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Elbow joint prosthesis

A technology for elbow joints and prostheses, applied in the direction of elbow joints, prostheses, knee joints, etc., can solve the problems of articular surface wear, humeral prosthesis or ulnar prosthesis loosening, and reduce the stability of elbow joint prosthesis connection, etc., to achieve Prevents wear and improves stability

Pending Publication Date: 2019-09-03
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to a certain extent, this also caused a large shaking problem between the ulnar prosthesis and the humeral prosthesis, which easily caused the loosening of the humeral prosthesis or the ulnar prosthesis, and reduced the connection stability of the elbow joint prosthesis
Even when the gap is large, it is easy to cause the wear of the articular surface at the elbow joint of the human body

Method used

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  • Elbow joint prosthesis
  • Elbow joint prosthesis
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Examples

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Embodiment Construction

[0026] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0027] figure 1 and figure 2 The structure of the elbow joint prosthesis 100 according to the present invention is shown. combine Figure 1 to Figure 4 Shown, this elbow joint prosthesis 100 comprises: Humeral prosthesis 1, humeral prosthesis 1 comprises humeral stem 11 and the humeral neck 12 that is connected with humeral stem 11 (as image 3 As shown), the opposite sides of the end 13 of the humerus neck 12 are respectively formed with a first lug 14 and a second lug 15 extending away from the length direction of the humerus stem 11 (such as figure 2 As shown), the first lug 14 is provided with a first thr...

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Abstract

The invention relates to the technical field of medical prosthesis, and discloses an elbow joint prosthesis. The elbow joint prosthesis includes: a tibial prosthesis including a tibial shank and a tibial neck connected to the tibial shank, wherein a first lug and a second lug extending along a length direction away from the tibial shank are respectively formed on opposite sides of the end of the tibial neck, and the first lug is provided with a first through hole and a second lug is provided with a second through hole; a ulnar prosthesis, wherein the ulnar prosthesis comprises a ulnar shank, aulnar neck and an ulnar head connected in sequence, and a third through hole extending transversely through the ulnar head is arranged on the ulnar head; and a shaft assembly, wherein the shaft assembly includes a connecting shaft for sequentially passing through the first through hole, the third through hole and the second through hole, and a ulnar sleeve sleeved on the connecting shaft and positioned at an area between the first lug and the second lug. Wherein, the outer surface of the ulnar sleeve forms the spherical fit with the inner surface of the third through hole. The elbow joint prosthesis of the present invention is capable of improving the stability after connection.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis, in particular to an elbow joint prosthesis. Background technique [0002] Elbow joint prosthesis is a surgical implant used in elbow joint replacement to replace the elbow joint of human patients. At present, the existing elbow prosthesis mainly consists of a humeral prosthesis, an ulnar prosthesis, a joint shaft locking nail and a shaft sleeve. The humeral prosthesis is used to connect with the humerus of the human body, the ulnar prosthesis is used to connect with the ulna of the human body, and the joint shaft locking nail is used to connect the ends of the humeral prosthesis and the ulnar prosthesis so that the two can rotate relative to each other to achieve elbow joint. For the movable function of the joint prosthesis, the bushing is set between the humeral prosthesis and the joint shaft locking nail, and between the ulnar prosthesis and the joint shaft locking nail, so as to av...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3804A61F2002/3822A61F2002/3831A61F2002/3813A61F2002/3006
Inventor 肖涟波史春宝欧阳兆逸解凤宝郭静
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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