Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1996-10-23
1999-10-12
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820127, 12820528, A62B 710
Patent
active
059642211
ABSTRACT:
A gas absorption rebreather canister containing at least one sheet embodying adsorbent material inside and a portion of the sheet spaced apart by a separating means. The sheet being arranged so that expelled gases entering the canister pass along the canister interior substantially parallel with a surface of the sheet. The sheets can be formed with an internal screen positioned between two gas-permeable, liquid-water resistant membranes and the adsorbent material positioned within interstices between the screen members. Also, the sheets can comprise a sheet of expanded porous PTFE having a microstructure of nodes interconnected with fibrils, said sheet containing gas adsorbent material. The sheet can be covered on each side by a sheet of expanded porous PTFE. This device effectively contains the adsorption material within the sheets even when exposed to liquid water. The result is a rebreather device that is safer, more efficient, and easier to use than any presently on the market.
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"Equipment for the Working Diver", 1970 Symposium, Feb. 25, 1970.
Gore Enterprise Holdings Inc.
Johns David J.
Lewis Aaron J.
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