Active-passive type ankle joint prosthesis and movement mode thereof

A movement method and ankle joint technology, applied in prosthesis, medical science, artificial legs, etc., can solve the problems of active ankle joint prosthesis difficulty, single degree of freedom of ankle joint prosthesis, cumbersome and other problems, meet the requirements of normal walking, meet normal Effect of walking request

Active Publication Date: 2013-03-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although their prosthetics can provide the energy required for human gait, their ankle prosthetics are also single-degree-of-freedom
[0004] So far, motor drive is still an effective and m...

Method used

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  • Active-passive type ankle joint prosthesis and movement mode thereof
  • Active-passive type ankle joint prosthesis and movement mode thereof
  • Active-passive type ankle joint prosthesis and movement mode thereof

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Experimental program
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Embodiment Construction

[0026] In the following, the concept, specific structure and technical effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the purpose, features and effects of the present invention.

[0027] Such as figure 1 As shown, the active and passive dual degree of freedom ankle joint prosthesis of the present invention includes a carbon fiber foot plate 9, a motor 4, a reducer 3, a motor mount 2, a driving pulley 19, a driven pulley 15, a conveyor belt 1, a ball screw 16, Energy storage spring 13, carbon fiber tube 18, carbon fiber tube support base 5, joint left support base 7, joint right support base 24, and foot plate connection base 8. The motor fixing base 2 fixes the motor and the ball screw 15 respectively, and the fixing base 2 is connected to the carbon fiber tube 18 through a movable pin. The energy storage springs 13 are respectively fixed between the ball screw drive nut 14 and the joint bearing connect...

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Abstract

The invention discloses an active-passive type two-degrees-of freedom ankle joint prosthesis, comprising a carbon fiber energy storage sole, a motor, a speed reducer, a motor fixing supporting seat, a belt pulley transmission device, a carbon fiber pipe, a ball screw, an energy storage springs, joint bearings, energy storage rubber rings and joint supporting seats, wherein the carbon fiber energy storage sole is connected with the carbon fiber pipe through the joint supporting seats; the motor fixing supporting seat is connected with the carbon fiber pipe through an active pin; the motor is fixedly arranged on one end of the motor fixing supporting seat; the ball screw is fixedly arranged on the other end of the motor fixing supporting seat; two ends of the motor fixing supporting seat are connected by the belt pulley transmission device; the energy storage springs areis connected with a ball screw nut; and the energy storage rubber rings are connected with the joint bearings and the joint supporting seats through a shaft. The ankle joint prosthesis provided by the invention not only can completely provide required energy for human gait, but also can adapt to various landforms; in addition, the ankle joint prosthesis can completely imitate movement angles of a human ankle joint on a sagittal plane or a coronal plane; and therefore, the normal walking requirement of an amputation patient can be satisfied better.

Description

Technical field [0001] The invention relates to a human body prosthesis, in particular to an active and passive type two-degree-of-freedom ankle joint prosthesis which can simulate the driving and energy storage functions of the human ankle joint muscle group and its movement mode. Background technique [0002] The prosthesis is an essential device in the daily life of amputees. Take the lower limb ankle joint prosthesis as an example. Its main function is to replace the incomplete limb and assist the patient to walk normally. The human ankle and foot not only have active driving function, but also have energy storage and cushioning functions. The most ideal ankle joint prosthesis should be able to fully simulate the active driving and energy storage characteristics of the human ankle and foot, and the gait characteristics of the human ankle joint. However, the vast majority of ankle joint prostheses on the market so far are passive. Although the introduction of the carbon fib...

Claims

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Application Information

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IPC IPC(8): A61F2/66A61F2/70
Inventor 殷跃红张健军朱剑英
Owner SHANGHAI JIAO TONG UNIV
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