CN205163172U

CN205163172U - Pedicle of vertebral arch is reaming awl step by step

Info

Publication number: CN205163172U
Application number: CN201520973850.XU
Authority: CN
Inventors: 谢小平; 孙广运
Original assignee: Second Peoples Hospital of Yibin
Current assignee: Second Peoples Hospital of Yibin
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2016-04-20
Anticipated expiration: 2025-11-30

Abstract

Pedicle of vertebral arch is reaming awl step by step, including handle part of a plurality of awl pole subtotals, awl pole part is the rhabodoid, every awl pole part front end is the conical head, the conical head is the rectangular cylinder, the cylinder edges and corners are sharp keen, conical head front end owner regards as sharp -pointed form, overlook to blunt circular, the conical head rear end links firmly with the body of rod, the body of rod is the rectangular cylinder, the cross -section is greater than the conical head, the body of rod forms the dark round platform of limit with the junction of conical head rear end, there is the scrobicular ring body of rod tail end side, the handle part is including the handle, it has linked firmly the support to be 90 degrees with the handle, the support is the cylinder, the support front end has the rectangle deep hole, the specification and the body of rod of rectangle deep hole match, there is the lockpin bottom the rectangle deep hole, spring and sliding sleeve be equipped with at the support overcoat, the sliding sleeve tail end has the pull ring, the pulling pull ring, can lock the lockpin, the pole conical head of a plurality of awl pole parts is by thin to thick, length progressively scales up, implement the utility model discloses, can make shi shuzhe progressively increase the aperture and the degree of depth in drilling process, misoperation is avoided to the grasp dynamics of being convenient for, and the convenience is changed to the awl pole part of each specification.

Description

Pedicle of vertebral arch is rose bit step by step

Technical field

This utility model relates to medical apparatus and instruments, mainly sets up a kind of pedicle of vertebral arch rose bit step by step of pedicle screw tunnel punching in cervical vertebra surgical operation.

Background technology

At present fixedly remain one of methods of internal fixation that cervical vertebra surgery often selects through Pedicle Screw Placement in Lower Cervical, pedicle screw is fixing must set up screw tunnel, the instrument setting up pedicle screw tunnel is Kirschner wire, drill bit, curet substantially, due to the construction features of these instruments self, the screw tunnel of cutting passes pedicle of vertebral arch inside and outside wall or upper lower wall sometimes thus causes screw to be partial to and causes spinal nerves or vertebral artery injuries.For improving accuracy and the safety of putting nail, according to the anatomical features of pedicle for cervical vertebra arch and the mechanics principle of tunneling, design this special rose bit step by step with reduce as much as possible screw tunnel wear out pedicle of vertebral arch bone wall incidence rate, improve and put accuracy and the safety of nail.

Utility model content

The purpose of this utility model is to provide pedicle of vertebral arch rose bit step by step, adopts the mode of reaming step by step, to make up the deficiencies in the prior art.

The purpose of this utility model is achieved in that pedicle of vertebral arch rose bit step by step, comprise multiple cone bar part and a handle portion, cone bar part is rhabodoid, each cone bar part front end is conehead, conehead is rectangular cylinder, cylinder corner angle are sharp keen, conehead front end is main is considered as tip shape, overlook as blunt rounded, conehead rear end and the body of rod are connected, the body of rod is rectangular cylinder, cross section is greater than conehead, the junction of the body of rod and conehead rear end forms depth stop round platform, there is scrobicular ring body of rod tail end side, handle portion comprises handle, be 90 degree with handle and be fixed with bearing, bearing is cylinder, there is rectangle deep hole bearing front end, the specification of rectangle deep hole is mated with the body of rod, lock pin is had at rectangle deep hole bottom, lock pin can stretch out and regain in rectangle deep hole, spring and sliding sleeve is set with outside bearing, sliding sleeve tail end has draw ring, pull draw ring, lock pin can be locked, the body of rod specification of multiple cone bar part is identical, conehead progressively increases progressively from fine to coarse, conehead length progressively increases progressively.

By implementing this utility model, can make to execute patient progressively increases aperture and the degree of depth in boring procedure, is convenient to grasp dynamics, avoids operate miss, and the cone bar part of each specification is changed conveniently.

This utility model is described further by detailed description of the invention below in conjunction with accompanying drawing.

