Patent ID: 8490624

Claim:
A method for providing a respiratory therapy regimen to a patient, comprising: fitting the patient with a patient interface device, wherein the patient interface device has at least a first cushion, a second cushion and a third cushion associated therewith, wherein the first cushion is structured to produce a first contact footprint relative to the face of the patient by contacting a first portion of the face of the patient, the first contact footprint having a generally triangular shape, wherein the second cushion is structured to produce a second contact footprint relative to the face of the patient by contacting a second portion of the face of the patient, the second contact footprint having a generally elliptical shape, and wherein the third cushion is structured to produce a third contact footprint relative to the face of the patient by contacting a third portion of the face of the patient, the third contact footprint having a third shape, the third shape being different from the generally triangular shape and the generally elliptical, and wherein the patient interface device is selectively configurable to include any one of the first, second and third cushions; configuring and using the patient interface device according to a rotation, wherein in the rotation the patient interface device is configured to include the first cushion and a flow of breathing gas is delivered to the airway of the patient via the patient interface device during a first predetermined period, the patient interface device is configured to include the second cushion and a flow of breathing gas is delivered to the airway of the patient via the patient interface device during a second predetermined period, and the patient interface device is configured to include the third cushion and a flow of breathing gas is delivered to the airway of the patient via the patient interface device during a third predetermined period, wherein the first cushion includes a first visual marking indicating the first predetermined period, the second cushion includes a second visual marking indicating the second predetermined period, and the third cushion includes a third visual marking indicating the third predetermined period; and after the configuring and using the patient interface device according to the rotation is completed, re-configuring and re-using the patient interface device one or more additional times according to the rotation to deliver a flow of breathing gas to the airway of the patient such that a location on the patient's face wherein pressure is applied by the patient interface device is continuously changing during the respiratory therapy regimen.