US 11,998,751 B2
Method and device for processing a cardiac signal
Elodie Marie, Vienne en Bessin (FR); and Luca Vitali, Strambino (IT)
Assigned to SORIN CRM SAS, Clamart (FR)
Filed by SORIN CRM SAS, Clamart (FR)
Filed on Dec. 3, 2020, as Appl. No. 17/110,904.
Claims priority of application No. 1913710 (FR), filed on Dec. 4, 2019.
Prior Publication US 2021/0170183 A1, Jun. 10, 2021
Int. Cl. A61B 5/00 (2006.01); A61B 5/287 (2021.01); A61B 5/29 (2021.01); A61B 5/318 (2021.01); A61N 1/00 (2006.01); A61N 1/37 (2006.01)
CPC A61N 1/3712 (2013.01) [A61B 5/287 (2021.01); A61B 5/29 (2021.01); A61B 5/318 (2021.01)] 18 Claims
OG exemplary drawing
 
1. A method for processing a cardiac signal represented as a function of time, the method comprising:
providing a number n of different threshold levels Ni, with i=1 to n, and n being greater than or equal to three;
detecting, from a given time T and per threshold level Ni, at least two successive intersections of the cardiac signal with the different threshold levels Ni, considering a crossing per increasing and/or decreasing value of the cardiac signal with the threshold level Ni;
determining at least one statistical parameter for the cardiac signal from the at least two successive intersections of the cardiac signal with the at least three different threshold levels Ni, wherein determining the at least one statistical parameter comprises determining a period of the cardiac signal, and wherein the at least one statistical parameter is indicative of an arrhythamia; and
providing, based on the at least one statistical parameter, a defibrillation shock to a patient.