Dialysis systems having air traps with internal structures to enhance air removal
First Claim
1. A dialysis fluid cassette comprising:
- a rigid portion defining first and second valve chambers; and
the rigid portion further defining an air separation chamber in fluid communication with the first and second valve chambers, the air separation chamber including a baffle and structured such that when in an operating position, (i) the baffle extends upwardly from a bottom of the air separation chamber and (ii) first and second openings to the air separation chamber, communicating fluidly and respectively with the first and second valve chambers, are located near the bottom of the air separation chamber, such that dialysis fluid is forced up one side of the baffle and down another side of the baffle when flowing through the air separation chamber.
2 Assignments
0 Petitions
Accused Products
Abstract
A dialysis fluid cassette includes a rigid portion defining first and second valve chambers, the rigid portion further defining an air separation chamber in fluid communication with the first and second valve chambers, the air separation chamber including a baffle and structured such that when the cassette is placed in a dialysis instrument, (i) the baffle extends upwardly from a bottom of the air separation chamber and (ii) first and second openings to the air separation chamber, communicating fluidly and respectively with the first and second valve chambers, are located near the bottom of the air separation chamber, such that the dialysis fluid is forced up one side of the baffle and down the other side of the baffle when flowing through the air separation chamber.
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Citations
22 Claims
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1. A dialysis fluid cassette comprising:
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a rigid portion defining first and second valve chambers; and the rigid portion further defining an air separation chamber in fluid communication with the first and second valve chambers, the air separation chamber including a baffle and structured such that when in an operating position, (i) the baffle extends upwardly from a bottom of the air separation chamber and (ii) first and second openings to the air separation chamber, communicating fluidly and respectively with the first and second valve chambers, are located near the bottom of the air separation chamber, such that dialysis fluid is forced up one side of the baffle and down another side of the baffle when flowing through the air separation chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A dialysis fluid air separation chamber comprising:
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a plurality of chamber walls; and a surface within the walls forming a polygonal shape that forces dialysis fluid to flow above the polygonal shape, the polygonal shape including a plurality of faces forming at least one angle between the faces. - View Dependent Claims (17)
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18. A dialysis fluid cassette comprising:
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a rigid portion defining first and second valve chambers; and the rigid portion further defining an air separation chamber located between the first and second valve chambers, the air separation chamber when in an operating position including a first baffle portion extending up from and angling inwardly from an inlet of the air separation chamber and a second baffle portion extending down from the first baffle portion and angling outwardly towards an outlet of the air separation chamber. - View Dependent Claims (19, 20, 21, 22)
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Specification