Reinforced medical device

• US 20040167438A1
• Filed: 02/26/2003
• Published: 08/26/2004
• Est. Priority Date: 02/26/2003
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Sharrow, James S.
• Application Number:
  US10/375,494
• Publication Number:
  US 20040167438A1
• Time in Patent Office: Days
• US Class Current: 600/585
• CPC Class Codes: A61M 2025/09075 having a core without a coil possibly combined with a sheath
• CPC Class Codes: A61M 2025/09133 having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

A medical device and methods of making and using the same. The invention may include a shaft having a proximal region and a distal region. A jacket may be disposed on the proximal region. A reinforcing member or braid may be disposed over at least a portion of the jacket.

Claims

1. A guidewire, comprising:

an elongate core member having a proximal region and a tapered distal region;

a jacket disposed on at least the proximal region of the core member; and

a braid disposed over at least a portion of the jacket.

2. The guidewire of claim 1, wherein core member includes nickel-titanium alloy.

3. The guidewire of claim 1, wherein the jacket includes a polymer.

4. The guidewire of claim 1, wherein the proximal region includes a proximal end and a distal end, and wherein the jacket extends from a proximal end of the proximal region to the distal end of the proximal region.

5. The guidewire of claim 1, wherein the braid includes a metal.

6. The guidewire of claim 1, wherein the braid includes a non-metallic material.

7. The guidewire of claim 1, wherein the braid includes a polymeric material.

8. The guidewire of claim 1, wherein the braid includes poly-para-phenylene terephthalamide.

9. The guidewire of claim 1, wherein at least a portion of the braid is embedded within the jacket.

10. The guidewire of claim 9, further comprising a second coating disposed over the jacket.

11. The guidewire of claim 10, wherein the second coating comprises a layer of polymer material.

12. The guidewire of claim 1, wherein the braid is disposed on an outside surface of the jacket.

13. The guidewire of claim 12, wherein at least a portion of the braid defines an outer surface of the guidewire.

14. The guidewire of claim 12, further comprising a second coating disposed over the braid.

15. The guidewire of claim 14, wherein the second coating comprises a layer of polymer material.

16. A medical device, comprising:

an elongate shaft including a solid core member;

the core member including a proximal region and a distal region;

a polymeric jacket disposed on the core member; and

a braid disposed over at least a portion of the jacket.

17. The medical device of claim 16, wherein core member includes nickel-titanium alloy.

18. The medical device of claim 16, wherein the braid includes a metal.

19. The medical device of claim 16, wherein the braid includes a polymeric material.

20. The medical device of claim 16, wherein the braid includes poly-paraphenylene terephthalamide.

21. The medical device of claim 16, wherein at least a portion of the braid is embedded within the jacket.

22. The medical device of claim 21, further comprising a second coating disposed over the jacket.

23. The medical device of claim 16, wherein the braid is disposed on an outside surface of the jacket.

24. The medical device of claim 23, wherein at least a portion of the braid defines an outer surface of the medical device.

25. The medical device of claim 23, further comprising a second coating disposed over the braid.

26. A method for manufacturing a guidewire, comprising the steps of:

providing an elongate core member having a proximal region and a tapered distal region;

disposing a polymeric jacket on the proximal region; and

disposing a braid over at least a portion of the jacket.

27. The method of claim 26, wherein the step of disposing a braid over at least a portion of the jacket includes embedding the braid in the jacket.

28. The method of claim 27, further comprising the step of disposing a second coating over the jacket.

29. The method of claim 26, wherein the step of disposing a braid over at least a portion of the jacket includes disposing the braid on an outside surface of the jacket.

30. The method of claim 29, further comprising the step of disposing a second coating over the braid.

31. The method of claim 29, wherein the step of disposing the braid on an outside surface of the jacket includes defining an exterior surface of the guidewire with the braid.

32. A guidewire, comprising:

a solid core member having a proximal section and a distal section;

a polymeric jacket disposed over the proximal section; and

means for transmitting torque from the proximal section to the distal section, the means for transmitting torque being disposed over at least a portion of the jacket.

33. A guidewire, comprising:

a solid core member having a proximal section and a distal section;

a polymeric jacket disposed over the proximal section; and

means for conveying force from the proximal section to the distal section, the means for transmitting torque being disposed over at least a portion of the jacket.

34. A guidewire, comprising:

an elongate shaft including a solid core member;

the core member including a proximal region and a distal region;

a polymeric jacket disposed on the core member;

a reinforcing member disposed over at least a portion of the jacket; and

wherein the reinforcing member comprises a coil or braid.

35. The guidewire of claim 34, wherein the reinforcing member comprises a coil.

36. The guidewire of claim 34, wherein the shaft includes stainless steel, nickel-titanium alloy, nickel-chromium alloy, nickel-chromium-iron alloy, cobalt alloy, tungsten, tungsten alloy, Elgiloy, MP35N, a high performance polymer, or combinations thereof.