CN2400068Y

CN2400068Y - Percussopunctator protractor

Info

Publication number: CN2400068Y
Application number: CN 99247229
Authority: CN
Inventors: 王万宗; 厉建刚; 陈维杰
Original assignee: WANG WANZING
Current assignee: WANG WANZING
Priority date: 1999-11-24
Filing date: 1999-11-24
Publication date: 2000-10-11
Anticipated expiration: 2009-11-24

Abstract

The utility model relates to a plum needle extractor for the department of orthopaedics, which is integrally forcipated, wherein one forceps handle is a straight handle of which the front part and the back part are flat and straight; the shape of the front end of the forceps handle is in accordance with that of an intracavity of a plum needle, and the inner side of the front end is provided with a notch. The other forceps handle is a crank of which the front end is provided with a gear tooth engaged with the notch, the back end of the straight handle is longer than the crank and is provided with an impact plug, and a locking device is installed between the two forceps handles. The utility model has the advantages of simple structure, convenient operation and use and stable and reliable clamping, and an operation can be completed by one-man operation.

Description

Jaw type percussopunctator extractor

This utility model relates to the technical field of medical instruments that is used for the synthetism operation.

The percussopunctator extractor that uses clinically mostly is drag hook impacting type structure greatly at present, often can not successfully drag hook be inserted in the side opening of percussopunctator during use, and phenomenons such as hook, hook straightening can occur breaking off relations, breaking, influences carrying out smoothly of operation.And operation mostly is two people operation, wastes time and energy.The patent No. be ZL98220333's " screw press latched type percussopunctator extractor " on mechanics principle, traditional bump pulled out and changes screw press into and pull out, though tension uniform is mild, but its complex structure, withstand on epiphysis pulling out pin process middle sleeve front end, increase the weight of the damage of soft tissue, and had unhandy defective equally.

The purpose of this utility model is to provide a kind of use convenient, reliable, and percussopunctator extractor simple in structure.

For achieving the above object, this utility model adopts clamp type structure, and promptly it has the caliper that is made of two hinged pincers handles of front portion.Wherein a pincers handle is the straight staight shanks in front and back, and the front end shape of this pincers handle is consistent with the percussopunctator cavity shape, and has a breach in the inboard.Another pincers handle is the crank that has bending, its front end have with staight shank on the breach teeth of interlock mutually.The length of staight shank is greater than the length of crank, and its rear portion is fixed with the bump bolt, between two pincers handles locking device is installed.

Because staight shank front end shape of the present utility model is consistent with the percussopunctator inner chamber, thereby can be inserted into percussopunctator afterbody to be extracted at an easy rate when using, make that breach aligns with percussopunctator afterbody side opening on it, and make crank front end teeth pass percussopunctator side opening and breach interlock, lock locking device then, can successfully percussopunctator be extracted with the bump bolt on the enlarging hammer bump staight shank.As seen, this utility model is easy to use, and one man operation can be finished operation.Clamping is solid and reliable, and anti-impact force is strong, can not occur snaggletooth, unhook phenomenon in the use, has guaranteed carrying out smoothly of operation.And simple in structure, little to patient trauma.

Fig. 1 is a front view of the present utility model, shows its overall structure;

Fig. 2 is the vertical view of figure one.

In in the enforcement shown in the accompanying drawing, this utility model is made by stainless steel material, and its overall structure form is pincerlike, and the two pincers handles hinged by the front portion constitute caliper.Wherein a pincers handle is the straight staight shanks in front and back (1), and the front end shape of this staight shank (1) is consistent with the percussopunctator cavity shape, and has a breach in the inboard, and when it was inserted into the percussopunctator afterbody, this breach was just in time corresponding with side opening on the percussopunctator.Another pincers handle is the crank (2) that has bending, its front end have with staight shank (1) on breach teeth of interlock (3) mutually.The length of staight shank (1) is greater than the length of crank (2), and its rear portion is fixed with bump bolt (5).Bump bolt (5) both can be fixed on staight shank (1) inboard, also can certainly, also the rear end of staight shank (1) can be bent to substitute bump bolt (5) in its outside.Between two pincers handles locking device (4) is installed, this device (4) is hinged on staight shank (1) by the lower end and goes up and pass the screw rod and the nut formation that is contained on the screw rod that crank (2) is gone up elongated hole.After two pincers handle front ends clamped the percussopunctator afterbody, fastening nut can not throw off it two pincers handle front end lockings in pulling out the pin process.

Claims

1, a kind of jaw type percussopunctator extractor, has the caliper that constitutes by two hinged pincers handles of front portion, it is characterized in that: wherein a pincers handle is the straight staight shanks in front and back (1), and the front end shape of this staight shank (1) is consistent with the percussopunctator cavity shape, and has a breach in the inboard; Another pincers handle is the crank (2) that has bending, its front end have with staight shank (1) on breach teeth of interlock (3) mutually; The length of staight shank (1) is greater than the length of crank (2), and its rear portion is fixed with bump bolt (5); Between two pincers handles locking device (4) is installed.

2, jaw type percussopunctator extractor according to claim 1 is characterized in that said locking device (4) is hinged on staight shank (1) by the lower end and goes up and pass the screw rod and the nut formation that is contained on the screw rod that crank (2) is gone up long property hole.