Intervertebral disc prosthesis shock absorption structure

An intervertebral disc and prosthesis technology, applied in the direction of spinal implants, etc., can solve the problems of insignificant cushioning effect, inability to achieve cushioning effect, ceramic structure without cushioning effect, etc., to reduce medical costs, simple structure, and optimal cushioning. effect of effect

Inactive Publication Date: 2014-12-24
WEST CHINA HOSPITAL SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most intervertebral disc prostheses are metal-polyethylene or ceramic-ceramic structures. The ceramic structure does not have a cushioning effect. Although polyethylene has a certain degree of elasticity, the cushioning effect is not obvious, and the best cushioning effect cannot be achieved.

Method used

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  • Intervertebral disc prosthesis shock absorption structure
  • Intervertebral disc prosthesis shock absorption structure
  • Intervertebral disc prosthesis shock absorption structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 2 As shown, the height of the movable gap I4 is 0.5mm, the height of the movable gap II5 is 0.2mm, the elastic structure is a medical silicone elastic pad 6 with a thickness of 0.5mm, and the elastic pad 6 is arranged in the movable gap I4.

Embodiment 2

[0034] Such as image 3 As shown, the height of the movable gap I4 is 0.2mm, the height of the movable gap II5 is 0.5mm, the elastic structure is a medical silicone elastic pad 6 with a thickness of 0.5mm, and the elastic pad 6 is arranged in the movable gap II5.

Embodiment 3

[0036] Such as Figure 4 As shown, the height of the movable gap I4 is 0.6, the height of the movable gap II5 is 0.6 mm, the elastic structure is a medical silicone elastic pad 6 with a thickness of 0.6 mm, and the elastic pad 6 is arranged in the movable gaps I4 and II5.

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PUM

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Abstract

The invention discloses an intervertebral disc prosthesis shock absorption structure, which comprises an upper terminal plate, a lower terminal plate and a ball pad, wherein the ball pad consists of a ball body and a connecting post, the ball surface is movably arranged in a ball-shaped groove of the lower terminal plate, the connecting post is movably clamped and buckled in a groove of the upper terminal plate, in addition, a first moving gap is formed in the groove of the upper terminal plate, a second moving gap is formed between the upper terminal plate and the end, far away from the ball surface, of the ball body, and an elastic structure is arranged between the ball pad and the upper terminal plate. The intervertebral disc prosthesis shock absorption structure has the advantages that the intervertebral disc prosthesis has the obvious shock absorption effect, the impact load generated when the human body moves is relieved, and the human body is protected from the injury due to insufficient human body buffer.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a shock-absorbing structure of an intervertebral disc prosthesis. Background technique [0002] The human intervertebral disc has the characteristics of viscoelasticity, which can absorb the movement of the human body and alleviate the damage caused by the impact load to the human body. At present, most intervertebral disc prostheses are metal-polyethylene or ceramic-ceramic structures. The ceramic structure does not have a cushioning effect. Although polyethylene has a certain degree of elasticity, the cushioning effect is not obvious, and the best cushioning effect cannot be achieved. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a shock-absorbing structure for the intervertebral disc prosthesis, which can make the intervertebral disc prosthesis have a significant shock-absorbing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
Inventor 刘浩蔡勇徐文利陈家康
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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