A system for determining a patient's posture by monitoring heart sounds. The system comprises an implantable medical device that includes a sensor operable to produce an electrical signal representative of heart sounds, a sensor interface circuit coupled to the sensor to produce a heart sound signal,...http://www.google.fr/patents/US8012098?utm_source=gb-gplus-shareBrevet US8012098 - Determining a patient's posture from mechanical vibrations of the heart
Determining a patient's posture from mechanical vibrations of the heart
