Interlock system for anesthetic vaporizers

Surgery – Liquid medicament atomizer or sprayer

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Details

12820019, 74483K, A61M 1100, A61M 1700

Patent

active

043088651

ABSTRACT:
A vaporizer interlock system is disclosed which is used in an anesthesia machine having two calibrated vaporizers for providing an anesthetic to a patient and further having a selector valve with three positions, two extreme positions where one of the two vaporizers is being utilized and a middle position where neither vaporizer is used. The system prevents opening of either vaporizer when the selector valve is in the middle position. Also, when the selector valve is moved to one of its extreme positions selecting one of the vaporizers, the other vaporizer is prevented from being moved from its "off" position. The "on" vaporizer must thereafter be placed in its "off" position before the selector valve can be returned to its middle position. In addition, a quick disconnect means is shown for quickly attaching and detaching the vaporizers from the anesthesia machine.

REFERENCES:
patent: 1090863 (1914-03-01), Kelley
patent: 1340930 (1920-05-01), Catlin
patent: 2646474 (1953-07-01), Stratton
patent: 2756612 (1956-07-01), Schleicher
patent: 2764182 (1956-09-01), Mitcham
patent: 3831599 (1974-08-01), Needham
patent: 4058120 (1977-11-01), Caparrelli et al.
Ohio., Unitrol Anesthesia Machine, Airco Products Catalog Form No. 9906 (Rev. 1978).

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