CN2518470Y

CN2518470Y - Internzl fixation device for spine fracture

Info

Publication number: CN2518470Y
Application number: CN 01232171
Authority: CN
Inventors: 史亚民; 胡志勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-25
Filing date: 2001-07-25
Publication date: 2002-10-30
Anticipated expiration: 2011-07-25

Abstract

The utility model relates to an internal fixation device for spine fracture, and comprises a connection bar1, fixing nails 5, an elastic clamp 11, a nut 9 and a gasket 10. The elastic clamp 11 is clamped on the connection bar1, and the fixing nails 5 are through in the elastic clamp 11. Two ends of the connection bar1 are respectively provided with obverse and inverse screws. Turning the connection bar1 can exactly adjust the distance of two fixing nails 5. The elastic clamp 11 fixes the fixing nails 5 and the connection bar 1, and the angle between the fixing nails 5 and the connection bar can be adjusted through the special structure on the middle of the elastic clamp and the gasket 10, as well as the nut 9. The utility model can be used in the spine fracture and spine reshaping operations.

Description

The spinal fracture inner fixing device

Technical field

This utility model relates to a kind of orthopedics (orthopaedics) and uses medical treatment device, especially a kind of spinal fracture inner fixing device.

Background technology

Utility model patent ZL99217498.8 discloses the Rachiocampis correction inner fixer, provide a kind of both to spinal column axis to the effect of strutting, device that can be corrigent again to the scoliosis lateral traction, this patent is by strengthening the distance between each screw on vertical pitman, thereby produces the power that vertically struts; By shortening pedicle screw and the vertical distance between the pitman on the horizontal pitman, thereby produce horizontal drag force.Normally utilize and strut that pincers finish and strut distance between catch ring and the screw, therefore, to strutting the assurance of distance, need the doctor to have and enrich sturdy practical experience and clinical technology, there is very big difficulty in this for the general doctor.

Utility model patent ZL99217497.X discloses a kind of lumbar spondylolisthesis inner fixer that resets, and this patent is by the skewed slot design of supporting screw opening end inside, make its with pitman between axially be connected at an angle.Yet the adjusting of this angle is subjected to certain limit.

Summary of the invention

The purpose of this utility model provide a kind of axial adjustment accurately, spinal fracture inner fixing device screw and pitman adjustable angle, more flexible, more practical, more convenient operation.

The purpose of this utility model is achieved in that

Positive left-hand thread has been designed at the two ends of the pitman between 1 two staples respectively, by the rod that is rotationally connected, and the distance of utilizing the right-and-left threaded pitch on the pitman to regulate two staples.

Fix by elasticity folder between 2 staples and the pitman, and the angle of staple and pitman is regulated by the special construction in the middle part of the elasticity folder and pad and nut.

Backbone correcting internal fixation adjusting device, it comprises parts such as pitman, staple, elasticity folder, nut, pad, and elasticity is clipped on the pitman, and staple is through in the elasticity folder.

Described pitman two ends are respectively left-hand thread section and plus thread section, and mid portion is for regulating rib.

Described elasticity folder divides elasticity folder root segment, elasticity folder to go up page or leaf and elasticity folder nextpage three parts, and elasticity folder root segment links to each other with pitman.Wherein, the plus thread section and the left-hand thread section diameter of elasticity folder root segment interstitial hole and pitman match, and design has positive and negative female thread.

Page or leaf gone up by described elasticity folder and elasticity folder nextpage is designed to hollow structure.

The outside that described elasticity folder is gone up page or leaf and nextpage all is designed to spheroid.

Described elasticity folder is gone up the page or leaf middle part and is designed to the conical surface, and elasticity folder nextpage middle part is designed to concave surface.

Described staple the first half is a spiro rod section, and the middle part is the sphere section, and the bottom is the screw section.

Described screw section can be screw or camber hook or spade hook.

Described spiro rod section diameter presss from both sides nextpage less than elasticity and elasticity is pressed from both sides the interstitial hole diameter of going up page or leaf, and sphere section diameter presss from both sides a upward page or leaf interstitial hole diameter greater than elasticity folder nextpage and elasticity.

Described pad bottom is a concave surface.

