Auto-fit mask

A system for predicting an unintentional leak between a patient interface and a patient's face, the system comprising:

• a sealing structure of a patient interface, the sealing structure including a seal surface to contact skin on the patient's face, the seal surface including a sensor to directly sense skin touch of the patient's face, a processor configured to receive a sensor signal from the sensor, the processor configured to predict a likelihood of an unintentional leak between the patient interface and the patient's face based on the sensor signal.

A system for learning how to fit a patient interface to a patient's face to form a seal:

• a memory storing at least one historical setting of a patient interface for fitting the patient interface to the patient's face;
• and
• a processor configured to analyze the at least one historical setting, and determine a setting to be applied to the patient interface to form a seal with the patient's face.

The system of any one of claims 36-35, wherein the memory is a solid state memory.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• a plurality of capacitive sensors coupled to the sealing structure, each sensor disposed at a different location on the sealing structure, each sensor configured to detect proximity between the sealing structure and the patient's face, each sensor adapted to couple with a processor to determine a sealing condition between the sealing structure and the patient's face based on a signal strength detected by each sensor.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a capacitive sensor including a copper tape coupled to the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a capacitive sensor including textile coupled to the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a resistive sensor coupled to the sealing structure, the resistor sensor including a pair of parallel conductive elements placed on the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a resistive ink bend sensor coupled to the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a shear sensor coupled to the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a piezoelectric film sensor coupled to the sealing structure, the sensor adapted to couple with a processor to determine proximity between the sealing structure and the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• a piezoresistive positioning structure to secure the sealing structure to the patient's face;
• a sensor coupled to the positioning structure to measure tension in the positioning structure, the sensor adapted to couple with a processor to determine tension in the positioning structure.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure to form a seal on the patient's face;
• and
• a positioning structure to secure the sealing structure to the patient's face, the positioning structure includes a nylon filament and heater filament to maintain the sealing structure in sealing contact with the patient's face.

A patient interface for sealed delivery of a flow of breathable gas to a patient's airway, the patient interface comprising:

• a sealing structure configured to form a seal on a patient's face;
• and
• a piezoelectric element coupled to the sealing structure, the element configured to vary the sealing structure to form a seal on the patient's face.

The patient interface of claim 138, wherein the piezoelectric element is attached to the sealing structure.

An apparatus for sealed delivery of a flow of breathable gas to a patient's airway, the apparatus comprising:

• a sealing structure to form a seal on the patient's face, the sealing structure comprising a conductive foam;
• and
• an electrode pair coupled to the conductive foam and configured for generating a sensor signal corresponding to compression of the conductive foam.