SYSTEM AND METHOD FOR DELIVERY OF VARIABLE OXYGEN FLOW

摘要

A method and apparatus to deliver a variable flow of oxygen to a patient is described. The apparatus may include a flow control valve, a pressure sensor to detect a patient's breathing pressure and ambient pressure, an oxygen flow analyzer to measure oxygen flow to the patient, and a processor to analyze the breathing pressure values, ambient pressure value, and oxygen flow rate values and to determine when a patient is inhaling. When the processor determines the patient is inhaling, the processor calculates an optimal oxygen flow rate to deliver to a patient, which may depend on a pre-selected flow rate and an oxygen backlog, and the processor sends a signal to the flow control valve to deliver the optimal oxygen flow rate to the patient.

主权项

1. An apparatus to deliver a variable flow of oxygen to a patient, the apparatus comprising:
a flow control valve to deliver a flow of oxygen through an oxygen delivery device; a pressure sensor to detect the patient's breathing pressure and provide a plurality of breathing pressure values, and to measure ambient pressure and provide an ambient pressure value, the pressure sensor in communication with a processor; the processor programmed to receive the plurality of breathing pressure values and the ambient pressure value; the processor programmed to analyze the plurality of breathing pressure values to determine if a patient is inhaling or not inhaling, and the processor further programmed to calculate an amount of oxygen to deliver to a patient during a predetermined time frame, the amount of oxygen to deliver to the patient being calculated by a pre-selected oxygen flow rate plus an oxygen backlog; and the processor programmed to open the flow control valve when the processor determines the patient is inhaling and the oxygen backlog is greater than zero.