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Inverted type glenoid cavity prosthesis of shoulder joint

A glenoid, shoulder joint technology, applied in shoulder joints, joint implants, joint implants, etc., can solve the problems of scapula impingement, glenoid prosthesis loosening, prosthesis loosening, etc., to increase the impact space, avoid Scapular impingement, shear stress relief effect

Inactive Publication Date: 2016-06-08
SHANGHAI SIXTH PEOPLES HOSPITAL
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of scapular impingement and prosthesis loosening in the existing reverse shoulder joint replacement system, the main purpose of the present invention is to provide a reverse glenoid prosthesis for shoulder joint to solve the problem of glenoid prosthesis loosening, Avoid postoperative scapular impingement, prolong the service life of the prosthesis and reduce revision

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  • Inverted type glenoid cavity prosthesis of shoulder joint
  • Inverted type glenoid cavity prosthesis of shoulder joint

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0021] figure 1 It is a structural schematic diagram of the inverted shoulder glenoid prosthesis of the embodiment of the present invention; figure 2 for figure 1 Schematic diagram of the structure of the medial glenoid base.

[0022] Such as Figure 1 to Figure 2 As shown, the reverse glenoid prosthesis of the embodiment of the present invention includes: the glenoid ball head 1, the glenoid base 2 and the glenoid fixator 3, one end of the glenoid base 2 is connected with the glenoid ball head 1, and the joint The other end of the glenoid base 2 is connected with the glenoid fixture 3 .

[0023] The glenoid head 1 adopts a large arc design, with an arc of 210-270 ...

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Abstract

The invention discloses inverted type glenoid cavity prosthesis of a shoulder joint. The inverted type glenoid cavity prosthesis comprises a glenoid cavity prosthesis ball head, a glenoid cavity prosthesis base and a glenoid cavity prosthesis fixing piece, wherein one end of the glenoid cavity prosthesis base is connected with the glenoid cavity prosthesis ball head, and the other end of the glenoid cavity prosthesis base is connected with the glenoid cavity prosthesis fixing piece; the glenoid cavity prosthesis fixing piece comprises an upper locking fixing piece, a center locking fixing piece and a lower locking fixing piece; the center locking fixing piece is positioned at the center position of the glenoid cavity prosthesis fixing piece; the upper locking fixing piece and the lower locking fixing piece are respectively positioned on both sides of the center locking fixing piece to form an angle of 150 degrees. According to the inverted type glenoid cavity prosthesis, the effect of avoiding shoulder blade striking, reducing shear stress of the prosthesis and improving the stability of the prosthesis are greatly enhanced, so that the inverted type glenoid cavity prosthesis is worthy to be popularized and used in the field of shoulder joint replacement.

Description

technical field [0001] The invention relates to a medical artificial joint system, in particular to a reverse shoulder joint glenoid prosthesis. Background technique [0002] Humeral head necrosis, severe comminuted fracture of the proximal humerus, and glenohumeral arthritis are common clinical diseases, and shoulder joint replacement is the ultimate treatment. When such injuries are combined with rotator cuff injuries or require revision after replacement, traditional hemi- or total-shoulder replacement cannot meet the treatment needs. Clinically, only the reverse shoulder system can be selected for surgery or revision. Due to anatomical reasons, the volume of the glenoid is small, and most of these patients have osteoporosis, decreased bone quality, or accompanied by different degrees of bone defects, and the glenoid prosthesis is subjected to shear stress, so it is easy to The prosthesis becomes loose and unstable. The current reverse shoulder prosthesis system in the...

Claims

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Application Information

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IPC IPC(8): A61F2/40
CPCA61F2/40A61F2/4081A61F2002/4088A61F2002/4096
Inventor 柴益民陈道运何耀华
Owner SHANGHAI SIXTH PEOPLES HOSPITAL
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