Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester

A technology of knee joint replacement and swing guide rod, which is applied in the direction of testing wear resistance, etc., can solve the problems of unsatisfactory use of knee prostheses, and achieve the effects of easy control, high precision, and small cumulative error

Inactive Publication Date: 2014-03-12
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of knee-containing prosthesis after surgery is not satisfactory

Method used

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  • Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester
  • Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester
  • Six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester

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specific Embodiment approach

[0040] Such as figure 1 Shown, the present invention is made up of right part, left part and base 1, and right part is the driving device of wear machine, on the right side of whole device, and left part is the actuator of wear machine, on the left side of whole device. The two are connected through a swing guide rod mechanism, so that the rotary motion of the motor 13 is converted into the swing and flexion motion of the long axis 4 and the femoral prosthesis 29 . Both the right part and the left part are installed and fixed on the base 1.

[0041] For the actuator of the wear machine, the specific description is as follows:

[0042] The spherical hinge base 17 is connected to the groove in the base 1 through the hex head bolt 15, and the installation requirements are as follows: figure 1 As shown, two adjacent ball joint bases 17 located farther away are relatively installed. And when the spherical hinge base 17 is designed, the angle between its axis and the horizontal p...

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Abstract

A six-degree-of-freedom parallel and oscillating guide bar mechanism combined knee-replacing prosthesis abrasion tester comprises a right part, a left part and a base; the right part is on the right side of the abrasion tester, and is a driving structure; the left part is on the left side of the abrasion tester, and is an actuating structure; a flywheel in the right part is connected with a slider and a guide bar in the left part through a connecting part, and the right part and the left part are fixedly mounted on the base. The abrasion tester overcomes the defects of the prior art, can carry out a knee prosthesis abrasion test which can simulate the motion characteristics of the knee joint of the human body, is used in a knee prosthesis surface abrasion prediction test and a new prosthesis profile abrasion test, and provides technique and data for total knee replacement. The abrasion tester has high practical value and a broad application prospect in the fields of biomedicine and medical equipment manufacturing.

Description

Technical field: [0001] The invention relates to a six-degree-of-freedom parallel and swing guide rod mechanism combined knee joint replacement prosthesis wearing machine, which belongs to the field of biomedicine and medical device manufacturing. Background technique: [0002] The knee joint is the largest, most important, and most complex joint in the human body. It plays the role of supporting body weight, balancing, transmitting and coordinating movements; at the same time, it also has the functions of joint lubrication and mild injury repair. However, due to the exposed nature of the knee joint, it is extremely vulnerable to injury. The injured joint is restored to knee function by total knee replacement surgery. [0003] People with knee joint injuries come from fatigue injuries (elderly people), traffic accidents, extreme sports, and natural disasters (such as earthquakes, hurricanes, etc.). The process of modernization and better living conditions have led to an ag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56
Inventor 黄荣瑛朱君郑红光郑海东
Owner BEIHANG UNIV
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