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Expired Canadian patentCanada

Apparatus and method for sensing cardiac function

CA 2235652 C · Owner: Lifecor, Inc. · Inventors: Kaib, Thomas E.

CIPO record

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Abstract From the Canadian patent

An apparatus and method for sensing cardiac function in a patient particularly, adaptable to being worn by an ambulatory patient. Including sensor to receive ECG signals in at least one plane of the patient chest area and an analyzer to derive a signal, representation of the electrical axis of the patient heart. Changes in the signal representation can be evaluated to include heart condition. The axis analyzer and other ECG information can be used to generate rate information used in conjunction with the heart axis signal representation. Incidence of phase zero-crossing of the heart axis signal representation and the magnitude peaks can be used to indicate and distinguish various heart …

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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

  • Filed April 23, 1998 and granted July 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 23, 1998
GrantedJuly 10, 2001
Term endedApril 23, 2018
Patent numberCA 2235652 C
Classification (IPC)A61B5/04 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedApril 23, 1998Patent grantedJuly 10, 2001Term endedApril 23, 2018

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