Elongate Medical Device with Continuous Reinforcement Member

• US 20130046285A1
• Filed: 07/30/2012
• Published: 02/21/2013
• Est. Priority Date: 10/27/2005
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Griffin, Stephen, Lim, Elaine, Chan, Huey Quoc
• Application Number:
  US13/561,193
• Publication Number:
  US 20130046285A1
• Time in Patent Office: Days
• US Class Current: 604/527
• CPC Class Codes: A61M 2025/006 having a special surface topography or special surface properties, e.g. roughened or knurled surface
• CPC Class Codes: A61M 25/0013 Weakening parts of a catheter tubing, e.g. by making cuts in the tube or reducing thickness of a layer at one point to adjust the flexibility
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/0051 made from fenestrated or weakened tubing layer
• CPC Class Codes: A61M 25/0053 having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
• CPC Class Codes: A61M 25/0054 with regions for increasing flexibility

Abstract

An elongate medical device including an inner elongate member, a reinforcing member, and an outer tubular member is described. The reinforcing member may be a helically wound continuous wire including a first portion having a first cross-sectional profile, a second portion having a second cross-sectional profile, and a transition region located between the first portion and the second portion. The first cross-sectional profile may be different from the second cross-sectional profile. In some embodiments, the first cross-sectional profile may be circular or non-circular and the second cross-sectional profile may be circular or non-circular.

Claims

1. (canceled)

2. A medical device, comprising:

a tubular member having a proximal end and a distal end;

wherein the tubular member has a plurality of slots formed therein;

a liner disposed within the tubular member;

wherein the liner has a distal end region disposed distally of the distal end of the tubular member; and

wherein the liner has a proximal end region disposed proximally of the proximal end of the tubular member.

3. The medical device of claim 2, wherein the liner includes a plurality of layers.

4. The medical device of claim 2, wherein the liner includes a reinforcement layer.

5. The medical device of claim 4, wherein the reinforcement layer includes a braid.

6. The medical device of claim 4, wherein the reinforcement layer includes a polymer.

7. The medical device of claim 4, wherein the reinforcement layer includes a polymer braid.

8. The medical device of claim 2, further comprising a hub secured to the tubular member and to the liner.

9. The medical device of claim 2, wherein the liner is free from attachment to the tubular member along at least a portion of the length of the liner.

10. The medical device of claim 2, wherein the tubular member includes a nickel-titanium alloy.

11. The medical device of claim 2, wherein a coating is disposed along an outer surface of the tubular member.

12. The medical device of claim 2, wherein a tip member is disposed along the distal end region of the liner.

13. The medical device of claim 2, wherein the liner is secured to the tubular member at one or more attachment points.

14. A catheter, comprising:

a catheter shaft, the catheter shaft including an outer nickel-titanium alloy tubular member and an inner liner;

wherein the outer tubular member has a plurality of slots formed therein;

wherein the inner liner is free from attachment to the outer tubular member along at least a portion of the length of the inner liner;

wherein the inner liner has a distal end region disposed distally of a distal end of the outer tubular member;

wherein the inner liner has a proximal end region disposed proximally of a proximal end of the outer tubular member; and

wherein the inner liner includes a reinforcing member.

15. The catheter of claim 14, wherein the reinforcing member includes a braid.

16. The catheter of claim 14, wherein the reinforcing member include a polymer.

17. The catheter of claim 14, wherein the reinforcing member include a polymer braid.

18. The catheter of claim 14, wherein a tip member is disposed along the distal end region of the inner liner.

19. The catheter of claim 14, wherein the inner liner is secured to the outer tubular member at one or more attachment points.

20. A catheter, comprising:

a catheter shaft, the catheter shaft including an outer nickel-titanium alloy tubular member and a multi-layer inner liner;

wherein the outer tubular member has a plurality of slots formed therein;

wherein the inner liner is free from attachment to the outer tubular member along at least a portion of the length of the inner liner;

wherein the inner liner has a distal end region disposed distally of a distal end of the outer tubular member;

a tip member disposed on the distal end region of the inner liner;

wherein the inner liner has a proximal end region disposed proximally of a proximal end of the outer tubular member;

a hub coupled to the proximal end region; and

wherein the inner liner includes a braided reinforcing member.

21. The catheter of claim 20, wherein the braided reinforcing member includes a polymer.