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Expandable fusion cage

A fusion device and opening direction technology, applied in medical science, spinal implants, prostheses, etc., can solve the problems of inflexible adjustment, narrow application range and inconvenience of fusion devices, and achieve simple structure, wide application range, The effect of high reliability

Pending Publication Date: 2019-07-12
HEBEI RUIHE MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common fusion cages are fixed in height and cannot be adjusted flexibly during use. To treat different patients, it is necessary to make a trial model in advance to make a fusion cage that meets the fixed specifications used by it. The scope of application is narrow, which brings great inconvenience to doctors

Method used

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  • Expandable fusion cage
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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] Please also refer to Figure 1 to Figure 5 Now, the expandable fusion device provided by the embodiment of the present invention will be described. An expandable fusion device includes a main body 1 , an expandable portion 2 and a rotating portion 3 .

[0030] One end of the main body 1 in the expansion direction is an abutting end 11 for abutting against a vertebral body 5 , and a receiving groove 12 is provided on the end surface of the other end. The expansion part 2 is provided in the receiving groove 12 to slide along the opening direction, and is use...

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PUM

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Abstract

The invention provides an expandable fusion cage, and belongs to the field of intraspinal implantation. The expandable fusion cage comprises a main body part, an expanding part and a rotating part. One end of the main body part is an abutting end, and the end face of the other end of the main body part is provided with a containing groove. The expanding part is slidably arranged in the containinggroove. The rotating part is rotatably arranged in the containing groove, and is provided with an eccentric protrusion for pushing the expanding part to protrude out of the containing groove. A supporting space for accommodating a supporting object is formed between the expanding part protruding out of the opening of the containing groove and the groove bottom of the containing groove, and the main body part is provided with a filling hole communicated with the supporting space. Compared with the prior art, the expandable fusion cage is simple in structure and high in reliability. During use,after the expandable fusion cage is implanted between two vertebral bodies, the rotating part is rotated to make the eccentric protrusion pushed out the expanding part from the opening of the containing groove, so that the two vertebral bodies are expanded; finally, the supporting space is filled with the supporting object such as bone cement or a bone block, so that the expanding stability is guaranteed, the fusion cage is suitable for various patients, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of spinal implants, and more specifically relates to an expandable fusion device. Background technique [0002] Today, people are under great pressure in work and life, and the aging population is intensifying. Therefore, in orthopedic clinics, spinal degeneration has become a frequently-occurring disease. This disease is mainly manifested in intervertebral disc degeneration, spinal stenosis, Spondylolisthesis, etc., which directly lead to compression of the spinal cord or nerve roots. In order to completely relieve the compression, restore the physiological curvature of the spine, and ensure the stability of the spine, all patients need surgical treatment. At the same time, some patients with spinal deformity, spinal trauma, spinal tumor, spinal repair and spinal infection also need intervertebral fusion to stabilize the lumbar segment. The principle of intervertebral fusion is to surgically implant an intervertebr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/447A61F2002/30518A61F2002/30556
Inventor 李严邵苍
Owner HEBEI RUIHE MEDICAL DEVICES CO LTD