Design of a Mechanical Exoskeleton System for Improving Hand-Gripping Force

De Yi Zheng; Min Luo; Shan Shan Yang

doi:10.4028/www.scientific.net/AMR.663.708

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 663Design of a Mechanical Exoskeleton System for...

Design of a Mechanical Exoskeleton System for Improving Hand-Gripping Force

Abstract:

Patients may lose part of the hand-gripping force, because of the diseases of stroke, carpal tunnel syndrome, nerve damage etc, which lead to greatly inconvenience during their daily life. The research work in this area has been really investigated in the world, and is with significant importance in medical and military areas. A mechanical exoskeleton system is designed in this project for improving hand-gripping force of these patients. The designed mechanical exoskeleton system in this project includes five parts: exoskeleton framework, finger motion intention detecting system, extra force output system, joints’ angle holding system and central construe system. In this study, titanium alloy are eventually adopted as the material of the exoskeleton framework after the mechanical analysis. A contact type sensor system for detecting finger motion intention, gripping or releasing object is also adopted in this project. Titanium-Nickel (Ti-Ni) shape memory alloy (SMA) plates are used here to provide extra 2N force for helping patients grip an object under 140g. A Ti-Ni plate based joint lock system has also been designed here for holding the angles of fingers’ joints.

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Periodical:

Advanced Materials Research (Volume 663)

Pages:

708-712

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.663.708

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Online since:

February 2013

Authors:

De Yi Zheng, Min Luo, Shan Shan Yang

Keywords:

Hand-Gripping, Mechanical Exoskeleton System, Shape Memory Alloy (SMA)

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References

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