Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1996-01-16
1998-08-18
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820429, 12820522, 12820127, 12820421, A62B 704, A62B 900, G05B 100, A61M 1600
Patent
active
057946167
ABSTRACT:
A multi-gas blending system for a diving profile is provided with three separate tanks, each having a different gas mix contained therein. The first tank, the primary tank, has a mix that is designed to be O.sub.2 rich for descending from the surface to a predetermined diving depth. At the predetermined diving depth, a switch is made by the diver and the system detects this switch. Prior to the switch, breathing parameters are calculated based upon the gas mix in the primary tank. Once the switch is detected, the calculation is performed on the mix in the second tank. This calculation continues until a predetermined amount of time has elapsed while the diver is on the secondary tank and the diver has begun an ascent and has passed a predefined depth. Once these two conditions occur, this is defined as a switch to a third gas mix, at which time the dive computer begins calculating the breathing parameters based upon a gas mix in a third tank. This is a decompression mixture.
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Cochran Michael J.
Readey Peter Francis
Asher Kimberly L.
Cochran Consulting, Inc.
Handley Mark W.
Howison Gregory M.
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