CN202619730U

CN202619730U - Double-tooth laminectomy retractor

Info

Publication number: CN202619730U
Application number: CN 201220236993
Authority: CN
Inventors: 赵怀志; 郭云涛; 王海峰; 段元涛
Original assignee: LAIWU IRON AND STEEL GROUP CO Ltd HOSPITAL
Current assignee: LAIWU IRON AND STEEL GROUP CO Ltd HOSPITAL
Priority date: 2012-05-24
Filing date: 2012-05-24
Publication date: 2012-12-26
Anticipated expiration: 2022-05-24

Abstract

The utility model belongs to medical instruments and particularly relates to a laminectomy retractor which comprises a handle 5, a rear shank 1, a front shank 2, two retractor teeth 3 and tooth tops 4. The upper end of the rear shank 1 is fixedly connected with the rear end of the front shank 2, the handle 5 is fixedly arranged at the lower end of the rear shank 1, the retractor teeth 3 are arranged at the front end of the front shank 2, and the tooth tops 4 are arranged at the front ends of the retractor teeth 3. The laminectomy retractor is characterized in that the two retractor teeth 3 are mutually symmetrical. Compared with a currently used laminectomy retractor, the laminectomy retractor has the advantages that by the aid of the double-tooth structure, two sides of the transverse process can be exposed simultaneously, implantation of screws is facilitated, the laminectomy retractor is more convenient to use, success rate of surgeries is increased, and working strength of doctors is reduced.

Description

The bidentate laminectomy retractor

Technical field

This utility model belongs to medical apparatus and instruments, specifically a kind of laminectomy retractor.

Background technology

Posterior spinal operation is the important approach mode of spinal diseases such as treatment spinal fracture, spondylolishesis; Wherein appearing of articular process, transverse process goes into to follow closely point most important for the location pedicle of vertebral arch; Because this position is dissected complicated, particularly under the situation of paraspinal muscle anxiety, appear difficulty; Need to use the assosting effect of laminectomy retractor, so that fully expose surgical field of view.Traditional laminectomy retractor is made up of handle, back handle, pull end, briar tooth, crown, and back handle is connected with the pull end vertical fixing, and the lower end of back handle is provided with fixed handle; The front end of pull end is provided with a fixedly briar tooth, and the front end of briar tooth is a crown, and its weak point is: owing to have only a tooth; Can only stop the soft tissue in the last of pedicle of vertebral arch or the inferior thyroid notch outside, can not completely appear, appear transverse process one side often into the nail point; And the opposite side soft tissue still covers; If place drag hook simultaneously in the transverse process both sides, then the edge of a knife can't hold, and cooperation is difficult to coordinate; And the pull end of traditional drag hook is a flat shape, and the working place is narrow and small when pedicle of vertebral arch punching, screw-in screw, often causes putting the nail deviation of directivity.

Summary of the invention

It is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, and can appear the transverse process both sides simultaneously, is convenient to the bidentate laminectomy retractor that screw is inserted.

In order to realize above purpose; The technical scheme that this utility model adopted is: it comprises handle, back handle, pull end, briar tooth and crown, and the upper end of back handle is fixedly connected with the rear end of pull end, and the lower end of back handle is provided with fixed handle; The front end of pull end has briar tooth; The front end of briar tooth is a crown, and its technical essential is: the briar tooth of pull end front end is two, and symmetrically.

This utility model is compared with the laminectomy retractor of present use, owing to adopt the bidentate structure, can appear the transverse process both sides simultaneously, is convenient to screw and inserts, and uses conveniently, has improved the success rate of performing the operation, and has reduced doctor's working strength.

Description of drawings

Fig. 1 is the structure principle chart of this utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1.

Among the figure: 1, back handle; 2, pull end; 3, briar tooth; 4, crown; 5, handle.

The specific embodiment

With reference to accompanying drawing 1, Fig. 2, Fig. 3 this utility model is at length explained.This utility model includes handle 5, back handle 1, pull end 2, briar tooth 3 and crown 4, and the upper end of back handle 1 is fixedly connected with the rear end of pull end 2, and the lower end of back handle 1 is fixed with handle 5, and the front end of pull end 2 has briar tooth 3, and briar tooth 3 is individual for connecting, and symmetrically.The front end of briar tooth 3 is a crown 4.

For the ease of pedicle of vertebral arch punching with screw in screw, increase the working place, be arc with the transverse section of pull end 2, promptly the upper surface middle part of pull end 2 is provided with axial arc groove, and the front end of arc groove is corresponding with the gap between two briar tooths 3.

During use, two briar tooths 3 are stuck in the outer rim of contiguous upper and lower zygapophysial joints respectively, the gap between two briar tooths 3 is across transverse process; The drag hook flare has then appeared the last lower edge of transverse process and the outside of entry point simultaneously, is about to complete the keeping apart of entry point surrounding soft tissue; Because the pull end 2 of drag hook is the arc design, little to pedicle of vertebral arch punching and the influence of screw-in screw, the working place is big; More convenient operation can significantly reduce and put the nail deviation freely.

Claims

1. bidentate laminectomy retractor; It includes handle (5), back handle (1), pull end (2), briar tooth (3) and crown (4), and the upper end of back handle (1) is fixedly connected with the rear end of pull end (2), and the lower end of back handle (1) is fixed with handle (5); The front end of pull end (2) has briar tooth (3); The front end of briar tooth (3) is crown (4), it is characterized in that: briar tooth (3) is individual for connecting, and symmetrically.

2. bidentate laminectomy retractor according to claim 1 is characterized in that: the upper surface middle part of pull end (2) is provided with axial arc groove, and the front end of arc groove is corresponding with the gap between two briar tooths (3).