BALANCED FLOW DIALYSIS MACHINE
First Claim
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1. A renal therapy system comprising:
- a dialyzer;
a balancing system configured to equalize flow volume of renal failure therapy fluid flowing to the dialyzer and from the dialyzer;
a controller configured to control the fresh renal therapy fluid and the spent renal therapy fluid for the balancing system so that a pressure of the fresh renal failure therapy fluid flowing to the balancing system is equal to a pressure of the spent renal failure therapy fluid flowing to the balancing system.
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Abstract
A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
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Citations
20 Claims
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1. A renal therapy system comprising:
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a dialyzer; a balancing system configured to equalize flow volume of renal failure therapy fluid flowing to the dialyzer and from the dialyzer; a controller configured to control the fresh renal therapy fluid and the spent renal therapy fluid for the balancing system so that a pressure of the fresh renal failure therapy fluid flowing to the balancing system is equal to a pressure of the spent renal failure therapy fluid flowing to the balancing system. - View Dependent Claims (2, 3, 4, 5)
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6. A renal therapy system comprising:
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a dialyzer; a balancing system configured to equalize flow volume of renal failure therapy fluid flowing to the dialyzer and from the dialyzer; a controller configured to control the fresh renal therapy fluid and the spent renal therapy fluid for the balancing system so that a pressure of the fresh renal failure therapy fluid flowing from the balancing system is equal to a pressure of the spent renal failure therapy fluid flowing from the balancing system. - View Dependent Claims (7, 8, 9, 10)
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11. A renal therapy system comprising:
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a dialyzer; first and second balancing devices configured to equalize flow volume of renal failure therapy fluid flowing to the dialyzer and from the dialyzer; a controller configured to equalize a fresh renal therapy fluid pressure on a fresh fluid side of the first and second balancing devices and equalize a spent renal therapy fluid pressure on a spent fluid side of the first and second balancing devices. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A renal therapy method comprising:
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providing a balancing system that equalizes flow volume of renal failure therapy fluid to a dialyzer and from the dialyzer; electronically controlling the flow of fresh renal therapy fluid and the flow of spent renal therapy fluid for the balancing system such that a pressure of at least one of (i) the fresh renal failure therapy fluid flowing to the balancing system is equal to a pressure of the spent renal failure therapy fluid flowing to the balancing system, or (ii) the fresh renal failure therapy fluid flowing from the balancing system is equal to a pressure of the spent renal failure therapy flowing from the balancing system. - View Dependent Claims (19, 20)
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Specification