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Expired Canadian patentCanada

Command atrial cardioverter

CA 1074872 A · Owner: Mieczyslaw, Mirowski · Inventors: Mower, Morton M.; Langer, Alois A.; Mirowski, Mieczyslaw

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An externally controlled implantable electronic device for delivering a cardioverting pulse of energy to the atrium of an ailing heart is provided. The device is adapted to be activated only upon the manual intervention of an operator who may be the wearer, when it is desired to effect atrail defibrillation. A receiver is arranged to receive commands from outside the skin and activate the device. A charging circuit delivers to a storage circuit an amount of energy sufficient to convert an abnormal supra-ventricular rhythm to a normal sinus rhythm. A controllable switch causes this energy to be discharged into the atrium through delivery electrodes to effect defibrillation.

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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 April 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 1, 1980
Term endedApril 1, 1997
Patent numberCA 1074872 A
Classification (IPC)A61N1/36

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 1, 1980Term endedApril 1, 1997

Sources & verification

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