초록 ▼

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 apn

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.

대표청구항 ▼

[ We claim:] [10.] A system for determining an apnea condition in a medical ventilator system providing a breathing gas to a patient and receiving exhaled gas from that patient, said system comprising a ventilator, a patient breathing circuit connected to said ventilator and for connection to the pa

[ We claim:] [10.] A system for determining an apnea condition in a medical ventilator system providing a breathing gas to a patient and receiving exhaled gas from that patient, said system comprising a ventilator, a patient breathing circuit connected to said ventilator and for connection to the patient for communicating gas therebetween, sensor means to detect the volume of gas delivered through said patient breathing circuit to the patient and to detect the volume of gas exhaled by the patient, processor means to compare the volume of gas delivered to the patient through said patient circuit and the volume of gas exhaled by the patient detected by said sensor means, means to identify the specific patient breathing circuit communicating the gas from said ventilator to the patient and to input the identification to said processor means, said processor means determining a percentage of the volume of gas exhaled by the patient with respect to the volume of gas delivered to the patient based upon said input of the specific patient breathing circuit, said processor means to comparing said volume of gas detected by said sensor means of gas exhaled by the patient with the volume of gas delivered to the patient through said patient breathing circuit, and provide a signal when said exhaled volume does not exceed said determined percentage of gas provided to the patient within a predetermined period of time, and an alarm activated by said signal to alert the attending personnel of an apnea condition.