Porous plate type artificial cervical intervertebral disc prosthesis

A cervical intervertebral disc and endplate technology, which is used in prostheses, medical science, spinal implants, etc. To prevent prosthesis displacement, reduce the incidence of prosthesis subsidence, and increase long-term stability

Pending Publication Date: 2017-11-24
THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating has good biocompatibility, with the in vivo absorption of the coating, the problem of bone-prosthesi

Method used

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  • Porous plate type artificial cervical intervertebral disc prosthesis
  • Porous plate type artificial cervical intervertebral disc prosthesis
  • Porous plate type artificial cervical intervertebral disc prosthesis

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as Figure 1-3 As shown, a porous endplate type artificial cervical intervertebral disc prosthesis includes: an upper endplate 1 and a lower endplate 2;

[0024] The upper surface of the upper endplate 1 is provided with a spherical dome I1a with a porous structure, the lower surface of the upper endplate 1 is provided with a hemispherical protrusion 1b, and the upper surface of the upper endplate 1 is provided with a penetrating spherical dome I1a with a porous structure The tapered protrusion I1c is provided, and the side edge of the upper endplate 1 is provided with an upwardly extending clamping boss I1d.

[0025] The lower surface of the lower endplate 2 is provided with a spherical dome II 2a with a porous structure, the upper surface of the lower endplate 2 is provided with an ellipsoidal groove 2b, and the hemispherical protrusion...

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Abstract

The invention discloses a porous plate type artificial cervical intervertebral disc prosthesis comprising an upper end plate and a lower end plate, wherein a spherical dome I with a porous structure and a conical bump I are arranged on the upper surface of the upper end plate, a hemispherical bump is arranged on the lower surface of the upper end plate, and a clamping boss I extending upwards is arranged on the side edge of the upper end plate; a spherical dome II with the porous structure and a conical bump II are arranged on the lower surface of the lower end plate, an ellipsoid groove is arranged on the upper surface of the lower end plate, and the hemispherical bump and the ellipsoid groove are matched with each other to form a ball groove joint, and a clamping boss II extending downwards is arranged on the side edge of the lower end plate. By using the porous plate type artificial cervical intervertebral disc prosthesis, dissection curved surfaces of an upper centrum and a lower centrum can be reserved in an operation, damage to original centrum structures is reduced, and the porous plate type structure has the latent function of prompting bones to grow in, and thus the artificial cervical intervertebral disc prosthesis has the long-term stabilizing capacity; the ball groove joint has three-dimensional multi-freedom degree activities such as rotation, flexion and extension and side bending, and meets the motion function of a normal intervertebral disc in a human body.

Description

technical field [0001] The invention relates to the technical field of structural design and application of medical supplies, and in particular provides a porous endplate type artificial cervical intervertebral disc prosthesis for completely replacing human cervical intervertebral discs. Background technique [0002] Anterior cervical discectomy, fusion and internal fixation (ACDF) has been the "gold standard" for the treatment of cervical disc degeneration for many years. However, although this operation can effectively relieve the symptoms of the diseased segment, the fusion will lead to the loss of physiological activity of the diseased segment, and the increase of motion and load of the adjacent segment, which will accelerate the degeneration of the adjacent segment to a certain extent (see reference Literature 1. Carrier CS, Bono CM, Lebl DR. Evidence-based analysis of adjacent segment degeneration and disease after ACDF: a systematic review. The spinejournal.2013; 13:1...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/442A61F2002/30199A61F2002/30891A61F2002/3093A61F2002/30772
Inventor 朱悦袁伟
Owner THE FIRST HOSPITAL OF CHINA MEDICIAL UNIV
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