Dialysis systems, components, and methods

• US 9,526,820 B2
• Filed: 07/30/2010
• Issued: 12/27/2016
• Est. Priority Date: 08/04/2009
• Status: Active Grant

• Current Assignee: Fresenius Medical Care Holdings Incorporated (Fresenius Medical Care AG)
• Original Assignee: Fresenius Medical Care Holdings Incorporated (Fresenius Medical Care AG)
• Inventors: Beiriger, Michael James, Parks, Robert Dale, Kaintz, Ryan Christopher
• Primary Examiner(s): BASS, DIRK R
• Application Number:
  US13/387,800
• Publication Number:
  US 20120248017A1
• Time in Patent Office: 2,342 Days
• Field of Search: 210/143, 210/175, 210/232, 210/321.6, 210/257.1, 210/646, 604/28, 604/29
• US Class Current: 1/1
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 1/1605 Physical characteristics of the dialysate fluid
• CPC Class Codes: A61M 1/1629 with integral heat exchanger
• CPC Class Codes: A61M 1/1694 with recirculating dialysing liquid
• CPC Class Codes: A61M 1/1696 with dialysate regeneration
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3324 PH measuring means
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3365 Rotational speed
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/3379 Masses, volumes, levels of fluids in reservoirs, flow rates
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 2205/50 with microprocessors or computers

Abstract

A dialysis system including a housing, a dialysate pump disposed in the housing, and a dialysate line configured to be operatively connected to the dialysate pump such that the dialysate pump can pump dialysate through the dialysate line when the dialysate line is in fluid communication with a dialysate source.

Claims

1. A hemodialysis system, comprising:

a first module comprising a blood pump;

a blood line operatively connected to the blood pump such that the blood pump can pump blood through the blood line when the blood line is in fluid communication with a blood source;

a dialyzer fluidly connected to the blood line;

a second module that is separate from the first module, the second module comprising;

a dialysate pump that includes a rolling member, and

a slidable drawer movable between an open position extending from a housing of the second module and a closed position within the housing of the second module, the slidable drawer defining a recess formed complimentary to the rolling member and configured to receive the dialysate pump, and the slidable drawer being configured such that a member of the slidable drawer is lifted up towards the dialysate pump when the slidable drawer is moved to the closed position; and

a dialysate line secured to a dialysate component carrier that is configured to be supported by the member of the slidable drawer, the dialysate line extending across an aperture that is defined by the dialysate component carrier and that is configured to receive the dialysate pump, such that when the slidable drawer is moved to the closed position and lifted up towards the dialysate pump, the dialysate pump is received in the aperture, and the rolling member of the dialysate pump deflects the dialysate line into the recess in the slidable drawer so that when the dialysate line is in fluid communication with a dialysate source and when the rolling member is rotated, the rolling member applies pressure to the dialysate line to pump dialysate through the dialysate line, the dialysate line being fluidly connected to the dialyzer.

2. The dialysis system of claim 1, wherein the first and second modules are releasably secured to one another.

3. The dialysis system of claim 1, wherein the first module is positioned on top of the second module.

4. The dialysis system of claim 1, wherein the first module comprises at least one weight scale.

5. The dialysis system of claim 4, wherein the at least one weight scale is configured to be stored in a cavity formed in the first module.

6. The dialysis system of claim 4, wherein the at least one weight scale is pivotably connected to the side of the first module, such that the at least one weight scale is pivotable between an operational position in which the at least one weight scale is extended from the side of the first module to support a component of the dialysis system and a storage position within a cavity formed in the first module in which the at least one weight scale does not support a component of the dialysis system.

7. The dialysis system of claim 1, wherein the dialysate pump is a peristaltic pump.

8. The dialysis system of claim 1, wherein the dialysate component carrier is positioned below pumps of the dialysis machine such that any leak formed in components secured to the dialysate component carrier is prevented from contacting the pumps.

9. The dialysis system of claim 1, wherein, according to a position of the dialysate component carrier within the slidable drawer, any leak formed in components secured to the dialysate component carrier can be contained within the slidable drawer.

10. The dialysis system of claim 1, wherein the dialysate component carrier is positioned below pumps of the dialysis machine such that any leak formed in components secured to the dialysate component carrier are prevented from contacting the pumps.

11. The dialysis system of claim 4, wherein the at least one weight scale is slidably connected to the side of the first module, such that the at least one weight scale is slidable between an operational position in which the at least one weight scale is extended from the side of the first module to support a component of the dialysis system and a storage position within a cavity formed in the first module in which the at least one weight scale does not support a component of the dialysis system.