Blood treatment cartridge and blood processing machine with slot

• US 20050020960A1
• Filed: 08/06/2004
• Published: 01/27/2005
• Est. Priority Date: 05/24/2001
• Status: Abandoned Application

• Current Assignee: Nxstage Medical Incorporated (Fresenius SE & Co. KGaA)
• Original Assignee: Nxstage Medical Incorporated (Fresenius SE & Co. KGaA)
• Inventors: Brugger, James M., Treu, Dennis M., Burbank, Jeffrey H.
• Application Number:
  US10/913,926
• Publication Number:
  US 20050020960A1
• Time in Patent Office: Days
• US Class Current: 604/4.10
• CPC Class Codes: A61M 1/15625 the reservoirs acting as balance chambers
• 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 1/3444 in which the collected ultra-filtrate expels an equal volume of substitution fluid from a reservoir
• 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 1/362265 Details of valves
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• 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 2205/6018 providing set-up signals for the apparatus configuration

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 blood treatment system, comprising:

a blood processing machine having a slot with multiple actuators and sensors located within said slot;

a fluid circuit including blood lines connectable to a patient blood access and fluid lines connectable to a source of fluid used in performing a blood treatment;

a generally planar support element supporting said blood and fluid lines in a generally planar arrangement forming a cartridge;

said blood processing machine having at least one engagement element to engage said planar support element to position and orient it within said slot when said cartridge is placed in said slot;

said planar support element being configured to position and orient various portions of said fluid circuit such that they are in position to be engaged by said multiple actuators and sensor when said cartridge is placed within said slot.

2. A system as in claim 1, wherein said planar support element includes a tray-shaped element.

3. A system as in claim 1, further comprising a latching mechanism configured to close said slot.

4. A system as in claim 1, wherein said planar support element includes a plastic tray.

5. A system as in claim 1, wherein said planar support element includes a key to fit in only one orientation in said slot.

6. A system as in claim 1, wherein:

said fluid circuit includes at least one of containers, peristaltic pump headers, sensing stations, and valve stations;

said blood processing machine includes equipment engageable with said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations; and

said planar support element is configured to expose said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations for engagement with said equipment on said fluid processing machine.

7. A system as in claim 1, wherein said blood processing machine includes an engagement element configured to engage said planar support element and thereby position and orient said cartridge within said slot when said cartridge is placed in said slot.

8. A system as in claim 1, wherein said blood processing machine includes a chassis and a door and said slot is defined by a gap between said chassis and said door.

9. A system as in claim 1, wherein said blood processing machine includes a chassis and a door and said slot is defined by a gap between said chassis and said door, said door and said chassis being connected by rails and said door being movable with respect to said chassis such that when said cartridge is placed in said slot said slot is closed around said cartridge.

10. A system as in claim 1, wherein said planar support element includes a tray-shaped element and said tray-shaped element includes chamber support portions to accommodate the expansion of portions of said fluid circuit.

11. A system as in claim 1, wherein said planar support element includes a tray-shaped element, said tray-shaped element includes chamber support portions to accommodate the expansion of portions, and said blood processing machine includes door chambers to receive said chamber support portions.

12. A blood treatment system, comprising:

a blood processing machine having a slot with multiple actuators and sensors located within said slot;

a fluid circuit having fluid lines and used for performing a treatment on a patient;

a generally planar support element supporting fluid circuit in a generally planar arrangement forming a cartridge;

said fluid circuit includes at least one of containers, peristaltic pump headers, sensing stations, and valve stations;

said blood processing machine including equipment engageable with said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations; and

said planar support element is configured to expose said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations for engagement with said equipment on said fluid processing machine when said cartridge is inserted in said slot.

13. A system as in claim 12, wherein said planar support element is configured to position and orient said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations such that they are in position to be engaged by said equipment when said cartridge is placed within said slot.

14. A system as in claim 12, wherein said blood processing machine includes an engagement element configured to engage said planar support element and thereby position and orient said cartridge within said slot when said cartridge is placed in said slot.

15. A system as in claim 12, wherein said blood processing machine includes a chassis and a door and said slot is defined by a gap between said chassis and said door.

16. A system as in claim 12, wherein said blood processing machine includes a chassis and a door and said slot is defined by a gap between said chassis and said door, said door and said chassis being connected by rails and said door being movable with respect to said chassis such that when said cartridge is placed in said slot said slot is closed around said cartridge.

17. A system as in claim 12, wherein said planar support element includes a tray-shaped element.

18. A system as in claim 12, further comprising a latching mechanism configured to close said slot.

19. A system as in claim 12, wherein said planar support element includes a plastic tray.

20. A system as in claim 12, wherein said planar support element includes a key to fit in only one orientation in said slot.

21. A system as in claim 12, wherein said planar support element includes a tray-shaped element and said tray-shaped element includes chamber support portions to accommodate the expansion of portions of said fluid circuit.

22. A system as in claim 12, wherein said planar support element includes a tray-shaped element, said tray-shaped element includes chamber support portions to accommodate the expansion of portions, and said blood processing machine includes door chambers to receive said chamber support portions.

23. A blood treatment system, comprising:

a blood processing machine having a slot;

said blood processing machine being configured such that said slot may be opened and closed;

said slot having spring-relieved engagement portions on at least one of first and second sides of said slot;

a fluid circuit including blood lines connectable to a patient blood access and fluid lines connectable to a source of fluid used in performing a blood treatment;

a generally planar support element supporting said blood and fluid lines in a generally planar arrangement forming a cartridge;

said planar support element being configured to position and orient various portions of said fluid circuit with respect to said spring-relieved portions such that when said cartridge is placed in said slot and said slot is closed, said spring relieved portions apply a pressure against said various portions of said fluid circuit.

24. A system as in claim 23, wherein said planar support element includes a tray-shaped element.

25. A system as in claim 23, further comprising a latching mechanism configured to close said slot.

26. A system as in claim 23, wherein said planar support element includes a plastic tray.

27. A system as in claim 23, wherein said planar support element includes a key to fit in only one orientation in said slot.

28. A system as in claim 23, wherein:

said fluid circuit includes at least one of containers, peristaltic pump headers, sensing stations, and valve stations;

said blood processing machine includes equipment engageable with said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations; and

said planar support element is configured to expose said at least one of said containers, peristaltic pump headers, sensing stations, and valve stations for engagement with said equipment on said fluid processing machine.

29. A system as in claim 23, wherein said blood processing machine includes an engagement element configured to engage said planar support element and thereby position and orient said cartridge within said slot when said cartridge is placed in said slot.

30. A system as in claim 23, wherein said planar support element includes a tray-shaped element and said tray-shaped element includes chamber support portions to accommodate the expansion of portions of said fluid circuit.

31. A system as in claim 23, wherein said planar support element includes a tray-shaped element, said tray-shaped element includes chamber support portions to accommodate the expansion of portions, and said blood processing machine includes door chambers to receive said chamber support portions.