Pulse width modulation valve control for vital sign monitors

Details Pulse width modulation valve control for vital sign monitors Pulse width modulation valve control for vital sign monitors

1998-10-30

2000-07-25

O'Connor, Cary

Surgery

Diagnostic testing

Cardiovascular

600490, A61B 502

Patent

active

060931523

ABSTRACT:
A method for measuring a patient's blood pressure involves using a patient-applied cuff operably connected to an electronically controlled blood pressure monitor that includes a pump. The method includes controlling pressure in the cuff by inflating the cuff to a suprasystolic pressure, and step-wise deflating of the cuff to acquire blood-pressure data from the patient. The improvement includes using pulse-width modulation data to enhance control of cuff pressure.

REFERENCES:
patent: 4116230 (1978-09-01), Gorelick
patent: 4969466 (1990-11-01), Brooks
patent: 5224484 (1993-07-01), Newell
patent: 5337751 (1994-08-01), Newell et al.

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