Water trap and associated control system

Details Water trap and associated control system Water trap and associated control system

1988-08-26

1990-05-15

Burr, Edgar S.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 128719, A62B 700, A61B 508

Patent

active

049248600

ABSTRACT:
A water trap for a gas analyzer includes self-sealing filters formed of a porous polymer that includes a cellulose extract that causes the polymer to become impermeable on contact with water. The water trap in this way automatically protects the gas analyzer from liquid contamination. Preferably, the gas analyzer monitors a pressure parameter of a pneumatic line connected to the water trap and provides an indication that the water trap should be replaced in the event this pressure parameter indicates an abnormal operating condition.

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patent: 4327718 (1982-05-01), Cronenberg
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patent: 4445012 (1984-04-01), Blackburn et al.
patent: 4446869 (1984-05-01), Knodle
patent: 4549553 (1985-10-01), Hochberg
patent: 4558708 (1985-12-01), Labuda et al.
patent: 4575385 (1986-03-01), Brooks et al.
patent: 4579568 (1986-04-01), Ricciardelli et al.
patent: 4592368 (1986-06-01), Ricciardelli et al.
patent: 4668258 (1987-05-01), Steer
patent: 4713095 (1987-12-01), Ricciardelli

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