Respiratory equipment with comfort adjustment

Details Respiratory equipment with comfort adjustment Respiratory equipment with comfort adjustment

1995-06-06

1997-04-29

Millin, V.

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820122, 12820627, 12820626, 2 61, A62B 714

Patent

active

056239238

ABSTRACT:
A respiratory mask adapted to be fit against the face of a user is provided with a demand regulator connectable to a pressurized respiratory gas source. An extensible harness, having end portions connected to said mask, includes an inflatable element. A manually actuatable valve delivers pressurized respiratory gas from the source to the inflatable element to extend the harness when actuated and reduces the pressure in said inflatable element to retract said harness and to cause the mask to engage the face of the wearer when released. A sensor delivers an information representative of a force with which said mask engages the face to a valve for automatic control of exhaust of pressurized gas to atmosphere and admission of pressurized gas from the source, upon release of the manually actuatable valve to adjust the reduced pressure and to maintain the force at a value which is lower than the force exerted when the inflatable element is at an ambient pressure.

REFERENCES:
patent: 2287939 (1942-06-01), Kraft
patent: 2449548 (1948-09-01), Burns
patent: 3599636 (1971-08-01), Gutman et al.
patent: 3672384 (1972-06-01), Hellguist
patent: 3792702 (1974-02-01), Delest
patent: 4437462 (1984-03-01), Piljay et al.
patent: 4664108 (1987-05-01), Ansite
patent: 5036846 (1991-08-01), Aulgur et al.
Eros Magic Quick Donning Mask (4 pages) Scott Co.
Eros Quick Donning Mask (2 pages) Scott Co.

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