Portal assembly and catheter connector

• US 5,562,618 A
• Filed: 01/21/1994
• Issued: 10/08/1996
• Est. Priority Date: 01/21/1994
• Status: Expired due to Term

• Current Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Original Assignee: Sims Deltec, Inc.
• Inventors: Johnson, Theodore A., Beling, William L., Glantz, Jerald, Cai, Qingsheng
• Primary Examiner(s): McDermott, Corrine M.
• Assistant Examiner(s): GRING, NOELLE K
• Application Number:
  US08/184,655
• Time in Patent Office: 991 Days
• Field of Search: 128/912, 285/239, 285/240, 285/241, 285/242, 285/243, 285/255, 285/256, 285/257, 285/258, 285/321, 285/323, 285/341, 285/419, 285/921, 285/158, 604/86, 604/8-10, 604/93, 604/174, 604/175, 604/190, 604/185, 604/212, 604/905, 604/283
• US Class Current: 604/288.02
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1072 with a septum present in the connector
• 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: A61M 39/12 for joining a flexible tube to a rigid attachment

Abstract

A portal assembly includes a port with at least one resealable septum, and a tube extending from the port with the tube being sized to be received inside a catheter, an angled surface surrounding the tube wherein the angled surface diverges away from the tube in a direction away from the port, and sleeve structure for forcing the end of the catheter into the angled surface, thereby forcing the end of the catheter radially inwardly toward the tube and forming a thickened portion adjacent the end of the catheter to seal and hold the catheter. In a dual port construction, the outlet tube are parallel to one another at their distal ends, and the sleeve structure forces the end of the catheter into the angled surface, thereby forcing the end of the catheter radially inwardly toward the tubes and forming a thickened portion adjacent the end of the catheter to seal and hold the catheter and to prevent cross-talk between lumens of a dual lumen catheter.

Claims

1. A portal assembly for connecting to a catheter having an end with a tip and a side wall comprising:

a port with a first resealable septum;

the port including a first tube extending from the port to a distal end, the first tube sized to be received inside the catheter;

the port including an angled surface surrounding the first tube, the angled surface diverging away from the first tube in a direction away from the port; and

sleeve means for forcing the tip of the end of the catheter into the angled surface thereby forcing the side wall of the end of the catheter radially inwardly against the first tube and also forming a thickened portion of the catheter when the end of the catheter is positioned on the distal end of first tube.

2. The portal assembly of claim 1, wherein the port further includes a second resealable septum, and a second tube extending from the port with a portion generally parallel to the first tube.

3. The portal assembly of claim 2, wherein the port includes a housing defining first and second internal chambers accessible through the first and second resealable septums, respectively, wherein the first tube and the second tube are angled tubes each including a proximal end and a distal end, the proximal ends being mounted to the housing of the port, each of the first and second tubes in fluid communication with the first and second internal chambers, respectively, the proximal ends of the first and second tubes extending transversely to one another, the distal ends of the first and second tubes extending parallel to one another.

4. The portal assembly of claim 2, wherein the port includes first and second rings, the first ring surrounding the first septum, the second ring surrounding the second septum, the first ring having a first continuous portion having a cross-section defined by a first semicircle of a first diameter, the second ring having a second continuous portion having a cross-section defined by a second semicircle of a second diameter, the second diameter differently sized from the first diameter.

5. The portal assembly of claim 1, wherein the sleeve means includes a sleeve engageable with the catheter when the end of the catheter is positioned on the distal end of the first tube, the sleeve having an inside diameter smaller than an outside diameter of an end of the catheter when the end of the catheter is positioned on the end of the first tube.

6. The portal assembly of claim 5, wherein the sleeve includes an angled tip diverging away from the port.

8. The portal assembly of claim 5, wherein the sleeve means includes a lock ring extending from the sleeve, and wherein the port includes a projecting bayonet, and the lock ring includes a cam slotted surface for engaging the bayonet to hold the lock ring to the port, the cam slotted surface including an angled portion.

9. The portal assembly of claim 8, further comprising mounting means for mounting the lock ring to the sleeve wherein the lock ring and the sleeve are separate elements mounted to one another to form a single arrangement, wherein the lock ring is further rotatable relative to the sleeve.

