Disposable components for fluid line autoconnect systems and methods

Patent metadata

Field	Value
Publication number	US-9839775-B2
Application number	US-201414466437-A
Country	US
Kind code	B2
Filing date	Aug 22, 2014
Priority date	Jan 23, 2008
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

Components for a medical infusion fluid handling system, such as an APD system, in which one or more lines (such as solution lines), spikes or other connection ports may be automatically capped and/or de-capped. This feature may provide advantages, such as a reduced likelihood of contamination since no human interaction is required to de-cap and connect the one or more lines, the spikes or the other connection ports. For example, a fluid handling cassette may include one or more caps that cover a corresponding spike and include a raised and/or recessed feature to assist in removal of the one or more caps from the cassette. A solution line cap may include a hole and a recess, a groove or other feature to engage with a spike cap and enable removal of the spike cap.

First claim

The invention claimed is:

1. A disposable component system for use with a fluid line connection system of a medical infusion system, the disposable component system comprising:
a fluid handling cassette comprising:
a generally planar body with at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid;
a solution line spike located at a first end of the body, the solution line spike being in fluid communication with the at least one pump chamber via at least one flowpath of the plurality of flowpaths; and

a spike cap having an inner surface configured to removably cover the solution line spike, wherein an outer surface of the spike cap includes a first raised feature that extends outwardly away from a longitudinal axis of the spike cap to aid in removal of the spike cap for connection of the solution line spike to a solution line, a second raised feature that extends outwardly away from the longitudinal axis of the spike cap to directly engage a groove in an inner surface of a solution line cap covering the solution line to engage the spike cap and the solution line cap directly with each other, and a third raised feature between the first and second raised features that extends outwardly away from the longitudinal axis of the spike cap and is configured as a stop for the solution line cap when the spike cap engages the solution line cap.

2. The disposable component system of claim 1 , wherein the fluid line connection system is a peritoneal dialysis system and the spike cap is removed prior to commencement of a peritoneal dialysis therapy.

3. The disposable component system of claim 1 , wherein the cassette further comprises a skirt arranged around the solution line spike to receive a proximal end of the spike cap.

4. The disposable component system of claim 3 , wherein there is a recess between the skirt and the solution line spike.

5. The disposable component system of claim 4 , wherein the spike cap, the skirt, and the recess are arranged to aid in forming a seal between the spike cap and the skirt.

6. The disposable component system of claim 1 , further comprising the solution line cap removably connected to the solution line.

7. The disposable component system of claim 6 , wherein a portion of the solution line cap is a flexible material or silicone rubber.

8. The disposable component system of claim 7 , wherein the groove of the solution line cap is configured to engage with the second raised feature of the spike cap after the second raised feature of the spike cap has entered the solution line cap and stretched the flexible material.

9. The disposable component system of claim 8 , wherein engagement of the solution line cap with the spike cap aids in removal of the spike cap from the solution line spike.

10. The disposable component system of claim 6 , wherein the groove of the solution line cap is circumferential within the inner surface of the solution line cap.

11. The disposable component system of claim 10 , wherein the groove is symmetrical.

12. The disposable component system of claim 10 , wherein the groove is asymmetrical.

13. The disposable component system of claim 6 , wherein the groove of the solution line cap is configured to conform with the second raised feature of the spike cap.

14. The disposable component system of claim 1 , wherein the first raised feature of the spike cap is a flange.

15. The disposable component system of claim 14 , wherein the flange is symmetrical.

16. The disposable component system of claim 14 , wherein the flange is asymmetrical.

17. The disposable component system of claim 1 , wherein the first raised feature is configured for engagement with the fluid line connection system.

18. The disposable component system of claim 1 , wherein a main axis of the solution line spike is in substantially a same plane as the generally planar body of the fluid handling cassette.

19. The disposable component system of claim 1 , wherein the fluid handling cassette includes a plurality of solution line spikes.

20. The disposable component system of claim 19 , wherein the plurality of solution line spikes includes at least three solution line spikes.

21. The disposable component system of claim 1 , further comprising:
the solution line cap for removable attachment to the solution line, wherein the inner surface of the solution line cap includes the groove for direct engagement with the second raised feature of the spike cap.

22. The disposable component system of claim 21 , wherein the disposable component system further comprises indicia associated with the solution line.

23. The disposable component system of claim 22 , wherein the indicia are configured to interact with the medical infusion system to affect at least one function of the medical infusion system.

24. The disposable component system of claim 1 , wherein the solution line spike comprises a distal tip at or near a longitudinal axis of the solution line spike, so that a lumen of the solution line spike is not centered on the longitudinal axis of the solution line spike, allowing the distal tip to be better aligned to puncture a septum or a membrane of the solution line.

25. A disposable component system for use with a fluid line connection system of a peritoneal dialysis system, the disposable component system comprising:
a spike cap having an inner surface configured to removably cover a spike of a fluid handling cassette, wherein an outer surface of the spike cap includes a first raised feature that extends outwardly away from a longitudinal axis of the spike cap to aid in removal of the spike cap from the spike for connection of the spike to a solution line prior to commencement of a peritoneal dialysis therapy, a second raised feature that extends outwardly away from the longitudinal axis of the spike cap and is configured for direct engagement with an inner recess of a solution line cap to engage the spike cap and the solution line cap directly with each other, and a third raised feature between the first and second raised features that extends outwardly away from the longitudinal axis of the spike cap and is configured as a stop for the solution line cap when the spike cap engages the solution line cap.

Assignees

• Deka Products Lp

Inventors

• Mcgill David W
• Scarpaci Jacob W
• Dale James D
• Helmore Simon C
• Demers Jason A

Classifications

• F04B43/073

  the actuating fluid being controlled by at least one valve · CPC title

• F04B53/22

  Arrangements for enabling ready assembly or disassembly · CPC title

• F04B43/0054

  particularities of the flexible members · CPC title

• A61M2205/6036

  characterised by physical shape, e.g. array of activating switches · CPC title

• G16H20/40

  relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture · CPC title