Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1990-10-03
1992-11-03
Burr, Edgar S.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820325, 12820524, A61M 1500
Patent
active
051599244
ABSTRACT:
A mixing device for respiratory, therapeutic, or anesthetic uses provides two of three gases to a mixed gas outlet. A gas selecting means fluidly connected with a first and second gas supplies selectively provides fluid passage of only one of the first or second gases to the outlet. A gas bypass selectively bypasses two of the three gases to the gas outlet. A locking device activated by the selecting means prevents a predetermined one of the first or second gases from being bypassed to the gas outlet. A first and second pressure balancing regulator equalizing the pressures of the selected gas and the third gas before passing those gases to a controllable mixing device which meters the gases into a mixing chamber, after which the gases are passed to the gas outlet. Advantageously, a gas selector knob is positioned coaxially with a mixing valve such that rotation of the selector valve causes correctly calibrated scales to become visible to reflect the mixture of the selected gases as they are mixed.
REFERENCES:
patent: 258677 (1952-02-01), Marrett
patent: 3351057 (1967-11-01), Goodyear
patent: 3896837 (1975-07-01), Rohling
patent: 4266573 (1981-05-01), Braatz
patent: 4576159 (1986-03-01), Hahn
patent: 4606340 (1986-08-01), Ansite
Cegielski Michael J.
Van den Berg Teunis T.
Burr Edgar S.
Lewis Aaron J.
LandOfFree
Method and apparatus for selectively mixing gases does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for selectively mixing gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for selectively mixing gases will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2044569