MONITORING SYSTEM
First Claim
1. A system for non-invasive monitoring of cardiac activity in a human or animal, the system comprising:
- a radiation source,a driver for the radiation source,a radiation detector, anda processor for processing data derived from the detected radiation, in which the processor is adapted to determine pulse peaks and troughs and to calculate area under a pulse peak to provide a real time cardiac output indicator data.
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Accused Products
Abstract
A system and method for non-invasive monitoring of cardiac activity in a human or animal is disclosed. A radiation source directs radiation through a patient site, and a detector detects radiation after passing through a patient tissue. A processor processes data derived from the detected radiation, determining pulse peaks and troughs and calculating area under a pulse peak to provide a real time cardiac output indicator. The radiation wavelength is on a haemoglobin spectral isosbestic point, not influenced by changes in SpO2 concentration. The processor performs numerical integration of pulse data between troughs, and wherein said integration is performed per pulse. Preferably, the processor monitors trends, thus providing very useful information and reducing need for calibration.
3 Citations
25 Claims
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1. A system for non-invasive monitoring of cardiac activity in a human or animal, the system comprising:
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a radiation source, a driver for the radiation source, a radiation detector, and a processor for processing data derived from the detected radiation, in which the processor is adapted to determine pulse peaks and troughs and to calculate area under a pulse peak to provide a real time cardiac output indicator data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for non-invasive monitoring of cardiac activity in a human or animal, the method comprising:
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a radiation source directing radiation through a patient site, a detector detecting radiation after passing through a patient tissue, and a processor processing data derived from the detected radiation, in which the processor determines pulse peaks and troughs and calculates area under a pulse peak to provide a real time cardiac output indicator. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A computer readable medium comprising software code adapted to perform, when executed by a digital processor, a method comprising the steps of:
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receiving data from a detector which detects radiation after passing through a patient tissue, and processing data derived from the detected radiation, to determine pulse peaks and troughs and to calculate area under a pulse peak to provide a real time cardiac output indicator.
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Specification