Intraluminal catheter with hydraulically collapsible self-expanding protection device

• US 20040153094A1
• Filed: 11/14/2003
• Published: 08/05/2004
• Est. Priority Date: 11/14/2002
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Barone, David D., Dunfee, Albert H.
• Granted Patent: US 7,527,636 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61M 2025/0175 having telescopic features, interengaging nestable members movable in relations to one another
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/0074 Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/008 Strength or flexibility characteristics of the catheter tip
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool

Abstract

An intraluminal catheter system comprises a first tubular member having a proximal end and a distal end and has a fluid containing lumen therethrough. A medical device is coupled to the first tubular member proximate the distal end. A slave actuating member is coupled to the medical device and is slidably mounted proximate the distal end for longitudinal movement with respect to the first tubular member. A master actuating member is configured for longitudinal movement within the first tubular member proximate the proximal end. The master actuating member is hydraulically coupled to the slave actuating member.

Claims

1. An intraluminal catheter system, comprising:

a first tubular member having a proximal end and a distal end and having a fluid containing lumen therethrough;

a medical device coupled to said first tubular member proximate said distal end;

a slave actuating member coupled to said medical device and slidably mounted proximate said distal end for longitudinal movement with respect to said first tubular member; and

a master actuating member configured for longitudinal movement within said first tubular member proximate said proximal end, said master actuating member hydraulically coupled to said slave actuating member.

2. A system according to claim 1 wherein said slave actuating member is configured for movement within said lumen.

3. A system according to claim 1 wherein said lumen has a constant diameter.

4. A system according to claim 3 wherein said first tubular member comprises a hypotube.

5. A system according to claim 1 wherein said master actuating member comprises a first plunger.

6. A system according to claim 5 wherein said slave actuating member comprises a second plunger configured for telescopic movement within said first tubular member, said second plunger extending beyond said distal end of said first tubular member.

7. A system according to claim 5 wherein said slave actuating member comprises a second tubular member configured for telescopic movement with respect to said first tubular member, said second tubular extending over said distal end of said first tubular member.

8. A system according to claim 1 wherein said medical device comprises an expandable filter for capturing emboli.

9. A system according to claim 1 wherein said medical device comprises an expandable occluder.

10. A system according to claim 6 further comprising a sealing member fixedly attached to said second plunger for providing a fluid seal between said first tubular member and said second plunger.

11. A system according to claim 7 further comprising a sealing member fixedly attached to said second tubular member for providing a fluid seal between said first tubular member and second tubular member.

12. A system according to claim 8 wherein said filter comprises a proximal region having a plurality of openings therein of sufficient size for emboli to pass through.

13. A system according to claim 12 wherein said filter comprises a distal region having a plurality of pores therein of a size sufficiently small to capture the emboli.

14. A system according to claim 13 wherein at least said distal region is a mesh.

15. A guidewire apparatus comprising:

a first tubular member having a proximal end and a distal end and having a fluid containing lumen therethrough;

a slave actuating member slidably mounted proximate said distal end for longitudinal movement with respect to said first tubular member; and

a master actuating member configured for longitudinal movement within said first tubular member proximate said proximal end, said master actuating member hydraulically coupled to said slave actuating member.

16. A system according to claim 15 wherein said slave actuating member is configured for movement within said lumen.

17. A system according to claim 15 wherein said lumen has a constant diameter.

18. A system according to claim 17 wherein said first tubular member comprises a hypotube.

19. A system according to claim 15 wherein said master actuating member comprises a first plunger.

20. An apparatus according to claim 19 wherein said slave actuating member comprises a second plunger configured for telescopic movement within said first tubular member, said second plunger extending beyond said distal end of said first tubular member.

21. An apparatus according to claim 19, wherein said slave actuating member comprises a second tubular member configured for telescopic movement with respect to said first member, said second tubular extending over said distal end of said first tubular member.

22. An apparatus according to claim 20 further comprising a sealing member fixedly attached to said second plunger for providing a fluid seal between said first tubular member and said second plunger.

23. An apparatus according to claim 21 further comprising a sealing member fixedly attached to said second tubular member for providing a fluid seal between said first tubular member and second tubular member.

24. An intraluminal catheter system, comprising:

a first tubular member having a proximal end and a distal end and having a fluid containing lumen therethough;

a medical device coupled to said first tubular member proximate said distal end;

a master actuating member telescopically mounted within said lumen proximate said proximal end and configured to longitudinal movement therein; and

a slave actuating member telescopically mounted within said lumen proximate said distal end and configured for longitudinal movement therein, said slave actuating member coupled to said medical device and hydraulically coupled to said master actuating member.

25. A system according to claim 24 wherein said lumen has a constant diameter.

26. A system according to claim 25 wherein said first tubular member comprises a hypotube.

27. A system according to claim 24 wherein said master actuating member comprises a first plunger.

28. A system according to claim 27 wherein said slave actuating member comprises a second plunger extending beyond said distal end of said first tubular member.

29. A system according to claim 24 wherein said medical device comprises a filter for capturing emboli.

30. A system according to claim 24 wherein said medical device comprises an occluder.

31. A system according to claim 28 further comprising a sealing member fixedly attached to said second plunger for providing a fluid seal between said first tubular member and said second plunger.

32. A system according to claim 29 wherein said filter comprises a proximal region having a plurality of openings therein of sufficient size for emboli to pass through.

33. A system according to claim 32 wherein said filter comprises a distal region having a plurality of pores therein of a size sufficiently small to capture the emboli.

34. A system according to claim 33 wherein at least said distal region comprises a mesh.