CN2860378Y

CN2860378Y - Internal fixator for anterior cervical vertebra with scale mark

Info

Publication number: CN2860378Y
Application number: CN 200520048126
Authority: CN
Inventors: 周许辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2007-01-24
Anticipated expiration: 2015-12-29

Abstract

The utility model relates to the field of medical devices in particular to an inner fixator in the anterior neck with scale marks, consisting of a fixator and a bolt. The fixator 1 is board-shape and its front and back sections are arc or near arc surfaces. Two holes 2 are both opened on the top and bottom section of the front end surface of the piece 1. The utility model is characterized in that a strip observation window 4 is opened in the middle of the front end surface of the fixator 1 and scale marks 6 are arranged at the two edges of the observation window 4. The utility model has a novel structure comparing with current technology. One can observe clearly whether the fixator, the vertebra and the implanted bone are in their right position through the observation window during operation and the fusion of the vertebra and the implanted bone after operation. One can also observe clearly whether the fixator is parallel with the top and bottom edge of the vertebra. The bolt can be screwed into the vertebra accurately in operation. The inner fixing, the sliding of the implanted bone and the fracture of the vertebra will never happen. The utility model is worthwhile to promote its application.

Description

The throat road internal fixation spare that has scale mark

[technical field]

This utility model relates to technical field of medical instruments, specifically a kind of throat road internal fixation spare that has scale mark.

[background technology]

When patient is expert at anterior cervical operation,, make cervical vertebra reach stable at once, in decompression, need go internal fixation operation in order to recover the physiologic radian of intervertebral height and cervical vertebra.The throat road internal fixation system that uses is made up of fixture, screw at present.Earlier the fixture facies ventralis is attached at vertebral body and bone grafting place during use, again the screw of screw by fixture being pierced vertebral body fixes, because the dissection and the operation technique space of preceding cervical region complexity are limited, therefore fixture often appears, the screw implantation position is inaccurate, cause internal fixation, plant bone mass to come off and vertebral fracture, need operation once more.Thereby bring very big misery to patient, even can add heavy patient's the state of an illness.

[summary of the invention]

The purpose of this utility model is exactly will solve above-mentioned deficiency and a kind of throat road internal fixation spare that has scale mark is provided, and it can be fixed on the cervical vertebral body exactly.

For achieving the above object, the utility model proposes a kind of throat road internal fixation spare that has scale mark, form by fixture, screw, fixture 1 is plate-like, its front and rear end is circular arc or approximate arc-shaped surface, fixture 1 upper and lower end face is a curved surface, have arc groove 5 on the left and right end face of fixture 1, upper and lower end position on fixture 1 front end face all has two circular holes 2, it is characterized in that the middle part on fixture 1 front end face has a bar shaped visual window 4, the edge at visual window 4 two ends is provided with scale mark 6; Fixture and screw employing rustless steel or pure titanium or titanium alloy or absorbable biological material are made; Described scale mark is the millimeter scale mark; Be equipped with anti-slip tank 9 and locking member 3 on the fixture rear end face.

This utility model is compared with prior art, novel structure, simple, whether can clearly observe the position of fixture and vertebral body and plant bone mass by the visual window on the fixture during operation accurate, can clearly observe the fusion situation between vertebral body and plant bone mass after the operation, by the scale mark on the fixture, upward whether lower edge is parallel with vertebral body can clearly to observe fixture, can exactly screw be screwed in the vertebral body in the operation, or else internal fixation can appear, plant bone mass comes off and vertebral fracture, patient more can early recovery, is worthy of popularization.

[description of drawings]

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

Fig. 2 is the rearview of Fig. 1.

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

Fig. 4 is user mode figure of the present utility model.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4,1 is fixture, and 2 is circular hole, and 3 is locking member, and 4 is visual window, and 5 is the arc groove, and 6 is scale mark, and 7 is small sircle hole, and 8 is groove, and 9 is anti-slip tank, and 10 is screw, and 11 is plant bone mass, and 12 is vertebral body.

[specific embodiment]

Referring to Fig. 1, Fig. 2, this utility model adopts Mould Machining to make molding, fixture 1 is made the stripe board bulk, before it, rear end face is the Y-direction arc-shaped surface, on the fixture 1, the lower surface is two semicircle curved surfaces, the left side of fixture 1, have arc groove 5 on the right side, on on fixture 1 front end face, lower end part all has two circular holes 2, have a small sircle hole 7 between two circular holes 2, middle part on fixture 1 front end face has a bar shaped visual window 4, the edge at visual window 4 two ends is provided with millimeter scale mark 6, has a groove 8 between visual window 4 and the small sircle hole 7, is equipped with anti-slip tank 9 and locking member 3 on fixture 1 rear end face.This technology concerning those skilled in the art still more clearly.

Claims

1. throat road internal fixation spare that has scale mark, form by fixture, screw, fixture (1) is plate-like, its front and rear end is circular arc or approximate arc-shaped surface, the upper and lower end face of fixture (1) is a curved surface, have arc groove (5) on the left and right end face of fixture (1), upper and lower end position on fixture (1) front end face all has two circular holes (2), it is characterized in that the middle part on fixture (1) front end face has a bar shaped visual window (4), the edge at visual window (4) two ends is provided with scale mark (6).

2. the throat road internal fixation spare that has scale mark according to claim 1 is characterized in that fixture and screw adopt rustless steel or pure titanium or titanium alloy or absorbable biological material to make.

3. the throat road internal fixation spare that has scale mark according to claim 1 is characterized in that described scale mark is the millimeter scale mark.

4. the throat road internal fixation spare that has scale mark according to claim 1 is characterized in that being equipped with on the fixture rear end face anti-slip tank and locking member.