Surgery – Truss – Pad
Patent
1975-04-07
1977-02-15
Michell, Robert W.
Surgery
Truss
Pad
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: 3865106 (1975-02-01), Paluch
Michell Robert W.
Recla Henry J.
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