Mask apparatus

Surgery – Respiratory method or device – Face mask covering a breathing passage

Reexamination Certificate

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Details

C128S206280, C128S206240, C128S206270

Reexamination Certificate

active

07152602

ABSTRACT:
A face mask comprises a sealing collar (1) extending around the mouth with a shelf (4) extending under the nose supporting a gel insert (7) that makes sealing contact between the nostrils and a passage (6) through the shelf. A curved, rigid window (30) is a push fit in a central opening (2) of the collar (1) and has a gas inlet (33) attached with it so that the window can be removed or connected with the sealing collar as necessary. The collar (1) supported on the head by a harness (20) having two triangular portions (21) on opposite sides encircling respective ears.

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patent: 2002/0185134 (2002-12-01), Bishop
patent: 99/25410 (1999-05-01), None
patent: 02/11804 (2002-02-01), None

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