Respiratory mask facial seal

Details Respiratory mask facial seal Respiratory mask facial seal

1995-09-08

1997-07-15

Millin, Vince

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820525, 12820614, 12820621, 12820625, 12820628, A62B 1808

Patent

active

056473575

ABSTRACT:
An improved flexible respiratory mask facial seal, as well a respiratory mask incorporating such seal. The facial seal comprises an annular member including a peripheral sidewall bounded by an inner end and an outer end generally opposite the inner end. The inner end is adapted for attachment to the shell or body portion of a respiratory mask and the outer end defines a contoured sealing surface adapted for confronting sealing engagement with a user's face. The annular member is formed of a gel substance possessing resilience characteristics corresponding to those of human fat tissue. Preferably, the annular member is encapsulated in a thin, pliable, membranous covering to enhance the durability and washability of the facial seal. Because the facial seal simulates the resiliency of human fat tissue, the user experiences the sensation of a natural substance against his skin when the mask is donned.

REFERENCES:
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patent: 2625155 (1953-12-01), Engelder
patent: 2837090 (1958-06-01), Bloom et al.
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patent: 2931356 (1960-04-01), Schwarz
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patent: 5343878 (1994-09-01), Scarberry et al.
S.F.C. Stewart, V. Palmieri and G.V.B. Cochran, "Wheelchair Cushion Effect on Skin Temperature, Heat Flux, and Relative Humidity", Arch. Phys. Med. Rehabil., vol. 61, pp. 229-233 (May 1980).

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