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Optimization and application of a wrap-spring clutch to a dynamic knee-ankle-foot orthosis
S E Irby1, K R Kaufman, R W Wirta
1Biomechanics Laboratory, Mayo Clinic, Rochester, MN 55905, USA.
IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
|July 3, 1999
Abstract:
A dynamic knee-brace system (DKBS) has been designed which provides stance phase stability and swing phase freedom. A wrap-spring clutch controls knee flexion. Clutch optimization was performed minimizing clutch length. Kinematic tests on a normal subject using the DKBS document nearly normal dynamic knee flexion during swing (38 degrees versus 53 degrees for normal).