Occlusion method and apparatus

• US 20020156499A1
• Filed: 04/09/2002
• Published: 10/24/2002
• Est. Priority Date: 03/05/1999
• Status: Active Grant

• Current Assignee: Andras Konya, Kenneth C. Wright, Sidney Wallace
• Original Assignee: Andras Konya, Kenneth C. Wright, Sidney Wallace
• Inventors: Wallace, Sidney, Wright, Kenneth C., Konya, Andras
• Granted Patent: US 6,994,717 B2
• Time in Patent Office: Days
• US Class Current: 606/213
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12099 characterised by the location of the occluder
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• CPC Class Codes: A61B 2017/1205 Introduction devices

Abstract

An occlusion method and apparatus. The occluder includes a elastically deformable members and a jacket. The elastically deformable members are secured in spaced relation and extend in arcuate conformation therebetween. The jacket covers at least a portion of the elastically deformable members. The elastically deformable members are configured to become compressed upon application of a force and to recover the arcuate conformation upon removal of the force to occlude a site.

Claims

1. An occluder comprising:

a plurality of elastically deformable members secured in spaced relation and extending in arcuate conformation therebetween, said plurality of elastically deformable members operable to become compressed upon application of a force and to recover said arcuate conformation upon removal of said force; and

a jacket in operable relation to said plurality of elastically deformable members and configured to cover at least a portion of said plurality of elastically deformable members.

2. The occluder of claim 1, wherein said plurality of elastically deformable members are programmed with thermal memory.

3. The occluder of claim 1, wherein said plurality of elastically deformable members are programmed with superelasticity.

4. The occluder of claim 1, wherein said plurality of elastically deformable members are secured at their ends.

5. The occluder of claim 1, further comprising one or more anchors defined by one or more ends of said plurality of elastically deformable members.

6. The occluder of claim 1, further comprising a pair of clips in spaced relation for securing said plurality of elastically deformable members.

7. The occluder of claim 6, wherein at least one of said clips is interdigitated.

8. The occluder of claim 6, further comprising an eye in operable relation to at least one of said clips.

9. The occluder of claim 1, wherein said jacket comprises dacron.

10. The occluder of claim 1, wherein said jacket comprises polyurethane.

11. The occluder of claim 1, wherein said plurality of elastically deformable members comprises four or more nitinol wires.

12. The occluder of claim 1, further comprising an occluding agent enclosed within said jacket.

13. The occluder of claim 12, wherein said occluding agent comprises one or more threads of polyester.

15. The system of claim 14, wherein said plurality of elastically deformable wires comprise four, five, or six nitinol wires.

16. The system of claim 14, wherein said plurality of elastically deformable wires are programmed with thermal memory.

17. The system of claim 14, wherein said plurality of elastically deformable wires are programmed with superelasticity.

18. The system of claim 14, wherein said occluder further comprises one or more anchors defined by one or more ends of said plurality of elastically deformable wires.

19. The system of claim 14, wherein said jacket comprises dacron.

20. The system of claim 14, wherein said jacket comprises polyurethane.

21. The system of claim 14, wherein said occluder further comprises an occluding agent enclosed within said jacket.

22. The system of claim 21, wherein said occluding agent comprises one or more threads of polyester.

23. The system of claim 14, wherein said occluder further comprises an eye in operable relation to at least one of said clips and wherein said delivery system further comprises a retrieval filament configured to engage said eye to retrieve said occluder.

24. The system of claim 14, wherein at least one of said clips is an interdigitated clip.

25. The system of claim 24, wherein an end of said pushing catheter is interdigitated and configured to removably interlock with said interdigitated clip.

26. The system of claim 14, further comprising a lumen defined through said occluder and said delivery system.

27. The system of claim 26, wherein said delivery system further comprises a guide wire within said lumen and passing through an interior of said occluder.

28. The system of claim 27, wherein said delivery system further comprises a stiffening catheter configured to engage at least one of said clips to compress said occluder.

