STENT, INTRALUMINAL STENT DELIVERY SYSTEM, AND METHOD OF TREATING A VASCULAR CONDITION

• US 20070225799A1
• Filed: 03/24/2006
• Published: 09/27/2007
• Est. Priority Date: 03/24/2006
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Doty, David
• Application Number:
  US11/277,419
• Publication Number:
  US 20070225799A1
• Time in Patent Office: Days
• US Class Current: 623/1.380
• CPC Class Codes: A61L 2300/00 Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
• CPC Class Codes: A61L 31/148 Materials at least partially resorbable by the body
• CPC Class Codes: A61L 31/16 Biologically active materials, e.g. therapeutic substances A61L31/047 takes precedence

Abstract

A stent, a stent delivery system, and a method of treating a vascular condition. The system includes a catheter, an inflatable member operably attached to the catheter, and a biodegradable stent disposed on the inflatable member. The stent includes a biodegradable flexible elongate member including an elongate member wall surrounding a cavity. A biodegradable reinforcing member is positioned within or adjacent the elongate member wall to support the biodegradable sleeve. A biodegradable photo-curable polymer positioned within the cavity. The method includes delivering a biodegradable stent having a cavity filled with a pre-polymer to a treatment site. A balloon is expanded to position the stent at the treatment site. The pre-polymer positioned within the stent cavity is photopolymerized. The deployed stent is supported in a radial direction with a biodegradable reinforcing member.

Claims

1. A biodegradable stent comprising:

a biodegradable flexible elongate member including an elongate member wall surrounding a cavity;

a biodegradable reinforcing member positioned within or adjacent the elongate member wall to support the biodegradable elongate member; and

a biodegradable photo-curable polymer positioned within the cavity of the elongate member.

2. The stent of claim 1 wherein at least one end portion of the elongate member is sealed.

3. The stent of claim 1 wherein the biodegradable elongate member comprises a coiled configuration.

4. The stent of claim 1 wherein the biodegradable photo-curable polymer provides support to the stent in a radial direction when in a deployed configuration.

5. The stent of claim 1 wherein the at least one therapeutic agent is eluted with a predetermined profile.

6. The stent of claim 1 wherein the reinforcing member comprises a magnesium wire.

7. The stent of claim 1 further comprising a photoinitiator positioned within the cavity.

8. An intraluminal stent delivery system comprising:

a catheter;

an inflatable member operably attached to the catheter;

a biodegradable stent disposed on the inflatable member, the stent comprising a biodegradable flexible elongate member including an elongate member wall surrounding a cavity, a biodegradable reinforcing member positioned within or adjacent the elongate member wall to support the biodegradable elongate member, and a biodegradable photo-curable polymer positioned within the cavity.

9. The system of claim 8 wherein at least one end portion of the elongate member is sealed.

10. The system of claim 8 wherein the reinforcing member comprises a coiled member.

11. The system of claim 8 wherein the biodegradable photo-curable polymer provides axial support to the stent.

12. The system of claim 8 wherein the at least one therapeutic agent is eluted with a predetermined profile.

13. The system of claim 8 further comprising at least one fiber optic member positioned adjacent the elongate member, wherein the fiber optic member is operably attached to a light source for polymerizing the photo-curable polymer.

14. The system of claim 13 wherein the at least one fiber optic member comprises a light diffusing member for radially diffusing light.

15. The system of claim 8 further comprising a photoinitiator positioned within the elongate member.

16. A method of treating a vascular condition, the method comprising:

delivering a biodegradable stent having a cavity filled with a pre-polymer to a treatment site;

expanding a balloon to position the stent at the treatment site;

photopolymerizing the pre-polymer positioned within the stent cavity; and

supporting the deployed stent in a radial direction with a biodegradable reinforcing member.

17. The method of claim 16 further comprising eluting at least one therapeutic agent from at least a portion of the stent.

18. The method of claim 17 wherein the at least one therapeutic agent is released with a predetermined profile.