Title:
METHOD FOR MEASURING CARDIOVASCULAR AND RESPIRATORY PARAMETERS BASED ON MULTI-WAVELENGTH PHOTOPLETHYSMOGRAPHY
Document Type and Number:
WIPO Patent Application WO/2017/107921
Kind Code:
A1
Abstract:
Accurate and effective methods for measuring cardiovascular and respiratory parameters are provided. The method for deriving a depth-specific photoplethysmography (PPG) signal from multi-wavelength PPG signals includes choosing light wavelength combinations, calibrating a multi-layer light-tissue interaction model referring to a physiological signal, and generating the depth-specific PPG signal from the multi-wavelength PPG signals based on the calibrated light-tissue interaction model. The disclosed method for cuff-less blood pressure measurement includes recording a physiological signal and multi-wavelength PPG signals of a predetermined body part, deriving the depth-specific PPG signal reflecting the arterial blood volume with the physiological signal as a reference, calculating the pulse transit time (PTT) from the physiological signal and the derived arterial blood PPG signal, and calculating the blood pressure from the calibrated PTT and blood pressure relationship.
Inventors:
ZHAO NI (CN)
ZHANG YUANTING (CN)
LIU JING (CN)
DING XIAORONG (CN)
DAI WENXUAN (CN)
LI YAO (CN)
YUAN SHANSHAN (CN)
ZHANG YUANTING (CN)
LIU JING (CN)
DING XIAORONG (CN)
DAI WENXUAN (CN)
LI YAO (CN)
YUAN SHANSHAN (CN)
Application Number:
PCT/CN2016/111298
Publication Date:
June 29, 2017
Filing Date:
December 21, 2016
Export Citation:
Assignee:
UNIV HONG KONG CHINESE (CN)
International Classes:
A61B5/0205; A61B5/0295
Foreign References:
| CN101484065A | 2009-07-15 | |||
| CN103347439A | 2013-10-09 | |||
| CN101002673A | 2007-07-25 | |||
| CN101564290B | 2011-05-25 | |||
| US20090234245A1 | 2009-09-17 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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