BATCH FILTRATION SYSTEM FOR PREPARATION OF STERILE FLUID FOR RENAL
First Claim
1. A method of administering a renal replacement therapy requiring a sterile fluid, comprising the steps of:
- at least one of carbon-filtering, deionizing, and ultra-filtering water to produce a source fluid;
sterile-filtering the source fluid to generate a sterile fluid;
flowing said sterile fluid into a sterile batch container;
said steps of sterile-filtering and flowing including performing said steps at a location and time at which a patient is to be treated using sterile fluid from the batch container; and
flowing said sterile fluid from said sterile batch container to a treatment system, wherein at least one of said steps of sterile-filtering and flowing includes automatically controlling at least one of a flow rate of said sterile fluid and a rate of heating of said sterile fluid responsively to data representing at least one of a statement start time and a volume of said fluid infusible fluid required for a treatment.
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Accused Products
Abstract
A method and device for blood treatments that use fluids such as dialysate and replacement fluid for renal replacement therapy. In an embodiment, fluid is passed either by pump or passively by gravity feed, through a microporous sterilization filter from a fluid source to a replacement fluid container. The latter forms a batch that may be used during treatment. The advantage of forming the batch before treatment is that the rate of filtering needn'"'"'t match the rate of consumption during treatment. As a result, the sterilization filter can have a small capacity. In another embodiment, a filter is placed immediately prior to the point at which the sterile fluid is consumed by the treatment process. The latter may be used in combination with the former embodiment as a last-chance guarantee of sterility and/or that the fluid is free of air bubbles. It may also be used as the primary means of sterile-filtration.
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Citations
21 Claims
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1. A method of administering a renal replacement therapy requiring a sterile fluid, comprising the steps of:
- at least one of carbon-filtering, deionizing, and ultra-filtering water to produce a source fluid;
sterile-filtering the source fluid to generate a sterile fluid;
flowing said sterile fluid into a sterile batch container;
said steps of sterile-filtering and flowing including performing said steps at a location and time at which a patient is to be treated using sterile fluid from the batch container; and
flowing said sterile fluid from said sterile batch container to a treatment system, wherein at least one of said steps of sterile-filtering and flowing includes automatically controlling at least one of a flow rate of said sterile fluid and a rate of heating of said sterile fluid responsively to data representing at least one of a statement start time and a volume of said fluid infusible fluid required for a treatment.
- at least one of carbon-filtering, deionizing, and ultra-filtering water to produce a source fluid;
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2. A method of administering a rental replacement therapy requiring a sterile fluid, comprising:
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deionizing water to generate a source fluid;
sterile-filtering the source fluid to generate sterile water, the sterile-filtering include passing the water through an ultrafilter;
flowing the sterile water into a sterile batch container that contains dialysate concentrate to produce a solution;
the sterile-filtering and flowing including performing the steps at a location and time at which a patient is to be treated using the solution; and
flowing the solution from the sterile batch container to a treatment system, wherein the sterile-filtering includes automatically controlling a flow volume responsively to a treatment start time, a volume of the solution required for a treatment, and a required concentration of the solution. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of administering a renal replacement therapy requiring a sterile fluid, comprising:
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deionization-filtering water to produce deionized water;
ultrafiltering the deionized water to generate purified water;
providing a sterile batch container containing a predefined quantity of concentrate;
flowing the purified fluid into the batch container to generate a solution;
storing the solution in the batch container;
the filtering, providing, and flowing being done at a location and time at which a patient is to be treated using the solution; and
flowing the solution from the sterile batch container to a treatment system;
wherein the flowing of the purified fluid into the batch container includes automatically controlling a flow rate responsively to data representing a volume of the fluid infusible fluid required for a treatment. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification