Apnea detection for medical ventilator

Details Apnea detection for medical ventilator Apnea detection for medical ventilator

1997-11-17

2000-09-19

Lewis, Aaron J.

Surgery

Respiratory method or device

Means for indicating improper condition of apparatus

12820423, 12820421, A61M 1600

Patent

active

06119686&

ABSTRACT:
An apnea detection system is disclosed for use with a medical ventilator and which detects the volume of gas delivered by the ventilator to a patient and also the volume of gas exhaled by the patient. The two flow measurements are compared, preferably in a microprocessor, to determine whether an apnea condition exists by comparing, against a known standard, the two detected volumes. The volume of the exhaled gas must be a predetermined percentage of the volume of gas delivered to the patient within a predetermined time period or an alarm is activated indicating an apnea condition.

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