High/low flow anesthetic vaporizer

Details High/low flow anesthetic vaporizer High/low flow anesthetic vaporizer

1995-09-26

1997-09-09

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820316, A61M 1500, A61M 1610, F23D 1100, F23D 1400

Patent

active

056645619

ABSTRACT:
An anesthetic vaporizer having a means of mixing the anesthetic agent with a relatively low flow of carrier gas or a larger amount of carrier gas. A valve is operable by the user to select between the high flow anesthesia where the carrier gas and anesthetic agent are mixed in a mixing chamber and the low flow anesthesia where the carrier gas and anesthetic agent are diverted directly into the patient circuit. Accordingly, the anesthetic vaporizer is usable for high flow anesthesia, however, when used for low flow, the diverted flow allows more rapid response by eliminating the large volume of the mixing chamber.

REFERENCES:
patent: 4015599 (1977-04-01), Peterson
patent: 4576159 (1986-03-01), Hahn et al.
patent: 4611590 (1986-09-01), Ryschka et al.
patent: 5049317 (1991-09-01), Kiske et al.
patent: 5146915 (1992-09-01), Montgomery
patent: 5237990 (1993-08-01), Psaros et al.

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