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US 8,034,161 B2Granted
Carbon dioxide gas removal from a fluid circuit of a dialysis device
AssigneeFresenius Medical Care Holdings, Inc.
InventorsVictor Gura, Carlos Jacobo Ezon, Masoud Beizai
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Abstract
The present invention is directed to degassing devices for dialysate circuits. One embodiment has a first housing and a second housing positioned within the first housing in an annular relationship. A second embodiment comprises a dialysate regeneration system with urease, a dialyzer, and a housing with an external wall, where the external wall is exposed to atmosphere and comprises a material that passes gas but does not pass liquid and where the housing is positioned between the urease and dialyzer.
Claims11
A degassing device comprising:
- a. a first housing having an inlet, a first length and an inner wall having an upper end, defining a first inner chamber;
- b. a second housing positioned within said first inner chamber in an annular, concentric relation to the first housing wherein the second housing has an outer wall, an outlet, a second length and an inner wall defining a second inner chamber, wherein the second length is less than the first length, and wherein a space between the first length and second length defines a gap;
- c. a flowpath through said degassing device wherein said flowpath is defined by the inlet, the gap, and the outlet;
- and
- d. a hydrophobic membrane positioned proximate to said gap and over the upper end of the first housing.
2 more elements
Dependencies are inferred from the claim text.