30. The method of claim 29, wherein said occluder further comprises one or more anchors defined by one or more ends of said plurality of elastically deformable wires, and wherein said method further comprises anchoring said occluder at said occlusion site with said one or more anchors.

31. The method of claim 29, wherein at least one of said clips is an interdigitated clip, wherein an end of said pushing catheter is interdigitated, and wherein the method further comprises retrieving said occluder by interlocking said interdigitated clip with said interdigitated end of said pushing catheter by drawing at least a portion of said occluder within said guiding catheter.

32. The method of claim 31, further comprising repositioning said guiding occluder.

33. The method of claim 29, wherein said occluder and delivery system further comprise an eye in operable relation to at least one of said clips and a retrieval filament configured to engage said eye, and wherein said method further comprises retrieving said occluder by drawing at least a portion of said occluder within said guiding catheter with said retrieval filament.

34. The method of claim 33, further comprising repositioning said occluder.

35. The method of claim 29, wherein said occluder further comprises a lumen defined through said occluder and a guide wire configured to pass within said lumen, and wherein said method further comprises guiding said occluder toward said occlusion site with said guide wire.

36. The method of claim 29, wherein said delivery system further comprises a stiffening catheter configured to engage at least one of said clips, and wherein said method further comprises engaging said at least one of said clips with said stiffening catheter and compressing said occluder with said stiffening catheter by increasing the distance between said pair of clips.

37. The method of claim 29, wherein said occlusion site is a vascular occlusion site.

38. The method of claim 29, wherein said occlusion site is a ureter occlusion site.

39. The method of claim 29, wherein said occlusion site is a patent ductus arteriosus site.

14. An occlusion system comprising:

an occluder comprising;

a pair of clips configured in spaced relation;

a plurality of elastically deformable wires secured by said clips and extending in arcuate conformation therebetween, said plurality of elastically deformable wires operable to become compressed upon application of a force and to recover said arcuate conformation upon removal of said force;

a jacket in operable relation to said plurality of elastically deformable wires and configured to cover at least a portion of said plurality of elastically deformable wires; and

a delivery system comprising;

a guiding catheter configured to receive said occluder, said guiding catheter compressing and guiding said plurality of elastically deformable wires; and

a pushing catheter configured to engage at least one of said pair of clips to slide said occluder relative to said guiding catheter.

29. A method for occluding an occlusion site, comprising:

providing an occluder including a pair of clips configured in spaced relation, a plurality of elastically deformable wires secured by said clips and extending in arcuate conformation therebetween, and a jacket in operable relation to said plurality of elastically deformable wires;

providing a delivery system including a guiding catheter configured to receive said occluder and a pushing catheter configured to engage at least one of said pair of clips;

positioning said guiding catheter adjacent said occlusion site, wherein said occluder is positioned within said guiding catheter;

engaging at least one of said pair of clips with said pushing catheter; and

sliding said occluder relative to said guiding catheter with said pushing catheter so as to deploy said occluder from said guiding catheter so as to recover said arcuate conformation to occlude said occlusion site.

40. A method for closure of patent ductus arteriosus having an aortic and pulmonary side, comprising:

providing an occluder including a pair of clips configured in spaced relation, a plurality of elastically deformable wires secured by said clips and extending in arcuate conformation therebetween, and a jacket in operable relation to said plurality of elastically deformable wires;

providing a delivery system including a guiding catheter configured to receive said occluder and a pushing catheter configured to engage at least one of said pair of clips;

positioning said guiding catheter adjacent said patent ductus arteriosus, wherein said occluder is positioned within said guiding catheter; and

deploying said occluder from said guiding catheter so as to recover said arcuate conformation to close said patent ductus arteriosus.

41. The method of claim 40, wherein said occluder further comprises a guide wire in operable relation to said guiding catheter, and wherein said method further comprises guiding said occluder toward said patent ductus arteriosus with said guide wire.

42. The method of claim 40, wherein positioning comprises positioning said occluder on said pulmonary side.