| 摘要 |
A system/method for reducing or eliminating application of continuous, repeated, and/or excessive pressure at the contact footprints (20a - 2Oj) of a patient interface device (16 - 16") and headgear assembly (22a - 22d). For example, a patient interface (16 - 16") with a plurality of cushions (20 - 20'), each producing a different contact footprint (20a - 2Oj) when worn by the patient (14) is employed. As another example, a plurality of patient interface devices (16 - 16"), each having a cushion (20 - 20') that produces a different contact footprint (20a - 2Oj) when worn by the patient (14), 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 (20a - 2Oj) which it produces is also changed, is employed. The contact footprint (20a - 2Oj) to which the patient (14) is exposed is altered after a predetermined time period. |