10. The portal assembly of claim 9, wherein the lock ring is longitudinally moveable relative to the sleeve.

11. The portal assembly of claim 8, wherein the cam slotted surface of the lock ring includes an overcenter portion.

12. The portal assembly of claim 5, wherein the sleeve includes a strain relief end.

13. The portal assembly of claim 1, a second resealable septum, wherein the portal assembly further includes a second tube extending from the port generally parallel to the first tube, a metallic housing, and wherein the angled surface forms a part of a metallic insert mounted to the housing, the insert including two bayonets for engagement by the sleeve means, and a passageway construction for receipt of the first and second tubes.

14. The portal assembly of claim 1, wherein the port defines a plurality of suture holes, each suture hole having a first cylindrical passage, each suture hole having a lead-in sized larger than the first cylindrical passage and tapering to the first cylindrical passage.

15. The portal assembly of claim 14, wherein the port defines a plurality of depressions, each depression positioned adjacent one of the suture holes at an end opposite to an end defining the lead-in of each suture hole.

16. The portal assembly of claim 1, wherein the port defines an internal chamber, the septum permitting access to the internal chamber, the first tube in fluid communication with the internal chamber, the internal chamber including a bottom surface facing opposite the septum wherein the bottom surface is defined by a complex curve including a first large radius defining a central portion and second smaller radius defining a periphery around the central portion.

17. The portal assembly of claim 1, further comprising a catheter with an end, the end of the catheter positioned on the distal end of the first tube, the sleeve means forcing the end of the catheter into the angled surface thereby forcing the end of the catheter radially inwardly against the first tube, the end of the catheter having a thickened portion formed by the sleeve means.

7. The portal assembly of 5, wherein the sleeve is made of plastic.

18. A portal assembly comprising:

a port including a body and two resealable septums, the body and the resealable septums cooperating to define two separated internal chambers each communicating with one of the septums, the internal chambers defining generally circular inner perimeters; and

two separate angled outlet tubes each mounted to the body, each outlet tube including a proximal end and a distal end and extending from the port in a direction from the proximal end to the distal end, each outlet tube interconnected to one of the two internal chambers, the proximal ends of each outlet tube extending perpendicular to the circular perimeter defined by each respective internal chamber, the proximal ends extending transversely at an angle toward one another, the distal ends extending parallel to one another.

19. The portal assembly of claim 18, further comprising a separate insert mounted to the body and extending from the body, the insert surrounding the distal ends of the outlet tubes.

20. A portal assembly for connecting to a catheter comprising:

a port with two resealable septums and two separate internal chambers each communicating with one of the septums, the port including first and second rings, the first ring surrounding the first septum, the second ring surrounding the second septum, the first ring having a first continuous portion having a cross-section defined by a first semicircle of a first diameter, the second ring having a second continuous portion having a cross-section defined by a second semicircle of a second diameter, the second diameter differently sized from the first diameter; and

two outlet tubes extending from the port in parallel directions, each outlet tube interconnected to one of the two internal chambers.

21. A portal assembly for connecting to a catheter having an end comprising:

a port with two resealable septums and two separated internal chambers each communicating with one of the septums;

the port including two angled outlet tubes extending from the port in parallel directions, each outlet tube interconnected to one of the two internal chambers;

the port including an angled surface surrounding both outlet tubes, the angled surface diverging away from the outlet tubes in a direction away from the port, and the angled surface including a central longitudinal axis wherein both outlet tubes are positioned on either side of the central axis;

a sleeve slidably positioned on an exterior of the catheter, the sleeve having an inside diameter smaller than an outside diameter of the end of the catheter when the end of the catheter is positioned on an end of the outlet tubes, the sleeve having a convexly shaped tip;

a lock ring rotatably mounted to the sleeve; and

means for rotatably securing the lock ring to the port wherein the end of the catheter adjacent tip of the sleeve and the angled surface is forced generally radially inwardly against the outlet tubes and also formed into a thickened portion when the end of the catheter is positioned on the outlet tubes of the port, the securing means including the port having a bayonet projecting from the port and the sleeve defining a cam slot for receiving the bayonet, the cam slot having an overcenter portion.

