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Special Section Technical Briefs

A Portable Soft Hand Exerciser With Variable Elastic Resistance for Rehabilitation and Strengthening of Finger, Wrist, and Hand1

[+] Author and Article Information
Yuchun Liu

Department of Medicine,
Yong Loo Lin School of Medicine,
National University of Singapore,
119228, Singapore

Chen-Hua Yeow

Department of Biomedical Engineering,
Faculty of Engineering,
National University of Singapore,
117575, Singapore
Singapore Institute for Neurotechnology (SINAPSE),
National University of Singapore,
117456, Singapore
Advanced Robotics Center,
Faculty of Engineering,
National University of Singapore,
117580, Singapore

Accepted and presented at The Design of Medical Devices Conference (DMD2015), April 13–16, 2015, Minneapolis, MN, USA.

Manuscript received March 3, 2015; final manuscript received March 17, 2015; published online July 16, 2015. Editor: Arthur Erdman.

J. Med. Devices 9(3), 030920 (Sep 01, 2015) (3 pages) Paper No: MED-15-1076; doi: 10.1115/1.4030555 History: Received March 03, 2015; Revised March 17, 2015; Online July 16, 2015

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Figures

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Fig. 1

Mechanical testing setup using an Instron machine, fitted with 1- or 3-prong hooks. Both ends of the device were mounted onto the hooks and pulled at a rate of 1 mm/s (far right). The load cell detects the tensile loads.

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Fig. 2

Simulated finger abduction, single finger stretching and hand grasping–pulling exercises using the Instron machine fitted with 1- or 3-prong hooks

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Fig. 3

Changes in tensile load with increasing extension at different abduction levels during simulated finger abduction

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Fig. 4

Changes in tensile load with increasing extension at different resistance levels during simulated finger stretch

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Fig. 5

Changes in tensile load with increasing extension at different resistance levels during simulated hand grasping–pulling

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