Renal therapy system having pump reversing fluid control
First Claim
1. A renal therapy system comprising:
- a filter;
an arterial blood flowpath in fluid communication with the filter;
a venous blood flowpath in fluid communication with the filter;
an extracorporeal circuit including the filter, the arterial blood flowpath and the venous blood flowpath;
a renal therapy fluid flowpath in fluid communication with the extracorporeal circuit;
first and second renal therapy fluid pumps in fluid communication with the filter; and
a plurality of renal therapy fluid valves located upstream and a plurality of renal therapy fluid valves located downstream of the first and second renal therapy fluid pumps,wherein the system is configured to operate the plurality of renal therapy fluid valves so that (i) the first renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath to the extracorporeal circuit for a number of first pump actuations and (ii) the second renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath for a number of second pump actuations.
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Accused Products
Abstract
A renal therapy system includes: a filter; an arterial blood flowpath in fluid communication with the filter; a venous blood flowpath in fluid communication with the filter; extracorporeal circuit including the filter, the arterial blood flowpath and the venous blood flowpath; a renal therapy fluid flowpath in fluid communication with the extracorporeal circuit; a plurality of renal therapy fluid valves; and first and second renal therapy fluid pumps, wherein the system is configured to operate the plurality of renal therapy fluid valves so that (i) the first renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath to the extracorporeal circuit for a number of first pump actuations and (ii) the second renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath for a number of second pump actuations.
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Citations
36 Claims
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1. A renal therapy system comprising:
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a filter; an arterial blood flowpath in fluid communication with the filter; a venous blood flowpath in fluid communication with the filter; an extracorporeal circuit including the filter, the arterial blood flowpath and the venous blood flowpath; a renal therapy fluid flowpath in fluid communication with the extracorporeal circuit; first and second renal therapy fluid pumps in fluid communication with the filter; and a plurality of renal therapy fluid valves located upstream and a plurality of renal therapy fluid valves located downstream of the first and second renal therapy fluid pumps, wherein the system is configured to operate the plurality of renal therapy fluid valves so that (i) the first renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath to the extracorporeal circuit for a number of first pump actuations and (ii) the second renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath for a number of second pump actuations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 24, 25, 26)
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12. A renal therapy system comprising:
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a dialyzer; an arterial blood flowpath in fluid communication with the dialyzer; a venous blood flowpath in fluid communication with the dialyzer; a first dialysate flowpath in fluid communication with the dialyzer; a second dialysate flowpath in fluid communication with the dialyzer; first and second dialysate pumps in fluid communication with the dialyzer; and a plurality of dialysate valves located upstream and a plurality of dialysate valves located downstream of the first and second dialysate pumps, wherein the system is configured to operate the plurality of dialysate valves so that (i) the first dialysate pump pumps dialysate through one of the first and second dialysate flowpaths to the dialyzer for a number of first pump actuations and (ii) the second dialysate pump pumps dialysate through one of the first and second dialysate flowpaths to the dialyzer for a number of second pump actuations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 27, 28, 29)
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20. A renal therapy system comprising:
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a filter; an arterial blood flowpath in fluid communication with the filter; a venous blood flowpath in fluid communication with the filter; first and second renal therapy fluid pumps; a renal therapy fluid supply; and first and second renal therapy fluid valves located downstream of the first and second renal therapy fluid pumps, respectively, the system configured to operate such that (i) the first renal therapy fluid valve allows the first renal therapy fluid pump to pump renal therapy fluid from the renal therapy fluid supply to the filter for a number of first pump actuations and (ii) the second renal therapy fluid valve allows the second renal therapy fluid pump to pump renal therapy fluid from the renal therapy fluid supply to the filter for a number of second pump actuations. - View Dependent Claims (21, 22, 23, 30, 31, 32)
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33. A renal therapy system comprising:
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a filter; an arterial blood flowpath in fluid communication with the filter; a venous blood flowpath in fluid communication with the filter; an extracorporeal circuit including the filter, the arterial blood flowpath and the venous blood flowpath; a renal therapy fluid flowpath in fluid communication with the extracorporeal circuit; a renal therapy fluid supply; first and second renal fluid therapy pumps; and wherein the system allows the first and second renal fluid therapy pumps to switch pumping duties via a first valve located between the fluid supply and an inlet of the first renal therapy fluid pump, a second valve located between the fluid supply and an inlet of the second renal therapy fluid pump, a third valve located between an outlet of the first renal therapy fluid pump and the extracorporeal circuit, a fourth valve located between an outlet of the second renal therapy fluid pump and the extracorporeal circuit, a fifth valve located between the extracorporeal circuit and the inlet of the first renal therapy fluid pump, a sixth valve located between the extracorporeal circuit and the inlet of the second renal therapy fluid pump, a seventh valve located between the outlet of the first renal therapy fluid pump and the fluid supply acting as a drain or a separate drain, and an eighth valve located between the outlet of the second renal therapy fluid pump and the fluid supply acting as a drain or a separate drain. - View Dependent Claims (34, 35, 36)
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Specification