient material as rubber with known compression value, so the length between the two portions of the split is corresponding to the applied pressure.
Claim 21; According to claim 17; The forth design is a coil connected to pressure gauge. Or alternatively the distance between the two parts of the split where the coil is attached is measured wherein the distance is inversely proportional to the applied pressure.
Claim 22; According to claim 17; the fifth design to develop pressure control unit in the extraction forceps with lock is the pneumatic type., where pressure is applied and controlled by air pressure from the dental unit, or other source, through controlling valve monitored by pressure gauge. This is the pneumatic type.
Claim 23; According to claim 17; Whatever the pressure controlling unit is, an indicator of the pressure may be aided and monitored by a malleable or compressible chamber filled with fluid or similar materials and pass through a narrow tube connected to an indicator to be seen in a clear area, alternatively a sort of coil or other metallic mechanism may be used or any known indicator. Claim 24; According to claim 2; The vibrating aid is simply a rigid connection between the extraction forceps with the source of vibration which varies between very slow motion to ultrasonic vibration. Also the magnitude of the motion cycle varies and controlled by the dentist. The aim of this unit is to facilitated extraction by destruction of periodontal ligaments. |
DENTAL EXTRACTION FORCEPS WITH LOCK, PRESSURE CONTROLLING UNIT AND VIBRATING AID
Technical field:
The present invention relates to dental and medical instruments and devices used for extraction and removal o teeth and similar purposes. To reduce the human effort and standardize the procedures of extraction.
Background art:
Teeth extraction as used herein is a broad term used to describe ordinary extraction of normal teeth such as in case of orthodontics, highly broken down teeth, remaining roots, bone exstoses. These procedures are carried out using the ordinary dental extraction forceps which resemble the conventional pliers designed as two arms (handles) connected by pivots and extended to the working ends(jaws) which have different shapes and designs to fit specific teeth. Then the dentist press firmly at desired grip and move the tooth in specific directions to loosen it.
There are several types of tooth extracting forceps and there general features include beaks, a neck, and handles. The inner surface of each of the two beaks is concave and the outer surface is convex. The beaks of tooth extracting forceps are designed to grasp the tooth with maximum contact on the surface of the root(s).
The beak always so shapes that it adapts to the tooth contours. They are angled differently as per the tooth location. Some are angled towards the handles, others away from it and suit the extraction of tooth in the upper and lower jaws respectively. Another way to identify the right forceps is by its neck. The neck needs to be parallel to the long axis of the tooth. Handle is shaped that it applies maximum force on the beak. Forceps with beaks in line with the handle are used to maxillary incisors and cuspids. Forceps with straight handles and offset, short and narrow beaks are
used for overlapping maxillary incisors and root tips. Maxillary universal forceps can be used in any region of the maxillary arch. They have angled beaks. Similarly for each region of the mouth and each type of tooth there is a specific type of extracting forceps. Shortage of the previous art:
1. Fatigue of the muscles of dentist specially wrest muscles on continuous gripping of the forceps during extraction.
2. Slight loosening of the pressure during tooth movement convert the compressive stress applied on the tooth to shear stress resulting in fracture.
3. Un standardized pressure application may lead to rupture of the tooth during gripping(depend on ductile sensation and experience of the operator)
4. Different sizes of the forceps are required to accommodate different shapes and sizes of the teeth; this means extra cost and extra space for storage of forceps and extra training of the assistant.
Disclosure of invention
Design for dental extraction forceps and similar medical instruments to be locked during extraction after obtaining the desired grip and desired pressure, which might be standardized, the extraction process may be aided by external vibration aid; this design is supposed to decrease effort of the dentist and reduce the possibility of teeth fracture during extraction. The forceps may be fabricated from metallic, non-metallic or combination materials.
The instrument is composed of working jaws, handles, lock unit which may be referred as lock design or lock mechanism, pressure controlling unit and vibrating unit.
The forceps may be wrapped with a sheath made of metallic, polymeric or combination of metallic, ceramic, or polymeric materials
such as high-performance polyetheretherketones, PEEK-OPTIMA or PEEK-CLASSIX or any other suitable polymer. The sheath may be either disposable or easily sterilized.
The jaw member is the working end may be constructed in the conventional manner or alternatively is ended by a metal rigid stud or similar ending rod to provide a mean of attachment to removable working ends. The mean of attachment may be male and female polyhedral pieces, i.e. the arm is a male polyhedral, rectangular or square form(male part) and the working end replacement is a hollow(female part) correspond to the male part. Or vice versa. Other mean of attachment may be in the form of pin positioned across holes of the arm(stud) projection. Or finally screw like male and female working ends.
