Peter Chi Fai Ho;Elizabeth Powell Margaria;Lance Ranard Busch;David W. Smith
发明人:
Peter Chi Fai Ho,Lance Ranard Busch,David W. Smith,Elizabeth Powell Margaria
申请号：
US12767882
公开号：
US08267089B2
申请日:
2010.04.27
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A patient interface device that includes a mask shell and a cushion assembly. The cushion assembly includes a seal cushion and a support cushion. The seal cushion contacts a first area of a patient's face to form a seal therewith. The support cushion defines a second area over a face of such a patient when the patient interface device is being worn. The second area overlaps at least a portion of the first area.
