Locking catheter hub

1. A drainage catheter, comprising:

an elongate body member defining a central lumen and comprising a distal portion and a proximal portion, at least a portion of the elongate body member adapted for placement within a patient;

an elongate flexible member operably connected to the distal portion of the elongate body member and extending through the lumen in at least the proximal portion of the elongate body member; and

a hub comprising

a base having a proximal end, a distal end, and an internal passageway, an outer surface between the proximal and distal ends, and a base side lumen extending from the internal passageway to an opening in the outer surface, wherein the outer surface includes an engagement element and a mating surface portion, and wherein the base distal end is fixed to the elongate body member proximal portion, and

a collar having a proximal end, a distal end, an inner surface extending from the proximal end to the distal end and an outer surface extending from the proximal end to the distal end, the collar further having a collar side lumen extending from the inner surface to the outer surface, wherein the collar side lumen is positioned between the proximal and distal end of the collar, and wherein the inner surface of the collar includes a mating surface portion and a counter element,

wherein the elongate flexible member extends through the base side lumen and the collar side lumen, and

wherein the hub has an unlocked position where the engagement element and the counter element are not in engagement and a locked position where the engagement element and the counter element are in engagement, the collar is tightened on the base and the elongate flexible element is clamped between the mating surface portions of the base and the collar.

2. The drainage catheter of claim 1 , wherein the hub further comprises an outer jacket covering the base and the collar, the outer jacket having a cavity for receiving the base and the collar.

3. The drainage catheter of claim 2 , wherein the outer jacket further comprises a distal portion that tapers distally and extends distally beyond the distal ends of the base and the collar.

4. The drainage catheter of claim 1 , wherein the base mating surface comprises a tapered surface that tapers at a first angle and wherein the collar mating surface comprises a tapered surface that tapers at a second angle and wherein the second angle is greater than the first angle.

5. The drainage catheter of claim 1 , wherein the base mating surface is distal the engagement element disposed on the base outer surface and wherein the collar mating surface is distal the counter element disposed on the collar inner surface.

6. The drainage catheter of claim 1 , wherein the base mating surface and collar mating surface are proximal to the engagement element and the counter element is distal the engagement element disposed on the base outer surface and wherein the collar mating surface is distal the counter element disposed on the collar inner surface.

7. The drainage catheter of claim 1 , wherein the elongate flexible member has a first end fixed to the hub, a second end portion extending through the base side lumen and the collar side lumen, and a middle portion distal of the first end and the second end portion that is operably connected to the distal portion of the elongate body member.

8. The drainage catheter of claim 1 , wherein relative proximal movement of the elongate flexible member and the hub causes the distal portion of the elongate body member to change shape.

9. The drainage catheter of claim 1 , wherein relative proximal movement of the elongate flexible member and the hub causes the distal portion of the elongate body member to form a loop.

10. The drainage catheter of claim 1 , wherein when the collar is tightened to the base, no relative movement between the elongate flexible member and the hub is possible and a portion of the elongate flexible member is fixed between the collar and the base.

11. The drainage catheter of claim 1 , further comprising a resilient seal disposed in the base side lumen that substantially prevents fluid flow through the side lumen.

12. The drainage catheter of claim 1 , further comprising a locking element disposed between the base and the collar.

13. The drainage catheter of claim 12 , wherein the locking element is a spring.

14. The drainage catheter of claim 12 , wherein the locking element is partially disposed in a cavity on the outer surface of the base.

15. The drainage catheter of claim 14 , wherein the cavity is a slot that extends generally longitudinally.

16. The drainage catheter of claim 12 , wherein the locking element is partially compressed between the collar and the base.

17. The drainage catheter of claim 12 , wherein the locking element is partially compressed between the collar and the base when the engagement element and the counter element are not engaged.

18. The drainage catheter of claim 12 , wherein the collar comprises a first locking cavity, the first locking cavity configured to partially receive the locking element when the collar is locked to the base.

19. The drainage catheter of claim 18 , wherein the collar comprises a second locking cavity, the second locking cavity configured to partially receive the locking element when the engagement element and the counter element are not engaged.