Surgery – Respiratory method or device – Face mask covering a breathing passage
Reexamination Certificate
2006-03-07
2006-03-07
Lewis, Aaron J. (Department: 3743)
Surgery
Respiratory method or device
Face mask covering a breathing passage
C128S206240, C128S206260
Reexamination Certificate
active
07007696
ABSTRACT:
A nasal CPAP treatment apparatus is disclosed with a flow generator coupled to a nasal mask. The mask has a nasal cushion forming a nose-receiving cavity. The cushion has a triangularly-shaped frame of resilient material with a mask engaging portion connected by a side wall to a face engaging portion which has a nasal bridge region, a cheek region and a lip region. The cushion may have a portion of the side wall in the nasal bridge region being other than straight to provide an improved sealing in the nasal bridge region. A plurality of membranes, preferably three, of resilient material extend substantially around the triangularly-shaped frame. Some of the membranes are thicker in the lip region than in the nasal bridge region to improve fit of the cushion in use.
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Cichon Norbert E
Fitzsimmons James L.
Palkon David J.
Sleeper Geoffrey P.
Lewis Aaron J.
Pearne & Gordon LLP
Tiara Medical Systems, Inc.
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