Blood processing machine fluid circuit cartridge

• US 7,338,460 B2
• Filed: 03/23/2004
• Issued: 03/04/2008
• Est. Priority Date: 02/14/1997
• Status: Expired due to Term

• Current Assignee: Nxstage Medical Incorporated (Fresenius Medical Care AG)
• Original Assignee: Nxstage Medical Incorporated (Fresenius Medical Care AG)
• Inventors: Brugger, James M., Treu, Dennis M., Burbank, Jeffrey H.
• Primary Examiner(s): Bianco; Patricia
• Application Number:
  US10/808,207
• Publication Number:
  US 20040238416A1
• Time in Patent Office: 1,442 Days
• Field of Search: 604/4.01, 604/6.01, 604/6.05, 604 501- 504, 604/6.06, 604/6.09, 604/6.1, 604/6.11, 604/6.15, 604/6.16, 604/7, 422 44- 48, 210645-647, 210650-652, 210/739, 210/741, 210/744, 210/767, 210/85, 210 87- 90, 210/97, 210/98, 210/252, 210/253, 210/262, 210/929, 210/321.6, 210/321.71, 210/321.72, 210/416.1, 210/194, 210417-420, 210/195.1, 210/195.2, 137/1, 137/2, 137/9, 137/12, 137/14, 137/803, 137/825, 137/87.21, 137/118.01, 137/118.06, 137 8703- 874, 222133- 4, 222/129, 222206- 7, 222/209, 222211- 13
• US Class Current: 604/5.01
• CPC Class Codes: A61M 1/1611 Weight of the patient
• CPC Class Codes: A61M 1/1639 linked by membranes
• CPC Class Codes: A61M 1/34 Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
• CPC Class Codes: A61M 1/3401 Cassettes therefor
• CPC Class Codes: A61M 1/3403 Regulation parameters
• CPC Class Codes: A61M 1/341 by measuring the filtrate rate or volume
• CPC Class Codes: A61M 1/342 Adding solutions to the blood, e.g. substitution solutions for preventing coagulation A61M1/3672
• CPC Class Codes: A61M 1/3441 Substitution rate control as a function of the ultrafiltration rate
• CPC Class Codes: A61M 1/3444 in which the collected ultra-filtrate expels an equal volume of substitution fluid from a reservoir
• CPC Class Codes: A61M 1/3448 by mechanically linked pumps in both ultra-filtrate and substitution flow line
• CPC Class Codes: A61M 1/3458 having electrolytes not present in the dialysate
• CPC Class Codes: A61M 1/361 before treatment
• CPC Class Codes: A61M 1/3612 after treatment
• CPC Class Codes: A61M 1/362223 the interface being evacuated interfaces to enhance contact
• CPC Class Codes: A61M 1/36224 with sensing means or components thereof
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/36226 Constructional details of cassettes, e.g. specific details on material or shape
• CPC Class Codes: A61M 1/362262 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/362265 Details of valves
• CPC Class Codes: A61M 1/3626 Gas bubble detectors
• CPC Class Codes: A61M 1/3639 : Blood pressure control, pressure transducers specially adapted therefor
• CPC Class Codes: A61M 1/3646 : Expelling the residual body fluid after use, e.g. back to the body
• CPC Class Codes: A61M 1/367 : Circuit parts not covered by the preceding subgroups of group A61M1/3621
• CPC Class Codes: A61M 2205/126 : with incorporated membrane filters
• CPC Class Codes: A61M 2205/128 : with incorporated valves
• CPC Class Codes: A61M 2205/15 : Detection of leaks
• CPC Class Codes: A61M 2205/3306 : Optical 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 2205/35 : Communication
• CPC Class Codes: A61M 2205/3553 : remote, e.g. between patient's home and doctor's office
• CPC Class Codes: A61M 2205/3569 : sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/502 : User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/505 : Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/60 : with identification means
• CPC Class Codes: A61M 2205/6018 : providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/6072 : Bar codes
• CPC Class Codes: A61M 39/0208 : Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: Y10S 210/929 : Hemoultrafiltrate volume measurement or control processes

Abstract

A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a fluid processing cartridge for mounting as an integrated unit on a fluid processing machine and for removal as an integrated unit from the fluid processing machine.

Claims

1. A disposable fluid circuit for use in a blood processing machine, comprising:

a fluid circuit having tubular and flexible panel-shaped portions;

a support, said tubular and flexible panel-shaped portions being mounted in said support;

said tubular and flexible panel-shaped portions being adapted for conveying blood and at least one other fluid consumed by a blood treatment operation;

said support exposing at least some of said tubular and flexible panel-shaped portions on opposite sides of said support whereby opposing actuators and/or sensors of a blood treatment machine can engage them on opposing sides thereof;

said support panel-shaped portions being held in an overlying relationship by said support.

