Surface modified reinforcing member for medical device and method for making same

• US 7,744,587 B2
• Filed: 09/22/2003
• Issued: 06/29/2010
• Est. Priority Date: 09/22/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Murphy, Richard F.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): KOHARSKI, CHRISTOPHER
• Application Number:
  US10/667,909
• Publication Number:
  US 20050061771A1
• Time in Patent Office: 2,472 Days
• Field of Search: 604/524, 604/523, 604/525, 604/528, 600/381, 600/585, 264/171.2, 264/209.4
• US Class Current: 604/527
• CPC Class Codes: A61M 2025/0046 Coatings for improving slidability
• CPC Class Codes: A61M 2025/0047 the inner layer having a higher lubricity
• CPC Class Codes: A61M 25/0012 with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids

Abstract

Medical devices, medical device components, and methods of making the same. For example, one embodiment provides a method of making a reinforcing member adapted and configured for use in a medical device. The method includes providing one or more structural elements adapted and configured for creating the reinforcing member, the one or more structural elements including a surface having a portion with an initial surface area, and treating at least the portion of the surface of the one or more structural elements to provide a final surface area that is greater than the initial surface area. The one or more structural elements are used in creating the reinforcing member. The reinforcing member can then be incorporated into the structure of the medical device.

Claims

1. A medical device including a reinforcing member, the medical device formed by the following process:

providing one or more metallic filaments adapted and configured to be made into the reinforcing member for the medical device, the one or more metallic filaments including a metallic surface having a portion with an initial surface area, wherein the reinforcing member is a braid;

treating at least the portion of the surface of the one or more metallic filaments to provide a final surface area that is greater than the initial surface area;

creating the reinforcing member using the one or more metallic filaments; and

incorporating the reinforcing member into the construction of the medical device,

wherein the one or more metallic filaments each have a thickness and wherein the portion extends along each of the one or more metallic filaments for a length that is at least twice the thickness of the filament and wherein the portion encircles the metallic filament for the length,

wherein the portion has a profile that is constant along the length,

wherein other structural elements that have not undergone the treating step are also used in creating the braid.

2. The medical device of claim 1, wherein the medical device is a catheter.

3. The medical device of claim 1, wherein the reinforcing member includes an outer surface, an inner surface, and a lumen extending there through.

4. The medical device of claim 3, wherein incorporating the reinforcing member into the construction of the medical device includes connecting an outer layer to the outer surface of the reinforcing member.

5. The medical device of claim 4, wherein the outer layer comprises a polymer material.

6. The medical device of claim 3, wherein incorporating the reinforcing member into the construction of the medical device includes connecting an inner layer to the inner surface of the reinforcing structure.

7. The medical device of claim 6, wherein the inner layer comprises a polymer material.

8. The medical device of claim 1, wherein a plurality of the one or more metallic filaments each have a diameter and wherein the diameter of each of the plurality of metal filaments is constant along the portion subsequent to the treating step.

9. A medical device including a reinforcing member, the medical device formed by the following process:

providing one or more metallic filaments adapted and configured to be made into the reinforcing member for the medical device;

treating the surface of each of the one or more metallic filaments to roughen the surface and increase the surface area of the surface;

subsequent to the treatment step, forming a braid using the one or more metallic filaments; and

incorporating the braid into the construction of the medical device,

wherein other structural elements that have not undergone the treating step are also used in creating the braid.

10. The medical device of claim 9, wherein the step of incorporate the braid into the construction of the medical device includes the steps of providing a first polymeric layer having an outer surface and connecting the outer surface of the first polymeric layer directly to the braid.

11. The medical device of claim 9, wherein the step of incorporate the braid into the construction of the medical device includes the steps of providing a second polymer layer having an inner surface and connecting the inner surface of the second polymeric layer directly to the braid.