Dialysis systems having spiraling fluid air separation chambers
First Claim
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1. A dialysis system comprising:
- a blood disposable operable with a dialysis instrument, the blood disposable includinga dialyzer,a pumping portion configured and arranged to be operated by a blood pump of the dialysis instrument, andan air separation chamber in fluid communication with the pumping portion, the air separation chamber including an inner surface, a blood inlet and a blood outlet, andwherein the pumping portion is configured to be actuated to pump blood through the dialyzer and the air separation chamber, and the air separation chamber is configured to cause the blood to spiral around the inner surface toward the blood outlet to remove air from the blood.
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Abstract
A dialysis fluid cassette includes a rigid portion defining at least one valve chamber, the rigid portion further defining an air separation chamber, the air separation chamber when in an operating position including an inner surface, a fluid inlet and a fluid outlet and configured to cause a dialysis fluid to spiral around the inner surface toward the fluid outlet, such that air is removed from the dialysis fluid.
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Citations
20 Claims
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1. A dialysis system comprising:
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a blood disposable operable with a dialysis instrument, the blood disposable including a dialyzer, a pumping portion configured and arranged to be operated by a blood pump of the dialysis instrument, and an air separation chamber in fluid communication with the pumping portion, the air separation chamber including an inner surface, a blood inlet and a blood outlet, and wherein the pumping portion is configured to be actuated to pump blood through the dialyzer and the air separation chamber, and the air separation chamber is configured to cause the blood to spiral around the inner surface toward the blood outlet to remove air from the blood. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dialysis system comprising:
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a dialysis instrument including a blood pump actuator; a blood disposable operable with the dialysis instrument, the blood disposable including an air separation chamber and a blood pumping portion operable with the blood pump actuator, the air separation chamber including a blood inlet and a blood outlet communicating fluidly with an inner surface of the air separation chamber, the inner surface configured to promote the spiraling of a blood to remove air from the blood. - View Dependent Claims (15, 16, 17)
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18. A method of removing air from a dialysis system comprising:
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introducing blood potentially containing air horizontally into an upper portion of a chamber of a blood disposable, the blood disposable including a blood pumping portion and a dialyzer; forcing the blood potentially containing air to spiral around the chamber from the upper portion to a lower portion of the chamber; and allowing the blood to exit from the lower portion of the chamber and air to migrate towards the upper portion of the chamber. - View Dependent Claims (19, 20)
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Specification