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Cervical fusion apparatus

A fusion device and cervical spine technology, applied in the field of cervical spine fusion devices, can solve the problems of immune rejection, limited quantity, and high cost of allograft bone transplantation, and achieve the effect of maintaining cervical spine physiological curvature, good cervical spine physiological curvature, and reasonable structure

Active Publication Date: 2016-03-02
BEIJING FULE SCI & TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a cervical fusion device, which solves the problem of limited source of autologous bone, increased trauma at the donor site, and inability to provide timely mechanical stability; high cost and limited quantity of allogeneic bone transplantation, and allogeneic bone is easy to cause virus transmission and immune rejection question

Method used

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  • Cervical fusion apparatus
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  • Cervical fusion apparatus

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Embodiment Construction

[0028] Such as Figure 1~6 As shown, a cervical fusion device includes a locking screw 2 and a fusion device body 3, the fusion device body 3 is fixed into the cervical vertebral body through the locking screw 2, and the fusion device body 3 is provided with a plurality of positioning pins 1 and a plurality of limit pins 4, the positioning pins 1 can be visualized under X-rays, and are used to control the implantation position of the fusion cage body 3, and the limit pins 4 are used to prevent the locking screws 2 from coming out ;

[0029] The fusion device body 3 is a ring-shaped structure, and the middle through hole of the ring-shaped structure is a bone graft hole 10, and the bone graft hole 10 is filled with fragments or powdered implants; the ring-shaped structure includes a ring-shaped The front section and the fixed section are two parts. The annular front section includes upper and lower surfaces and side walls. The annular front section is provided with a first pos...

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Abstract

The invention discloses a cervical fusion apparatus, comprising a lock screw and a fusion apparatus body. The fusion apparatus body is fixed in cervical vertebra through the lock screw and is provided with a plurality of positioning pins and a plurality of limiting pins. The positioning pins can be developed in X-ray and used for controlling an implantation position of the fusion apparatus body. The fusion apparatus body is in a ring structure, a middle through hole of which is a bone grafting hole, and comprises a circular front segment and a fixing segment, the circular front segment comprises an upper surface, a lower surface and a sidewall, the circular front segment is provided with a first positioning hole, the middle of the fixing segment is provided with a threaded hole, and the threaded hole is communicated with the bone grafting hole; the upper and lower sides of the threaded hole are symmetrically provided with mounting holes, a groove is provided in the outside of the threaded hole, and left and right groove sides of the groove are provided with second positioning holes. The cervical fusion apparatus is reasonable in structure, convenient to mount and stable and firm, and the upper and lower surfaces of the apparatus are of rib tooth structures, allowing instant stability after implanting, promoting fusion and keeping well cervical physiological curvature.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical instruments, in particular to a cervical fusion device. Background technique [0002] Intervertebral fusion is one of the methods to treat spinal diseases, and more and more people receive intervertebral fusion every year. Intervertebral fusion includes autologous bone graft fusion and allograft bone graft fusion. Due to the limited source of autologous bone, increased donor site trauma, and inability to provide timely mechanical stability, the clinical application of intervertebral fusion is limited, while allograft bone graft not only High cost, limited quantity, virus transmission and immune rejection caused by allograft bone are also the main reasons for its wide application in clinic. Therefore, how to develop a new type of cervical fusion device to solve the limited source of autologous bone, increase the trauma of the donor site, and fail to provide timely mechanical stability; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/442
Inventor 王雅玲黄锡艺缪国帅鲁文胜李洪艳
Owner BEIJING FULE SCI & TECH DEV
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