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Memory fixed type bionic full metacarpophalangeal joint replacement part

A metacarpophalangeal joint and fixed technology, which is applied in the field of memory-fixed bionic full metacarpophalangeal joint replacement, can solve the problems of cumbersome operation and achieve the effect of simple operation, simple structure, and beneficial to clinical application and promotion

Pending Publication Date: 2022-04-15
李川
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also disadvantages that the operation is relatively cumbersome

Method used

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  • Memory fixed type bionic full metacarpophalangeal joint replacement part
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  • Memory fixed type bionic full metacarpophalangeal joint replacement part

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any transformation or replacement based on the teaching of the present invention belongs to the protection scope of the present invention.

[0019] as attached Figure 1~10 As shown, the memory-fixed bionic full metacarpophalangeal joint replacement of the present invention is composed of a metacarpal bone fixation body 1, a metacarpal joint pad 2 and a phalange fixation body 3, and the metacarpal joint pad 2 is fixed to the phalanges. The body of the metacarpal bone 3 is inserted and matched, and the metacarpal bone fixing body 1 is articulated and articulated with the metacarpal bone friction surface 21 on the metacarpal joint friction and pad 2 through the metacarpal articular surface 11 provided at the front end; the metacarpal bone fixing body 1. Metacarpal internal support 12 is arranged symmetrically at the rear...

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Abstract

The memory fixed type bionic full metacarpophalangeal joint replacement part comprises a joint body and an intramedullary connecting body, the joint body is divided into a near-end joint body and a far-end joint body, and the top face of the joint body is of an articular surface structure; the near-end joint body and the far-end joint body are arranged on the joint pad, namely the top surfaces of the near-end joint body and the far-end joint body are respectively and movably matched with the working surface of the joint pad in a joint manner, the near-end joint body or the far-end joint body is designed according to a human body biomechanics and anatomy structure, and an intramedullary connector is arranged at the bottom end of the near-end joint body or the far-end joint body and is of a split combined conical structure. Based on ergonomic structural design and Ni-Ti memory alloy manufacturing, the technical advantages of the ergonomic structural design and the Ni-Ti memory alloy manufacturing are fully exerted, so that the bionic metacarpophalangeal joint replacement component is better in conformity, better conforms to the human body biomechanical structure and is good in mechanical cooperation; the memory alloy cannot be loosened due to bone healing and human body movement, and the treatment and prognosis effects of a patient are improved. The device is simple in structure, easy and convenient to use and beneficial to clinical application and popularization.

Description

technical field [0001] The invention belongs to the technical field of orthopedic instruments, and in particular relates to a memory-fixed bionic full metacarpophalangeal joint replacement part with reasonable structure and convenient assembly. Background technique [0002] The hand is the most important labor organ, and the metacarpophalangeal joint is an important structure of the hand. In the course of daily production and life, it is unavoidable for people to suffer accidents that cause fractures of the metacarpal bones and phalanges, or due to diseases such as rheumatoids, the movement of the palms and knuckles is limited, and even the normal physiological functions are lost. For patients with metacarpophalangeal cartilage injury, joint stiffness and surgical release ineffective, or joint function cannot be restored, arthrodesis, toe-metatarsal joint free transplantation and artificial finger joint replacement can be selected for treatment. Arthrodesis is currently the...

Claims

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Application Information

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IPC IPC(8): A61F2/42A61F2/46
Inventor 李川郭民政陈婷徐永清蒙旭晗徐昕明贺建林
Owner 李川
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