Patent ID: 9199048
Filing Date: 2015-12-01
Classification: A61M

Abstract:
1. A pressure support system comprising: a pressure generator; a pressure sensor; a flow sensor; and a controller cooperating with the pressure sensor and the flow sensor to control operation of the pressure generator, wherein the controller includes a processor and a stored routine executed by the processor, wherein the routine is structured to automatically identify a patient interface device in use with the pressure support system by: providing a plurality of pressures to the patient interface device using the pressure support system and determining a plurality of exhaust flow rates of the patient interface device, each exhaust flow rate being responsive to one of the plurality of pressures; detecting one or more nil or minimal changes of the exhaust flow rates responsive to provided pressures level changes when the plurality of pressures are above a certain predetermined onset pressure, wherein the nil or minimal change of the exhaust flow rate comprises a change in flow rate that is less than or equal to a predetermined flow variation tolerance; and comparing a particular one of the exhaust flow rates and a pressure corresponding to the particular one of the exhaust flow rates to a plurality of predetermined flow rates and a number of predetermined pressure points to identify the patient interface device, the particular one of the exhaust flow rates being responsive to one of the plurality of pressures that is above the certain predetermined onset pressure, wherein each of the provided pressures level changes each is at least 25% of a normal operating range of the pressure support system.