Surgery – Truss – Pad
Patent
1995-06-21
1997-02-18
Nasser, Robert L.
Surgery
Truss
Pad
128681, 128687, 128682, A61B 0500
Patent
active
056033290
ABSTRACT:
The multi-functional blood pressure monitor includes input unit for entering a value of blood pressure for calibration; unit for detecting a time interval detection reference point on an aortic pulse wave, unit for detecting a peripheral blood pulse wave as it appears later than the aortic pulse wave, unit (CPU) for measuring the pulse wave propagation time on the basis of the detection outputs from the unit for detecting a time interval detection reference point and the unit for detecting a peripheral blood pulse wave, first computing unit (CPU) for computing the values of parameters .alpha. and .beta. using the two values of blood pressure that have been entered for calibration and the two pulse wave propagation times that have been measured for calibration, second computing unit (CPU) for computing blood pressure from a measured pulse wave propagation time and the values of parameters .alpha. and .beta., and display for presenting both the computed blood pressure and the value of parameter .alpha. which serves as an index for arteriosclerosis.
REFERENCES:
patent: 4907956 (1990-03-01), Schmid et al.
patent: 5237997 (1993-08-01), Gruebel et al.
"On the Pressure-Volume Relationship in Circulatory Elements", Medical and Biological Engineering & Computing, Hardy et al., Sep. 1982, pp. 565-570.
"The Velocity of the Pulse Wave in Man", J. C. Bramwell et al., Feb. 4, 1992, pp. 298-306.
Hosaka Hidehiro
Kasuya Hiromitsu
Nakaya Takashi
Sugo Yoshihiro
Tanaka Rie
Nasser Robert L.
Nihon Kohden Corporation
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