2. A circuit as in claim 1, wherein said support includes a planar member with cutouts aligned with at least some of said tubular and flexible panel-shaped portions and thereby expose said at least some of said tubular and flexible panel-shaped portions.

3. A circuit as in claim 2, wherein said support comprises a generally planar member and said at least some of said tubular and flexible panel-shaped portions are held in a planar arrangement by it.

4. A circuit as in claim 1, further comprising a blood filter supported by said support.

5. A circuit as in claim 1, wherein at least one of said flexible panel-shaped portions overlie a recess-shape portion of said support.

9. A circuit as in claim 1, sheet portion is a portion of multiple panel-shaped portions held in an overlying relationship by said flat tray-shaped member.

6. A disposable fluid circuit for use in a blood processing machine, comprising:

a flat tray-shaped member having at least one cutout and at least one recess formed therein;

a fluid circuit having at least one tubular portion overlying said cutout and at least one sheet portion overlying said recess;

said sheet portion having a flow channel on an inside thereof;

said tubular and flexible panel-shaped portions being adapted for conveying blood and at least one other fluid consumed by a blood treatment operation.

7. A circuit as in claim 6, further comprising a blood filter supported by said support.

8. A circuit as in claim 6, wherein said flat tray-shaped member holds said fluid circuit in a generally planar arrangement.

10. A disposable fluid circuit for use in a blood processing machine, comprising:

a fluid circuit having flexible panel-shaped portions with flat walls that convey fluid between the flat walls;

a support that holds the flexible panel-shaped portions, exposing at least one of the flexible panel-shaped portions to opposing actuators and/or sensors of a blood treatment machine which engages them;

the panel-shaped portions being held in mutually-overlying relationship by the support such that the panel shaped portions overlap;

the overlying panel-shaped portions being held in mutual engagement by the blood blood-processing machine and confined such that a flow in one of the panel-shaped portions applies a force to the other of the panel-shaped portions.

11. A circuit as in claim 10, further comprising a blood filter supported by the support.

12. A circuit as in claim 10, wherein the support includes a planar member with cutouts aligned with at least some of the tubular and flexible panel-shaped portions and thereby expose the at least some of the tubular and flexible panel-shaped portions.

13. A circuit as in claim 10, wherein the support comprises a generally planar member and the at least some of the tubular and flexible panel-shaped portions are held in a planar arrangement by it.

14. A circuit as in claim 10, wherein at least one of the flexible panel-shaped portions overlies a recess-shape portion of the support.

15. A disposable fluid circuit for use in a blood processing machine, comprising:

a fluid circuit having tubular and flexible panel-shaped portions;

a support, said tubular and flexible panel-shaped portions being mounted in said support;

each of said tubular and flexible panel-shaped portions being adapted for conveying at least one of blood and at least one other fluid processed in a blood treatment operation;

said support exposing at least some of said tubular and flexible panel-shaped portions on opposite sides of said support whereby opposing actuators and/or sensors of a blood treatment machine can engage them on opposing sides thereof;

said support panel-shaped portions being held in an overlying relationship by said support such that said panel-shaped portions are shaped by engagement with said blood processing machine.

16. A circuit as in claim 15, wherein said support includes a planar member with cutouts aligned with at least some of said tubular and flexible panel-shaped portions and thereby expose said at least some of said tubular and flexible panel-shaped portions.

17. A circuit as in claim 16, wherein said support comprises a generally planar member and said at least some of said tubular and flexible panel-shaped portions are held in a planar arrangement by it.

18. A circuit as in claim 15, further comprising a blood filter supported by said support.

19. A circuit as in claim 15, wherein at least one of said flexible panel-shaped portions overlie a recess-shape portion of said support.

20. A disposable fluid circuit for use in a blood processing machine, comprising:

a flat tray-shaped member having at least one cutout and at least one recess formed therein;

a fluid circuit having at least one tubular portion overlying said cutout and at least one sheet portion overlying said recess;

said sheet portion having a flow channel on an inside thereof;

said sheet portions defining a fluid conveyance that conveys at least one other fluid consumed by a blood treatment operation.

21. A circuit as in claim 20, further comprising a blood filter supported by said support.

22. A circuit as in claim 20, wherein said flat tray-shaped member holds said fluid circuit in a generally planar arrangement.

23. A circuit as in claim 20, sheet portion is a portion of multiple panel-shaped portions held in an overlying relationship by said flat tray-shaped member.