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High bionic intervertebral motion preservation device

A retaining device and bionic intervertebral technology, applied in medical science, spinal implants, prostheses, etc., can solve problems such as difficult to avoid product stress concentration, difficulty in normal vertebral body rotation, and many structural fits, so as to promote The effect of bone ingrowth and healing, reducing the difficulty of surgery, and reducing the amount of resection

Active Publication Date: 2021-07-09
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to use during the operation, the fixation is firm and reliable, retains the range of motion of the cervical spine, reduces the complications of adjacent vertebral bodies, shortens the operation time, and simplifies the operation. If there are too many fits and too many contact surfaces, it is difficult to avoid the phenomenon of product stress concentration and the problem of friction and wear producing more wear debris

Method used

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  • High bionic intervertebral motion preservation device
  • High bionic intervertebral motion preservation device
  • High bionic intervertebral motion preservation device

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0036] see figure 1 , image 3 As shown, the high bionic intervertebral motion preservation device includes an upper bone plate 1 and a lower bone plate 4, and a spherical friction structure composed of a lining 2 and a nucleus pulposus 3 is embedded between the upper bone plate 1 and the lower bone plate 4. pair; the spherical friction pair is a clearance fit.

[0037] see image 3 As shown, the upper bone plate 1 is composed of a concave lining insertion groove 11 on the bottom surface, a turtle-shaped bone plate body 12 formed on the top surface, and inverted teeth 124 provided on the turtle-back bone plate body 12 .

[0038] see image 3 As shown, the front end of the sagittal profile of the turtle-shaped bone plate body 12 of the upper bone plate 1 is provided with a horizontal support surface 121, and the horizontal support surface 121 is located on an o...

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Abstract

The invention relates to a highly bionic intervertebral motion preservation device. The highly bionic intervertebral motion preservation device includes an upper bone plate and a lower bone plate, and a spherical friction pair composed of a lining and a nucleus pulposus is embedded between the upper bone plate and the lower bone plate; the spherical friction pair is in a clearance fit, and the inner lining The spherical surface radius of the concave coronal friction spherical groove is greater than that of the nucleus pulposus convex friction ball top friction spherical surface; the inner lining is stationary or rotates or translates relative to the upper bone plate, and the nucleus pulposus is stationary or rotates relative to the lower bone plate Or translation, the center of rotation of the spherical friction pair formed by the inner lining and the nucleus pulposus has no axial movement or can move freely in the front, back, left and right directions.

Description

technical field [0001] The invention relates to the technical field of structural design and application of orthopedic medical supplies, in particular to a highly bionic intervertebral motion preservation device. Background technique [0002] Intervertebral motion preservation devices currently have Bryan, Prestige product series, ProDisc C, Mobi-C, PCM, SRCURE-C and other products that have been approved by the FDA and are widely used around the world, but these products are only some of the structures that adopt a bionic design , They are representatives of the application of new performance materials, the application of more freedom of motion and the application of innovative ball and socket joint surfaces. At present, there is no high bionic motion preservation device product approved by FDA in foreign countries, and there is currently no intervertebral motion preservation device in China. Approved by the CFDA, domestic intervertebral motion preservation devices are all ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44
CPCA61F2/30771A61F2/44A61F2002/30518A61F2002/30818A61F2310/00005
Inventor 刘伟强祝佳廖振华徐林俞兴穆晓红
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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