A cardiac electrotherapy device comprises an elongated elastic lead body having a distal electrode adapted to be connected to the heart; lead body including a sensor portion at a location adapted to undergo deformations responsive to heart muscles contractions when the lead body is connected to...http://www.google.es/patents/US5693074?utm_source=gb-gplus-sharePatente US5693074 - Cardiac electrotherapy device for cardiac contraction measurement
Cardiac electrotherapy device for cardiac contraction measurement