The lock mechanism may be made in six different designs such as: the first design is making indentation or holes on the handles of the conventional forceps and a strong wire is passed through this indent or hole and at the desired position the wire is turned to lock the handle in position. The second design is making rigid ring surrounding the handles of the conventional forceps above the joint and anchor the handle of the forceps which is made serrated in direction that permits moving of the ring in one way and at desired position it is irretrievable at the desired position; To free this ring more squeezing of the handles are require so get separated from the handle. The third design is making what resemble male and female pins fixed in the interior surfaces of the two handles of conventional extraction forceps. The fourth design is constructed in the form of malleable horse shoe with its free ends has screws to be fitted with its corresponding wrenches so as the screw is driven the arms of the horse shoe tighten and fit the forceps. The fifth design the forceps may be designed with a single handle at the head is designed like the ordinary French key. Finally the sixth design, as shown in this example, drawing through a long spiral. In this model the forceps is formed of a fixed arm connected to the terminal working end
while the other working end is a part of working arm sliding through sliding car (traveling car). Controlling of the movement of this traveling car may be accomplished through two mechanisms in the first the traveling car moves on special slot or sleeves on the fixed arm and the traveling car ends by a wrench, nut or similar mechanisms on turning the nut the traveling car moves across a spiral rod away or towards the fixed arm jaw according to the direction of turning. Another mechanism to move the traveling car and lock it in position and consequently fix the working jaw is the pneumatic lock where the traveling car is positioned in a pestle like mechanism in a closed chamber through adjustable valve. And compressed air is used to move the traveling arm.
The pressure controlling unit may be fabricated in five different designs. The purpose of the pressure controlling unit is to obtain precise standardization of the extraction process, for example the dentist is advised that extraction of anterior teeth adjust the pressure controlling unit at 60-80 mmHg(0.08-0.1 bars), for premolars 80-100 mmHg (0.1-0.13 bars) for molars 100-120 mmHg (0.13-0.16 bars) and for deciduous 40-60 mmHg (0.5-0.8 bar)(these numbers are under investigation by oral surgeon team and not yet precisely approved and may be personally adjusted) There are five designs to develop pressure control unit in the extraction forceps with lock. Which is usually positioned in a split of the longitudinal screw of the French key like-design. Or between the two arms of the extraction forceps in other designs. The first design is a malleable chamber with valve filled with colored liquid such as (hydraulic oil) positioned in between the longitudinal screw. This chamber is connected to graduated tube to be shown alongside the forceps handle; alternatively the compressible oil is not allowed to escape instead pushing a movable pestle of closed container filled with air or compressible fluid such as hydraulic oil. So at the desired force(pressure) the dentist can simply lock the forceps. Or the pressure of the liquid is monitored by pressure gauge. The second
design is chromatic material which change its color with different pressure. The third design is resilient material as rubber with known compression value, so the length between the two portions of the split is corresponding to the applied pressure. The forth design is a coil connected to pressure gauge, fifth design to develop pressure control unit in the extraction forceps with lock is the pneumatic type., where pressure is applied and controlled by air pressure pushing a movable pestle of closed container filled with air or compressible fluid such as hydraulic oil. The pressing force is driven from the dental unit through controlling valve monitored by pressure gauge. Whatever the pressure controlling unit is, an indicator of the pressure may be aided and monitored by a malleable or compressible chamber filled with fluid or similar materials and pass through a narrow tube connected to an indicator to be seen in a clear area, alternatively a sort of coil or other metallic mechanism may be used.
The vibrating aid is simply a rigid connection between the extraction forceps with the source of vibration which varies between very slow motion to ultrasonic vibration. Also the magnitude of the motion cycle varies and controlled by the dentist. The aim of this unit is to facilitated extraction by destruction of periodontal ligaments.
Brief description of the drawing; 1 - fixed arm
2- removable arm
3- nut connected to the spiral for moving the traveling car and consequently the removable arm.
4-travelling car connected to the removable arm, travel through concise way on the fixed arm(l)
5- head of the extraction forceps
6- heads with different shapes connected to the main head to suit desired purposes. The connection may be vial polyhedral male and female parts or via screws or pins.
