System and method for analyzing upper airway, and respiratory pressure support system

摘要

The system for analyzing the upper airway has a sensor arrangement with at least two sensor positions provided along a flow path leading to the mouth and / or nose of the user 4. A relationship between the sensor signals at the two locations is derived, and this relationship is interpreted to detect at least the presence of an upper airway obstruction, and preferably also the location and / or extent of the obstruction. The system uses the acoustic sensor array signals at the first position and the second position to distinguish between inspiration and expiration.