CN203182990U

CN203182990U - Nucleus pulposus shears

Info

Publication number: CN203182990U
Application number: CN 201320178959
Authority: CN
Inventors: 杨鹏飞; 郭林; 杨柳; 古凌川
Original assignee: First Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; First Affiliated Hospital of TMMU
Priority date: 2013-04-11
Filing date: 2013-04-11
Publication date: 2013-09-11
Anticipated expiration: 2023-04-11

Abstract

The utility model discloses a pair of nucleus pulposus shears. The pair of nucleus pulposus shears comprises a nucleus pulposus clamp mechanism, wherein two clamps of the nucleus pulposus clamp mechanism are two corresponding shear pieces (6). The pair of nucleus pulposus shears has the remarkable advantages of being simple in structure, reasonable in design and capable of removing a joint capsule in front of the pair of nucleus pulposus shears in minimally invasive surgery conveniently, completing loosening of an outside supporting band and the like, the pair of nucleus pulposus shears not only is convenient to use, but also can avoid damages to an important structure in front of the joint capsule, and the success rate of the surgery is improved.

Description

Vertebral pulp is cut

Technical field

This utility model relates to a kind of medical apparatus and instruments, is specifically related to a kind of vertebral pulp and cuts.

Background technology

In Minimally Invasive Surgerys such as elbow joint videoendoscopic surgery, laparoscopic surgery, need to cut off the place ahead joint capsule, but general planing tool excision the place ahead joint capsule is wasted time and energy, in addition, narrow and small because of the joint lacuna, cut off the place ahead joint capsule as if the common shears of use, be difficult to open shear shank in the art, and because the place ahead joint capsule is close to elbow joint the place ahead nervus vasculairs, in case the damage consequence is serious, one side tool point is easy to damage joint capsule the place ahead important structure when being positioned over joint capsule both sides, the place ahead after shears opens in the art.

The shortcoming of prior art is: be not specifically designed to the medical apparatus and instruments of excision joint capsule, waste time and energy when excising joint capsule in Minimally Invasive Surgerys such as elbow joint videoendoscopic surgery, also possible injured blood vessel nerve has serious consequences, and makes troubles to operation.

The utility model content

The purpose of this utility model provides a kind of vertebral pulp and cuts, be convenient in Minimally Invasive Surgery excision the place ahead joint capsule, finish that outside retinaculum is loosened etc.

For achieving the above object, this utility model is explained a kind of vertebral pulp and cut, and comprises the vertebral pulp jaw mechanism, and its key is: two clamps of described vertebral pulp jaw mechanism are corresponding two snips (6).

Described snip (6) is made up of top shear blade (6a) and following snip (6b), described vertebral pulp jaw mechanism comprises fixed handle (1), flexible handle (2), last pincers pipes (3) and following pincers pipes (4), described upward pincers pipes (3) and following pincers are managed (4) and are be arranged in parallel, described fixed handle (1) is fixed on the described pipe of pincers down (4) rear end, described flexible handle (2) is hinged on described pincers pipe (3) rear end of going up, inboard and the inboard return shell fragment (5) that mutual correspondence is fixedly arranged of flexible handle (2) at described fixed handle (1), two described return shell fragments (5) push against mutually; Described snip (6b) down is fixed on described (4) front end of pincers pipe down, described top shear blade (6a) is hinged on the described snip (6b) down, described pincers pipe (3) front end of going up has U-shaped mounting groove (7), described top shear blade (6a) is connected described pincers pipe (3) front end of going up through bearing pin (9), have sliding tray (8) at described top shear blade (6a), described bearing pin (9) passes described sliding tray (8), slides relatively in this sliding tray (8).

Two clamps of vertebral pulp jaw mechanism are transformed to two snips, can in Minimally Invasive Surgerys such as elbow joint videoendoscopic surgery, laparoscopic surgery, excise the place ahead joint capsule very easily, or finish that outside retinaculum is loosened etc., make that operation is more convenient.

