US Patent 12059252 Monitoring blood oxygen saturation levels of a patient interface

A tubing assembly for use in providing a flow of positive pressure breathing gas to a patient. The tubing assembly includes a manifold portion structured to receive the flow of positive pressure breathing gas, a number of tubular portions which each extend from the manifold portion to a distal end which is structured to be coupled to a patient interface for use in delivering the flow of positive pressure breathing gas to the patient, and a reflectance pulse oximetry sensor positioned in or on one of the number of tubular portions. The sensor is structured to be disposed adjacent the patient when the tubing assembly is disposed on the patient for determining blood oxygen saturation levels of the patient.