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SYSTEM FOR CALIBRATING A PTT-BASED BLOOD PRESSURE MEASUREMENT USING ARM HEIGHT
专利权人:
发明人:
Devin McCombie,Marshal Dhillon,Matt Banet
申请号:
US14214464
公开号:
US20140200415A1
申请日:
2014.03.14
申请国别(地区):
US
年份:
2014
代理人:
摘要:
The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: (i) first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patients heart and (ii) at least three motion-detecting sensors positioned on the forearm, upper arm, and a body location other than the forearm or upper arm of the patient. Each motion-detecting sensor generates at least one time-dependent motion waveform indicative of motion of the location on the patients body to which it is affixed. A processing component, typically worn on the patients body and featuring a microprocessor, receives the time-dependent waveforms generated by the different sensors and processes them to determine: (i) a pulse transit time calculated using a time difference between features in two separate time-dependent waveforms, (ii) a blood pressure value calculated from the time difference, and (iii) a motion parameter calculated from at least one motion waveform.
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