IP Library › Granted Patent US 7,160,317
Granted Patent B2
US 7,160,317 · App. 10/035,218 · Granted Jan 9, 2007

Multiple-wing balloon catheter to reduce damage to coated expandable medical implants

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Quick Facts
Patent No.
US 7,160,317
App. No.
10/035,218
Granted
Jan 9, 2007
Kind
B2
Abstract

Method and system for reducing the damage to a coated medical implant during the expansion of the coated implant is provided. The method may include providing a coated medical implant, providing a balloon catheter having a multi-wing balloon, the multi-wing balloon having at least four expandable folds, and crimping the medical implant onto the multi-wing balloon. The system may include a coated medical implant and a multi-wing balloon catheter having at least four expandable wings, the expandable wings in contact with the coating of the medical implant.

Claims (16)

1. A method of assembling a coated medical implant delivery system, the method comprising:

providing an internally coated medical implant having an inner surface and an outer surface, the inner surface of the implant at least partially coated with a coating;

providing a balloon catheter having a multi-wing balloon, the multi-wing balloon having a plurality of expandable folds;

providing an elastic membrane sized to surround the expandable folds of the multi-wing balloon, the elastic membrane having a coating on an inside surface and on an outside surface;

positioning the elastic membrane around the expandable folds of the multi-wing balloon; and

positioning the medical implant around the elastic membrane after the elastic membrane has been positioned around the multi-wing balloon.

2. The method of claim 1 further comprising:

crimping the coated medical implant around the elastic membrane and onto the multi-wing balloon.

3. The method of claim 1 further comprising:

treating a surface of the folds of the multi-wing balloon to reduce friction.

4. The method of claim 3 wherein treating a surface of the folds of the multi-wing balloon to reduce friction includes polishing the balloon.

5. The method of claim 3 wherein treating a surface of the folds of the multi-wing balloon to reduce friction includes heating the balloon.

6. The method of claim 3 wherein the treatment includes coating the elastic membrane and wherein the implant is a stent.

7. The method of claim 1 wherein the multi-wing balloon expands in a sweeping spiral fashion.

8. The method of claim 1 wherein the elastic membrane comprises a latex.

9. The method of claim 1 wherein the coating of the medical implant includes a bio-compatible polymer and a therapeutic agent.

Assignments (1)
CHANGE OF NAME Recorded Nov 6, 2006
From: SCIMED LIFE SYSTEMS, INC.
To: BOSTON SCIENTIFIC SCIMED, INC.
Reel/Frame 018505/0868 →