Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (17): 3044-3046.doi: 10.3969/j.issn.1673-8225.2011.17.003

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Design of powered bionic ankle prosthesis

Zhao Gai-ping, Cao Shuai, Shang Kun, Ruan Chao, Zhao Wei-qin, Wang Zhen-xiang, Guo Dan   

  1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai  200093, China
  • Received:2010-11-15 Revised:2011-02-14 Online:2011-04-23 Published:2011-04-23
  • Contact: Zhao Gai-ping☆, Doctor, Lecturer, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China zgp_06@yahoo.com.cn
  • About author:Zhao Gai-ping☆, Doctor, Lecturer, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China zgp_06@yahoo.com.cn
  • Supported by:

    College Student Innovation Project of Shanghai City, No. SH091025246*

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Abstract:

BACKGROUND: Ankle prosthesis has been researched as a focus point for improving living quality of disabled persons suffers from lower limb.
OBJECTIVE: To design and manufacture the powered bionic ankle prosthesis based on biomechanics, anatomy and physiology theories.
METHODS: According to bionics principle, the stress characteristics and physiological functions of the human ankle joint during gait analysis, mechanics model of ankle prosthesis with two-degree-of-freedom motion is established and mechanical structure and control system of ankle prosthesis are designed. The bionic ankle prosthesis, which includes bionic ankle system, auxiliary devices, data control and data acquisition systems, can do flexion and extension in the sagittal plane.
RESULTS AND CONCLUSION: A system testing was performed based on the ankle prosthesis device. The normal human ankle walking gait data as the input signal, and the step motor as power-driven to simulate the movement of the ankle joint, the angle output data were obtained by data acquisition system. These results showed that the bionic ankle prosthesis could move following the input angle data, and the expected target that bionic ankle followed the movement was achieved.

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