WO2008110179A4

WO2008110179A4 - Dental extraction forceps with lock, pressure controlling unit and vibrating aid

Info

Publication number: WO2008110179A4
Application number: PCT/EG2008/000011
Authority: WO
Inventors: Yasser Fathi Hussein Ali
Original assignee: Yasser Fathi Hussein Ali
Priority date: 2007-03-12
Filing date: 2008-03-04
Publication date: 2010-03-04
Also published as: WO2008110179A2; WO2008110179A3

Abstract

Dental extraction forceps with lock pressure controlling unit (7) and vibrating unit (9) is a device used by dentists to remove teeth. The new design is aimed to be locked during extraction after obtaining the desired grip and at optimum pressure, also extraction procedure may be aided by supplemental vibrating unit (9). The lock may be made in different designs such as: making indentation or holes on the arms (1, 2) of the forceps and a strong wire is passed through this indent or hole and at the desired position determined by pressure gauge the wire is turned to lock the handle in specific position, finally the forceps may be designed with a single handle like the ordinary French key or through a long spiral. The pressure controlling unit (7) may be constructed in different forms such as coil, plastics, compressible oil filled chamber. The vibrating unit (9) is simply a rigid connection between the extraction forceps with the source of vibration.

Claims

AMENDED CLAIMS received by the International Bureau on 21 October 2009 (21.10.2009)

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; The instrument is composed of The jaw member which is working jaws, handles, lock unit which may be referred as lock design or lock mechanism, pressure controlling unit and vibrating unit.

Claim 2; According to claim 1 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 3; According to claim 2; A mean of attachment of the jaws to the handle is a pin positioned across holes of the arm(stud) projection and the removable working end

Claim 4; According to claim I ; the forceps is designed with a single handle and the head is designed to achieve the mechanism of the ordinary French key. Claim 5; According to claim 1; the lock mechanism is designed, 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 6; According to claim 1; 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)

15 Claim 7; According to claim 1; there are five designs to develop pressure controlling 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 aims of the extraction forceps in the illustrated design.

Claim 8; According to claim 6; 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 9; According to claim 6; the second design is chromatic material which change its color with different pressure.

'Claim 10; According to claim 6; 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 11; According to claim 6; 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 12; According to claim 6; Whatever the pressure controlling unit is, an indicator of the pressure may be aided and monitored by a malleable or

16 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 soil of coil or other metallic mechanism may be used or any known indicator,

17