Wireless wearable controller for upper-limb neuroprosthesis

doi:10.1682/JRRD.2008.03.0037

Wireless wearable controller for upper-limb neuroprosthesis

2009-01-01

12

PRE

AI

W

Wheeler, Christa A. *

P

Peckham, P. Hunter

DOI：10.1682/JRRD.2008.03.0037

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The objective of this project was to develop a wireless, wearable joint angle transducer to enable proportional control of an upper-limb neuroprosthesis by wrist position. Implanted neuroprostheses use functional electrical Stimulation to provide hand grasp to individuals with tetraplegia. Wrist position is advantageous for control because it augments the tenodesis grasp and can be implemented bilaterally. Recently developed, fully implantable multichannel stimulators are battery-powered and use wireless telemetry to control stimulator outputs. An external wrist controller was designed for command signal acquisition for people with cervical-level spinal cord injury to control this implantable stimulator. The wearable controller, which uses gigantic magnetoresistive sensing techniques to measure wrist position, is worn on the forearm. A small dime-sized magnet is fixed to the back of the hand. Results indicate that the device is a feasible control method for an upper-limb neuroprosthesis and Could be reduced to a small wristwatch size for cosmesis and easy donning.

Keyword:

control

functional electrical stimulation

gigantic magnetoresistance

hand grasp

joint angle sensor

neuroprosthesis

rehabilitation

spinal cord injury

tetraplegia

wireless

wrist angle

Wireless wearable controller for upper-limb neuroprosthesis

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