Sacrificial anode stent system

• US 8,377,112 B2
• Filed: 09/07/2011
• Issued: 02/19/2013
• Est. Priority Date: 06/26/2002
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Griffin, Stephen, Gerberding, Brent C.
• Primary Examiner(s): Houston, Elizabeth
• Application Number:
  US13/227,202
• Publication Number:
  US 20110319928A1
• Time in Patent Office: 531 Days
• Field of Search: 606/198, 606/108, 606/200, 606/151, 606/231, 606/194, 606/32, 623/1.11, 623/1.12, 623/1.13, 623/1.1, 623/11.11, 623/903, 128/898
• 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 at least one sacrificial anode portion of the stent.

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

3. The sacrificial anode stent system of claim 1, the at least one sacrificial anode portion being a plurality of sacrificial anode portions.

4. The sacrificial anode stent system of claim 1, the at least one sacrificial anode portion being 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, the at least one sacrificial anode portion being a plurality of sacrificial anode portions, the sacrificial anode portions provided in the form of tabs extending from one or both ends of the stent.

6. The sacrificial anode stent system of claim 5, wherein the stent further comprises radiopaque portions in the form of tabs extending from one or both ends of the stent.

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

8. The medical device of claim 7, wherein the coil includes platinum and the at least one portion with a potential different from that of the at least one sacrificial anode portion of the stent includes stainless steel.

9. The medical device of claim 8, wherein the at least one sacrificial anode portion is selected from the group consisting of magnesium, zinc, aluminum, mild steel, low alloy steel, and iron or any combination thereof.

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

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

12. The sacrificial anode portion stent system of claim 11, wherein the medical device is a coil.

13. The sacrificial anode stent system of claim 12, wherein the coil includes platinum and the at least one metal portion of the stent includes stainless steel.

14. The sacrificial anode stent system of claim 13, wherein the sacrificial anode portion is selected from the group consisting of magnesium, zinc, aluminum, mild steel, low alloy steel, and iron or any combination thereof.

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

16. The stent of claim 15, wherein the at least one sacrificial anode portion is connected to said stent proximate to said an end of the stent.

17. The stent of claim 15, further comprising a plurality of sacrificial anode portions connected to said stent.

18. The stent of claim 17, wherein the plurality of sacrificial anode portions are connected to said stent proximate to an end of the stent.

19. The stent of claim 15, wherein the at least one sacrificial anode portion is characterized by a higher potential than a remainder of the stent.

20. The stent of claim 15, wherein the at least one sacrificial anode portion is in the form of one or more tabs extending from a proximal or distal end of the stent.