Described upward pincers pipe and following pincers pipe be arranged in parallel, rear end at the pincers pipe is provided with downward projection, the rear end of infra pincers pipe is provided with projection upwards, projection upwards and downward projection cooperatively interact, the space is reserved in rear end at pincers pipe and following pincers pipe, when using this vertebral pulp to cut, the handle of holding with a firm grip, compression return shell fragment, make the flexible handle drive go up the pincers pipe and in this space, move forward that mobile going up clamps pipe racks untie-sell axle and upwards slide, and promotes top shear blade and moves down in sliding tray, cooperatively interact with following snip, realize the excision function that this vertebral pulp is cut, unclamp flexible handle after operation is finished, because of the effect of return shell fragment, make the flexible handle return, pincers pipes return in the drive, backward return go up pincers pipe racks untie-sell axle in sliding tray to lower slider, make top shear blade open-shaped attitude again, by such setting, can be so that the use that this vertebral pulp is cut be convenient.

Described snip (6b) down, following pincers pipes (4) and fixed handle (1) are one-body molded.

Be convenient to like this make, reduced manufacturing procedure, saved rapidoprint, reduced production cost.

Remarkable result of the present utility model is: simple in structure, reasonable in design, be convenient in Minimally Invasive Surgery excision the place ahead joint capsule, finish that outside retinaculum is loosened etc., not only easy to use, and can avoid damaging joint capsule the place ahead important structure, improve the success rate of operation.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the installation graph of a relation of top shear blade 6a and following snip 6b;

Fig. 3 is the installation graph of a relation of last pincers pipe 3 and top shear blade 6a.

The specific embodiment

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of vertebral pulp is cut, comprise fixed handle 1, flexible handle 2, last pincers pipe 3 and following pincers pipe 4, the described pincers pipe 3 of going up be arranged in parallel with following pincers pipe 4, be provided with downward projection in pincers pipe 3 rear ends, the rear end of infra pincers pipe 4 is provided with projection upwards, downward projection and the projection that makes progress cooperatively interact, the space is reserved in rear end at pincers pipe 3 and following pincers pipe 4, make that going up pincers pipe 3 can slide on the infra pincers pipe 4 relatively, described fixed handle 1 is fixed on the described pipe of pincers down 4 rear ends, and described flexible handle 2 is hinged on described pincers pipe 3 rear ends of going up, and drives pincers pipe 3 by the flexible handle 2 of holding with a firm grip and slides relatively.

Fixedly there are 5, two described return shell fragments 5 of return shell fragment of mutual correspondence to push against mutually in described fixed handle 1 inboard and flexible handle 2 inboards, by the effect of return shell fragment 5, make fixed handle 1 and flexible handle 2 unclamp the back self-return.

At the described pipe of pincers down 4 front ends following snip 6b is arranged fixedly, described pincers pipe 3 front ends of going up have U-shaped mounting groove 7, and described top shear blade 6a is connected described pincers pipe 3 front ends of going up through bearing pin 9, has sliding tray 8 at described top shear blade 6a, described bearing pin 9 passes described sliding tray 8, slides relatively in this sliding tray 8.

Described snip 6b down, following pincers pipe 4 and fixed handle 1 are one-body molded.

Claims

1. a vertebral pulp is cut, comprise the vertebral pulp jaw mechanism, it is characterized in that: two clamps of described vertebral pulp jaw mechanism are corresponding two snips (6), described snip (6) is made up of top shear blade (6a) and following snip (6b), described vertebral pulp jaw mechanism comprises fixed handle (1), flexible handle (2), last pincers pipes (3) and following pincers pipes (4), described upward pincers pipes (3) and following pincers are managed (4) and are be arranged in parallel, described fixed handle (1) is fixed on the described pipe of pincers down (4) rear end, described flexible handle (2) is hinged on described pincers pipe (3) rear end of going up, inboard and the inboard return shell fragment (5) that mutual correspondence is fixedly arranged of flexible handle (2) at described fixed handle (1), two described return shell fragments (5) push against mutually;

Described snip (6b) down is fixed on described (4) front end of pincers pipe down, described top shear blade (6a) is hinged on the described snip (6b) down, described pincers pipe (3) front end of going up has U-shaped mounting groove (7), described top shear blade (6a) is connected described pincers pipe (3) front end of going up through bearing pin (9), have sliding tray (8) at described top shear blade (6a), described bearing pin (9) passes described sliding tray (8), slides relatively in this sliding tray (8).

2. cut according to the described vertebral pulp of claim 1, it is characterized in that: described snip (6b) down, following pincers pipes (4) and fixed handle (1) are one-body molded.