Electronic blood pressure meter

Details Electronic blood pressure meter Electronic blood pressure meter

1991-12-19

1993-06-15

Cohen, Lee S.

Surgery

Truss

Pad

128667, 128778, 128681, 128686, A61B 502

Patent

active

052189660

ABSTRACT:
In an electronic blood pressure meter for measuring blood pressure from a finger, there is provided a photoelectric sensor including a light emitting element and a light receiving element for detecting pulse wave components from a finger placed in a cuff. Since the variation of the DC component of the pulse wave from one person to another may exceed the linear range of pulse wave measurement, the brightness level of the light emitting element is adjusted according to the level of the DC component contained in the output from the light receiving element. Thereby, favorable extraction of the variational component of the pulse wave is made always within an accurate range of pulse wave measurement.

REFERENCES:
patent: 3229685 (1966-01-01), Ringkamp et al.
patent: 3482565 (1969-12-01), Gowen
patent: 4621643 (1986-11-01), New, Jr. et al.
patent: 4771790 (1988-09-01), Yamasawa et al.
patent: 4844084 (1989-07-01), Yamasawa
patent: 5002061 (1991-03-01), Close et al.
patent: 5025793 (1991-06-01), Richley et al.

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