ISMAIL BATKIN,SAIF AHMAD,MIODRAG BOLIC,VOICU GROZA,HILMI R DAJANI,MOHAMAD FOROUZANFAR
申请号：
GB201207717
公开号：
GB2490594A
申请日:
2012.05.02
申请国别(地区):
GB
年份:
2012
代理人:
摘要：
Apparatus, method, and software for electrocardiogram-assisted nonÂinvasive arterial blood pressure and stiffness measurement is disclosed including brachial cuff with dry flexible electrodes, control box with rigid electrodes, and associated hardware/software. Cuff is wrapped around upper arm while electrodes on device are touched with fingers of other hand. Device acquires simultaneous ECG/oscillometric data during cuff deflation. Processing unit determines ECG R-peak positions to isolate arterial pulses and calculate pulse transit time. Change in pulse amplitude as function of cuff pressure is used for constructing oscillometric envelope and calculating blood pressure using empirical coefficients. The maximum of the oscillometric envelope is used for determining mean blood pressure. Change in pulse transit time as function of cuff pressure is used independently for constructing pulse transit time envelopes and finding blood pressure with/without empirical coefficients. The pulse transit time between an ECG R-peak and maximum slope on an arterial pulse wave may be calculated to obtain the pulse transit time envelope. The maximum of the pulse transit time envelope is used for determining mean blood pressure empirical coefficients on the pulse transit time envelope may be used for evaluating diastolic and systolic blood pressure. The maximum of a pulse transit time envelope obtained by measuring pulse transit time between ECG R-peaks and bottom of arterial pulse waves may be used for evaluating diastolic blood pressure. The maximum of a pulse transit time envelope obtained by measuring pulse transit time between ECG R-peaks and top of arterial pulse waves may be used for evaluating systolic blood pressure. Fusion algorithm combines results for robust blood pressure and vessel stiffness evaluation. Device sends physiological information to personal computer/smartphone wirelessly, for further analysis. Computer/smartphone transmits information to third party for pati
