Surgery – Respiratory method or device
Patent
1996-11-22
1998-12-08
Lewis, Aaron J.
Surgery
Respiratory method or device
12820312, 12820325, A61M 1500
Patent
active
058456333
ABSTRACT:
In a dosing device and method for controlled dosing of a first gas into a second gas or liquid membrane which is permeable to the first gas separates the first gas from the second gas or liquid. Dosing of the first gas is performed by controlling diffusion through the membrane. The size of the active diffusion area can be regulated by a barrier which is moveable in relation to the membrane. When the barrier is moved in relation to the membrane, a larger or smaller part of the membrane's diffusion area can be exposed to the second gas or liquid. Alternatively, the membrane's permeability can be controlled or the partial pressure of the first gas can be controlled.
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Lewis Aaron J.
Siemens Elema A.B.
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