Dialysis cassette having multiple outlet valve
First Claim
1. A disposable pumping cassette comprising:
- a pump chamber;
a first flow path leading from the pump chamber to an outlet of a first valve chamber;
a second flow path leading from an inlet of the first valve chamber to a first outlet of a second valve chamber;
the second valve chamber further including an inlet and a second outlet;
a flexible sheet positioned to selectively open and close the outlet of the first valve chamber and the second outlet of the second valve chamber; and
a third fluid flow path extending from the second outlet of the second valve chamber, the third fluid flow path including at least one characteristic selected from the group consisting of;
(i) leading to a third valve chamber; and
(ii) being positioned at an angle of at least about forty-five degrees with respect to at least one of the first and second fluid flow paths.
2 Assignments
0 Petitions
Accused Products
Abstract
A disposable pumping cassette in one embodiment includes a pump chamber; and a valve chamber in communication with the pump chamber, the valve chamber including an inlet and first and second outlets. A disposable pumping cassette in another embodiment includes a first valve chamber including an inlet and first and second outlets; and a second valve chamber including an inlet and an outlet, the second valve chamber openable to allow dialysis fluid to flow through one of the first and second outlets of the first valve chamber, through the outlet of the second valve chamber. A disposable pumping cassette in a further embodiment includes a valve chamber including a fluid inlet and first and second fluid outlets; and a flexible sheet openable to open and close only one of the first and second outlets.
212 Citations
20 Claims
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1. A disposable pumping cassette comprising:
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a pump chamber; a first flow path leading from the pump chamber to an outlet of a first valve chamber; a second flow path leading from an inlet of the first valve chamber to a first outlet of a second valve chamber; the second valve chamber further including an inlet and a second outlet; a flexible sheet positioned to selectively open and close the outlet of the first valve chamber and the second outlet of the second valve chamber; and a third fluid flow path extending from the second outlet of the second valve chamber, the third fluid flow path including at least one characteristic selected from the group consisting of;
(i) leading to a third valve chamber; and
(ii) being positioned at an angle of at least about forty-five degrees with respect to at least one of the first and second fluid flow paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A disposable pumping cassette comprising:
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a first valve chamber including an inlet and first and second outlets; a second valve chamber including an inlet and an outlet, the second valve chamber openable to allow dialysis fluid to flow through one of the first and second outlets of the first valve chamber, through the outlet of the second valve chamber; and wherein the second valve chamber is closeable to allow the dialysis fluid to flow through one of the first and second outlets of the first valve chamber to a third valve chamber. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A disposable pumping cassette comprising:
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a pump chamber; a first flow path leading from the pump chamber to an outlet of a first valve chamber; a second flow path leading from an inlet of the first valve chamber to a first outlet of a second valve chamber; the second valve chamber further including an inlet and a second outlet; a flexible sheet positioned to selectively open and close the outlet of the first valve chamber and the second outlet of the second valve chamber; and a third fluid flow path extending from the second outlet of the second pump valve chamber, the third fluid flow path leading to a third valve chamber.
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20. A disposable pumping cassette comprising:
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a pump chamber; a first flow path leading from the pump chamber to an outlet of a first valve chamber; a second flow path leading from an inlet of the first valve chamber to a first outlet of a second valve chamber; the second valve chamber further including an inlet and a second outlet; a flexible sheet positioned to selectively open and close the outlet of the first valve chamber and the second outlet of the second valve chamber; and a third fluid flow path extending from the inlet of the second valve chamber.
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Specification