22. The portal assembly of claim 21, further comprising a catheter having an end, the catheter defining two lumens, each lumen receiving an outlet tube, the sleeve forcing the end of the catheter into the angled surface, thereby forcing the end of the catheter generally radially inwardly against the outlet tubes, the end of the catheter having a thickened portion.

23. A portal assembly for connecting to a catheter having an end comprising:

a port with a first resealable septum;

the port including a first tube extending from the port and terminating at an end, the first tube sized to be received inside the catheter;

the port including a concavely-shaped surface surrounding the first tube, the concavely-shaped surface diverging away from the first tube in a direction away from the port, the concavely-shaped surface sized to engage an end of the catheter; and

a sleeve arrangement mounted to the port and engageable with the catheter when the end of the catheter is positioned on the end of first tube, the sleeve arrangement defining an inside diameter smaller than an outside diameter of the end of the catheter when the end of the catheter is positioned on the end of the first tube.

24. The portal assembly of claim 23, wherein the sleeve arrangement includes a convexly shaped tip diverging away from the port.

25. The portal assembly of claim 23, wherein the port further includes a second tube extending from the port generally parallel to the first tube, and wherein the concavely shaped surface also surrounds the second tube.

26. The portal assembly of claim 23, wherein the sleeve arrangement includes:

a sleeve having an end engageable with the catheter when the end of the catheter is positioned on the end of first tube; and

a lock ring surrounding a portion of the sleeve, the lock ring rotatably mounted to the sleeve, the lock ring selectively mounted to the port in a locked state.

27. The portal assembly of claim 26, wherein the lock ring is longitudinally moveable relative to the sleeve.

28. The portal assembly of claim 27, wherein the port includes a bayonet extending from the port, and wherein the lock ring includes a cam slot for receiving the bayonet, the cam slot including an angled portion, the cam slot including an overcenter portion.

29. The portal assembly of claim 23, wherein the port includes a bayonet extending from the port, and wherein the sleeve arrangement includes a cam slot for receiving the bayonet, the cam slot including an angled portion, the cam slot including an overcenter portion.

30. The portal assembly of claim 23, further comprising a catheter having an end positioned on the first tube, the end of the catheter engaged with the concavely-shaped surface of the port, the sleeve arrangement engaged with the catheter to mount the catheter to the port.

31. A portal assembly for connecting to a catheter having an end comprising:

a port with a first resealable septum;

the port including a first tube extending from the port and terminating at an end, the first tube sized to be received inside the catheter;

the port including a surface surrounding the tube positioned to engage an end of the catheter;

the port including a bayonet extending from the port; and

a sleeve arrangement engageable with the catheter when the end of the catheter is positioned on the end of the first tube, the sleeve arrangement defining an inside diameter smaller than an outside diameter of the end of the catheter when the end of the catheter is positioned on the end of the tube, the sleeve arrangement including a cam slot for receiving the bayonet, the cam slot including an angled portion, the cam slot including an overcenter portion.

32. The portal assembly of claim 31, wherein the port further includes a second resealable septum and a second tube extending from the port generally parallel to the first tube, and the surface also surrounding the second tube.

33. The portal assembly of claim 31, further comprising a catheter having an end positioned on the first tube, the end of the catheter engaged with surface of the port, the sleeve arrangement engaged with the catheter to mount the catheter to the port.

34. A portal assembly for connecting to a catheter having an end comprising:

a port with a first resealable septum;

the port including a first tube extending from the port and terminating at an end, the first tube sized to be received inside the catheter;

the port including a surface surrounding the tube positioned to engage an end of the catheter;

a sleeve having an end engageable with the catheter when the end of the catheter is positioned on the end of first tube; and

a lock ring surrounding a portion of the sleeve, the lock ring rotatably mounted to the sleeve, the lock ring longitudinally moveable relative to the sleeve, the lock ring selectively mounted to the port in a locked state.

35. The portal assembly of claim 34, wherein the port includes a bayonet extending from the port, and wherein the lock ring includes a cam slot for receiving the bayonet, the cam slot including an angled portion, the cam slot including an overcenter portion.

36. The portal assembly of claim 34, further comprising a catheter having an end positioned on the first tube, the end of the catheter engaged with surface of the port, the sleeve engaged with the catheter to mount the catheter to the port.