Artificial intervertebral disc prosthesis

An intervertebral disc, artificial technology, applied in the direction of prosthesis, medical science, spinal implants, etc., can solve the problems of lack of animal models, difficulties in research and development of artificial lumbar intervertebral discs, complex physiological structure and biomechanical properties of intervertebral discs, etc.

Active Publication Date: 2013-12-04
THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Artificial intervertebral disc prosthesis replacement has good clinical application prospects, but due to the complex physiological structure and biomechanical properties of the intervertebral disc, and the lack of suitable animal models for animal research , so the research and development of artificial lumbar intervertebral disc is relatively difficult, and its clinical application is still in its infancy

Method used

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  • Artificial intervertebral disc prosthesis
  • Artificial intervertebral disc prosthesis
  • Artificial intervertebral disc prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Example 1 An artificial intervertebral disc prosthesis for completely replacing the cervical spine. The background involves a patient with cervical 4-5 intervertebral disc degeneration and dysfunction. The cervical intervertebral disc replacement operation of this segment is required, and the structure and function of the adjacent intervertebral disc of the patient are normal. . Before the design of the prosthesis, a series of imaging examinations should be performed on the patient, including: neutral cervical anteroposterior and lateral DR, cervical flexion and extension lateral dynamic DR, cervical scoliosis anteroposterior dynamic DR, cervical rotation and anteroposterior dynamic DR, and three-dimensional cervical CT .

[0118] Through the measurement of imaging data, the following data are obtained: the flexion range (ROM) of the cervical 3-4 intervertebral disc is α Flx , the extension ROM is α Ex , side bending ROM is α Lat (If the left and right side bends are...

Embodiment 2

[0144] Example 2 An artificial intervertebral disc prosthesis for completely replacing the lumbar spine. The background involves a patient with lumbar 4-5 intervertebral disc degeneration and dysfunction, who needs to undergo lumbar disc replacement surgery for this segment. The structure and function of the adjacent intervertebral disc of the patient normal. Before designing the prosthesis, patients need to undergo a series of imaging examinations, including: lumbar anteroposterior and lateral DR in neutral position, lumbar flexion and extension lateral dynamic DR, lumbar scoliosis anteroposterior dynamic DR, lumbar rotation and anteroposterior dynamic DR, lumbar three-dimensional CT .

[0145] Through the measurement of imaging data, the following data are obtained: the range of flexion (ROM) of the lumbar 3-4 intervertebral disc is α Flx , the extension ROM is α Ex , side bending ROM is α Lat (If the left and right side bends are inconsistent, take the average value), th...

Embodiment 3

[0170] Embodiment 3 An artificial intervertebral disc prosthesis, which is used to completely replace the intervertebral discs of the cervical and lumbar vertebrae, is specifically two-piece (the entire artificial intervertebral disc prosthesis is mainly composed of two structural parts), which specifically consists of an upper slider 1 and a lower slider The block 2 is composed of these two functional parts. The upper slider 1 and the lower slider 2 are respectively provided with sliding areas for the cooperation and contact between the two; the upper slider 1 and the lower slider 2 are also provided with corresponding The fixation device for the fixed connection of adjacent vertebral bodies; it is characterized in that: the artificial intervertebral disc prosthesis also meets the following requirements:

[0171]①The main body of the upper slider 1 is composed of the upper slider sliding part 102 and the upper slider end plate 103 fixedly connected together, wherein: the upper...

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Abstract

An artificial intervertebral disc prosthesis is used for completely replacing an intervertebral disc of the cervical vertebra and an intervertebral disc of the lumbar vertebra. The artificial intervertebral disc prosthesis is composed of an upper sliding block (1) and a lower sliding block (2) or composed of the upper sliding block (1), the lower sliding block (2) and a middle sliding block (3), and for the previous situation, the upper sliding block (1) and the lower sliding block (2) are respectively provided with a sliding area used for match contact between the upper sliding block (1) and the lower sliding block (2); for the post situation, the middle sliding block (3) is arranged between the upper sliding block (1) and the lower sliding block (2) and is in contact fit with the upper sliding block (1) and the lower sliding block (2) to form a sliding area. According to the artificial intervertebral disc prosthesis, a completely smooth contact interface is provided for movement of the prosthesis, and long-time stable and smooth movement is guaranteed. The artificial intervertebral disc prosthesis will be made of novel titanium alloy and polyether-ether-ketone material, and therefore mechanical properties of the artificial intervertebral disc prosthesis are durable and stable. The artificial intervertebral disc prosthesis has obvious innovation and performance advantages in structural design and material selection, and has excellent application prospect in the field.

Description

technical field [0001] The invention relates to the technical field of structural design and application of orthopedic medical supplies, and in particular provides an artificial intervertebral disc prosthesis for completely replacing human cervical and / or lumbar intervertebral discs. Background technique [0002] Due to various reasons, cervical and lumbar intervertebral disc lesions destroy the integrity of the intervertebral disc structure, causing the intervertebral disc to lose its original function of movement and load bearing, bringing pain, nerve dysfunction and other symptoms to people, and seriously affecting the human body. people's daily activities. When conservative treatment of intervertebral disc disease in the cervical and lumbar spine fails, surgical treatment should be performed. At present, the commonly used surgical methods include discectomy and discectomy and bone graft fusion, but both the former and the latter destroy the normal movement and bearing f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/44A61F2002/30001
Inventor 朱悦郝玉琳吴亚俊
Owner THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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