Fuente: Wipo "Sensorization" There is provided a fixation structure for securing a patient interface to a patient. The fixation structure comprises a body having a first side and a second side. The fixation structure has a patient attachment so as to removably attach to a patient and a fixing element to removably attach to the patient interface. Sensor componentry is provided on or in one or more of the body, the patient attachment and the fixing element or attachable to one or more of the body, the patient attachment and the fixing element. There is also provided herein fixation structures comprising a fixation structure, systems for delivery of a breathable gas to a patient and patient monitoring systems.