Method for providing a respirau00c7u00c3o gas to the respiratory system of a patient, device and interface of the patient, and,The system adapted to provide a trerapia respiratory system for a patient.

摘要

A system/method for reducing or eliminating application of continuous, repeated, and/or excessive pressure at the contact footprints of a patient interface device and headgear assembly. For example, a patient interface with a plurality of cushions, each producing a different contact footprint when worn by the patient is employed. As another example, a plurality of patient interface devices, each having a cushion that produces a different contact footprint when worn by the patient, are employed. As another example, a patient interface device having a cushion, the configuration/shape of which can be altered such that the contact footprint which it produces is also changed, is employed. The contact footprint to which the patient is exposed is altered after a predetermined time period.