Hemofiltration system
AssigneeNxStage Medical, Inc.
InventorsJeffrey H. Burbank, Charles D. Finch JR., James M. Brugger
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Abstract
A hemofiltration system and method is provided that allows for high flow rate, accurate determination of net fluid withdrawal from or addition to a patient, and simple and reliable home operation. A removable, disposable assembly includes a filter housing and pump member including one or more fluid conduits mounted against the pump member, when the disposable filter/pump member assembly is attached to the treatment system, a pump roller mechanism associated with the system actuates the conduits mounted against the pump member. A disposable waste receptacle and fluid replacement (infusate) reservoir can be provided as an integral part of the disposable filter/pump member assembly.
Claims16
A method for hemofiltration, comprising the steps of:
- withdrawing blood through a blood withdrawal line at a rate of at least 300 ml/min.;
- passing the blood through a filter to remove waste;
- and
- passing the filtered blood through a blood return line and into the patient,
- wherein blood is withdrawn from and returned to the patient continuously for about 1.5 hours, and wherein the ratio of the clearance rate to blood flow rate is at least 100:400.
Dependencies are inferred from the claim text.