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US 8,986,254 B2Granted
Medical fluid pump systems and related components and methods
AssigneeFresenius Medical Care Holdings, Inc.
InventorsJules Jay Morris, Thomas Irvin Folden
Life of this patent
Estimating the term…
Abstract
A medical fluid delivery cassette configured for use with a medical fluid pumping system. The cassette includes a base, a membrane attached to the base, and an adhesive disposed on a portion of the membrane overlying a fluid pump chamber of the cassette. The portion of the membrane overlying the fluid pump chamber is moveable such that the volume of the fluid pump chamber can be changed.
Claims20
A medical fluid delivery cassette, comprising:
- a base defining an opening;
- a membrane attached to the base covering the opening, the membrane together with the base defining a fluid pump chamber, a flow pathway that leads from the fluid pump chamber to an inlet of the cassette, and a flow pathway that leads from the fluid pump chamber to an outlet of the cassette, and a portion of the membrane overlying the fluid pump chamber being moveable relative to the base such that the volume of the fluid pump chamber can be changed by applying a force to the portion of the membrane overlying the fluid pump chamber;
- an adhesive coating on an outside surface of the portion of the membrane overlying the fluid pump chamber;
- and
- a release layer substantially covering and releasably attached to the adhesive coating.
2 more elements
A medical fluid delivery method, comprising:
- adhering a first piston head of a medical system to a membrane of a medical fluid delivery cassette by moving the first piston head into contact with adhesive disposed on a portion the membrane overlying a first fluid pump chamber;
- and
- with the first piston head adhered to the membrane, changing a volume of the first fluid pump chamber by flexing the portion of the membrane overlying the first fluid pump chamber with the first piston head.
Dependencies are inferred from the claim text.