Electronic sphygmomanometer

Details Electronic sphygmomanometer Electronic sphygmomanometer

1978-11-22

1981-06-16

Michell, Robert W.

Surgery

Truss

Pad

128681, A61B 502

Patent

active

042731364

ABSTRACT:
A blood pressure measurement system comprises a determination means for determining whether a cuff pressure is increasing for preparation purposes or decreasing for measurement purposes. The determination means includes a comparator for comparing the current cuff pressure with the last cuff pressure, and detection means for detecting whether a difference between the current cuff pressure and the last cuff pressure is smaller than a predetermined value. Another determination means is provided for detecting whether the cuff pressure is first increased to a desired level higher than systolic pressure of a person to be measured. A reset means is provided for automatically resetting the system when the cuff pressure is decreased to a predetermined level after completion of measurement.

REFERENCES:
patent: 3939824 (1976-02-01), Arreson et al.
patent: 4009709 (1977-03-01), Link et al.
patent: 4058117 (1977-11-01), Kaspari et al.
patent: 4105021 (1978-08-01), Williams et al.
patent: 4116230 (1978-09-01), Gorelick
patent: 4144879 (1979-03-01), Nakayama et al.
patent: 4174707 (1979-11-01), Link et al.
patent: 4190886 (1980-02-01), Sherman
Looney, J., "Blood Pressure by Oscillometry," Med. Electronics Apr. 1978, pp. 57-63.

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