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Expired Canadian patentCanada

Method for processing a series of cardiac rhythm signals (rr) and the use thereof for analysing a cardiac rhythm variability, in particular for assessing a patient's pain or stress

CA 2580758 C · Owner: Centre Hospitalier Regional Universitaire De Lille · Inventors: Logier, Regis; Tavernier, Benoit; Jeanne, Mathieu

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Abstract From the Canadian patent

The inventive method for processing an RR series comprises a plurality of (RR) samples representing time intervals (dti) between two successive hart beats or the inverse (1/dti) of said time intervals consists in selecting (N) (RRi) samples in a main time window having a predetermined length (n) in cutting said main window into (m) subwindows (Fj) in calculating an intermediate parameter (A1) for each subwindow (Fj) on the basis of the (RRi) samples contained in the subwindow (Fj) and in calculating a final parameter as a function of the intermediate parameters (Aj).The invention is used for analysing a cardiac rhythm variability in particular for assessing a patient's pain or stress.

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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 August 9, 2005 and granted December 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 9, 2005
GrantedDecember 3, 2013
Term endedAugust 9, 2025
Patent numberCA 2580758 C
Classification (IPC)—

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2006200820102012201420162018202020222024Application filedAug 9, 2005Patent grantedDec 3, 2013Term endedAug 9, 2025

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