Implantable coronary perfusion monitoring device
First Claim
1. 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, anda coronary perfusion index calculating unit configured to determine said coronary perfusion index CPI as (t·
DPP)/SAP.
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Accused Products
Abstract
An implantable coronary perfusion monitoring device for in-vivo determination of a coronary perfusion index (CPI) indicative of the coronary perfusion of a heart has a time measurement unit to determine a blood pressure reflection wave measure t indicating the timely position in the heart cycle of the maximum of a reflected blood pressure wave and 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 diastolic peak pressure measurement unit adapted to determine a diastolic peak blood pressure measure DPP related to diastolic aortic peak pressure and a systolic arterial pressure measurement unit adapted to determine a systolic arterial blood pressure measure SAP related to systolic arterial pressure, and a coronary perfusion index calculating unit adapted to determine said coronary perfusion index CPI as (t·DPP)/SAP.
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Citations
24 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification