Surgery – Respiratory method or device – Face mask covering a breathing passage
Patent
1997-10-20
1999-08-24
Weiss, John G.
Surgery
Respiratory method or device
Face mask covering a breathing passage
12820621, 12820627, 12820227, 12820122, A62B 1808
Patent
active
059412453
ABSTRACT:
Inflatable harness respiratory apparatus (10) is provided having an improved comfort control assembly (16) allowing reduction in the engagement force exerted by the fitting surface (20) of the mask (12) against the face of the user. The mask (12) is equipped with an inflatable harness strap element (26) having terminal ends (28, 30) supported on stationary, tubular mask mounts (36) via housing assemblies (38). In one embodiment, the terminal ends (28, 30) are releasably locked onto the mounts (36) by means of locks (52), but are axially shiftable along the length of the mounts (36) in order to adjust the effective distance between the fitting surface (20) and the terminal ends (28, 30). An adjustment button (78) may be depressed in order to disengage the locks (52) and permit shifting of the associated terminal end (28, 30). Alternately, an intermediate comfort position is pneumatically achieved by controlled pressurization of an internal cavity (128) within the housing assembly (88).
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Ford Michael D.
Hannah Gary
Nellcor Puritan Bennett
Srivastava V.
Weiss John G.
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