Guidewire with tactile feel

Patent metadata

Field	Value
Publication number	US-2018193606-A1
Application number	US-201815864557-A
Country	US
Kind code	A1
Filing date	Jan 8, 2018
Priority date	Jan 9, 2017
Publication date	Jul 12, 2018
Grant date	—

Abstract

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guidewire. The guidewire may include a core wire having a body region and a distal tip region. A distal tip member may be disposed along the distal tip region. The distal tip member may have a proximal end. A sleeve may be disposed along the body region. The sleeve may be disposed adjacent to the proximal end of the distal tip member and extending proximally therefrom. The sleeve may include a first member and a heat shrink member. The first member may have an uneven outer surface.

First claim

What is claimed is:

1 . A guidewire, comprising:
a core wire having a body region and a distal tip region; a distal tip member disposed along the distal tip region, the distal tip member having a proximal end; a sleeve disposed along the body region, the sleeve being disposed adjacent to the proximal end of the distal tip member and extending proximally therefrom; wherein the sleeve includes a first member and a heat shrink member; and wherein the first member has an uneven outer surface.

2 . The guidewire of claim 1 , wherein the core wire includes a nickel-titanium alloy.

3 . The guidewire of claim 1 , wherein the core wire includes stainless steel.

4 . The guidewire of claim 1 , wherein the first member includes a braid.

5 . The guidewire of claim 1 , wherein the first member includes a coil.

6 . The guidewire of claim 1 , wherein the first member includes a helically-oriented region.

7 . The guidewire of claim 1 , wherein the sleeve is designed to have a substantially constant outer surface prior to manufacturing the guidewire.

8 . The guidewire of claim 7 , wherein the heat shrink member is designed to shrink during manufacturing of the guidewire such that the sleeve has an uneven outer surface after manufacturing the guidewire.

9 . The guidewire of claim 1 , wherein the first member includes a polymer.

10 . The guidewire of claim 1 , wherein the first member includes a metal.

11 . The guidewire of claim 1 , wherein the first member is disposed radially inward of the heat shrink member.

12 . A method for manufacturing a guidewire, the method comprising:
disposing a distal tip member along a distal tip region of a core wire; disposing a sleeve along a body region of the core wire; wherein the sleeve includes a first member having an uneven outer surface and a heat shrink member; wherein the sleeve has a substantially constant outer surface; applying heat to the sleeve; and wherein applying heat the sleeve reduces the heat shrink member and alters the outer surface of the sleeve.

13 . The method of claim 12 , wherein the sleeve includes a co-extrusion of the first member and the heat shrink member.

14 . The method of claim 12 , wherein the first member includes a braid.

15 . The method of claim 12 , wherein the first member includes a coil.

16 . The method of claim 12 , wherein the first member includes a polymer.

17 . A method for manufacturing a guidewire, the method comprising:
disposing a distal tip member along a distal tip region of a core wire; disposing a composite sleeve along a body region of the core wire; wherein the composite sleeve includes a metallic inner member having an uneven outer surface and an outer heat shrink tube; wherein the composite sleeve has a substantially constant outer surface; applying heat to the composite sleeve; and wherein applying heat the composite sleeve reduces the heat shrink tube and alters the outer surface of the composite sleeve such that the uneven outer surface of the metallic inner member defines a textured surface along the guidewire.

18 . The method of claim 17 , wherein the composite sleeve includes a co-extrusion of the metallic inner member and the heat shrink tube.

19 . The method of claim 17 , wherein the metallic inner member includes a braid.

20 . The method of claim 17 , wherein the metallic inner member includes a coil.

Assignees

• Boston Scient Scimed Inc

Inventors

• Patel Mayur Kiran
• Storbeck Gene T
• Tang Sacha

Classifications

• A61L31/048

  obtained by reactions only involving carbon-to-carbon unsaturated bonds (A61L31/041 takes precedence) · CPC title

• A61M2205/582

  by tactile feedback · CPC title

• A61M25/09 Primary

  Guide wires · CPC title

• A61L31/022

  Metals or alloys · CPC title

• A61L31/06

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(A61L31/041 takes precedence)} · CPC title