发明名称 |
APPARATUS, SYSTEMS AND METHODS UTILIZING PLETHYSMOGRAPHIC DATA |
摘要 |
Disclosed are apparatus, systems and methods utilizing attributes of the cardiac signal to calibrate/normalize components of the plethysmographic (PG) waveform indicating changes in venous and arterial blood volume. In the time-domain, amplitudes of respiratory-induced variations of the DC and AC components of the PG waveform may be calibrated/normalized based on an average amplitude of the PG waveform, e.g., over a respiratory cycle. Similarly, in the frequency domain, respiratory signal strength and side-band signal strength may be advantageously calibrated/normalized based on the strength of the cardiac signal or a harmonic thereof. |
申请公布号 |
EP2434947(A4) |
申请公布日期 |
2015.07.29 |
申请号 |
EP20100781296 |
申请日期 |
2010.05.28 |
申请人 |
YALE UNIVERSITY |
发明人 |
SHELLEY, KIRK, H.;SILVERMAN, DAVID, G. |
分类号 |
A61B5/02;A61B5/0295;A61B5/08;A61B5/1455 |
主分类号 |
A61B5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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