Multifunctional catheter handle

• US 7,720,517 B2
• Filed: 09/25/2007
• Issued: 05/18/2010
• Est. Priority Date: 03/12/2003
• Status: Active Grant

• Current Assignee: Biosense Webster Incorporated (Johnson & Johnson)
• Original Assignee: Biosense Webster Incorporated (Johnson & Johnson)
• Inventors: Drysen, Darrell
• Primary Examiner(s): Cohen; Lee S
• Application Number:
  US11/861,142
• Publication Number:
  US 20080009882A1
• Time in Patent Office: 966 Days
• Field of Search: 600/374, 600/381, 600/585, 604/95.01, 604/95.04, 604/523, 604/528
• US Class Current: 600/374
• CPC Class Codes: A61M 25/0136 Handles therefor

Abstract

The invention is directed to a multifunctional catheter handle. The handle comprises a handle body and a core mounted within the handle body. A piston is provided having a distal end mounted in the handle body and a proximal end extending outside the handle body, to which a catheter body can be attached. The piston is longitudinally moveable relative to the core and handle body. A first puller wire anchor is fixedly mounted to the core. A cam receiver is mounted in the handle body so that the cam receiver is longitudinally slidable relative to the piston and core. A second puller wire anchor is fixedly mounted to the cam receiver. A generally cylindrical cam is mounted distal to the cam receiver in surrounding relation to the piston and core. Rotation of the cam relative to the piston and core causes longitudinal movement of the cam receiver and second puller wire anchor.

Claims

1. A multifunctional handle comprising:

a handle body;

a core mounted within the handle body, the core having a longitudinal passage extending therethrough and comprising a generally cylindrical proximal region and a generally cylindrical distal region, the generally cylindrical distal region having a larger diameter than the generally cylindrical proximal region;

a piston having a proximal end mounted in the handle body and a distal end extending outside the handle body, the piston being longitudinally moveable relative to the core and handle body, wherein the piston is slidably mounted over the generally cylindrical distal region of the core;

a first puller wire anchor fixedly mounted to the core;

a cam receiver mounted within the handle body so that the cam receiver is longitudinally slidable relative to the piston and core;

a second puller wire anchor fixedly mounted to the cam receiver; and

a generally cylindrical cam mounted distal to the cam receiver in surrounding relation to the piston, wherein rotation of the cam relative to the piston causes longitudinal movement of the cam receiver and second puller wire anchor.

2. A multifunctional handle according to claim 1, wherein the cam has a ramped proximal end.

3. A multifunctional handle according to claim 2, wherein the cam receiver is generally tubular and is mounted in surrounding relation to the core.

4. A multifunctional handle according to claim 3, wherein the cam receiver has a distal end with a tab extending distally therefrom, wherein the tab contacts the ramped proximal end of the cam.

5. A multifunctional handle according to claim 4, wherein the ramped proximal end of the cam has a tab extending proximally therefrom, such that, when the cam is rotated relative to the piston and core, the tab on the cam contacts the tab on the cam receiver to thereby limit the ability of the cam to rotate.

6. A multifunctional handle according to claim 1, wherein the second puller wire anchor is fixedly mounted to the cam receiver by being fixedly mounted within a puller wire adjuster that is adjustably mounted to the cam receiver such that the longitudinal position of the puller wire adjuster relative to the cam can be altered.

7. A multifunctional handle according to claim 6, wherein the puller wire adjuster has one or more teeth extending outward therefrom in a direction generally perpendicular to the axis of the handle and is mounted within a slot in the cam receiver, the slot containing one or more notches that mate with the teeth.

8. A multifunctional handle according to claim 1, further comprising a puller wire adjuster mounted within the core at a position proximal to the first puller wire anchor, wherein the longitudinal position of the puller wire adjuster relative to the core can be altered, the puller wire adjuster comprising an opening extending therethrough in a direction generally transverse to the axis of the handle, such that a wire extending through the core and having an end anchored to the first puller wire anchor can pass through the opening of the puller wire adjuster and reverse directions.

9. A multifunctional handle comprising:

a handle body;

a core mounted within the handle body, the core having a longitudinal passage extending therethrough and comprising a generally cylindrical proximal region and a generally cylindrical distal region, the generally cylindrical distal region having a larger diameter than the generally cylindrical proximal region;

a piston having a proximal end mounted in the handle body and a distal end extending outside the handle body, the piston being longitudinally moveable relative to the core and handle body, wherein the piston is slidably mounted over the generally cylindrical distal region of the core;

a first puller wire anchor fixedly mounted to the core;

a generally tubular cam receiver having proximal and distal ends and being mounted in surrounding relation to the piston so that the cam receiver is longitudinally slidable over the piston;

a second puller wire anchor fixedly mounted to the cam receiver; and

a generally cylindrical cam mounted distal to the cam receiver in surrounding relation to the piston and core and having a ramped proximal end, wherein rotation of the cam relative to the piston and core causes longitudinal movement of the cam receiver and second puller wire anchor.

10. A multifunctional handle according to claim 9, wherein the cam receiver has a tab extending distally therefrom that contacts the ramped proximal end of the cam.

