US 11,666,764 B2
System for measurement of impedance cardiography
Mirko Maldari, Paris (FR)
Assigned to Sorin CRM SAS, Clamart (FR)
Filed by SORIN CRM SAS, Clamart (FR)
Filed on Dec. 2, 2020, as Appl. No. 17/109,864.
Claims priority of application No. 1913676 (FR), filed on Dec. 3, 2019.
Prior Publication US 2021/0162218 A1, Jun. 3, 2021
Int. Cl. A61N 1/37 (2006.01); A61N 1/39 (2006.01); A61N 1/365 (2006.01); A61N 1/372 (2006.01)
CPC A61N 1/371 (2013.01) [A61N 1/36521 (2013.01); A61N 1/37235 (2013.01); A61N 1/39622 (2017.08)] 14 Claims
OG exemplary drawing
 
1. A system for measuring impedance, the system comprising:
a first implantable medical device comprising at least one dipole emitter formed by two electrodes connected to a generator, the at least one dipole emitter configured to emit an electrical signal;
a second implantable medical device distinct from the first implantable medical device and comprising at least one dipole receiver formed by two electrodes, the at least one dipole receiver of the second implantable medical device configured to capture the electrical signal emitted by the at least one dipole emitter of the first implantable medical device; and
an analysis module comprising at least one amplifier and at least one envelope detector, the analysis module connected to the at least one dipole receiver, wherein the envelope detector is configured to demodulate the amplitude of the electrical signal captured by the second implantable medical device and the analysis module is configured to treat the demodulated electrical signal to determine a physiological parameter of a patient;
wherein:
one of the first implantable medical device or the second implantable medical device is a subcutaneous implantable cardioverter defibrillator or a subcutaneous loop recorder; and
the other of the first implantable medical device or the second implantable medical device is an implantable endocardial device.