Surgery – Liquid medicament atomizer or sprayer – Gas stream aspirating medicament from reservoir
Patent
1988-04-07
1989-11-14
Burr, Edgar S.
Surgery
Liquid medicament atomizer or sprayer
Gas stream aspirating medicament from reservoir
12820312, 12820314, 12820326, A61M 1100
Patent
active
048799971
ABSTRACT:
An anesthetic vaporizer comprises a housing having a gas inlet and outlet, a vaporizing chamber, a vaporizing passage for passing carrier gas from the gas inlet to the vaporizing chamber and withdrawing gas enriched with vaporized anesthetic therefrom for passage towards the gas outlet via a flow control valve, a gas bypass passage for passing gas from the gas inlet via a bypass control valve for mixing with anesthetic enriched gas adjacent the gas outlet, wherein the bypass control valve is operated by a Teflon control rod in response to the temperature within the vaporizing chamber. The control rod is physically isolated relative to the vaporizing chamber, but disposed in intimate thermal contact therewith. The vaporizing passage includes an inlet portion in the form of a spiral tube having opposite ends connected to the gas inlet and the vaporizing chamber and an outlet portion defined by a spiral passage bounded by the exterior of the spiral tube and a pair of concentrically disposed wick sleeves disposed in surface engagement with the spiral tube and in fluid communication with the vaporizing chamber; wherein one end of the spiral passage communicates with the vaporizing chamber and an opposite end communicates with the flow control valve.
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Asher Kimberly L.
Burr Edgar S.
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