Patent ID: 8690787

Claim:
Implantable coronary perfusion monitoring device for in-vivo determination of a coronary perfusion index (CPI) indicative of the coronary perfusion of a heart, said device comprising: a systolic arterial pressure measurement unit configured to determine a systolic arterial blood pressure measure SAP related to systolic arterial pressure; a diastolic peak pressure measurement unit configured to determine a diastolic peak blood pressure measure DPP related to diastolic aortic peak pressure representing a reflected blood pressure wave; a time measurement unit configured to determine a blood pressure reflection wave measure t indicating a timely position in the heart cycle of the maximum of a reflected blood pressure wave in a time period starting at a preset point of time in systole and ending at a local maximum of blood pressure following aortic valve closure, and a coronary perfusion index calculating unit configured to determine said coronary perfusion index CPI as (t·DPP)/SAP.