Methods of making medical devices
View Patent ↗A method of making a stent includes providing a tubular member having a first layer, the first layer and the tubular member having different compositions, removing a portion of the tubular member, and removing a portion of the first layer from the tubular member.
1. A method of making a stent, the method comprising:
providing a tubular member having a first layer, the first layer and the tubular member having different metallic compositions and having a first thickness;
removing a portion of the tubular member; and
removing a portion of the first layer from the tubular member, wherein the tubular member and the first layer have a reduced second thickness.
2. The method of claim 1 , wherein the tubular member and the first layer comprise metals.
3. The method of claim 1 , further comprising finishing the tubular member into the stent.
4. The method of claim 3 , wherein the tubular member is finished by electropolishing.
5. The method of claim 1 , wherein the first layer is directly on the tubular member.
6. The method of claim 1 , wherein the first layer is on only a portion of the tubular member.
7. The method of claim 1 , wherein the first layer is on substantially an entire surface of the tubular member.
8. The method of claim 1 , wherein the first layer is on an inner surface of the tubular member.
9. The method of claim 1 , wherein the first layer is on an outer surface of the tubular member.
10. The method of claim 1 , wherein a portion of the first layer is removed with the portion of the tubular member.
11. The method of claim 1 , wherein the tubular member has a second layer, the first and second layers being on opposing surfaces of the tubular member, and the method comprises removing a portion of the tubular member and the first and second layers, and removing the first and second layers from the tubular member.
12. The method of claim 1 , wherein the tubular member is provided by co-drawing a first member that forms the tubular member and a second member that forms the first layer on an inner surface of the tubular member.
13. The method of claim 1 , wherein the tubular member is provided by co-drawing a first member that forms the tubular member and a second member that forms the first layer on an outer surface of the tubular member.
14. The method of claim 1 , further comprising forming the first layer on the tubular member.
15. The method of claim 14 , wherein the first layer comprises a metal and is formed by a process selected from a group consisting of electrodeposition and vapor deposition of the metal.
16. The method of claim 1 , wherein the stent comprises struts, and the removing of the portion of the tubular member comprises forming the struts.
17. The method of claim 1 , wherein the portion of the tubular member is removed by a laser.
18. The method of claim 1 , wherein the first layer is removed by dissolving the first layer.
19. The method of claim 1 , wherein the first layer is removed by melting the first layer.
20. The method of claim 1 , wherein the first layer is removed by mechanically removing the first layer.
21. The method of claim 1 , wherein the tubular member comprises a material selected from a group consisting of platinum, gold, palladium, rhenium, tantalum, tungsten, molybdenum, rhenium, nickel, cobalt, stainless steel, Nitinol, and alloys thereof.
22. The method of claim 1 , wherein the tubular member comprises a material selected from a group consisting of platinum, gold, and tantalum.
23. The method of claim 1 , wherein the first layer comprises a material selected from a group consisting of steel, cadmium, lead, magnesium, tin, zinc, titanium, stainless steel, and aluminum.
24. The method of claim 1 , wherein the first layer comprises a steel.
25. The method of claim 1 , further comprising forming a drug-releasing layer on the stent.
26. The method of claim 1 , wherein the entire first layer is removed from the tubular member.
27. The method of claim 1 , wherein an entire surface portion of the first layer is removed from the tubular member.
28. A method of making a stent, the method comprising:
providing a member having a first layer, the first layer and the member having different metallic compositions and having a first thickness;
removing a portion of the member to define an opening through the member;
removing a portion of the first layer from the member, wherein the member and the first layer have a reduced second thickness; and
forming the member into the stent.
29. The method of claim 28 , wherein the member has opposing edges, and the stent is formed by connecting the edges.
30. The method of claim 28 , wherein the stent is formed by forming the member into a tube.
31. The method of claim 28 , wherein the member is tubular.
32. The method of claim 28 , wherein the member and the first layer comprise metals.
33. The method of claim 28 , further comprising finishing the member into the stent.
34. The method of claim 33 , wherein the tubular member is finished by electropolishing.
35. The method of claim 28 , wherein the first layer is directly on the member.
36. The method of claim 28 , wherein the first layer is on only a portion of the member.
37. The method of claim 28 , wherein the first layer is on substantially an entire surface of the member.
38. The method of claim 28 , wherein a portion of the first layer is removed with the portion of the member.
39. The method of claim 28 , wherein the member has a second layer, the first and second layers being on opposing surfaces of the member, and the method comprises removing a portion of the member and the first and second layers, and removing the first and second layers from the member.
40. The method of claim 28 , further comprising forming the first layer on the member.
41. The method of claim 40 , wherein the first layer comprises a metal and is formed by a process selected from a group consisting of electrodeposition and vapor deposition of the metal.
42. The method of claim 28 , wherein the stent comprises struts, and the removing of the portion of the member comprises forming the struts.
43. The method of claim 28 , wherein the portion of the member is removed by a laser.
44. The method of claim 28 , wherein the first layer is removed by dissolving the first layer.
45. The method of claim 28 , wherein the first layer is removed by melting the first layer.
46. The method of claim 28 , wherein the first layer is removed by mechanically removing the first layer.
47. The method of claim 28 , wherein the member comprises a material selected from a group consisting of platinum, gold, palladium, rhenium, tantalum, tungsten, molybdenum, rhenium, nickel, cobalt, stainless steel, Nitinol, and alloys thereof.
48. The method of claim 28 , wherein the member comprises a material selected from a group consisting of platinum, gold, and tantalum.
49. The method of claim 28 , wherein the first layer comprises a material selected from a group consisting of steel, cadmium, lead, magnesium, tin, zinc, and aluminum.
50. The method of claim 28 , wherein the first layer comprises a steel.
51. The method of claim 28 , further comprising forming a drug-releasing layer on the stent.
52. The method of claim 28 , wherein the entire first layer is removed from the member.
53. The method of claim 28 , wherein an entire surface portion of the first layer is removed from the member.
54. A method of making a stent having struts, the method comprising:
providing a tubular member having a first layer, the first layer and the tubular member having different metallic compositions and having a first thickness;
removing a portion of the tubular member to form the struts and a portion of the first layer; and
removing the first layer from the tubular member to provide the stent, wherein the tubular member has a second thickness.
55. The method of claim 54 , wherein the first layer is on an inner surface of the tubular member.
56. The method of claim 54 , wherein the first layer is on an outer surface of the tubular member.
57. The method of claim 54 , wherein the tubular member comprises a second layer on the tubular member, the first and second layers being on opposing surfaces of the tubular member.
58. The method of claim 54 , wherein the first layer is on an entire surface of the tubular member.
59. The method of claim 54 , further comprising forming a drug-releasing layer on the stent.