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Expired Canadian patentCanada

Electrode system for ventricular defibrillation and method for its use

CA 1091304 A · Owner: Mirowski, Mieczyslaw · Inventors: Langer, Alois A.; Heilman, Marlin S.; Reilly, David M.

CIPO record

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

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Abstract From the Canadian patent

An implantable electrode system for connection to a pulse generator for cardioverting a malfunctioning heart by discharging electrical energy through the heart has a first cardioverting electrode shaped for association with the heart in the region of the base of the heart and a second cardioverting electrode shaped for association with the heart in the region of the apex of the heart, the second electrode having a first surface which is conductive and of a size and shape so as to conform to the outer contour of the heart in the region of its apex, and so as to extend around at least a portion of the apex of the heart and a second, electrically insulated surface adapted to face away from the …

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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 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.
FiledSeptember 29, 1976
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091304 A
Classification (IPC)A61N1/04 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedSep 29, 1976Patent grantedDec 9, 1980Term endedDec 9, 1997

Sources & verification

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