Advantage of the present utility model is: the adjusting of distance is to finish by the screw thread on the pitman between the screw, therefore can accurately grasp.The special construction at elasticity folder middle part and the design of pad and nut can be finished the adjusting of angle as required.

Description of drawings

Fig. 1, this utility model clinical practice sketch map;

Fig. 2, this utility model schematic side view;

Fig. 3, this utility model elasticity folder, screw, gasket construction cutaway view;

Several sketch maps of Fig. 4, this utility model elasticity folder central structure.

Among the figure:

1-pitman, 2-left-hand thread section 3-adjusting rib 4-plus thread section

5-staple, 6-spiro rod section, 7-sphere section, 8-screw section

9-nut, 10-pad, 11-elasticity folder

12-elasticity folder root segment, 13-elasticity folder female thread

14-elasticity folder is gone up page or leaf 15-conical surface

16-elasticity folder nextpage, 17-concave surface

The specific embodiment

A kind of embodiment of the present utility model, it mainly comprises: parts such as pitman 1, staple 5, nut 9, pad 10, elasticity folder 11, see Fig. 1.Elasticity folder 11 is clipped on the pitman 1, and staple 5 passes in the elasticity folder 11, and is fixing by pad 10 and nut 9.

1 minute three part of described pitman: left-hand thread section 2, adjusting rib 3, plus thread section 4.Regulate the mid portion that rib 3 is positioned at pitman 1, left-hand thread section 2 and plus thread section 4 lay respectively at the two ends of pitman 1.

11 minutes three parts of described elasticity folder: elasticity folder root segment 12, elasticity folder are gone up page or leaf 14 and elasticity folder nextpage 16.Wherein, elasticity folder root segment 12 links to each other with pitman 1; The interstitial hole of elasticity folder root segment 12 can be respectively matches with the plus thread section 4 and left-hand thread section 2 diameters of pitman 1, and design has positive and negative female thread 13; Page or leaf 14 gone up by the elasticity folder and elasticity folder nextpage 16 is designed to hollow structure, and the diameter of interstitial hole is design in advance as required; The outside that the elasticity folder is gone up page or leaf 14 and nextpage 16 all is designed to spheroid; The elasticity folder is gone up page or leaf 14 middle parts and is designed to the conical surface 15, and elasticity folder nextpage 16 middle parts are designed to concave surface 17.

5 minutes three parts of described staple: spiro rod section 6, sphere section 7, screw section 8, the first half are spiro rod section 6, and the middle part is a sphere section 7, and the bottom is a screw section 8.Wherein, screw section 8 can be a screw, also can be camber hook or spade hook.The diameter of spiro rod section 6 presss from both sides nextpage 16 less than elasticity and elasticity is pressed from both sides the interstitial hole diameter of going up page or leaf 14, and the diameter of sphere section 7 presss from both sides the upward interstitial hole diameter of page or leaf 14 greater than elasticity folder nextpage 16 and elasticity, and spiro rod section 6 has different external screw threads with screw section 8.

Described pad 10 bottoms have with the elasticity folder goes up the concave surface that page or leaf 14 spheroids match.

Two elasticity folders 11 that have positive and negative female thread 13 are contained on the left-hand thread section 2 and plus thread section 4 of pitman 1 by the female thread 13 of its root segment 12 respectively.

The spiro rod section 6 of staple 5 passes elasticity folder nextpage 16 and the elasticity folder is gone up in the interstitial hole of page or leaf 14, and sphere section 7 can not be passed because diameter is big, just in time is arranged in the concave surface 17 of elasticity folder nextpage 16; Pad 10 is through on the spiro rod section 6, and the sphere that its concave surface and elasticity folder are gone up page or leaf 14 matches, and nut 9 also is through on the spiro rod section 6.

Because pitman 1 has left-hand thread section 2, regulates rib 3 and plus thread section 4, therefore, can change two distances between the elasticity folder 11 by rotating adjusting rib 3.

Because the elasticity folder is gone up the diameter of the interstitial hole diameter of page or leaf 14 and elasticity folder nextpage 16 greater than the spiro rod section 6 of staple 5, so the sphere section 7 of staple 5 can be pressed from both sides in the concave surface 17 of nextpage 16 in elasticity and be rotated, simultaneously the spiro rod section 6 of staple 5 can be on the elasticity folder be done the swing of garden week in the conical surface 15 at page or leaf 14 middle parts, promptly the angle between staple 5 and the pitman 1 can be on the elasticity folder adjusting arbitrarily in the tapering allowed band of page or leaf 14 conical surfaces 15.

