Stent Deployment Device

• US 20080046063A1
• Filed: 03/22/2005
• Published: 02/21/2008
• Est. Priority Date: 03/31/2004
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Roberts, Kimberly, Boatman, Scott, Hoffa, Michael, Schaeffer, Darin
• Granted Patent: US 9,358,141 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/821 Ostial stents

Abstract

A stent deployment device (110) is provided for deploying a stent in a lumen of a patient. The device can include a catheter (112), a first balloon (122) positioned near a distal end of the catheter and a second balloon (123) adjacent to the first balloon. Alternatively, the second balloon can be positioned over the first balloon. The device also includes an expandable stent (210) positioned over the first balloon and the second balloon. The first balloon comprises a semi-compliant material, a noncompliant material or a compliant material. Similarly, the second balloon comprises a semi-compliant material, a noncompliant material or a compliant material. The first balloon is expandable to a first diameter, while the second balloon can be expandable to a second diameter.

Claims

1. A stent deployment device, comprising:

a catheter, a first balloon positioned near a distal end of the catheter and expandable to a first diameter, a second balloon adjacent to and extending at least over a first portion the first balloon, the second balloon being expandable to a second diameter that is larger than the first diameter, and an expandable stent positioned over the first balloon and over the second balloon, the stent being expandable over the first portion of the first balloon by expansion of the first balloon to the first diameter.

4. The device of claim 1, 2 or 3 wherein the first balloon comprises a semi-compliant material.

5. The device of claim 1, 2 or 3 wherein the first balloon comprises a noncompliant material.

6. The device of claim 1, 2 or 3 wherein the first balloon comprises a compliant material.

7. The device of claim 1, 2 or 3 wherein the second balloon comprises a semi-compliant material.

8. The device of claim 1, 2 or 3 wherein the second balloon comprises a noncompliant material.

9. The device of claim 1, 2 or 3 wherein the second balloon comprises a compliant material.

10. The device of claim 1, 2 or 3 wherein the expandable stent comprises an elongated body with a passage extending longitudinally therethrough.

11. The device of claim 10 wherein the expandable stent comprises stainless steel.

13. The device of claim 10 wherein the expandable stent comprises a plurality of bendable tabs located at a longitudinal end of the expandable stent.

14. The device of claim 13 wherein the plurality of bendable tabs are positioned coaxially over the second balloon.

15. The device of claim 13 wherein each of the bendable tabs are configured to bend substantially radially outwardly from the body of the expandable stent when a force is applied to the bendable tabs from an inside of the body of the expandable stent.

16. The device of claim 15 wherein each of the bendable tabs are configured to bend substantially radially outwardly from the body of the expandable stent when a force is applied to the bendable tabs by the second balloon.

17. The device of claim 13 wherein the expandable stent comprises a radio opaque marker positioned on the body of the expandable stent near one of the bendable tabs.

18. The device of claim 10 wherein the expandable stent comprises a radio opaque marker coupled to the body of the expandable stent.

20. The device of to claim 1, 2 or 3 wherein said second diameter is at least twenty-five percent greater than said first diameter.

21. The device of to claim 20 wherein the second diameter is at least fifty percent greater than the first diameter.

22. The device of to claim 21 wherein the second diameter is at least twice the first diameter.

2. A stent deployment device, comprising:

a catheter, a first balloon positioned near a distal end of the catheter and expandable to a first diameter, a second balloon positioned over a first portion of the first balloon and expandable to a second diameter, and an expandable stent positioned over the first and second balloons, the first balloon being expansible within the second balloon to cause expansion of the expandable stent to the first diameter over at least the first portion of the first balloon.

3. A stent deployment device, comprising:

a catheter, a first balloon positioned near a distal end of the catheter and expandable to a first diameter, a second balloon positioned near a distal end of the catheter at least partially over the first balloon, and expandable to a second diameter, and an expandable stent positioned partially over the first balloon and partially over the second balloon, at least a portion of the first balloon extending further toward the distal end of the catheter than a distal end of the second balloon, the first balloon being expansible within the overlapping portion of the second balloon to cause expansion of at least a portion of the expandable stent.

12. (canceled)

19. (canceled)