Blood pressure measuring apparatus

Details Blood pressure measuring apparatus Blood pressure measuring apparatus

1989-02-16

1991-03-19

Hindenburg, Max

Surgery

Truss

Pad

128682, 128677, A61B 502

Patent

active

050001876

ABSTRACT:
An apparatus for continuously measuring blood pressure of a subject based on magnitude variation of heartbeat-synchronous pulses produced from the subject, the apparatus including a detecting device for continuously detecting the pulses, the detecting device including an inflatable cuff to be set around a body portion of the subject, magnitude of the pulses being varied as pressure in the inflatable cuff is varied, the varying magnitude of the pulses being detected by the detecting device, a selecting device for selecting a pulse from the pulses detected at a preceding blood pressure measuring cycle, the selected pulse corresponding to maximum blood pressure determined at the preceding measuring cycle, a first determining device for determining a reference value based on at least a magnitude of the selected pulse, a second determining device for comparing, with the reference value, the varying magnitude of the heartbeat-synchronous pulses detected at a current blood pressure measuring cycle, and determining as temporary maximum blood pressure a pressure in the inflatable cuff when the varying magnitude of the currently detected pulses exceeds the reference value, and a display device for displaying the temporary blood pressure before determination of maximum blood pressure at the current blood pressure measuring cycle.

REFERENCES:
patent: 4625277 (1986-11-01), Pearce et al.
patent: 4754761 (1988-07-01), Ramsey, III et al.
patent: 4774960 (1988-10-01), Arnold et al.
patent: 4777959 (1988-10-01), Wallach et al.

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