Surgery – Truss – Pad
Patent
1995-03-30
1998-01-20
Nasser, Robert L.
Surgery
Truss
Pad
128682, 128687, A61B 500
Patent
active
057092125
ABSTRACT:
A blood pressure measuring device includes: a memory for storing a standard constant .alpha.; an input means for inputting a correcting blood pressure value; a time interval reference point detection section for detecting a time interval detection reference point in a pulse wave on the side of aortae; a pulse wave detection section for detecting a pulse wave on the side of peripheral blood vessels appearing with a time lag with respect to the pulse wave on the side of aortae; a pulse wave propagation time measurement section for measuring a pulse wave propagation time based on respective detected outputs from the time interval detection reference point detection means and the pulse wave detection means; an operation means for determining a constant .beta. using the blood pressure value for calibration, pulse wave propagation time, and standard constant .alpha. inputted for calibration; an operation means for calculating the blood pressure value from the pulse wave propagation time measured at a predetermined time interval for measuring a circadian blood pressure fluctuation, and the standard constants .alpha., .beta.; a memory for consecutively storing the measured pulse wave propagation time and the blood pressure value calculated from the pulse wave propagation time; and an external output connector for outputting at least the blood pressure value and pulse wave propagation time data as a result of the circadian blood pressure fluctuation measurement.
REFERENCES:
patent: 4907596 (1990-03-01), Schmid et al.
patent: 5237997 (1993-08-01), Greubel et al.
patent: 5564427 (1996-10-01), Aso et al.
patent: 5603329 (1997-02-01), Hosaka et al.
Sohma Takeshi
Sugo Yoshihiro
Nasser Robert L.
Nihon Kohden Corporation
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