Devices and methods for treating vascular malformations

• US 6,746,468 B1
• Filed: 10/24/2000
• Issued: 06/08/2004
• Est. Priority Date: 06/02/1999
• Status: Expired due to Term

• Current Assignee: Stryker Corporation
• Original Assignee: Concentric Medical, Inc. (Stryker Corporation)
• Inventors: Sepetka, Ivan, Gia, Son, Dieck, Martin S.
• Primary Examiner(s): Milano, Michael J.
• Assistant Examiner(s): HO, TAN-UYEN THI
• Application Number:
  US09/695,637
• Time in Patent Office: 1,323 Days
• Field of Search: 606/200, 606/151, 606/213, 606/215, 606/113, 606/191-195, 623/1.11
• US Class Current: 606/200
• 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 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12168 having a mesh structure A61B17/1214 takes precedence
• 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 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12068 detachable by heat
• CPC Class Codes: A61B 2017/12081 detachable by inflation
• CPC Class Codes: A61B 2017/12095 Threaded connection
• CPC Class Codes: A61B 2018/00214 Expandable means emitting energy, e.g. by elements carried thereon
• CPC Class Codes: A61B 2018/00416 Treatment of aneurisms
• CPC Class Codes: A61B 2018/1495 Electrodes being detachable from a support structure
• CPC Class Codes: A61M 2025/1084 : having features for increasing the shape stability, the reproducibility or for limiting expansion, e.g. containments, wrapped around fibres, yarns or strands
• CPC Class Codes: A61M 2205/36 : related to heating or cooling
• 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 25/007 : Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0074 : Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/0082 : Catheter tip comprising a tool
• CPC Class Codes: A61M 25/1002 : characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 29/00 : Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00
• CPC Class Codes: A61M 29/02 : Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

The invention is also directed to a device for treating an aneurysm which has a cover covering the neck of the aneurysm and a lateral portion extending into the aneurysm. The invention is also directed to a cover which is used to cover the neck of the aneurysm thereby isolating the aneurysm from the parental vessel.

Claims

1. A method of treating an aneurysm, comprising the steps of:

providing a device having a cover and a lateral extension, the cover and extension being movable from a collapsed position to an expanded position;

advancing the device through a patient'"'"'s vascular system to an aneurysm with the cover in the collapsed position;

moving the lateral extension into the neck of the aneurysm and the cover over the neck of the aneurysm to isolate the aneurysm from the parental vessel;

coupling at least the lateral extension to a source of energy; and

delivering the energy to the lateral extension after the advancing step.

2. The method of claim 1, wherein:

the providing step is carried out with the cover being a substantially flat element; and

the moving step is carried out with the cover being positioned against a wall of the parental vessel around the neck of the aneurysm.

3. The method of claim 1, wherein:

the moving step is carried out with the lateral extension extending laterally outward from a side of the device.

4. The method of claim 1, wherein:

the providing step is carried out with the lateral extension forming at least one loop extending into the aneurysm.

5. The method of claim 1, wherein:

the providing step is carried out with the lateral extension forming 1-8 loops.

6. The method of claim 1, wherein:

the providing step is carried out with the cover extending around no more than half the circumference of the vessel.

7. The method of claim 1, wherein:

the providing step is carried out with the cover extending around no more than one third the circumference of the vessel.

8. The method of claim 1, wherein:

the coupling and delivering steps are carried out with the source of energy being RF energy.

9. The method of claim 1, wherein:

the providing step is carried out with the cover being wrapped around the expandable element.

10. The method of claim 9, wherein:

the providing step is carried out with the cover being wrapped around the expandable element without overlapping folds.

11. A method of treating an aneurysm, comprising the steps of:

providing a cover which is positioned around an expandable element in a collapsed position, the cover being covered by a sheath, the cover also having an extension which is movable between a retracted position and an expanded position, the extension extending away from the cover in the expanded position;

advancing the cover to an aneurysm in a patient with the cover in the collapsed position;

withdrawing the sheath to expose the cover;

expanding the expandable member thereby expanding the cover, the cover expanding to an expanded condition, the cover being positioned over a neck of the aneurysm while the extension is in the expanded position and passes into the neck of the aneurysm.

12. The method of claim 11, wherein:

the providing step is carried out with the cover being wrapped around the expandable element without creating folds when collapsed.

13. The method of claim 11, wherein:

the expanding step is carried out with the cover engaging a wall of the parental vessel around the neck of the aneurysm.

14. The method of claim 11, wherein:

the expanding step is carried out with the cover being attached to the wall.

15. The method of claim 11, wherein:

the providing step is carried out with an adhesive positioned on an outer surface of the cover and protected by the sheath during the advancing step.

16. The method of claim 11, wherein:

the expanding step is carried out with the cover extending no more than half the circumference of the vessel.

17. The method of claim 11, wherein:

the expanding step is carried out with the cover extending no more than one third the circumference of the vessel.

18. The method of claim 11, wherein:

the providing step is carried out with the cover having a metallic frame structure and an impermeable portion mounted to the frame, the impermeable portion being positioned to cover the neck of the aneurysm after the inflating step.

19. The method of claim 11, wherein:

the providing step is carried out with the sheath being folded over itself at a distal end; and

the expanding step is carried out with the sheath being pulled back over itself.

20. The method of claim 11, wherein:

the providing step is carried out with the sheath comprising PTFE.

21. The method of claim 11, wherein:

the cover is mounted to a delivery catheter, the delivery catheter having a single lumen; and

the advancing step is carried out with the device being advanced over a guidewire extending through the single lumen.

22. A method of treating an aneurysm, comprising the steps of:

providing a device having a cover and a lateral extension, the cover and extension being movable, from a collapsed position to an expanded position, the cover being wrapped around the expandable element;

advancing the device through a patient'"'"'s vascular system to an aneurysm with the cover in the collapsed position;

moving the lateral extension into the neck of the aneurysm and the cover over the neck of the aneurysm to isolate the aneurysm from the parental vessel.

23. The method of claim 22, wherein:

the providing step is carried out with the cover being a substantially flat element; and

the moving step is carried out with the cover being positioned against a wall of the parental vessel around the neck of the aneurysm.

24. The method of claim 22, wherein:

the moving step is carried out with the lateral extension extending laterally outward from a side of the device.

25. The method of claim 22, wherein:

the providing step is carried out with the lateral extension forming at least one loop extending into the aneurysm.

26. The method of claim 22, wherein:

the providing step is carried out with the lateral extension forming 1-8 loops.

27. The method of claim 22, wherein:

the providing step is carried out with the cover extending around no more than half the circumference of the vessel.

28. The method of claim 22, wherein:

the providing step is carried out with the cover extending around no more than one third the circumference of the vessel.

29. The method of claim 22, further comprising wherein:

the coupling and delivering steps are carried out with the source of energy being RF energy.

30. The method of claim 22, wherein:

the providing step is carried out with the cover being wrapped around the expandable element without overlapping folds.