发明名称 |
METHODS AND APPARATUS FOR CALIBRATING RESPIRATORY EFFORT FROM PHOTOPLETHYSMOGRAPH SIGNALS |
摘要 |
Breathing effort of a patient, as determined (for example) from a photoplethysmograph ("PPG") signal from the patient, can be calibrated in relation to air pressure in the patient's respiratory system. This calibration can be done by subjecting the patient to varying amounts of breathing resistance; and for each such amount, concurrently measuring (1) air pressure in the respiratory system (e.g., in the oral/nasal cavity) and (2) breathing effort (from the PPG signal). Use can be made of this calibration, e.g., during a sleep study of the patient. During such a study, breathing effort, again determined from the PPG signal and occurring, for example, during an apneic event of the patient, can be used to infer air pressure in the respiratory system by using the above calibration. |
申请公布号 |
WO2011135440(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
WO2011IB00906 |
申请日期 |
2011.04.27 |
申请人 |
NELLCOR PURITAN BENNETT IRELAND;ADDISON, PAUL, STANLEY;WATSON, JAMES, NICHOLAS |
发明人 |
ADDISON, PAUL, STANLEY;WATSON, JAMES, NICHOLAS |
分类号 |
A61B5/087;A61B5/1455 |
主分类号 |
A61B5/087 |
代理机构 |
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