CN203943734U

CN203943734U - Lumbar vertebral posterior angle is held rod pincers

Info

Publication number: CN203943734U
Application number: CN201420227778.1U
Authority: CN
Inventors: 任先军; 蒋涛; 阴洪
Original assignee: Second Affiliated Hospital of TMMU
Current assignee: Second Affiliated Hospital of TMMU
Priority date: 2014-05-06
Filing date: 2014-05-06
Publication date: 2014-11-19
Anticipated expiration: 2024-05-06

Abstract

The utility model discloses a kind of lumbar vertebral posterior angle and hold rod pincers, belong to technical field of medical instruments, for solving, lumbar vertebral posterior pedicle screw internal fixation is existing to be held excellent clamp and holds unstable the affect implantation of pedicle screw and fixing problem.It comprises the clamp handle that is hinged and is formed by upper plier handle and lower plier handle, the head of described lower plier handle connects upper grip head, the head of described upper plier handle connects lower pliers head, described upper plier handle afterbody is provided with sealed ratch, described lower plier handle is provided with the sealed hook coordinating with described sealed ratch, the front end inner surface of described upper grip head and lower pliers head is provided with symmetrical upper and lower circular groove, and described upper grip head and lower pliers head form the large truncated rectangular pyramids structure in the little rear end of front end when closed, upper and lower circular groove forms clamping hole.This is held rod pincers front end and takes up room littlely, has angle of inclination, side, more easily clamps pedicle screw and enters operative incision and fix, interior fixing more practical for lumbar vertebra short segment.

Description

Lumbar vertebral posterior angle is held rod pincers

Technical field

This utility model belongs to technical field of medical instruments, specifically, is that a kind of angle being applicable in lumbar vertebral posterior pedicle screw internal fixation is held rod pincers.

Background technology

Lumbar degenerative disease is a kind of common disease, and lumbar vertebra fracture dislocation is a kind of common wound.Lumbar vertebral posterior pedicle screw internal fixation is one of main modus operandi for the treatment of lumbar degenerative disease and lumbar vertebra fracture dislocation.

Along with precision and the Wicresoft of operation, especially, for the short segment operation of two adjacent spinal vertebrals, range of operation is Wicresoft more, for operating theater instruments, has higher requirement.With regard to current lumbar vertebral posterior is held rod pincers, all exist and clamp the shortcomings such as unstable, excessive, heavy.Patent No. publication number is: 2011.06.27) disclose a kind of " holding rod pincers ", comprise the clamp handle being formed by upper plier handle and lower plier handle and the binding clip being formed by upper grip head and lower pliers head, head and the upper grip head of lower plier handle are fixedly linked, head and the lower pliers head of upper plier handle are fixedly linked, sealed tooth on being provided with on upper plier handle, on lower plier handle, be provided with described the lower sealed tooth that matches of sealed tooth, the inner surface of upper grip head and lower pliers head is provided with the upper and lower groove of symmetrical circular arc for clamping the implants such as Ha Shi rod or Roche rod.This hold rod pincers upper by the upper and lower groove of circular arc, is formed wear excellent hole front-end architecture design unreasonable, make to hold excellent clamp head part and be not easy to enter income otch in the process of clamping titanium rod, the operation technique such as affect the implantation of both sides pedicle screw end to end and fix.

Summary of the invention

For the excellent clamp head part of holding existing in prior art, design unreasonable impact implantation and the fixing problem that waits operation technique of both sides pedicle screw end to end, this utility model provide a kind of reasonable in design, clamping is firm, the convenient fixedly lumbar vertebral posterior angle of both sides pedicle screw is held excellent pincers.

For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is as follows:

A kind of lumbar vertebral posterior angle is held rod pincers, comprise the clamp handle that is hinged and forms by upper plier handle and lower plier handle, the head of described lower plier handle connects upper grip head, the head of described upper plier handle connects lower pliers head, described upper plier handle afterbody is provided with sealed ratch, described lower plier handle is provided with the sealed hook coordinating with described sealed ratch, the front end inner surface of described upper grip head and lower pliers head is provided with symmetrical upper and lower circular groove, and described upper grip head and lower pliers head form the large truncated rectangular pyramids structure in the little rear end of front end when closed, upper and lower circular groove forms clamping hole.

