Automatic blood pressure monitor having reduced data loss sensit

Details Automatic blood pressure monitor having reduced data loss sensit Automatic blood pressure monitor having reduced data loss sensit

1993-01-25

1994-01-25

Cohen, Lee S.

Surgery

Truss

Pad

128682, 36441303, A61B 500

Patent

active

052807908

ABSTRACT:
An automatic blood pressure monitor having a blood pressure cuff, an air pump applying pressurized air to the cuff, an air valve selectively venting the cuff, and a pressure transducer generating an output signal having a D.C. component indicative of the steady-state pressure in the cuff, and an A.C. component indicative of oscillometric pulses. The pressure transducer output is amplified and applied to an analog-to-digital converter which generates a digital word indicative of the steady-state cuff pressure. The amplified pressure transducer output is also applied to one input of a differential amplifier having an output that is applied to an analog-to-digital converter having a limited operating range. The other input of the amplifier receives an offset signal from a voltage source to offset the amplified pressure transducer output so that the output of the differential amplifier will not exceed the operating range of the analog-to-digital converter.

REFERENCES:
patent: 5054494 (1991-10-01), Lazzaro et al.

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