Method of continuously monitoring blood pressure

Details Method of continuously monitoring blood pressure Method of continuously monitoring blood pressure

1992-11-20

1993-11-16

Howell, Kyle L.

Surgery

Truss

Pad

128687, A61B 502

Patent

active

052614123

ABSTRACT:
A method, for use in a non-invasive blood pressure monitoring system, of operating a tissue stress sensor at an off-optimum arterial applanation state. The system uses a stress sensor including a stress sensitive element for detecting stress of tissue overlying an artery of interest. The tissue stress sensor is placed in communication with tissue overlying the artery of interest and at least one electrical signal is obtained therefrom representing stress data across the length of the stress sensitive element. The data represents stress datum communicated to preselected portions of the stress sensitive element. From the stress datum, various techniques are used to determine the optimum applanation state and the actual applanation state. A waveform scaling factor function is created which compensates for the errors associated with operating the tissue stress sensor at an off-optimum applanation state. Thus, the disclosed method provides the benefits associated with operating a tissue stress sensor at an off-optimum state without sacrificing measurement accuracy.

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