DUAL MODE HEMODIALYSIS MACHINE

• US 20110272337A1
• Filed: 05/04/2011
• Published: 11/10/2011
• Est. Priority Date: 05/04/2010
• Status: Abandoned Application

• Current Assignee: C-Tech Biomedical, Inc.
• Original Assignee: C-Tech Biomedical, Inc.
• Inventors: Palmer, Grant
• Application Number:
  US13/100,847
• Publication Number:
  US 20110272337A1
• Time in Patent Office: Days
• US Class Current: 210/195.2
• CPC Class Codes: A61M 1/1656 Apparatus for preparing dialysates
• CPC Class Codes: A61M 1/1668 Details of containers
• CPC Class Codes: A61M 1/1696 with dialysate regeneration
• CPC Class Codes: A61M 1/287 Dialysates therefor
• CPC Class Codes: A61M 1/3646 Expelling the residual body fluid after use, e.g. back to the body

Abstract

A compact portable dual mode hemodialysis machine system is provided. The system includes a sorbent dialysis module with a sorbent cartridge that purifies a dialysate fluid that flows therethrough, where the sorbent dialysis module returns the purified dialysate fluid from the sorbent cartridge to an inlet of a dialyzer. The system also includes a single-pass dialysis module with an acetate pump, a bicarbonate pump and a mixing chamber, where the acetate and bicarbonate pumps flow acetate and bicarbonate mixtures, respectively, into the mixing chamber. The single-pass dialysis module receives a desired amount of water from a reverse osmosis device, the single-pass dialysis module operated to direct used dialysate from the dialyzer to a drain. The machine system can be operated to replace the sorbent cartridge with the single-pass dialysis module to switch the operation of the dual mode hemodialysis machine system from a sorbent dialysis mode to a single-pass dialysis mode

Claims

1. A compact portable dual mode hemodialysis machine system, comprising:

a sorbent dialysis module comprising a sorbent cartridge configured to purify a dialysate fluid that flows therethrough, the sorbent dialysis module configured to return a purified dialysate fluid from the sorbent cartridge to an inlet of a dialyzer; and

a single-pass dialysis module comprising an acetate pump, a bicarbonate pump and a mixing chamber, the acetate and bicarbonate pumps configured to flow an acetate and bicarbonate into the mixing chamber, the single-pass dialysis module further configured to receive a desired amount of water from a reverse osmosis device, the single-pass dialysis module configured to direct used dialysate from the dialyzer to a drain,

wherein the single-pass dialysis module is configured to replace the sorbent cartridge to switch the operation of the dual mode hemodialysis machine system from a sorbent dialysis mode to a single-pass dialysis mode.

2. The system of claim 1, further comprising a blood pump configured to pump blood through the dialyzer at a flow rate of between about 50-600 mL/min and a dialysate pump configured to pump a dialysate through the dialyzer at a flowrate of between about 50-600 mL/min.

3. The system of claim 2, wherein the blood pump is configured to pump blood through the dialyzer at a flowrate of between about 50-450 mL/min and the dialysate pump is configured to pump the dialysate at a flowrate of between about 250-450 mL/min.

4. The system of claim 1, wherein the hemodialysis machine is configured to operate for a period of about 30 minutes following a power outage.

5. The system of claim 1, wherein the hemodialysis machine is configured to operate at a voltage of 100-240 V and less than about 1200 Watts.

6. The system of claim 1, wherein the hemodialysis machine is configured to perform a dialysis treatment in said sorbent dialysis mode using no more than about 6 liters of tap water.

7. The system of claim 1, wherein the sorbent cartridge allows a flow of up to about 450 mL/min therethrough.

8. The system of claim 5, wherein the sorbent cartridge has a maximum pressure drop of about 1900 mm Hg when dialysate flows therethrough at said flow rate of about 450 mL/min.