DIALYSATE REGENERATION SYSTEM FOR PORTABLE DIALYSIS

• US 20090020471A1
• Filed: 09/19/2008
• Published: 01/22/2009
• Est. Priority Date: 12/24/2003
• Status: Active Grant

• Current Assignee: Chemical Technologies, Inc. (Newpark Resources Incorporated)
• Original Assignee: Chemica Technologies LLC
• Inventors: Tsukamoto, Takuji
• Granted Patent: US 7,988,854 B2
• Time in Patent Office: Days
• US Class Current: 210/266
• CPC Class Codes: A61M 1/1696 with dialysate regeneration
• CPC Class Codes: B01D 2311/06 Specific process operations in the permeate stream
• CPC Class Codes: B01D 2311/2623 Ion-Exchange
• CPC Class Codes: B01D 2311/2626 Absorption or adsorption
• CPC Class Codes: B01D 2311/2649 Filtration
• CPC Class Codes: B01D 61/243 Dialysis
• CPC Class Codes: B01D 61/244 comprising multiple dialysis steps
• CPC Class Codes: B01D 61/30 Accessories; Auxiliary operation
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture

Abstract

A dialysate regeneration chamber is provided. In one embodiment, the dialysate regeneration chamber may include a toxin trap configured to selectively trap toxins and repel select cations.

Claims

1. A system capable of removing wastes from blood, the system comprising:

a dialysis chamber comprising a dialysate compartment, a blood compartment, and a semi-permeable membrane disposed substantially between the dialysate compartment and the blood compartment; and

a dialysate regeneration chamber further comprising a dialysate regeneration fabric including an immobilized urease.

2. The system of claim 1, wherein the dialysate regeneration chamber is configured to refresh spent dialysate from the dialysis chamber.

3. The system of claim 1, wherein the dialysate regeneration chamber comprises ion-selective urease-immobilized activated fibers.

4. The system of claim 1, wherein the system is portable.

5. The system of claim 1, further comprising a dialysate reservoir.

6. The system of claim 5, wherein the dialysate may be recirculated in a closed loop including the dialysate compartment and the dialysate regeneration chamber.

7. The system of claim 3, wherein the ion-selective urease-immobilized activated fibers may be configured to trap uremic toxins.

8. The system of claim 2 for use for hemodialysis treatment.

9. The system of claim 1 for use for peritoneal dialysis treatment.

10. A system for removing wastes from blood, the system comprising:

a dialysis chamber comprising a dialysate compartment, a blood compartment, and a semi-permeable membrane disposed substantially between the dialysate compartment and the blood compartment; and

a dialysate regeneration chamber further comprising a dialysate regeneration fabric including one or more ion selective activated carbon fibers.

11. A system for removing wastes from blood, the system comprising:

a dialysis chamber comprising a dialysate compartment, a blood compartment, and a semi-permeable membrane disposed substantially between the dialysate compartment and the blood compartment; and

a dialysate regeneration chamber further comprising a dialysate regeneration fabric including one or more activated carbon fibers and an ion exchange resin to increase a negative charge along the dialysate regeneration fabric.