Pulse oximeter monitor

Details Pulse oximeter monitor Pulse oximeter monitor

1986-05-20

1987-03-31

Howell, Kyle L.

Surgery

Truss

Pad

128666, 128689, A61B 502

Patent

active

046534989

ABSTRACT:
A display monitor is disclosed for a pulse oximeter of the type wherein light of two different wavelengths is passed through body tissue, such as a finger, an ear or the scalp, so as to be modulated by the pulsatile component of arterial blood therein and thereby indicate oxygen saturation. A tonal signal is emitted having a pitch proportional to the ratio of oxygen saturation and a sequential repetition proportional to pulse. A visual cue consisting of an array of strobed light emitting diodes is flashed having a total light output proportional to the magnitude of the pulse and a sequential flashing rate proportional to pulse rate. A systematic rejection of extraneous or irregular detected data prevents undue sounding of alarms.

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patent: 4266554 (1981-05-01), Hamaguri
patent: 4424814 (1984-01-01), Secunda

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