11. A multifunctional handle according to claim 10, wherein the ramped proximal end of the cam has a tab extending proximally therefrom, such that, when the cam is rotated relative to the piston and core, the tab on the cam contacts the tab on the cam receiver to thereby limit the ability of the cam to rotate.

12. A multifunctional handle according to claim 9, wherein the second puller wire anchor is fixedly mounted to the cam receiver by being fixedly mounted within a puller wire adjuster that is adjustably mounted to the cam receiver such that the longitudinal position of the puller wire adjuster relative to the cam can be altered.

13. A multifunctional handle according to claim 12, wherein the puller wire adjuster has one or more teeth extending outward therefrom in a direction generally perpendicular to the axis of the handle and is mounted within a slot in the cam receiver, the slot containing one or more notches that mate with the teeth.

14. A multifunctional handle according to claim 9, further comprising a puller wire adjuster mounted within the core at a position proximal to the first puller wire anchor, wherein the longitudinal position of the puller wire adjuster relative to the core can be altered, the puller wire adjuster comprising an opening extending therethrough in a direction generally transverse to the axis of the handle, such that a wire extending through the core and having an end anchored to the first puller wire anchor can pass through the opening of the puller wire adjuster and reverse directions.

15. A catheter comprising:

an elongated catheter body having proximal and distal ends;

a first puller wire extending through the catheter body and having proximal and distal ends, wherein the distal end of the first puller wire is anchored at or near the distal end of the catheter body or to a structure mounted at the distal end of the catheter body;

a second puller wire extending through the catheter body and having proximal and distal ends, wherein the distal end of the second puller wire is anchored at or near the distal end of the catheter body or to a structure mounted at the distal end of the catheter body;

a control handle at the proximal end of the catheter body, the control handle comprising;

a handle body;

a core mounted within the handle body, the core having a longitudinal passage extending therethrough and comprising a generally cylindrical proximal region and a generally cylindrical distal region, the generally cylindrical distal region having a larger diameter than the generally cylindrical proximal region;

a piston having a proximal end mounted in the handle body and a distal end extending outside the handle body, wherein the piston is slidably mounted over the generally cylindrical distal region of the core, the proximal end of the catheter being mounted to the piston, the piston being longitudinally moveable relative to the core and handle body;

a cam receiver mounted within the handle body so that the cam receiver is longitudinally slidable relative to the piston and core; and

a generally cylindrical cam mounted distal to the cam receiver in surrounding relation to the piston, wherein rotation of the cam relative to the piston causes longitudinal movement of the cam receiver and second puller wire anchor;

wherein the first puller wire is fixedly mounted to the core such that longitudinal movement of the piston and catheter body relative to the core causes longitudinal movement of the first puller wire relative to the catheter body,

and wherein the second puller wire is anchored to the cam receiver such that rotation of the cam causes longitudinal movement of the cam receiver and second puller wire relative to the piston and catheter body.

16. A catheter according to claim 15, wherein the cam has a ramped proximal end.

17. A catheter according to claim 16, wherein the cam receiver is generally tubular and is mounted in surrounding relation to the core.

18. A catheter according to claim 17, wherein the cam receiver has a distal end with a tab extending distally therefrom, wherein the tab contacts the ramped proximal end of the cam.

19. A catheter according to claim 18, wherein the ramped proximal end of the cam has a tab extending proximally therefrom, such that, when the cam is rotated relative to the piston and core, the tab on the cam contacts the tab on the cam receiver to thereby limit the ability of the cam to rotate.

20. A catheter according to claim 15, wherein the second puller wire is anchored to the cam receiver by being anchored to a puller wire adjuster that is adjustably mounted to the cam receiver such that the longitudinal position of the puller wire adjuster relative to the cam can be altered.

21. A catheter according to claim 20, wherein the puller wire adjuster has one or more teeth extending outward therefrom in a direction generally perpendicular to the axis of the handle and is mounted within a slot in the cam receiver, the slot containing one or more notches that mate with the teeth.

22. A catheter according to claim 15, further comprising a puller wire adjuster mounted within the core at a position proximal to the position where the first puller wire is anchored, wherein the longitudinal position of the puller wire adjuster relative to the core can be altered, the puller wire adjuster comprising an opening extending therethrough in a direction generally transverse to the axis of the handle, such that the first puller wire extends through the core, passes through the opening of the puller wire adjuster and reverses directions.

23. A catheter according to claim 15, wherein the first puller wire has its distal end anchored at or near the distal end of the catheter body.

24. A catheter according to claim 15, further comprising a mapping assembly at the distal end of the catheter body, the mapping assembly comprising:

a tubular structure comprising a pre-formed generally circular main region generally transverse and distal to the catheter body and having an outer circumference, wherein the tubular structure comprises a non-conductive cover over at least the main region of the mapping assembly, and

a plurality of electrodes carried by the generally circular main region of the mapping assembly;

wherein the second puller wire has a distal end anchored in the non-conductive cover for contracting the generally circular main region.

25. A catheter according to claim 24, wherein the first puller wire has its distal end anchored at or near the distal end of the catheter.