US 12,220,280 B2
Cardiac device
Dominique Chapelle, LeChesnay (FR); Philippe Moireau, LeChesnay (FR); Mathieu Pernot, Paris (FR); and Mickaël Tanter, Paris (FR)
Assigned to Institut National De Recherche En Informatique Et En Automatique, LeChesnay (FR); and Institut National De La Sante Et De La Recherche Medicale, Paris (FR)
Appl. No. 17/632,128
Filed by Institut National De Recherche En Informatique Et En Automatique (INRIA), LeChesnay (FR); and Institut National De La Sante Et De La Recherche Medicale, Paris (FR)
PCT Filed Jul. 29, 2020, PCT No. PCT/FR2020/051396
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/019186, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 1908859 (FR), filed on Aug. 1, 2019.
Prior Publication US 2022/0273268 A1, Sep. 1, 2022
Int. Cl. A61B 8/00 (2006.01); A61B 8/08 (2006.01); G01S 7/52 (2006.01)
CPC A61B 8/485 (2013.01) [A61B 8/0883 (2013.01); A61B 8/5223 (2013.01); A61B 8/543 (2013.01); G01S 7/52042 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A cardiac device comprising:
a transmitter arranged to transmit at least one transmission wave;
a probe arranged to measure a plurality of shear waves caused by the at least one transmission wave;
a detector arranged to detect a systole phase in an electrocardiographic signal; and
at least one a processor configured to determine, during at least one cardiac cycle, a propagation velocity of the plurality of shear waves caused by the at least one transmission wave in several directions towards a heart of a patient, to determine, among said plurality of shear waves and using the detector, a shear wave which has a maximum propagation velocity during the systole phase, and to derive an active cardiac stress from said maximum propagation velocity.