Pelvic prosthesis

A prosthesis and pelvis technology, applied in the direction of prosthesis, additive manufacturing, medical science, etc., can solve the problems of high loosening probability and poor bonding strength between the pelvic prosthesis and the host bone interface.

Active Publication Date: 2021-01-01
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a pelvic prosthesis to solve the problem of poor bonding strength between the existing standard pelvic prosthesis and the host bone interface, a high probability of loosening, and the need to use a pelvic prosthesis instead of the human acetabular rotation central question

Method used

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Embodiment Construction

[0038] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0039] Such as Figure 1 ~ Figure 3 As shown, the embodiment of the present invention provides a pelvic prosthesis, including a body 1, one end of the body 1 is a sacral connection end, which is connected to the sacrum, and the other end is an ilium connection end, which is connected to the ilium. The main body 1 is resected according to the human sacrum tumor site, to preserve the human bone quality as much as possible, simplify the osteotomy, and reduce the loss of bone quality. The cross-sectional shape of the main body 1 is similar to an irregular polygon.

[0040] Such as figure 1 As shown, the body 1 is provided with a first through hole 4 for passing through the fixing nail 8, and the first through hole 4 extends from the side of the body 1 to th...

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Abstract

The invention provides a pelvic prosthesis, and belongs to the technical field of orthopedic implants. The pelvic prosthesis comprises a body, wherein one end of the body is a sacrum connecting end, and the other end of the body is an ilium connecting end. The body is provided with a first through hole for a fixing nail to penetrate through, and the first through hole extends to the sacrum connecting end face of the body from the side face of the body. A connecting plate is arranged on the side face of the ilium connecting end of the body, and a second through hole used for allowing the fixingnail to penetrate through is formed in the connecting plate. According to the scheme, the pelvic prosthesis can perform excision osteotomy on sacrum on the basis that the acetabular fossa rotation center is not damaged, one end of the pelvic prosthesis is connected with sacrum in a press-fit mode, the other end of the pelvic prosthesis is connected with ilium in a press-fit mode, and therefore, prosthesis replacement is achieved, and the pelvic prosthesis is easy and convenient to install, has enough bonding strength with a host bone interface and is high in stability, and the prosthesis loosening probability is low.

Description

technical field [0001] The invention relates to the technical field of orthopedic implants, in particular to a pelvic prosthesis. Background technique [0002] Surgical treatment is the main treatment method for pelvic malignant tumors. Its resection and reconstruction technology represents the top level in the field of bone tumor surgical treatment, especially for malignant tumors invading the sacral area, how to accurately resect the tumor and effectively reconstruct the defect after resection, is still an unresolved problem. The main complication of bone defect reconstruction with artificial pelvic prosthesis is the infection and loosening of the prosthesis. How to realize the fusion of the pelvic artificial prosthesis and the host bone and reduce the loosening rate of the prosthesis is the direction of current efforts. [0003] The existing pelvic and hip joint reconstruction methods include lumbar spine plus ischial fixation and lumbar spine plus sacrum fixation, both ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30A61F2/32A61F2/34
CPCA61F2/30734A61F2/30771A61F2/30942A61F2/32A61F2/34A61F2002/30329A61F2002/30772A61F2002/30985
Inventor 周海明
Owner BEIJING LIDAKANG TECH
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