Medical devices

• US 20050163954A1
• Filed: 01/22/2004
• Published: 07/28/2005
• Est. Priority Date: 01/22/2004
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Shaw, William J.
• Granted Patent: US 7,854,756 B2
• Time in Patent Office: Days
• US Class Current: 428/36.100
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61L 27/10 Ceramics or glasses
• CPC Class Codes: A61L 27/446 with other specific inorganic fillers other than those covered by A61L27/443 or A61L27/46
• CPC Class Codes: A61L 29/02 Inorganic materials
• CPC Class Codes: A61L 29/126 having a macromolecular matrix
• CPC Class Codes: A61L 29/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: A61L 31/026 Ceramic or ceramic-like structures, e.g. glasses
• CPC Class Codes: A61L 31/128 containing other specific inorganic fillers not covered by A61L31/126 or A61L31/127
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: Y10T 428/1314 Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]
• CPC Class Codes: Y10T 428/1362 Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

Medical devices including one or more ceramic fibers are disclosed. In some embodiments, each dimension of the ceramic fiber(s) is equal to or greater than one micron.

Claims

1. A medical device, comprising:

a structure comprising a first ceramic fiber comprising a first metalloid, wherein each dimension of the first ceramic fiber is equal to or greater than one micron.

2. The device of claim 1, wherein the first ceramic fiber further comprises a second metalloid.

3. The device of claim 1, wherein the first metalloid comprises an element selected from the group consisting of silicon and boron.

4. The device of claim 2, wherein the first ceramic fiber comprises silicon borocarbonitride.

5. The device of claim 1, wherein the first ceramic fiber further comprises a non-metallic element.

7. The device of claim 1, wherein the first ceramic fiber is at least about five microns long.

8. The device of claim 1, wherein the first ceramic fiber is from about five microns to about 25,000 microns long.

9. The device of claim 1, wherein the first ceramic fiber is at least about five microns wide.

10. The device of claim 1, wherein the first ceramic fiber is from about five microns to about 500 microns wide.

11. The device of claim 1, wherein the first ceramic fiber extends continuously along an entire length of the device.

12. The device of claim 1, wherein the first ceramic fiber extends helically about the device.

13. The device of claim 1, further comprising a second ceramic fiber different from the first ceramic fiber.

14. The device of claim 1, wherein the structure is a tubular member.

15. The device of claim 1, in the form of a stent.

16. The device of claim 1, further comprising a polymer layer carried by the structure.

17. The device of claim 1, in the form of a graft, a medical balloon, or a catheter.

18. The device of claim 1, further comprising a therapeutic agent.

46. The device of claim 1, in the form of a stent-graft.

6. (canceled)

19. A medical device, comprising:

a structure comprising

a ceramic fiber; and

a non-ceramic fiber, wherein the ceramic fiber is intertwined with the non-ceramic fiber, and the device is in the form of a stent, a stent-graft, or a graft.

20. The device of claim 19, wherein each dimension of the ceramic fiber is equal to or greater than one micron.

21. The device of claim 19, wherein the non-ceramic fiber comprises stainless steel.

22. The device of claim 19, wherein the non-ceramic fiber comprises a nickel-titanium alloy.

23. The device of claim 19, wherein the ceramic fiber is knitted with the non-ceramic fiber.

24. The device of claim 19, wherein the ceramic fiber is woven with the non-ceramic fiber.

25. The device of claim 19, wherein the ceramic fiber comprises a therapeutic agent.

26. A method of making a medical device, the method comprising:

co-knitting a ceramic fiber with a non-ceramic fiber, wherein each dimension of the ceramic fiber is equal to or greater than one micron, and the device is in the form of a stent, a stent-graft, or a graft.

27. A medical device, comprising:

a structure comprising

a mixture including a polymer and ceramic fibers, each dimension of the fibers being equal to or greater than one micron,

wherein at least one of the ceramic fibers comprises a metalloid.

28. The device of claim 27, wherein the ceramic fibers are at least about five microns long.

29. The device of claim 27, wherein the ceramic fibers are from about five microns to about 25,000 microns long.

30. A medical device, comprising:

a structure comprising

a first layer comprising a polymer; and

a second layer comprising a ceramic fiber comprising a metalloid.

31. The device of claim 30, wherein the first layer comprises a therapeutic agent.

32. The device of claim 30, wherein the ceramic fiber is knitted, woven, or braided.

33. A medical device, comprising:

a tubular structure; and

a polymer element on the tubular structure, wherein the polymer element comprises a ceramic fiber comprising a metalloid and each dimension of the ceramic fiber is equal to or greater than one micron.

34. The device of claim 33, in the form of a stent-graft.

35. The device of claim 33, wherein the ceramic fiber is from about ten microns to about 1,000 microns long.

36. The device of claim 33, wherein the ceramic fiber is from about ten microns to about 100 microns long.

37. The device of claim 33, wherein the ceramic fiber is from about one micron to about 50 microns wide.

38. The device of claim 33, wherein the ceramic fiber is about ten microns wide.

39. The device of claim 33, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 500;

1.

40. The device of claim 33, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 200;

1.

41. (canceled)

42. A graft comprising a ceramic fiber, wherein each dimension of the fiber is equal to or greater than one micron.

43. (canceled)

44. A medical balloon comprising a ceramic fiber, wherein each dimension of the fiber is equal to or greater than one micron.

45. (canceled)

47. A medical device, comprising:

a structure comprising

a ceramic fiber; and

a non-ceramic fiber, wherein the ceramic fiber is intertwined with the non-ceramic fiber, and the device is in the form of a medical balloon.

48. (canceled)

49. A method of making a medical device, the method comprising:

co-knitting a ceramic fiber with a non-ceramic fiber, wherein each dimension of the ceramic fiber is equal to or greater than one micron, and the device is in the form of a medical balloon.

50. (canceled)