System for non-invasive detection of changes of cardiac volumes and aortic pulses
First Claim
1. A method for monitoring cardiac function in an animal or human subject comprising:
- placing a first movement detecting transducer on the torso, said transducer overlying at least part of two diametrically opposed borders of the heart or great vessels;
generating a signal indicative of the movement of the torso portion subtended by the transducer, said signal including a cardiac component comprising at least a sequential ventricular volume waveform or a segmental aortic pressure pulse waveform; and
assessing cardiac function by monitoring changes in said ventricular volume waveform or said aortic pressure pulse waveform.
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Accused Products
Abstract
A method and an apparatus therefor for monitoring cardiac function in an animal or human subject including the steps of: placing a first movement detecting transducer on the torso, said transducer overlying at least part of two diametrically opposed borders of the heart or great vessels; generating a signal indicative of the movement of the torso portion subtended by the transducer, said signal including a cardiac component comprising at least a segmental ventricular volume waveform or a segmental aortic pressure pulse waveform; and assessing cardiac function by monitoring changes in said venticular volume waveform or said aortic pressure pulse waveform.
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Citations
60 Claims
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1. A method for monitoring cardiac function in an animal or human subject comprising:
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placing a first movement detecting transducer on the torso, said transducer overlying at least part of two diametrically opposed borders of the heart or great vessels; generating a signal indicative of the movement of the torso portion subtended by the transducer, said signal including a cardiac component comprising at least a sequential ventricular volume waveform or a segmental aortic pressure pulse waveform; and assessing cardiac function by monitoring changes in said ventricular volume waveform or said aortic pressure pulse waveform. - 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, 25, 26, 27, 28, 29, 30)
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31. An apparatus for monitoring cardiac function in an animal or human subject comprising:
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a first movement detecting transducer means for disposition on the torso of said subject, overlying at least part of two diametrically opposed borders of the heart or great vessels; said transducer means including means for generating a first signal indicative of the movement of the torso portions subtended by the transducer means, said first signal including a cardiac component comprising at least a segmental ventricular volume waveform or a segmental aortic pressure pulse waveform; and means for assessing cardiac function by monitoring changes in said ventricular volume waveform or said aortic pressure pulse waveform. - View Dependent Claims (32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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38. The apparatus of claims or 31 or 33, wherein said assessing means further comprises means for monitoring changes in the slope, derivative of slope, or duration of said at least a segmental ventricular volume waveform or a segmental aortic pressure pulse waveform.
Specification