Gas delivery, evacuation and respiratory monitoring system...

Surgery – Respiratory method or device – Including body or head supported means covering user's scalp

Reexamination Certificate

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C128S203180, C128S204220

Reexamination Certificate

active

07004163

ABSTRACT:
A carbon-dioxide sampling tube operatively couples a capnograph and an exhaust-gas sampling tube of a mask. The mask has an ambient-to-inside-the mask inflow flapper valve located on a wall of the mask, a fresh-gas inflow tube, an exhaust-gas outflow tube, and a gas sampling tube. A fresh gas inflow tube operatively couples a fresh gas source and the face mask. An exhaust-gas hose operatively couples a scavenging system and the exhaust gas outflow tube.

REFERENCES:
patent: 2222971 (1940-11-01), Wright
patent: 4989596 (1991-02-01), Macris et al.
patent: 5676133 (1997-10-01), Hickle et al.

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