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Expired Canadian patentCanada

Cardiac output measurement with metabolizable analyte containing fluid

CA 2256915 C · Owner: Cardiox Corporation · Inventors: Khalil, Gamal E.; Eggers, Philip E.; Huntley, Scott P.

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

Cardiac output is measured utilizing a catheter in conjunction with the indicator dilution technique. Non-thermal analyte-containing fluid is used as the injectate. This fluid is biocompatible with and metabolizable within the body of the patient. An analyte concentration sensor is mounted upon the catheter and located downstream within the bloodstream from the port from which the analyte-containing fluid is expressed. Because of the matching of rapid concentration sensor response with an analyte-containing fluid which is metabolizable the measurement of cardiac output may be carried out as often as about one to three minutes in conjunction with an infusion internal substantially less than …

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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 December 22, 1998 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 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.
FiledDecember 22, 1998
GrantedMarch 11, 2003
Term endedDecember 22, 2018
Patent numberCA 2256915 C
Classification (IPC)A61B5/02 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedDec 22, 1998Patent grantedMarch 11, 2003Term endedDec 22, 2018

Sources & verification

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