The adjustability of above-mentioned distance and two factors of angle can satisfy the fixedly needs of different patients or same patient's different spinal levels.

Practical operation step of the present utility model is as follows:

1 on the left-hand thread section 2 and plus thread section 4 of pitman 1, loads onto two elasticity that have positive and negative female thread 13 respectively and presss from both sides 11 standby.

2 needs fix or the pedicle of vertebral arch or vertebral plate of orthopedic spinal levels on, fix two staples 5.

3 two staple 5 spiro rod sections 6 pass the nextpage 16 of two standby in the step 1 elasticity folders 11 and the interstitial hole of last page or leaf 14 respectively.

4 pads 10 are enclosed within on the spiro rod section 6, notice that the concave surface of pad 10 is downward.

5 nuts 9 are screwed on the spiro rod section 6, temporarily do not tighten.

6 swing elasticity folders 11 meet the requirements the staple 5 and the angle of pitman 1.Generally can be on elasticity folder regulate arbitrarily in the tapering allowed band of page or leaf 14 conical surfaces 15.

7 fastening nuts 9 make staple 5 fixing with pitman 1.

8 fix the staple 5 of pitman 1 other end equally.

The 9 adjusting ribs 3 of rod on 1 that are rotationally connected increase or shorten two distances between the staple 5, and it is met the requirements.Make two of staple 5 places save the distance that vertebras strut 6 pitch if desired, get final product with regulating pincers rotation adjusting rib 3.Equally, reduce the distance if desired, rightabout rotates adjusting rib 3 and gets final product.

Claims

1, a kind of spinal fracture internal fixation adjusting device, it is characterized in that: it comprises pitman (1), staple (5), elasticity folder (11), nut (9), pad parts such as (10), elasticity folder (11) is clipped on the pitman (1), and staple (5) is through in the elasticity folder (11).

2, backbone correcting according to claim 1 internal fixation adjusting device is characterized in that: described pitman (1) two ends are respectively left-hand thread section (2) and plus thread section (4), and mid portion is for regulating rib (3).

3, backbone correcting according to claim 1 internal fixation adjusting device, it is characterized in that: described elasticity folder (11) branch elasticity folder root segment (12), elasticity folder are gone up page or leaf (14) and elasticity folder nextpage (16) three parts, and elasticity folder root segment (12) links to each other with pitman (1).

4, according to claim 1 or 3 described backbone correcting internal fixation adjusting devices, it is characterized in that: the plus thread section (4) and left-hand thread section (2) diameter of described elasticity folder root segment (12) interstitial hole and pitman (1) match, and design has positive and negative female thread (13).

5, according to claim 1 or 3 described backbone correcting internal fixation adjusting devices, it is characterized in that: page or leaf (14) gone up by described elasticity folder and elasticity folder nextpage (16) is designed to hollow structure.

6, according to claim 1 or 3 described backbone correcting internal fixation adjusting devices, it is characterized in that: the outside that described elasticity folder is gone up page or leaf (14) and nextpage (16) all is designed to spheroid.

7, according to claim 1 or 3 described backbone correcting internal fixation adjusting devices, it is characterized in that: described elasticity folder is gone up page or leaf (14) middle part and is designed to the conical surface (15), and elasticity folder nextpage (16) middle part is designed to concave surface (17).

8, backbone correcting according to claim 1 internal fixation adjusting device is characterized in that: described staple (5) the first half is spiro rod section (6), and the middle part is sphere section (7), and the bottom is screw section (8).

9, according to claim 1 or 8 described backbone correcting internal fixation adjusting devices, it is characterized in that: described spiro rod section (6) diameter presss from both sides nextpage (16) less than elasticity and the elasticity folder is gone up the interstitial hole diameter of page (14), and sphere section (7) diameter presss from both sides nextpage (16) greater than elasticity and the elasticity folder is gone up page or leaf (14) interstitial hole diameter.

10, backbone correcting according to claim 1 internal fixation adjusting device is characterized in that: described pad (10) bottom is a concave surface.