7- connection between the removable arm, fixed arm and removable arm.
8- pressure controlling unit may be in many forms such as coil, plastics, compressible oil filled chamber. It make and monitor the pressure applied on teeth during extraction. This site may be replaced to another site between head of the forceps and tooth.
9- vibrating unit.
Best Modes For Carrying Out The Invention:
The design is manufactured in the usual manner of fabrication of surgical instruments including casting, milling and cold working.
The jaw member is the working end may be constructed in the conventional manner or alternatively is ended by a metal rigid stud or similar ending rod to provide a mean of attachment to removable working ends.
The mean of attachment may be male and female polyhedral pieces, i.e. the arm is a male polyhedral, rectangular or square form(male part) and the working end replacement is a hollow(female part) correspond to the male part. Or vice versa.
Other mean of attachment is a pin positioned across holes of the arm(stud) projection
Or finally screw like male and female working ends.
The lock mechanism may be made in different designs such as: making indentation or holes on the handles of the conventional forceps and a strong wire is passed through this indent or hole and at the desired position the wire is turned to lock the handle in position.
The second design is making rigid ring surrounding the handles of the conventional forceps above the joint and anchor the handle of the forceps which is made serrated in direction that permits moving of the ring in one way and at desired position it is irretrievable at the desired position. To free this ring more squeezing of the handles are require so get separated from the handle.
The third design is making what resemble male and female pins fixed in the interior surfaces of the two handles of conventional extraction forceps.
The fourth design is constructed in the form of malleable horse shoe with its free ends has screws to be fitted with its corresponding wrenches so as the screw is driven the arms of the horse shoe tighten and fit the forceps.
In the fifth design the forceps may be designed with a single handle at the head is designed like the ordinary French key.
Finally the sixth design, as shown in this example, drawing through a long spiral. In this model the forceps is formed of a fixed arm connected to the terminal working end while the other working end is a part of working arm sliding through sliding car (traveling car) on special slot or sleeves of the fixed arm the traveling car ends by a wrench, nut or similar mechanisms on turning the nut the traveling car moves across a spiral rod away or towards the fixed arm jaw according to the direction of turning.
Another mechanism to move the traveling car and lock it in position and consequently fix the working jaw is the pneumatic lock where the traveling car is positioned in a pestle like mechanism in a closed chamber through adjustable valve. And compressed air is used to move the traveling arm.
The pressure controlling unit may be fabricated in different designs. The purpose of the pressure controlling unit is to obtain precise standardization of the extraction process, for example the dentist is advised that extraction of anterior teeth adjust the pressure controlling unit at 60-80 mmHg(0.08-0.1 bars), for premolars 80-100 mmHg (0.1-0.13 bars) for molars 100-120 mmHg (0.13-0.16 bars) and for deciduous 40-60 mmHg (0.5-0.8 bar)(these numbers are under investigation by oral surgeon team and not yet precisely approved and may be personally adjusted) There are five designs to develop pressure control unit in the extraction forceps with lock. Which is usually positioned in a spit of the longitudinal
screw of the French key like- design. Or between the two arms of the extraction forceps in other designs. The first design is a malleable chamber with valve filled with colored liquid such as (hydraulic oil) positioned in between the longitudinal screw. This chamber is connected to graduated tube to be shown alongside the forceps handle. So at the desired force(pressure) the dentist can simply lock the forceps. Or the pressure of the liquid is ministered by pressure gauge. The second design is chromatic material which change its color with different pressure. The third design is resilient material as rubber with known compression value, so the length between the two portions of the split is corresponding to the applied pressure. The forth design is a coil connected to pressure gauge, fifth design to develop pressure control unit in the extraction forceps with lock is the pneumatic type., where pressure is applied and controlled by air pressure from the dental unit through controlling valve monitored by pressure gauge.
Whatever the pressure controlling unit is, an indicator of the pressure may be aided and monitored by a malleable or compressible chamber filled with fluid or similar materials and pass through a narrow tube connected to an indicator to be seen in a clear area, alternatively a sort of coil or other metallic mechanism may be used.
The vibrating aid is simply a rigid connection between the extraction forceps with the source of vibration which varies between very slow motion to ultrasonic vibration. Also the magnitude of the motion cycle varies and controlled by the dentist. The aim of this unit is to facilitated extraction by destruction of periodontal ligaments.
Industrial application:
Dental extraction forceps with lock, pressure controlling unit and vibration unit used by dentists.