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Expired Canadian patentCanada

P-wave control, r-wave inhibited ventricular stimulation device

CA 1091301 A · Owner: Medcor Inc. · Inventors: Thaler, Sherwood S.

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

Abstract of the Disclosure, A heart pacer is presented wherein detection of P-waves from the wave complex is used to control the rate of ventricular stimulation by the pacer, where the control of the rate of the pacer (or the escape interval of the pacer) includes decreasing rates and may also include increasing rates. The pacer of the preferred embodiment is a demand pacer of the R-wave inhibited variety. The circuitry is capable of being implanted within the body of the patient as well as being employed in an external manner.

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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.
FiledAugust 29, 1977
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091301 A
Classification (IPC)A61N1/36 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 29, 1977Patent 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.