Connection system for multi-lumen catheter

• US 8,852,168 B2
• Filed: 12/26/2013
• Issued: 10/07/2014
• Est. Priority Date: 06/20/2005
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Barron, William R., Bright, Jeffrey D.
• Primary Examiner(s): STIGELL, THEODORE J
• Application Number:
  US14/141,209
• Publication Number:
  US 20140107614A1
• Time in Patent Office: 285 Days
• Field of Search: 604533-536
• US Class Current: 604/535
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1077 Adapters, e.g. couplings adapting a connector to one or several other connectors
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/105 Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes multi-channel connectors in general F16L37/56

Abstract

A catheter connection system and a method of connecting the catheter connection system to a catheter. The catheter connection system includes a hub assembly and a collar. The hub assembly includes a cannula extending from a distal end thereof, and a collet defining an inner surface spaced apart from the cannula to permit passage of a catheter wall between the body and the cannula.

Claims

1. A catheter connection system, comprising:

a cannula in fluid communication with a tube;

a collet having a length surrounding the cannula with an inner surface spaced from an outer surface of the cannula to permit passage of a catheter wall therebetween, the collet including at least two locking arms, each locking arm including at least one protrusion; and

a collar including a compression ring incorporated into a distal section thereof and at least two recesses in a proximal section that receive, respectively, the at least one protrusion on each locking arm to secure the collar to the collet.

2. The catheter connection system of claim 1, wherein the collet includes tapered surfaces between a proximal end of the collet and the at least two recesses, the locking arms flexing outward as the protrusions thereof slide over the tapered surfaces.

3. The catheter connection system of claim 1, further comprising a core member surrounding a proximal end of the cannula.

4. The catheter connection system according to claim 1, wherein the cannula comprises a first cannula member and a second cannula member to be received, respectively, in a first lumen and a second lumen of a multi-lumen catheter.

5. The catheter connection system according to claim 4, further comprising a bifurcation molded over a proximal end of a core member and the tube, the tube comprising a first extension tube in fluid communication with the first cannula and a second extension tube in fluid communication with the second cannula.

6. The catheter connection system according to claim 4, wherein the first and second cannula members are slightly larger than the first and second lumens such that a compressive fit is formed when the cannula members are slid into the lumens.

7. A method of connecting a catheter connection system to a catheter, comprising:

inserting a cannula into a lumen of a catheter to position an outer wall of the catheter between the cannula and a collet, the collet including at least two locking arms, each locking arm including at least one protrusion;

sliding a collar over the catheter and collet toward a proximal end of the collet, the collar including a compression ring incorporated into a distal section thereof and at least two recesses sized to receive, respectively, the at least one protrusion on each locking arm; and

moving the collet locking arm protrusions into the collar recesses to secure the collar to the collet.

8. The method according to claim 7, wherein the cannula comprises a first cannula member and a second cannula member, the inserting step further comprising inserting the first cannula member and the second cannula member into a first catheter lumen and a second catheter lumen of a multi-lumen catheter.

9. The method according to claim 8, wherein the first and second cannula members are slightly larger than the first and second catheter lumens, the inserting step further comprising providing a compressive fit between the first and second cannula members and the first and second catheter lumens.

10. The method according to claim 7, wherein an audible or tactile indication verifies securement of the collar to the collet.