Self -fixing type artificial vertebral body and mounting tool thereof

A self-fixation, artificial technology, applied in the field of artificial vertebral bodies, can solve the problems of space limiting spinal movement, nerve tissue damage and compression, surgical difficulty and trauma, etc., to achieve stable fixation and reduce damage.

Inactive Publication Date: 2004-03-24
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In clinical practice, artificial vertebral bodies need to be combined with spinal internal fixators to enhance stability, but it also causes a series of problems: 1) artificial vertebral bodies are fixed by pre-tightening and compression of spinal internal fixators. The fixed method can temporarily stabilize the purpose, but the use of spinal internal fixation devices can only be fixed on one side. After a long time, the physiological curvature of the spine will be affected. Once the pre-tightening force disappears, the artificial vertebral body is easy to loosen or move. 2) The use of spinal internal fixators will undoubtedly increase the difficulty and trauma of the operation, and its bulky size limits the space for spinal activities. More importantly, the activities of the spine will cause damage to surrounding blood vessels and nerve tissues. and compression, prone to complications

Method used

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  • Self -fixing type artificial vertebral body and mounting tool thereof
  • Self -fixing type artificial vertebral body and mounting tool thereof
  • Self -fixing type artificial vertebral body and mounting tool thereof

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] see figure 1 , 2, 3, 4, the self-fixating artificial vertebral body of the present invention comprises a middle cover 1, two side covers 4 and two end cover plates 7, and the middle cover 1, the side cover 4 and the end cover plates 7 With threaded connection, there are two ratchet nails on the end cover plate 7. The overall structure is symmetrical up and down, the interior is hollow, and the length is adjustable. The interior of the middle sleeve 1 is a cavity structure, which is used to add bone graft or bone morphogenic protein (BMP) to achieve long-term stable fusion of the artificial vertebral body and vertebrae. The middle sleeve 1 The middle part has a bending angle of 6 to 12 degrees according to the physiological curvature of the human spine to restore the physiological curve of the spine. The end of the side cover 4 connected to the end cov...

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Abstract

The present invention relates to a self-fixed artificial vertebral body and its mounting tool. It is formed from an intermediate cover, two side covers and two end cover terminal laminas which are assembled together. Its whole structure is up-down symmetrical, its interior is hollow, its length is adjustable, and its middle portion can be bent at a certain angle so as to ensure spinal physiological curve. Its mounting tool includer manual ring drill, curved wrench and sighting device. Said invention also provides its mounting method and steps.

Description

1. Technical field [0001] The invention relates to an artificial vertebral body in the medical industry, in particular to a self-fixing artificial vertebral body and an installation tool thereof. 2. Background technology [0002] Thoracic and lumbar burst fractures or bone tumors lead to extensive resection of diseased vertebrae and cause large bone defects in the human spine. At present, artificial vertebral body replacement and internal bone graft fusion are often used at home and abroad to fill bone defects and rebuild spinal stability. In clinical practice, artificial vertebral bodies need to be combined with spinal internal fixators to enhance stability, but it also causes a series of problems: 1) artificial vertebral bodies are fixed by pre-tightening and compression of spinal internal fixators. The fixed method can temporarily stabilize the purpose, but the use of spinal internal fixation devices can only be fixed on one side. After a long time, the physiological curv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61F2/44A61F2/46
CPCA61F2/44A61F2002/30001
Inventor 李涤尘王臻孙明林刘金广杨瑞甫
Owner XI AN JIAOTONG UNIV
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