Tenon-and-mortise type artificial vertebrae

A mortise-and-mortise and artificial technology, applied in the field of artificial prosthesis, can solve problems such as the collapse of the vertebral plate and limited user activities

Active Publication Date: 2018-03-06
TIANJIN ZHENGTIAN MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biomechanical experimental evaluation and clinical application show that the conventional artificial vertebral body will cause the middle plate of the vertebral body to collapse in the direction of axial compressor bending, and will restrict the user's activities

Method used

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  • Tenon-and-mortise type artificial vertebrae
  • Tenon-and-mortise type artificial vertebrae
  • Tenon-and-mortise type artificial vertebrae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The mortise and tenon type artificial vertebral body of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments of the description:

[0037] Such as Figure 1~10 As shown, a mortise and tenon type artificial vertebral body, the artificial vertebral body includes two upper and lower connectors 1 that are centrally symmetrical and at least one support body 2 arranged between the two connectors 1; the connector 1 and the support Both the bodies 2 and the adjacent support bodies 2 are connected by mortise and tenon.

[0038] The connecting body 1 is a hollow cube whose upper and lower ends are open, and the top of the front wall forms a plate-shaped tenon 4, and the top of the corner formed by the left wall and the rear wall and the right wall and the rear wall all form an angled corner. The tenon 5 and the gap between the two corner tenons 5 form a tenon groove 7 , and a plurality of teeth 6 are formed on the l...

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PUM

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Abstract

The invention discloses a tenon-and-mortise type artificial vertebrae, which comprises an upper connecting body, a lower connecting body and at least one support body, wherein the upper connecting body and the lower connecting body are in a center symmetry state; the at least one support body is arranged between the two connecting bodies; the connecting bodies and the support body, and the adjacent support bodies are in tenon-and-mortise connection. The invention provides an artificial vertebrae of a tenon-and-mortise structure; the stability is high; different quantity of support components can be selected according to requirements of different users; the proper length is formed; better matching is realized with the original vertebrae bone; the connection failure due to stress concentration in a fixed position is avoided; the matching degree of the artificial vertebrae and the human body and the reliability are improved; the load on the human body vertebrae bone can be reduced; the occurrence of complications of human body vertebrae section regression and the like can be reduced.

Description

technical field [0001] The invention belongs to the field of artificial prostheses, in particular to a mortise and tenon type artificial vertebral body. Background technique [0002] Vertebral tumors, severe comminuted fractures, and certain infectious diseases such as tuberculosis often cause destruction of the vertebral body, which may lead to spinal cord and nerve damage or collapse of vertebral segments and angular deformity of the spine. Vertebrectomy is often required in patients with obvious neurological dysfunction or angular deformity. [0003] The emergence of artificial vertebral bodies provides a more reliable treatment method for patients with spinal tumors, spinal tuberculosis and trauma. The current artificial vertebral body substitutes can be roughly divided into filling type, such as bone cement, and supporting type, such as titanium mesh, and supporting and fixed type. Due to the different designs, their biomechanical stability also varies. The biomechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/447A61F2002/30593
Inventor 郑晓明
Owner TIANJIN ZHENGTIAN MEDICAL INSTR CO LTD
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