DIALYSIS SYSTEM WITH ULTRAFILTRATION CONTROL
First Claim
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1. A method of performing dialysis, comprising:
- operating a first pump to pump dialysate at a first flow rate through a fluid inlet pathway into a dialyzer;
operating a second pump to pump the dialysate through a fluid outlet pathway out of the dialyzer;
operating a third pump to pump the dialysate through the fluid outlet pathway in cooperation with the second pump, wherein the second and third pumps cooperate to collectively achieve a second flow rate through the fluid outlet pathway from the dialyzer;
pumping blood through the dialyzer in communication with the dialysate such that the dialyzer dialyzes the blood.
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Abstract
Systems and methods are disclosed for performing hemodialysis that include fluid handling systems that provide accurate control over the type and level of hemodialysis being performed. The system includes a first pump for pumping dialysate into a dialyzer and a second pump for pumping dialysate out of the dialyzer. The system also includes a third pump that provides improved control of a level of ultrafiltration, hemodiafiltration, or both.
129 Citations
28 Claims
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1. A method of performing dialysis, comprising:
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operating a first pump to pump dialysate at a first flow rate through a fluid inlet pathway into a dialyzer; operating a second pump to pump the dialysate through a fluid outlet pathway out of the dialyzer; operating a third pump to pump the dialysate through the fluid outlet pathway in cooperation with the second pump, wherein the second and third pumps cooperate to collectively achieve a second flow rate through the fluid outlet pathway from the dialyzer; pumping blood through the dialyzer in communication with the dialysate such that the dialyzer dialyzes the blood. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of performing dialysis, comprising:
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providing a dialysis system having an inlet conduit through which fluid flows in an inward direction toward a dialyzer and an outlet conduit through which fluid flows in an outward direction from the dialyzer; pumping fluid through the inlet conduit using a first pump; pumping fluid through the outlet conduit using a second pump; and using a third pump to supplement the pumping of the second pump through the outlet conduit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A dialysis system, comprising:
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a dialyzer having a blood flow pathway through which blood flows; a fluid inlet pathway configured to provide incoming fluid to the dialyzer; a fluid outlet pathway configured to receive outgoing fluid from the dialyzer; a first pump coupled to the fluid inlet pathway and configured to pump the fluid through the fluid inlet pathway toward the dialyzer; a second pump coupled to the fluid outlet pathway and configured to pump the fluid through the fluid outlet pathway away from the dialyzer; and a third pump coupled to the fluid outlet pathway, the third pump configured to work in cooperation with the second pump to achieve a desired flow rate of fluid to or from the blood flowing through the dialyzer. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification