BATCH FILTRATION SYSTEM FOR PREPARATION OF STERILE FLUID FOR RENAL REPLACEMENT THERAPY
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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
20 Claims
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1. (canceled)
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2. A method of providing fluid to a blood treatment system for performing a blood treatment, the method comprising:
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at least one of carbon-filtering, deionizing, and ultra-filtering water to produce purified water, said purified water being sufficiently pure and sterile for infusion into a living animal; unsealing a first connector of a connector assembly of a sterile batch container, the connector assembly being attached to a filling port of the sterile batch container and having a sterile filter arranged between the filling port and the first connector; coupling the first connector so as to receive the produced purified water; flowing the purified water through the connector assembly into the sterile batch container so as to provide a sterile fluid stored therein, whereby any touch contamination resulting from said reversibly coupling is removed from the purified water by said sterile filter; coupling the sterile batch container to the blood treatment system; and flowing the sterile fluid from the sterile batch container to the blood treatment system at a rate of consumption of the sterile fluid required by the blood treatment system to perform a blood treatment, wherein a rate of the flowing the purified water into the sterile batch container is substantially lower than the rate of consumption. - View Dependent Claims (3, 4, 5, 6, 7)
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8. A method of providing fluid to a blood treatment system for performing a blood treatment, the method comprising:
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at least one of carbon-filtering, deionizing, and ultra-filtering water to produce purified water, said purified water being sufficiently pure and sterile for infusion into a living animal; unsealing a first connector of a connector assembly of a sterile batch container, the connector assembly being attached to a filling port of the sterile batch container and having a sterile filter arranged between the filling port and the first connector; coupling the first connector so as to receive the produced purified water; flowing the purified water through the connector assembly into the sterile batch container so as to provide a sterile fluid stored therein, whereby any touch contamination resulting from said reversibly coupling is removed from the purified water by said sterile filter; coupling the sterile batch container to the blood treatment system; flowing the sterile fluid from the sterile batch container to the blood treatment system at a rate of consumption of the sterile fluid required by the blood treatment system to perform a blood treatment; leaving the first connector coupled for an interval of time so as to isolate the produced purified water from contamination during said interval; and after said interval, decoupling the first connector and immediately coupling a first connector of a connector assembly of another sterile batch container so as to receive the produced purified water, the interval including a time interval between successive blood treatment processes provided to a patient. - View Dependent Claims (9, 10, 11, 12)
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13. A method of providing fluid to a blood treatment system for performing a blood treatment, the method comprising:
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at least one of carbon-filtering, deionizing, and ultra-filtering water to produce purified water, said purified water being sufficiently pure and sterile for infusion into a living animal; reversibly coupling a first connector of a connector assembly so as to receive the produced purified water, the connector assembly being attached to a first port of a sterile batch container and having an inline filter arranged between the first port and the first connector, the purified water being sufficiently pure and sterile for infusion into a living animal; flowing the produced purified water through the inline filter so as to filter the purified water thereby removing any touch contamination caused by the reversibly coupling, and flowing the filtered purified water into the sterile batch container; disconnecting the connector assembly from the sterile batch container; reversibly coupling the sterile batch container to the blood treatment system; and flowing contents of the sterile batch container through the first port to the blood treatment system as a blood treatment is performed and at a rate at which sterile fluid is consumed by the blood treatment. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification