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High bionic intervertebral motion retention device

A retention device, bionic intervertebral technology, applied in medical science, prosthesis, spinal implants, etc., can solve the problems of difficult to avoid product stress concentration, difficult to normal vertebral body rotation, structural coordination and other problems, to promote the The effect of bone ingrowth and healing, reducing the difficulty of surgery, and reducing the amount of resection

Active Publication Date: 2018-12-11
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 retention device
  • High bionic intervertebral motion retention device
  • High bionic intervertebral motion retention device

Examples

Experimental program
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Embodiment Construction

[0035] The present invention will be further detailed below in conjunction with the accompanying drawings:

[0036] See figure 1 , image 3 As shown, the high bionic intervertebral motion retention device includes an upper bone plate 1, a lower bone plate 4, and a spherical friction formed by an inner 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 lined insertion groove 11 with a concave bottom surface, a bone plate body 12 with a turtle-shaped top surface, and inverted teeth 124 provided on the turtle-shaped bone plate body 12.

[0038] See image 3 As shown, the sagittal profile front end of the tortoise-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 oblique cone surface 122 at an angle of 2 ...

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Abstract

The invention relates to a high bionic intervertebral motion retention device. The high bionic intervertebral motion retention device comprising an upper bone plate and a lower bone plate is characterized in that a spherical friction pair composed of a lining and a nucleus pulposus and in clearance fit is embedded between the upper bone plate and the lower bone plate; the spherical radius of a concave spherical crown friction spherical groove in the lining is larger than that of an external convex friction ball top friction spherical surface of the nucleus pulposus; relative to the upper boneplate, the lining is stationary or rotates or translates; relative to the lower bone plate, the nucleus pulposus is stationary or rotates or translates; the rotation center of the spherical friction pair formed by the lining and the nucleus pulposus realizes movement without axis or free movement in 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 high bionic intervertebral motion retention device. Background technique [0002] Intervertebral motion retention devices currently have several products such as Bryan, Prestige product series, ProDisc C, Mobi-C, PCM, SRCURE-C, etc., which have been approved by the FDA and are widely used all over the world, but these products are only some of the structures with approximate bionic design They are representative of the application of new performance materials, the application of more degrees of freedom of movement, and the application of innovative ball-and-socket joint surfaces. At present, there is no high bionic motion retention device product approved by the FDA, and there is currently no intervertebral motion retention device in China. Approved by CFDA, the domestic intervertebral motion retention devices are all in the p...

Claims

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Application Information

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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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