Priming system and method for dialysis systems
First Claim
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1. A dialysis treatment system capable of operating in a priming mode and a treatment mode, comprising:
- a. a housing defining a cavity, said cavity capable of receiving a manifold wherein said manifold comprises;
i. a plastic substrate comprising a first layer and a second layer;
ii. a first flow path defined by a first surface of the first layer and a first surface of the second layer;
iii. a second flow path defined by a first surface of the first layer and a first surface of the second layer; and
iv. a valve in fluid communication with both said first flow path and said second flow path wherein said valve has first state and a second state and wherein, when in said first state, the first flow path and second flow path are in fluid isolation and when in said second state, the first flow path and second flow path are in fluid communicationv. a diaphragm molded into said manifold and positioned over said valve; and
b. a valve interface physically attached to said housing, wherein said valve interface is configured to apply pressure to, or remove pressure from, said diaphragm to cause said valve to switch between said first state and said second state.
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Abstract
The application is directed to an extracorporeal blood processing system capable of using dialysate to prime the system. A plastic molded compact manifold supports molded blood and dialysate fluidic pathways along with relevant sensors, valves and pumps. The compact manifold is also disposable in one embodiment and can be detachably installed in the dialysis machine. A two-way valve in the manifold is used to direct the dialysate flow through the blood circuit to prime the circuit for use in treatment.
187 Citations
17 Claims
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1. A dialysis treatment system capable of operating in a priming mode and a treatment mode, comprising:
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a. a housing defining a cavity, said cavity capable of receiving a manifold wherein said manifold comprises; i. a plastic substrate comprising a first layer and a second layer; ii. a first flow path defined by a first surface of the first layer and a first surface of the second layer; iii. a second flow path defined by a first surface of the first layer and a first surface of the second layer; and iv. a valve in fluid communication with both said first flow path and said second flow path wherein said valve has first state and a second state and wherein, when in said first state, the first flow path and second flow path are in fluid isolation and when in said second state, the first flow path and second flow path are in fluid communication v. a diaphragm molded into said manifold and positioned over said valve; and b. a valve interface physically attached to said housing, wherein said valve interface is configured to apply pressure to, or remove pressure from, said diaphragm to cause said valve to switch between said first state and said second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A manifold capable of operating in a priming mode and a treatment mode, comprising:
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a. plastic substrate comprising a first layer and a second layer; b. a first flow circuit defined by a first surface of the first layer and a first surface of the second layer; c. a second flow circuit defined by a first surface of the first layer and a first surface of the second layer; d. a valve in fluid communication with both said first flow circuit and said second flow circuit wherein said valve has first state and a second state and wherein, when in said first state, fluid from said first flow circuit and cannot enter into said second flow circuit and when in said second state, fluid from said first flow circuit can enter into said second flow circuit; e. a diaphragm molded into said substrate and positioned over said valve f. an interface to receive a signal from a signal source to cause said valve to switch between said first state and said second state by applying or removing pressure from said diaphragm. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification