A bone reconstruction principle-based personalized anterior interbody fusion cage design method

A technology of intervertebral fusion device and design method, which is applied in the field of personalized anterior intervertebral fusion device design, which can solve the problems of insufficient strength of the fusion device, settlement of the fusion device, unfavorable fusion, etc., so as to improve the fusion effect, facilitate fusion, and use long life effect
CN109766599APending Publication Date: 2019-05-17国家康复辅具研究中心
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
国家康复辅具研究中心
Publication Date
2019-05-17

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Abstract

The invention discloses a bone reconstruction principle-based personalized anterior interbody fusion cage design method, which comprises the following steps of A, acquiring a vertebral body image andperforming three-dimensional reconstruction to obtain a three-dimensional vertebral body model; B, establishing an initial model of the anterior interbody fusion cage; C, establishing a vertebral body-initial fusion cage model; D, establishing a cone-initial fusion cage finite element model; E, optimizing density distribution of an initial fusion cage finite element model in the cone-initial fusion cage finite element model; updating the material attribute of the anterior interbody fusion cage initial model by adopting a bone reconstruction method to obtain an optimized density distribution cloud picture of the initial fusion cage finite element model; F, shaping to obtain an anterior interbody fusion cage model; and G, estimating the effect of the anterior interbody fusion cage model after the anterior interbody fusion cage model is implanted into the vertebral body. The method not only has the characteristic of improving the strength of the fusion cage, but also has the characteristic of being conveniently fused with a vertebral body.
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Description

technical field

[0001] The invention relates to a design process of an anterior intervertebral fusion device, in particular to a personalized anterior intervertebral fusion design method based on the principle of bone reconstruction. Background technique

[0002] Lumbar interbody fusion is a common procedure in the treatment of degenerative conditions in the spine to stop the motion of the affected segment. During the procedure, the disc is removed and replaced with a fusion cage and bone graft. Intervertebral fusion cages can restore the height of the intervertebral space and stabilize the spine during lumbar interbody fusion, thereby providing a suitable mechanical environment for the fusion of adjacent vertebrae. The existing fusion device generally has a middle part that is a hole that penetrates up and down to fill the graft bone, and a solid part on the periphery to provide mechanical support. At present, most of the fusion devices on the market are standardized fusi...

Claims

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