Surgery – Truss – Pad
Patent
1994-10-28
1995-08-08
Cohen, Lee S.
Surgery
Truss
Pad
128687, 128690, A61B 500
Patent
active
054390028
ABSTRACT:
A blood pressure monitor system including a pressure sensor having a press surface and including pressure sensing elements provided in the press surface; a pressing device which presses the pressure sensor against an artery via a body surface so that each pressure sensing element measures a pressure value at the body surface; a first device for determining an optimum pressing force of the pressing device at which a portion of a wall of the artery is flattened under the pressure sensor; a second device for changing pressing forces of the pressing device, and determining a point of inflection of a curve representing a relationship between the changed pressing forces and pressure values measured by the pressure sensor at the body surface; a third device for determining a correction value based on the pressure value of the determined point of inflection; and a blood-pressure determining device for operating the pressing device to maintain the determined optimum pressing force and press the pressure sensor against the artery via the body surface, and continuously determining intra-arterial blood pressure values of the artery by subtracting the correction value from the pressure values measured by the pressure sensor at the body surface.
REFERENCES:
patent: 4799491 (1989-01-01), Eckerle
patent: 4836213 (1989-06-01), Wenzel et al.
patent: 5101829 (1992-04-01), Fujikawa et al.
patent: 5119822 (1992-06-01), Niwa
patent: 5179956 (1993-01-01), Harada et al.
Narimatsu Kiyoyuki
Nishibayashi Hideo
Cohen Lee S.
Colin Corporation
Nassa, Jr. Robert L.
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