Adopt the utility model of technique scheme, the clamping hole forming due to upper and lower circular groove is positioned at holds rod pincers front end, and forming the large truncated rectangular pyramids structure in the little rear end of front end during the closed clamping of upper grip head and lower pliers head, this makes to hold the excellent pincers rod that can be easy to be clamped and connected and enters operative incision and be fixed.

Furthermore, described upper and lower circular groove inner surface is equipped with longitudinal serration of coupling.Limit the coefficient of friction that longitudinal serration can increase clamping hole inner surface, improved the chucking power of holding rod pincers.

This utility model compared to existing technology, there is following beneficial effect: the truncated rectangular pyramids structure of holding excellent clamp headend has certain angle of inclination, can avoid holding rod pincers front end to both sides pedicle screw stopping fixedly time, add clamping hole and be positioned at foremost, this is interior fixing more practical for lumbar vertebra short segment; Hold excellent clamp headend structure less, during clamping, more easily enter operative incision, take up room little, do not affect subsequent operation; Longitudinally serration has strengthened the clamping effect of holding rod pincers, the problem that occurs that because clamping shakiness pitman rotates in the time of can preventing from installing.

Accompanying drawing explanation

Fig. 1 is perspective view of the present utility model;

Fig. 2 is upward view of the present utility model;

Fig. 3 is A portion enlarged drawing in Fig. 2;

Fig. 4 is rearview of the present utility model.

The specific embodiment

In order to make those skilled in the art understand better this utility model, below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated.

As shown in Figure 1, a kind of lumbar vertebral posterior angle is held rod pincers, comprise the clamp handle that is hinged and forms by upper plier handle 1 and lower plier handle 2, the head of described lower plier handle 2 connects upper grip head 3, the head of described upper plier handle 1 connects lower pliers head 4, described upper plier handle 1 afterbody is provided with sealed ratch 5, and described lower plier handle 2 is provided with the sealed hook 6 coordinating with described sealed ratch 5.

Shown in Figure 2, the front end inner surface of described upper grip head and 3 lower pliers heads 4 is provided with being much of circular groove 31 and lower circular groove 41, when upper grip head 3 and lower pliers head 4 closure, upper circular groove 31 and lower circular groove 41 form a clamping hole 7 that can clamp barred body implant (such as pitman), the size of clamping hole 7 can the different latched position on sealed ratch 5 regulate by sealed hook 6, to coordinate the pitman of different model.

Respectively referring to shown in Fig. 2 and Fig. 3, hold excellent icarceration while closing, upper grip head 3 and lower pliers head 4 can form a truncated rectangular pyramids structure that the little rear end of front end is large, this makes to hold rod pincers front end and takes up room little, the rod that is more easily clamped and connected enters operative incision and is fixed, and can fixedly not cause interference to both sides pedicle screw.

As shown in Figure 2, the inner surface of upper circular groove 31 and lower circular groove 41 is provided with longitudinal serration 32,42, in order to increase the coefficient of friction of clamping hole inner surface, improves chucking power.

The lumbar vertebral posterior above this utility model being provided is held rod pincers and is described in detail.The explanation of specific embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of this utility model principle, can also carry out some improvement and modification to this utility model, these improvement and modification also fall in the protection domain of this utility model claim.

Claims

1. a lumbar vertebral posterior angle is held rod pincers, comprise the clamp handle that is hinged and forms by upper plier handle (1) and lower plier handle (2), the head of described lower plier handle (2) connects upper grip head (3), the head of described upper plier handle (1) connects lower pliers head (4), described upper plier handle (1) afterbody is provided with sealed ratch (5), described lower plier handle (2) is provided with the sealed hook (6) coordinating with described sealed ratch (5), it is characterized in that, the front end inner surface of described upper grip head (3) and lower pliers head (4) is provided with being much of, lower circular groove (31, 41), and described upper grip head (3) and lower pliers head (4) form the large truncated rectangular pyramids structure in the little rear end of front end when closed, on, lower circular groove (31, 41) form clamping hole (7).

2. lumbar vertebral posterior angle according to claim 1 is held rod pincers, it is characterized in that, described upper and lower circular groove (31,41) inner surface is equipped with longitudinal serration (32,42) of coupling.