Dialysis system with balance chamber prime and rinseback
First Claim
1. A dialysis system comprising:
- an extracorporeal circuit including a blood pump;
a dialyzer in communication with the extracorporeal circuit, the dialyzer including a fresh dialysis fluid inlet and a used dialysis fluid outlet;
a dialysis fluid circuit includinga first balance chamber including a fresh compartment and a used compartment, the fresh compartment of the first balance chamber in fluid communication with the fresh dialysis fluid inlet of the dialyzer,a second balance chamber including a fresh compartment and a used compartment, the fresh compartment of the second balance chamber in fluid communication with the fresh dialysis fluid inlet of the dialyzer,a fresh dialysis fluid pump in fluid communication with the fresh compartment of the first balance chamber and the fresh compartment of the second balance chamber,a used dialysis fluid pump in fluid communication with the used compartment of the first balance chamber and the used compartment of the second balance chamber, the used dialysis fluid pump also in fluid communication with the used dialysis fluid outlet of the dialyzer; and
wherein the system is configured to run a blood rinseback sequence in which (i) at least one of the fresh dialysis fluid pump or the used dialysis fluid pump is operated to pump dialysis fluid through the dialyzer and into the extracorporeal circuit and (ii) the blood pump is operated to push blood back to a patient connected to the extracorporeal circuit.
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Accused Products
Abstract
A dialysis system includes an extracorporeal circuit, a dialysis fluid circuit including first and second balance chambers, a fresh dialysis fluid pump in fluid communication with first and second fresh compartments of the first and second balance chambers, respectively. The first and second fresh compartments are in fluid communication with a fresh dialysate fluid inlet of the dialyzer, and a used dialysis fluid pump is in fluid communication with first and second spent compartments of the first and second balance chambers, respectively. The system is configured to run a blood rinseback sequence in which (i) at least one of the fresh used dialysis fluid pumps is operated to pump dialysis fluid through the dialyzer and into the extracorporeal circuit and (ii) the blood pump is operated to push blood back to a patient connected to the extracorporeal circuit.
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Citations
20 Claims
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1. A dialysis system comprising:
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an extracorporeal circuit including a blood pump; a dialyzer in communication with the extracorporeal circuit, the dialyzer including a fresh dialysis fluid inlet and a used dialysis fluid outlet; a dialysis fluid circuit including a first balance chamber including a fresh compartment and a used compartment, the fresh compartment of the first balance chamber in fluid communication with the fresh dialysis fluid inlet of the dialyzer, a second balance chamber including a fresh compartment and a used compartment, the fresh compartment of the second balance chamber in fluid communication with the fresh dialysis fluid inlet of the dialyzer, a fresh dialysis fluid pump in fluid communication with the fresh compartment of the first balance chamber and the fresh compartment of the second balance chamber, a used dialysis fluid pump in fluid communication with the used compartment of the first balance chamber and the used compartment of the second balance chamber, the used dialysis fluid pump also in fluid communication with the used dialysis fluid outlet of the dialyzer; and wherein the system is configured to run a blood rinseback sequence in which (i) at least one of the fresh dialysis fluid pump or the used dialysis fluid pump is operated to pump dialysis fluid through the dialyzer and into the extracorporeal circuit and (ii) the blood pump is operated to push blood back to a patient connected to the extracorporeal circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of performing a blood rinseback sequence in a dialysis system including (i) an extracorporeal circuit having a blood pump, (ii) a dialyzer in communication with the extracorporeal circuit, and (iii) a dialysis fluid circuit in communication with the dialyzer and including a fresh dialysis fluid membrane pump and a used dialysis fluid membrane pump, the method comprising:
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operating at least one of the fresh dialysis fluid membrane pump and the used dialysis fluid membrane pump so as to pump dialysis fluid through the dialyzer and into an extracorporeal circuit; and operating the blood pump so as to push blood back to a patient connected to the extracorporeal circuit. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification