Sacrificial anode stent system

• US 20040002752A1
• Filed: 06/26/2002
• Published: 01/01/2004
• Est. Priority Date: 06/26/2002
• Status: Abandoned Application

• Current Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Griffin, Stephen, Gerberding, Brent C.
• Application Number:
  US10/180,706
• Publication Number:
  US 20040002752A1
• Time in Patent Office: Days
• US Class Current: 623/1.15
• 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 17/12036 partial occlusion
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2250/0054 differing in corrosion resistance
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

A sacrificial anode stent system comprises a stent having at least one sacrificial anode portion and a vaso-occlusive device. The vaso-occlusive device has at least one portion with a potential different from that of the sacrificial anode portion of the stent.

Claims

1. A sacrificial anode stent system comprising:

a) a stent having at least one sacrificial anode portion and

b) a vaso-occlusive device,

the vaso-occlusive device having at least one portion with a potential different from that of the sacrificial anode portion of the stent.

2. The sacrificial anode stent system of claim 1 wherein said sacrificial anode portion is at a proximal or distal end of the stent.

3. The sacrificial anode stent system of claim 1 further comprising a plurality of sacrificial anode portions.

4. The sacrificial anode stent system of claim 1 comprising a plurality of sacrificial anode portions wherein said sacrificial anode portions are at a proximal and/or distal end of the stent.

5. The sacrificial anode stent system of claim 1 comprising a plurality of sacrificial anode portions, the sacrificial anode portions provided in the form of tabs extending from or both ends of the stent.

6. The sacrificial anode stent system of claim 1 wherein the stent further comprises radiopaque portions.

7. The sacrificial anode stent system of claim 6 comprising a plurality of sacrificial anode portions, the sacrificial anode portions and the radiopaque portions provided in the form of tabs extending from or both ends of the stent.

8. The sacrificial anode stent system of claim 1 wherein the vaso-occlusive device is in the form of a coil.

9. The sacrificial anode stent system of claim 1 wherein the vaso-occlusive device is in the form of a GDC coil.

10. The medical device of claim 8 wherein the coil includes platinum and the non-sacrificial portion of the stent includes stainless steel.

11. The medical device of claim 10 wherein the sacrificial portion is selected from the group consisting of magnesium, zinc, aluminum, mild steel, low alloy steel, and iron or any combination thereof.

12. A sacrificial anode stent system comprising:

a) a stent and

b) a medical device,

the stent and the medical device each having at least one metal portion, the metal portion of the stent having a potential different from that of the medical device, wherein one of the stent and the medical device includes a sacrificial portion of a different potential from that of the remainder of the stent or medical device, the potential of the sacrificial portion such that corrosion occurs preferentially at the sacrificial portion.

13. The sacrificial anode stent system of claim 12 wherein the medical device is a coil and the sacrificial portion is part of the stent.

14. The sacrificial anode stent system of claim 13 wherein the coil includes platinum and the non-sacrificial portion of the stent includes stainless steel.

15. The sacrificial anode stent system of claim 14 wherein the sacrificial portion is selected from the group consisting of magnesium, zinc, aluminum, mild steel, low alloy steel, and iron or any combination thereof.

16. A stent including at least one sacrificial anode portion.

17. The stent of claim 16, wherein said sacrificial anode portion is connected to said stent proximate to said proximal end.

18. The stent of claim 16, wherein said sacrificial anode portion is connected to said stent proximate to said distal end.

19. The stent of claim 16, further comprising a plurality of sacrificial anode portions connected to said stent.

20. The stent of claim 19, wherein said sacrificial anode portions are connected to said stent proximate to said proximal end.

21. The stent of claim 19, wherein said sacrificial anode portions are connected to said stent proximate to said distal end.

22. The stent of claim 16, wherein or more regions of the stent are radiopaque.

23. The stent of claim 16 wherein the sacrificial anode portions are characterized by a higher potential than that of the remainder of the stent.

24. The stent of claim 16 wherein the sacrificial anode portion is in the form of one or more tabs extending from a proximal or distal end of the stent.