Anesthesia breathing system

Surgery – Truss – Pad

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A61M 1700

Patent

active

040077373

ABSTRACT:
There is disclosed an anesthesia breathing system which is interconnected between a source of gas, such as an oxygen or an anesthesia administration system, or both, and a patient supported inhalation-exhalation means such as a face mask or the like, which includes concentrically oriented double tubular inhalation and exhalation lines having one of the tubes positioned interiorly of the other tube, spacer means for supporting and maintaining the concentrically oriented tubes and spaced in relatively fixed spacial relation, first uni-directional valve means carried adjacent one end of the tube system and positioned adjacent to the patient supported inhalation-exhalation means to control gas flow through the inhalation tube and second unidirectional valve means adjacent to the first unidirectional valve means to control gas flow through the exhalation tube, such that the double tubular inhalation-exhalation line functions as a heat exchanger to warm the gases as they travel to the patient while at the same time permitting gas flow in the respective lines in one direction only.

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patent: 2868198 (1959-01-01), Brooke
patent: 3110754 (1963-11-01), Witort et al.
patent: 3473529 (1969-10-01), Wallace
patent: 3548822 (1970-12-01), Seeler et al.
patent: 3814091 (1974-06-01), Henkin
patent: 3815596 (1974-06-01), Keener et al.
patent: 3865106 (1975-02-01), Paluch

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