US 6,467,480 B1Granted

Procedure and device for the movement and volume measurement of fluids and gases and device for the implementation of a respiration

AssigneeBernd Horst Meier

InventorsBernd Horst Meier, Helmut O. Heinemann

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Abstract

A device and method for movement and measurement of fluid volumes involves defining a fluid volume in a measuring chamber of a rotation vessel by at least first and second pistons movable within the measuring chamber, with the first and second pistons separating and indicating the volume of fluid moved into and out of the measuring chamber via flow-regulating valves. A holding means alternately holds the first and second pistons at fixed positions within the measuring chamber while the other piston rotates. A device and method of respiration involves a respirator including a plurality of flexible gas bags and a stiff gas tank with a first flexible gas bag positioned inside a second flexible gas bag and both gas bags being positioned inside the stiff tank. The respirator is connected to the device for the movement and measurement of fluid volumes via respirator valves.

Claims23

Dependent claims

A device for movement and measurement of a fluid volume, with the fluid volume being defined in a measuring chamber of a rotation vessel by at least first and second pistons movable within the measuring chamber, said pistons separating the fluid volume and indicating fluid-volume movement into and out of the measuring chamber via flow-regulating valves, the device comprising:

the rotation vessel;
the flow-regulating valves;
the at least first and second pistons, which are alternately rotated and held fixed;
holding means for alternately fixedly holding the first and second pistons within the measuring chamber;
wherein, during a first cycle phase, a volume of fluid flows into a first measuring space within the measuring chamber, said first measuring space being defined by at least the first piston, which is held fixed within the measuring chamber by the holding means, and by at least the second piston, which is movable within the measuring chamber;
and
wherein, during a second cycle phase, the volume of fluid in the first measuring space flows out of the first measuring space as the second piston is held fixed within the measuring chamber by the holding means and the first piston is movable within the measuring chamber;
wherein the first measuring space is separated from a second measuring space of the measuring chamber by at least one of said first and second pistons.

5 more elements

A method for movement and measurement of fluid volumes with a fluid volume being defined in a measuring chamber of a rotation vessel by at least first and second pistons movable within the measuring chamber, said first and second pistons separating and indicating the fluid volume of fluid moved into and out of the measuring chamber via flow-regulating valves, the method comprising first-measuring-space cycle steps as follows:

opening a first of the flow-regulating valves leading into a first measuring space within the measuring chamber to flow a first volume of fluid into the first measuring space, the first measuring space being limited by at least the first piston that is held fixed within the measuring chamber while the second piston is allowed to rotate away from the first piston;
and
opening a second of the flow-regulating valves leading from the first measuring space to flow the first volume of fluid out of the first measuring space, the first measuring space now being defined by at least the second piston that is held fixed while the first piston is allowed to rotate toward the second piston.

Dependencies are inferred from the claim text.