Patient interface device having multi-chamber adjustable cushion, and apparatus and method for adjusting same

A patient interface device adjustment apparatus, comprising:

• a cushion support assembly having a plurality of fluid delivery needles extending therefrom, the cushion support assembly being structured to hold a cushion member having a plurality of chambers, each of the chambers being covered by a self-sealing membrane member, wherein when the cushion member is held by the cushion support assembly each fluid delivery needle will be inserted through a respective one of the membrane members and into the chamber that the one of the membrane members covers;
• and
• a fluid delivery module structured to selectively (i) deliver first fluid to any one of the chambers through the fluid delivery needle that is inserted into the one of the chambers when the cushion member is held by the cushion support assembly, and (ii) cause second fluid present within any one of the chambers to be leaked out of the one of the chambers through the fluid delivery needle that is inserted into the one of the chambers when the cushion member is held by the cushion support assembly.