Surgery – Respiratory method or device – Inhaled gas heated or humidified by exhaled gas
Patent
1990-06-19
1991-07-30
Burr, Edgar S.
Surgery
Respiratory method or device
Inhaled gas heated or humidified by exhaled gas
12820527, 12820529, 55498, 55DIG35, 2104931, A61M 1610, B01D 2707, B01D 2907
Patent
active
050352369
ABSTRACT:
A heat and moisture exchanger for use in medico-surgical applications has an element formed by a strip of bacterial filter material that is folded laterally into pleats and bent into a loop so that the folds extend radially. The element is sealed around its outer edge into a circular casing having axial, tapered ports at its opposite ends. A conical gas diverter is sealed into a central opening of the element on each side. Exhaled gas warms and moistens the element; inhaled gas is filtered and takes up some of the heat and moisture from the element. The exchanger is symmetrical so that it can be used either way around.
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Burr Edgar S.
Raciti Eric P.
Smiths Industries Public Limited Company
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