Adaptive control of neonatal fractional inspired oxygen

Details Adaptive control of neonatal fractional inspired oxygen Adaptive control of neonatal fractional inspired oxygen

1987-11-17

1989-12-26

Jaworski, Francis

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

128634, A61M 1600, A62B 700, F16K 3102

Patent

active

048891169

ABSTRACT:
An adaptive controller for delivering fractional inspired oxygen to a patient. The controller utilizes a pulse oximeter connected by an optical sensor to the patient for measuring the patient's blood hemoglobin saturation and pulse rate. Signals from the oximeter are used by a calculator for determining the fractional inspired oxygen level to be delivered to the patient. The calculated percentage of oxygen is provided to the patient so that the gas taken in by the patient automatically causes the blood in the patient to reach a predetermined hemoglobin saturation level which adapts to the patient's requirements. The calculator is programmed to determine when there is an excess deviation of the patient's pulse rate. When an excess deviation is detected, the fractional inspired oxygen level to the patient is fixed until the excess deviation of the pulse rate has been terminated. A depressed respiration level can also be detected which causes a preset higher percentage of oxygen to be supplied to the patient until the depressed respiration of the patient has been terminated.

REFERENCES:
patent: 4326513 (1982-04-01), Schulz et al.
patent: 4765340 (1988-08-01), Sakai et al.

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