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A kind of artificial lumbar intervertebral disc prosthesis

A lumbar intervertebral disc and prosthesis technology, which is applied in the field of prostheses, can solve the problem of artificial lumbar intervertebral disc prosthesis being blank, etc., achieves good stabilization effect, achieves high reconstruction, and preserves and improves physiological function motion.

Active Publication Date: 2017-11-10
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the design of artificial lumbar intervertebral disc prosthesis according to the anatomical structure of Chinese people is still blank

Method used

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  • A kind of artificial lumbar intervertebral disc prosthesis
  • A kind of artificial lumbar intervertebral disc prosthesis
  • A kind of artificial lumbar intervertebral disc prosthesis

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the drawings.

[0026] The lumbar intervertebral disc of a normal human body is the soft tissue between the upper and lower vertebral bodies. The vertebral body is similar to a rigid body structure, which mainly relies on the lumbar intervertebral disc to transmit load, absorb shocks and complete normal human activities. According to clinicians, the plane of the endplate of the normal vertebral body is concave, and the lower endplate of the upper vertebral body and the upper endplate of the lower vertebral body are in a certain arc, so the outer endplate of the artificial lumbar intervertebral disc is set The dome structure is conducive to long-term fixation, and the outer planes of the two end plates are at a certain angle.

[0027] The artificial lumbar intervertebral disc prosthesis structure of the present invention is as follows Figure 1-Figure 7 As shown, an upper endplate 10, a nucleus 20, ...

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Abstract

The invention discloses an artificial lumbar intervertebral disc prosthesis, which is characterized in that: a "sandwich" structure is formed by an upper endplate 10, a nucleus pulposus 20, and a lower endplate 30; the nucleus pulposus 20 is composed of an upper structure 21 and a lower structure 22 , the upper structure 21 is a spherical dome structure, the lower structure 22 is a boss-shaped structure and is provided with a protruding guide rail 23 along the transverse direction of its lower plane; The spherical dome structure of the upper structure 21 of the core 20 is matched and connected to form a ball joint; the groove 31 provided on the upper plane of the lower end plate 30 and the guide groove 32 protruding along the transverse direction of the groove 31 are respectively connected with the The lower structure 22 of the nucleus pulposus 20 and the guide rail 23 are mated and connected. The artificial lumbar intervertebral disc prosthesis of the present invention is designed according to the anatomical structure parameters of Chinese bones, and can realize a certain range of six working conditions of flexion, extension, left rotation, right rotation, left bending and right bending; At the same time, the rotation movement and the translation movement can realize the omnidirectional movement.

Description

Technical field [0001] The invention relates to a prosthesis that can be implanted into a human body for replacement, and particularly relates to an artificial prosthesis used to replace a lumbar intervertebral disc that has lesions between lumbar vertebrae segments, which can reconstruct the lumbar spine structure, restore physiological activities and improve the quality of life of patients Lumbar intervertebral disc prosthesis. Background technique [0002] The lumbar intervertebral disc is composed of the outer fibrous annulus, the inner nucleus pulposus and the upper and lower vertebral body endplates. It is the largest bloodless tissue of the human body. Its main function is to transmit the load between the vertebral bodies and ensure the mobility and stability of the vertebral body. As people get older, the decrease in water content of the lumbar intervertebral disc nucleus pulposus will cause its degenerative disease. The degenerative lumbar intervertebral disc changes it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44
Inventor 柯昌保卢俊哲廖振华刘伟强
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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