Inflation adaptor with magnetically-assisted loading

• US 20040260237A1
• Filed: 06/17/2003
• Published: 12/23/2004
• Est. Priority Date: 06/17/2003
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Squadrito, Paul
• Application Number:
  US10/464,229
• Publication Number:
  US 20040260237A1
• Time in Patent Office: Days
• US Class Current: 604/97.01
• CPC Class Codes: A61M 25/0075 Valve means
• CPC Class Codes: A61M 25/0127 Magnetic means; Magnetic markers
• CPC Class Codes: A61M 25/1018 Balloon inflating or inflation-control devices
• CPC Class Codes: A61M 25/10182 Injector syringes
• CPC Class Codes: A61M 25/10184 Means for controlling or monitoring inflation or deflation
• CPC Class Codes: A61M 25/10185 Valves
• CPC Class Codes: A61M 25/10187 Indicators for the level of inflation or deflation

Abstract

An inflation adaptor is provided to move a wire within a hollow tubular body, the movement of the wire enabling actuation of an expandable member at the distal end of the hollow tubular body. The expandable member can be a balloon, filter or similar device. The adaptor generally includes a clamping mechanism which clamps the hollow tubular body and wire within the adaptor, and also includes a drive mechanism for moving the wire within the hollow tubular body. An actuator, such as a rotatable knob, is provided to operate both the clamping mechanism and the drive mechanism. The adaptor may also include a fluid delivery and expansion system within a housing when the expandable member is a balloon, wherein movement of the actuator delivers a predetermined amount to the balloon while still operating the clamping mechanism and the drive mechanism. The adaptor may also include one or more magnets within the housing to prevent kinking of the wire and the hollow tubular body during loading of the hollow tubular body.

Claims

1. An adaptor for controlling actuation of an expandable device, the adaptor comprising:

a housing with a retaining portion which interacts to releasably retain a section of a hollow tubular body therein, the expandable device being disposed at a distal end of the hollow tubular body, wherein the retaining portion comprises at least one magnet for aligning the hollow tubular body in the housing; and

an actuator, mounted on the housing, which drives an elongate member within the hollow tubular body to move said elongate member from a first position at least partially within said hollow tubular body to a second position at least partially within said hollow tubular body, the movement of the elongate member between the first and second positions enabling expansion of the expandable device.

2. The adaptor of claim 1, wherein the retaining portion comprises a first panel and a second panel defining a channel therebetween for receiving said hollow tubular body.

3. The adaptor of claim 2, wherein the second panel is moveable toward the first panel to clamp the hollow tubular body therebetween.

4. The adaptor of claim 3, further comprising at least one cam, wherein the movement of the actuator turns the cam to move the second panel toward the first panel.

5. The adaptor of claim 4, further comprising a pair of cams connected by a link, wherein movement of the actuator turns said cams to move the second panel toward the first panel.

6. The adaptor of claim 1, further comprising a pair of sliding pads adapted to engage said elongate member.

7. The adaptor of claim 1, wherein movement of the actuator is capable of moving said sliding pads in a longitudinal direction.

8. The adaptor of claim 1, wherein said expandable device is a balloon.

9. The adaptor of claim 8, further comprising a fluid line terminating in a fluid delivery opening within said retaining portion.

10. The adaptor of claim 1, wherein the actuator includes a rotatable knob.

11. The adaptor of claim 1, further comprising at least one clip for securing the hollow tubular body within the adaptor.

12. The adaptor of claim 1, wherein the first panel comprises said at least one magnet.

13. The adaptor of claim 1, wherein the retaining portion comprises three magnets.

14. The adaptor of claim 1, wherein the retaining portion comprises a plurality of magnets.

15. The adaptor of claim 1, wherein the at least one magnet is magnetically attracted to the elongate member.

16. The adaptor of claim 1, wherein the at least one magnet is magnetically attracted to the hollow tubular body.

17. The adaptor of claim 1, wherein the at least one magnet is magnetically attracted to the elongate member and the hollow tubular body.

18. An adaptor, comprising:

a housing with a retaining portion which interacts to releasably retain a section of an elongate body therein; and

at least one magnet disposed adjacent the retaining portion adapted to apply a lateral magnetic force to the elongate body.

19. The adaptor of claim 18, wherein the housing comprises first and second panels adapted to clamp the section of elongate body there between.

