Apparatus and method for ethyl chloride topical anesthesia

Details Apparatus and method for ethyl chloride topical anesthesia Apparatus and method for ethyl chloride topical anesthesia

1997-10-16

1999-08-24

Weiss, John G.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820023, 514757, A61M 1500

Patent

active

059412437

ABSTRACT:
Apparatus for topical anesthesia by evaporative cooling with ethyl chloride (chloroethane) constitutes a container holding liquid ethyl chloride under pressure. A valve attached to the container hermetically seals the container in a first mode of operation. A second mode of operation of the valve is affected by finger pressure to emit a divergent fluid stream of ethyl chloride. The method of topical anesthesia using the apparatus constitutes positioning the surface area to be anesthetized at a distance from a divergent fluid stream of ethyl chloride such that a substantial portion of that area will subtend the divergent stream to provide faster and more uniform cooling than the non-divergent ethyl chloride stream of the prior art.

REFERENCES:
patent: 4216233 (1980-08-01), Stein
Hawley's Condensed Chemical Dictionary, ISBN 0-422-28097-1, p. 482, 1987.

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