Automatic blood pressure measuring device

Details Automatic blood pressure measuring device Automatic blood pressure measuring device

1990-01-11

1990-11-27

Hindenburg, Max

Surgery

Truss

Pad

128682, A61B 502

Patent

active

049728407

ABSTRACT:
A method and apparatus for determining mean blood pressure involves the use of a pre-programmed microprocessor which interprets pressure oscillation values from a pressure cuff affixed to a subject's limb. The pressure cuff is inflated to a value above apparent systolic pressure and then deflated in steps. The steps are all substantially equal mmHg declinations in cuff pressure. At each step cuff ocsillation values are taken and stored. The greatest cuff oscillation and its associated cuff pressure are noted, along with the next greatest cuff oscillations and associated cuff pressures on either side of the greatest oscillation. The actual mean blood pressure is then determined by forming a window adjacent to the greatest oscillation and calculating, on which side of the greatest oscilation, within the window, the mean pressure is disposed.

REFERENCES:
patent: 4543962 (1985-10-01), Medero et al.
patent: 4546775 (1985-10-01), Medero
patent: 4638810 (1987-01-01), Ramsey, III et al.
patent: 4703760 (1987-11-01), Miyawaki et al.
patent: 4754761 (1988-07-01), Ramsey, III et al.
patent: 4796184 (1989-01-01), Bahr et al.

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