Cardiac device

US12220280B2 · kind B2 · utility

Assignees

• INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE (INRIA) · FR
• Institut National de la Sante et de la Recherche Medicale (INSERM) · FR

Inventors

• Dominique Chapelle · Paris, FR
• Philippe Moireau · Chesnay, FR
• Mathieu Pernot · Paris, FR
• Mickael Tanter · Paris, FR

Key dates

• Filing date: Jul 29, 2020
• Grant date: Feb 11, 2025
• Expiry date: Apr 20, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/52042
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A cardiac device comprises a transmitter (10) arranged to transmit at least one wave, a probe (12) arranged to measure a shear wave caused by a wave coming from the transmitter (10), a detector (14) arranged to detect a systole phase in an electrocardiographic signal, and an estimator (16) arranged to determine, during at least one cardiac cycle, the propagation speed of a plurality of shear waves caused by the transmission of waves in several directions towards the heart of a patient, to determine using the detector (14) that which has a maximum propagation speed during the systole phase, and to derive an active cardiac stress response therefrom (160).