Registration of fluid circuit components in a blood treatment device

• US 7,776,001 B2
• Filed: 03/08/2004
• Issued: 08/17/2010
• 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): HAND, MELANIE JO
• Application Number:
  US10/796,913
• Publication Number:
  US 20040243048A1
• Time in Patent Office: 2,353 Days
• Field of Search: 604 401- 601
• 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 blood treatment system, comprising:

a blood treatment machine having a first opposing portion with a first surface and a second opposing portion with a second surface, the first and second opposing portions being spaced apart such that the first surface is parallel to the second surface with a gap formed therebetween, said first surface and said second surface being adjacent to the gap and facing each other;

said blood treatment machine having at least one actuator and at least one sensor disposed on at least said first opposing portion;

a support attached to said blood treatment machine;

a cartridge panel holding a fluid circuit, said fluid circuit having at least one portion to be aligned with said at least one actuator and at least another portion to be aligned with said at least one sensor prior to engagement therebetween;

said support being configured to permit said cartridge panel to be rested thereupon when said cartridge panel is inserted in said gap;

said support and said cartridge panel being configured such that said fluid circuit at least one and at least another portions are aligned respectively with said at least one actuator and said at least one sensor;

said blood treatment machine first and second opposing portions being movable with respect to each other to close around said cartridge panel thereby to cause said at least one actuator to engage said at least one portion and said at least one sensor to engage said at least another portion, said first and second surfaces remaining parallel to one another during movement of the first and second opposing portions.

2. A system as in claim 1, wherein said at least one actuator includes multiple peristaltic pumps.

3. A system as in claim 1, wherein said first and second opposing portions are connected by rails at bottom ends thereof and said support includes at least a portion of said rails.

4. A system as in claim 1, wherein:

said first and second opposing portions are movable in a single motion;

said fluid circuit at least one portion includes at least three tube portions configured to be engaged with peristaltic pumps;

said at least one actuator includes at least three peristaltic pumps;

whereby said tube portions and said peristaltic pumps are caused to be engaged by a movement of said first and second opposing portions.

5. A system as in claim 1, wherein said cartridge panel includes cutouts to expose said fluid circuit at least one and said at least another portions to said at least one actuator and said at least one sensor, respectively.

6. A system as in claim 1, wherein said blood treatment machine is configured to substantially equalize a quantity of fluid removed from a patient with a quantity of fluid added to the patient during a blood treatment.

8. A system as in claim 4, wherein said first and second opposing portions are connected by rails at bottom ends thereof and said support includes at least a portion of said rails.

9. A system as in claim 6, wherein:

said first and second opposing portions are movable in a single motion;

said fluid circuit at least one portion includes at least three tube portions configured to be engaged with peristaltic pumps;

said at least one actuator includes at least three peristaltic pumps;

whereby said tube portions and said peristaltic pumps are caused to be engaged by a movement of said first and second opposing portions.

14. The system of claim 1, wherein the second opposing portion carries a user interface panel.

7. A blood treatment system, comprising:

a blood treatment machine with first and second opposing portions spaced apart to form a gap therebetween;

said blood treatment machine having at least one actuator and at least one sensor disposed on at least said first opposing portion;

a support attached to said blood treatment machine;

a cartridge panel holding a fluid circuit, said fluid circuit having at least one portion to be aligned with said at least one actuator and at least another portion to be aligned with said at least one sensor prior to engagement therebetween;

said support being configured to permit said cartridge panel to be rested thereupon when said cartridge panel is inserted in said gap;

said support and said cartridge panel being configured such that said fluid circuit at least one and at least another portions are aligned respectively with said at least one actuator and said at least one sensor;

said blood treatment machine first and second opposing portions being movable with respect to each other to close around said cartridge panel thereby to cause said at least one actuator to engage said at least one portion and said at least one sensor to engage said at least another portion;

wherein said first and second opposing portions are connected by rails at bottom ends thereof and said support includes at least a portion of said rails.

10. A system as in claim 7, wherein said cartridge panel includes cutouts to expose said fluid circuit at least one and said at least another portion to said at least one actuator and said at least one sensor, respectively.

11. A system as in claim 7, wherein said blood treatment machine is configured to substantially equalize a quantity of fluid removed from a patient with a quantity of fluid added to the patient during a blood treatment.

18. A system as in claim 7, wherein said at least one actuator includes multiple peristaltic pumps.

19. The system of claim 7, wherein the second opposing portion carries a user interface panel.

12. A blood treatment system, comprising:

a blood treatment machine with first and second opposing portions spaced apart to form a gap therebetween;

the blood treatment machine having at least one actuator and at least one sensor disposed on at least the first opposing portion, the at least one actuator including at least one pump;

a disposable cartridge panel that supports and holds a fluid circuit, the fluid circuit having at least one portion to be aligned with the at least one actuator and at least another portion to be aligned with the at least one sensor prior to engagement therebetween;

a support attached to the blood treatment machine and configured to permit the cartridge panel to be rested thereupon when the cartridge panel is inserted in the gap;

the support and the cartridge panel being configured such that the fluid circuit at least one and at least another portions are aligned respectively with the at least one actuator and the at least one sensor;

the blood treatment machine first and second opposing portions being movable with respect to each other to close around the cartridge panel thereby to cause the at least one actuator to engage the at least one portion and the at least one sensor to engage the at least another portion,

wherein said second opposing portion carries a user interface panel, and the first and second opposing portions are slidably interconnected.

13. The system of claim 12, wherein the at least one actuator includes at least two pumps.

15. The system of claim 12, wherein the first opposing portion constitutes a major portion of the blood treatment machine and the second opposing portion is movably attached to the first opposing portion.

16. The system of claim 12, wherein the first and second opposing portions have opposing facing surfaces that lie adjacent the cartridge panel, which opposing facing surfaces are parallel and remain parallel when closed around the cartridge panel.

17. The system of claim 12, wherein the first and second opposing portions are slidably interconnected by rails.