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.
申请公布号
WO03076020(A3)
申请公布日期
2003.11.06
申请号
WO2003GB00907
申请日期
2003.03.05
申请人
SMITHS GROUP PLC;BATEMAN, TIMOTHY;BISHOP, GILES, ANDREW;FIELD, STEPHEN, JAMES;LEE, ANDREW, JAMES;NEAME, SIMON;PAGAN, ERIC
发明人
BATEMAN, TIMOTHY;BISHOP, GILES, ANDREW;FIELD, STEPHEN, JAMES;LEE, ANDREW, JAMES;NEAME, SIMON;PAGAN, ERIC