Method of using a multi-lumen catheter

• US 20050261665A1
• Filed: 07/27/2005
• Published: 11/24/2005
• Est. Priority Date: 12/18/2002
• Status: Active Grant

• Current Assignee: Medical Components, Inc.
• Original Assignee: Medical Components, Inc.
• Inventors: Voorhees, Earl
• Granted Patent: US 7,914,513 B2
• Time in Patent Office: Days
• US Class Current: 604/508
• CPC Class Codes: A61M 1/3661 for haemodialysis
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores making of catheters A61M25/0009
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10

Abstract

A multi-lumen catheter assembly with a two-piece hub is disclosed. The catheter includes a distal portion having a plurality of catheter lumens, wherein each of the plurality of catheter lumens includes a distal tip and a proximal lumen portion. The distal portion further includes a distal hub portion slidably disposed over the proximal lumen portion, wherein the distal hub portion includes a pivoting locking member. The catheter assembly further includes a proximal portion having a plurality of catheter extensions, wherein each of the plurality of catheter extensions fluidly communicates with at least one of the plurality of catheter lumens. The proximal portion also includes a proximal hub portion having a locking receiver, wherein the pivoting locking member is releasably engaged with the locking receiver.

Claims

1. A detachable hub for a catheter comprising:

a first portion having a first distal end, a first proximal end, and a longitudinal channel extending therethrough between the first distal end and the first proximal end;

wherein the first proximal end includes a pivoting locking member; and

a second portion having a second distal end, a second proximal end, wherein the second distal end includes a locking receiver, and wherein the longitudinal channel is sized to allow the first proximal end to be disposed over the second distal end such that the pivoting locking member is engageable with the locking receiver.

2. The detachable hub according to claim 1, wherein the pivoting locking member comprises a cam and wherein the locking receiver comprises a saddle, such that, when the first proximal end is disposed over the second portion-of the hub, the cam engages the saddle when the pivoting locking member is pivoted into a locking position.

3. The detachable hub according to claim 1, wherein the second portion further comprises a plurality of channels extending generally longitudinally therethrough.

4. The detachable hub according to claim 1, wherein the second distal end is constructed from a first material and the second proximal end is constructed from a second material.

5. The detachable hub according to claim 4, wherein the first material comprises tecoplast and the second material comprises pellethane.

6. The detachable hub according to claim 4, wherein the second distal end comprises a saddle, such that, when the first proximal end is disposed over the saddle, the pivoting locking member is aligned to engage the saddle.

7. The detachable hub according to claim 1, wherein the pivoting locking member further comprises a recess and the second proximal end comprises a projection extending therefrom, such that, when the pivoting locking member is engaged with the locking receiver, the projection is disposed within the recess.

8. The detachable hub according to claim 1, wherein the second portion further comprises a plurality of hub cannulae extending therethrough.

9. The detachable hub according to claim 8, wherein each of the plurality of hub cannulae has a generally D-shaped cross-section.

10. The detachable hub according to claim 8, wherein each of the plurality of hub cannulae has a generally round cross-section.

11. The detachable hub according to claim 1, wherein the pivoting locking member comprises a first locking member and a second locking member, and the locking receiver comprises a first locking receiver and a second locking receiver, and wherein the first locking member is engageable with the first locking receiver, and the second locking member is engageable with the second locking receiver.

12. A multi-lumen catheter assembly comprising:

a distal portion having;

a plurality of catheter lumens, wherein each of the plurality of catheter lumens includes a distal tip and a proximal lumen portion; and

a distal hub portion slidably disposed over the proximal lumen portion, wherein the distal hub portion includes a pivoting locking member; and

a proximal portion having;

a plurality of catheter extensions, wherein each of the plurality of catheter extensions fluidly communicates with at least one of the plurality of catheter lumens; and

a proximal hub portion having a locking receiver,

wherein the pivoting locking member is releasably engaged with the locking receiver.

13. The multi-lumen catheter assembly according to claim 12, wherein, when the pivoting locking member is disengaged from the locking receiver, the distal hub portion is separable from the proximal hub portion.

14. The multi-lumen catheter assembly according to claim 13, wherein the plurality of catheter extensions are separable from the plurality of catheter lumens.

15. The multi-lumen catheter assembly according to claim 12, wherein the pivoting locking member comprises a cam and wherein the locking receiver comprises a saddle, such that, when the pivoting locking member is engaged with the locking receiver, the cam is engaged with the saddle.

16. The multi-lumen catheter assembly according to claim 12, wherein the proximal hub portion further comprises a plurality of hub cannulae wherein each of the plurality of hub cannulae fluidly communicates with one of the plurality of catheter extensions.

17. The multi-lumen catheter assembly according to claim 16, wherein each of the plurality of hub cannulae has a generally D-shaped cross-section.

18. The multi-lumen catheter assembly according to claim 16, wherein each of the plurality of hub cannulae has a generally round cross-section.

19. The multi-lumen catheter assembly according to claim 12, wherein the pivoting locking member comprises a first locking member and a second locking member, and the locking receiver comprises a first locking receiver and a second locking receiver, and wherein the first locking member is engageable with the first locking receiver, and the second locking member is engageable with the second locking receiver.

20. A method of inserting a multi-lumen catheter assembly into a patient comprising:

inserting a distal end of each of a plurality of catheter lumens into a patient'"'"'s blood vessel;

connecting a proximal end of each of the plurality of catheter lumens to a tunneling device;

forming a subcutaneous tunnel with the tunneling device;

pulling the proximal ends of the plurality of catheter lumens through the subcutaneous tunnel;

disconnecting the tunneling device from the proximal ends of the plurality of catheter lumens;

sliding a first portion of a catheter hub over the proximal ends of the plurality of catheter lumens, wherein the first portion of the catheter hub comprises a pivoting locking member;

connecting a second portion of the catheter hub to each of the plurality of catheter lumens, wherein the second portion of the catheter hub comprises a locking receiver; and

engaging the pivoting locking member with the locking receiver.

21. The method according to claim 20, further comprising, prior to connecting the second portion of the catheter hub to each of the plurality of lumens, inserting a compression ring over each of the plurality of lumens proximal to the first portion of the catheter hub.

22. The method according to claim 20, wherein the pivoting locking member comprises a first locking member and a second locking member, and the locking receiver comprises a first locking receiver and a second locking receiver, and wherein engaging the pivoting locking member with the locking receiver comprises engaging the first pivoting locking member with the first locking receiver and engaging the second pivoting locking member with the second locking receiver.

23. The method according to claim 20, further comprising the step of connecting additional parts, including a plurality of extension tubes, directly or indirectly to the second portion of the catheter hub.

24. The method according to claim 20, wherein the catheter assembly is comprised of parts, wherein the method further comprises the steps of:

disengaging the pivoting locking member from the locking receiver;

disconnecting the second portion of the catheter hub from each of the plurality of catheter lumens;

replacing any part of the catheter assembly that has broken with a replacement part;

reconnecting the portion of the catheter hub to each of the plurality of catheter lumens; and

reengaging the pivoting locking member with the locking receiver,

whereby parts of the catheter assembly may be removed and replaced without disturbing the catheter lumens inside the patient.