Shoulder joint prosthesis

A shoulder joint and prosthesis technology, applied in the field of orthopedic medical devices, can solve the problems of poor stability of unrestricted artificial shoulder joint movement

Pending Publication Date: 2019-03-08
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims to provide a shoulder joint prosthesis to solve the problem of poor stability of unrestricted artificial shoulder joint movement in the prior art

Method used

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  • Shoulder joint prosthesis
  • Shoulder joint prosthesis
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Examples

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include...

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Abstract

The invention provides a shoulder joint prosthesis, comprising an outer cup, a lining, a ball head and a humeral shank. The outer cup, the lining and the ball head are nested in sequence, wherein theouter cup includes an outer cup body and a first limiting projecting wall arranged at an opening of the outer cup body, the outer cup body has a first spherical inner cavity, the first limiting projecting wall is raised from the center face of the first spherical inner cavity, and the end face of the outer cup body is lower than the center face of the first spherical inner cavity; the lining includes a hemispherical housing body and a second limiting projecting wall and third limiting projecting wall arranged at an opening of the hemispherical housing body, the hemispherical housing body has asecond spherical inner cavity for receiving the ball head, the second and third limiting projection walls block the ball head from leaving the second spherical inner cavity, and the hemispherical housing body is provided with a groove to make way for the humeral shank. The problem can be effectively solved that a non-limiting artificial shoulder joint of the prior art for bone structure and rotator cuff deficiency caused by tumors or severe wounds has poor activity stability.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a shoulder joint prosthesis. Background technique [0002] The shoulder joint consists of the glenoid of the scapula and the head of the humerus. The articular surfaces of the two connected bones are quite different in size, specifically, the articular fossa can only accommodate 1 / 4 to 1 / 3 of the joint head. The lip of the glenoid deepens around the glenoid fossa. The joint capsule is weak and loose, and is attached between the periphery of the glenoid and the anatomical neck of the humerus. There is also the long head tendon of the biceps brachii wrapped by synovium in the joint capsule wall, and this tendon can strengthen the shoulder joint. [0003] The shoulder joint is the most flexible ball-and-socket joint in the whole body, which can be used for flexion, extension, retraction, extension, rotation and circular movement. In addition, the large differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/40
CPCA61F2/4014A61F2002/30378A61F2002/30518A61F2002/4022A61F2002/4037A61F2002/4044A61F2/4059A61F2/4081A61F2002/30329A61F2002/30433A61F2002/305A61F2002/30574A61F2002/30649A61F2002/30652A61F2002/30654A61F2002/30784A61F2002/30787A61F2002/30827A61F2002/30891A61F2002/4011A61F2002/4051A61F2002/4062A61F2220/0025A61F2/30771A61F2002/4085
Inventor 王彩梅
Owner BEIJING AKEC MEDICAL
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