Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for providing feedback- controlled muscle stimulation

CA 1234603 A · Owner: Wright State University · Inventors: Glaser, Roger M.; Phillips, Chandler A.; Petrofsky, Steven H.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method and apparatus for stimulating a human muscle to produce a controlled response against a dynamic load. Muscle stimulation is achieved through a pair of alternately pulsed stimulation signals which are applied across different pairs of stimulation electrodes. A pulse generating circuit generates the pulsed stimulating signals at a frequency of about 60 Hz across each electrode pair. A position sensor provides a feedback signal to a computer, which in turn generates a stimulation control signal. The pulse generating circuit uses the stimulation control signal for adjusting the amplitude of the stimulation pulses. The pulse width of the stimulation pulses is disclosed as being about …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted March 29, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 29, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 1983
GrantedMarch 29, 1988
Term endedMarch 29, 2005
Patent numberCA 1234603 A
Classification (IPC)A61N1/36 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedAug 25, 1983Patent grantedMarch 29, 1988Term endedMarch 29, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.