Accompanying drawing explanation

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

Fig. 2 is the top view of conehead.

In figure, 1 is conehead, and 2 is depth stop round platforms, and 3 is bodies of rod, and 4 is scrobicular rings, and 5 is rectangle deep holes, and 6 is springs, and 7 is sliding sleeves, and 8 is lock pins, and 9 is draw rings, and 10 is handles.

Detailed description of the invention

Pedicle of vertebral arch is rose bit step by step, comprise three cone bar parts and a handle portion, cone bar part is rhabodoid, each cone bar part front end is conehead 1, conehead 1 is rectangular cylinder, cylinder corner angle are sharp keen, conehead 1 front end is main is considered as tip shape, overlook as blunt rounded, conehead 1 rear end and the body of rod 3 are connected, the body of rod 3 is rectangular cylinder, cross section is greater than conehead 1, the body of rod 3 forms depth stop round platform 2 with the junction of conehead 1 rear end, there is scrobicular ring 4 body of rod 3 tail end side, handle portion comprises handle 10, bearing is fixed with in 90 degree with handle 10, bearing is cylinder, there is rectangle deep hole 5 bearing front end, the specification of rectangle deep hole 5 is mated with the body of rod 3, lock pin 8 is had bottom rectangle deep hole 5, lock pin 8 can stretch out and regain in rectangle deep hole 5, spring 6 and sliding sleeve 7 is set with outside bearing, sliding sleeve 7 tail end has draw ring 9, pull draw ring 9, lock pin 8 can be locked, the body of rod 3 specification of three cone bar parts is identical, 1.8 millimeters, first order conehead 1 width front end, 2.0 millimeters, rear end, 1.2 millimeters, thickness front end, 1.5 millimeters, rear end, length 15 millimeters, 1.9 millimeters, second level conehead 1 width front end, 2.2 millimeters, rear end, 1.4 millimeters, thickness front end, 1.7 millimeters, rear end, length 20 millimeters, 2.1 millimeters, third level conehead 1 width front end, 2.6 millimeters, rear end, 1.6 millimeters, thickness front end, 2.0 millimeters, rear end, length 25 millimeters.

During use, the body of rod 3 of the first order being bored bar part inserts rectangle deep hole 5, lock pin 8 enters scrobicular ring 4, first order cone bar part and handle portion are connected as a single entity, hold handle 10 and first order conehead 1 is aimed at the position needing boring, top is pressed and rotates, stop when depth stop round platform 2 contacts with superior articular process of cervical vertebra cortex, bone gets out diameter 2.0 millimeters, the hole that the degree of depth is 15 millimeters, pull draw ring 9 with forefinger thumb, move after driving sliding sleeve 7, locked lock pin 8, draws handle 10 outward, and lock pin 8 takes first order cone bar part out of by scrobicular ring 4; Change second level cone bar part in the same mode and in same position repetitive operation, expand and expand gun drilling; Change third level cone bar part in the same mode again and in same position repetitive operation, complete final boring.

Claims

1. pedicle of vertebral arch rose bit step by step, it is characterized in that: comprise multiple cone bar part and a handle portion, cone bar part is rhabodoid, each cone bar part front end is conehead (1), conehead (1) is rectangular cylinder, cylinder corner angle are sharp keen, conehead (1) front end is main is considered as tip shape, overlook as blunt rounded, conehead (1) rear end and the body of rod (3) are connected, the body of rod (3) is rectangular cylinder, cross section is greater than conehead (1), the body of rod (3) forms depth stop round platform (2) with the junction of conehead (1) rear end, there is scrobicular ring (4) body of rod (3) tail end side, handle portion comprises handle (10), bearing is fixed with in 90 degree with handle (10), bearing is cylinder, there is rectangle deep hole (5) bearing front end, the specification of rectangle deep hole (5) is mated with the body of rod (3), lock pin (8) is had in rectangle deep hole (5) bottom, lock pin (8) can stretch out and regain in rectangle deep hole (5), spring (6) and sliding sleeve (7) is set with outside bearing, sliding sleeve (7) tail end has draw ring (9), pull draw ring (9), lock pin (8) can be locked, the body of rod (3) specification of multiple cone bar part is identical, conehead (1) progressively increases progressively from fine to coarse, conehead (1) length progressively increases progressively.