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Glenoid prosthesis applied to total shoulder joint replacement

A glenoid and shoulder joint technology, applied in the direction of shoulder joints, prostheses, joint implants, etc., can solve the problems of difficult replacement of polyethylene parts and chronic loosening of the glenoid, and achieve stable installation, avoid loosening, and stable connection Effect

Pending Publication Date: 2020-06-16
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: chronic loosening occurs after the glenoid is implanted, and the polyethylene part in the glenoid is not easy to replace after wear and tear

Method used

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  • Glenoid prosthesis applied to total shoulder joint replacement
  • Glenoid prosthesis applied to total shoulder joint replacement
  • Glenoid prosthesis applied to total shoulder joint replacement

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Effect test

Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] refer to figure 1 , is a glenoid prosthesis used in total shoulder arthroplasty disclosed in the present invention, comprising a glenoid implant 1 and a glenoid support 2, the glenoid implant 1 is mounted on the shoulder joint, the glenoid The support body 2 is in contact with the humeral head, the glenoid implant 1 is made of titanium alloy material, and the surface of the glenoid implant 1 and the joint is sprayed with titanium powder to increase the bone ingrowth effect of the glenoid implant 1 ; The glenoid support body 2 is made of polyethylene, which can reduce the wear on the humeral head, and the glenoid implant body 1 and the glenoid support body 2 have a clamping structure. After the glenoid support body 2 wears out, The glenoid support body 2 can be replaced.

[0039] refer to figure 2 with image 3 , the top view of the glenoid implant...

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Abstract

The invention relates to a glenoid prosthesis applied to total shoulder joint replacement, and belongs to the technical field of medical instruments. The glenoid prosthesis comprises a glenoid implant and a glenoid support body; a groove is formed in the glenoid implant, two through holes are formed in the bottom surface of the interior of the groove, screws are inserted into the through holes, and the tail ends of the screws can be inserted into a bone canal in a shoulder joint; a plurality of evenly-distributed clamping blocks are fixedly connected to the inner wall of the groove; a plurality of clamping plates corresponding to the clamping blocks are fixedly connected to the surface, close to the glenoid implant, of the glenoid support body; protrusions are integrally formed on the side walls, close to the clamping blocks, of the clamping plates, and the protrusions can be clamped between the clamping blocks and the bottom face of the groove; inclined planes are arranged on the surfaces, close to each other, of the protrusions and the clamping blocks, and the inclined planes on the protrusions and the clamping blocks are opposite in inclination direction. The glenoid prosthesishas the effects that the glenoid implant is prevented from loosening, and the polyethylene part in the prosthesis is convenient to replace.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a glenoid prosthesis used in total shoulder arthroplasty. Background technique [0002] Total shoulder arthroplasty is suitable for osteoarthritis, including primary and secondary, as well as rheumatoid arthritis, traumatic arthritis, rotator cuff injury arthropathy, artificial shoulder joint revision, osteonecrosis, tumor, shoulder joint Dysplasia, old infection, etc. [0003] The existing glenoid prosthesis is divided into two ways of fixation: bone cement fixation and HA spraying biological fixation. Bone cement fixation is suitable for patients with advanced age, osteoporosis, and poor bone quality. Biological fixation requires good bone quality, and is usually suitable for young and middle-aged people and most middle-aged and elderly people; The difference can be divided into with bolt type, with keel type glenoid. [0004] The above existing technical solutions h...

Claims

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Application Information

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IPC IPC(8): A61F2/40A61F2/30
CPCA61F2/4081A61F2/30767A61F2/30749A61F2220/0016A61F2002/3093A61F2002/30426A61F2310/00023A61F2310/00407A61F2002/30024
Inventor 郭静史春宝刘浩
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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