20. The adaptor of claim 19, wherein the at least one magnet is provided in at least one of the panels.

21. The adaptor of claim 19, wherein the at least one magnet is provided in only one of the panels.

22. The adaptor of claim 18, comprising a plurality of magnets.

23. A method of manipulating a wire within a lumen of a hollow tubular body comprising:

positioning the hollow tubular body within a retaining portion of an adaptor, the retaining portion releasably retaining a section of a hollow tubular body therein, the expandable device being disposed at a distal end of the hollow tubular body;

aligning the tubular body within the adaptor with at least one magnet provided in the adaptor; and

driving the wire within the hollow tubular body to move the wire from a first position at least partially within said hollow tubular body to a second position at least partially within said hollow tubular body, the movement of the wire between the first and second positions enabling expansion of the expandable device.

24. The method of claim 23, wherein the magnet aligns the tubular body within the adaptor by applying a magnetic force to the wire positioned within the lumen of the hollow tubular body.

25. The method of claim 23, wherein the retaining portion comprises a first panel and a second panel defining a channel therebetween for positioning of at least the tubular body, and first and second pads adapted to position the wire therebetween.

26. The method of claim 25, further comprising moving an actuator on the adaptor from a first position to a second position, the movement of the actuator causing the first panel and second panel to move relatively toward each other to clamp at least the hollow tubular body therebetween, wherein the hollow tubular body is clamped between the first panel and second panel, the first and second pads contact the wire.

27. The method of claim 26, further comprising moving the actuator from the second position to a third position, the movement of the actuator causing movement of the first and second pads in a direction parallel to the longitudinal axis of the hollow tubular body to cause corresponding movement of the wire relative to the hollow tubular body.

28. The method of claim 27, wherein the actuator is moved from the first position to the second position and the second position to the third position in one continuous motion.

29. The method of claim 27, wherein the actuator is rotated.

30. The method of claim 29, wherein the hollow tubular body includes an inflatable balloon at a distal end thereof and an inflation port at a proximal end thereof, and the wire includes a sealer portion at a distal end thereof, and movement of the actuator from the second to third position causes movement of the sealer portion from a position distal to said inflation port to a position proximal to said inflation port.

31. The method of claim 30, wherein at least one of the panels includes a fluid opening, such that when the panels are clamped against the tubular body the fluid opening is in fluid communication with the inflation port.

32. An actuation system, comprising:

a hollow tubular body having a proximal end and a distal end and a lumen extending there through and an expandable member disposed at the distal end;

an elongate member provided at the proximal end of the hollow tubular body, the elongate member being moveable from a first position at least partially within said hollow tubular body to a second position at least partially within said hollow tubular body, the movement of the elongate member between the first and second positions enabling expansion of the expandable device;

a housing with a retaining portion which interacts to releasably retain a section of a hollow tubular body therein, the expandable device being disposed at a distal end of the hollow tubular body;

an actuator, mounted on the housing, which drives said elongate member within the hollow tubular body; and

at least one magnet for aligning the hollow tubular body within the retaining portion.

33. The system of claim 32, wherein the expandable device is an inflatable balloon.

34. The system of claim 33, wherein the elongate member includes a sealer portion adapted to seal against an interior surface of the lumen.

35. The system of claim 32, wherein the housing comprises first and second panels defining a channel there between, the panels being moveable relative to one another to clamp the hollow tubular body there between.

36. The system of claim 35, wherein a plurality of magnets are provided in at least one of the first and second panels.

37. The system of claim 35, further comprising a first sliding pad and a second sliding pad positioned within openings of said first and second panels, respectively, and adapted to receive a portion of the elongate member therebetween, said sliding pads being cooperatively slideable within the openings of said first and second panels in a longitudinal direction.

38. The system of claim 37, further comprising an actuator operatively connected to at least said second panel and at least said second sliding pad, wherein movement of said actuator causes said second panel to move relatively toward said first panel and also causes said sliding pads to move within the openings of the first panel and second panel.

39. The system of claim 38, wherein the actuator is rotatable.

40. The system of claim 32, further comprising a plurality of magnets.

41. The system of claim 32, wherein the hollow tubular body is metallic.

42. The system of claim 32, wherein the elongate member is made of a ferromagnetic material, and the at least one magnet aligns the hollow tubular body within the retaining portion by applying a magnetic force to the elongate member within the hollow tubular body.

43. The system of claim 42, wherein the elongate member is made of stainless steel.