Rapid exchange stent delivery system and associated components

• US 20070016282A1
• Filed: 09/22/2006
• Published: 01/18/2007
• Est. Priority Date: 03/14/2001
• Status: Active Grant

• Current Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Gerdts, Michael, Bronson, Mary, Powell, August
• Granted Patent: US 7,468,053 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/962 having an outer sleeve
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters

Abstract

A rapid exchange stent delivery catheter includes an inner tubular member having a proximal portion, a distal portion, a stent holding portion located adjacent the distal portion of the inner member, and a guide wire lumen extending from a proximal guide wire opening disposed distal of the proximal portion of the inner member to a distal guide wire opening disposed at a distal end of the inner member. The proximal guide wire opening has a first length. An outer tubular member is slidably disposed about the inner member. The outer member has a proximal portion, a distal portion, and a guide wire opening disposed distal of the proximal portion of the outer member. The guide wire opening of the outer member has a second length that is shorter than the first length and a guide wire ramp extends into, and is movable along the first length.

Claims

1. A medical device assembly, comprising:

a first tubular member, the first tubular member having a distal tip, a holding region for holding an expandable medical device thereon, and a first proximal region;

wherein a first opening is defined in the first tubular member adjacent to the holding region, the first opening having a first length;

a second tubular member slidably disposed over the first tubular member, the second tubular member including a distal end, a covering region, and a second proximal region;

wherein a second opening is defined in the second tubular member adjacent to the covering region, the second opening having a second length; and

wherein the first length is longer than the second length.

2. The medical device assembly of claim 1, wherein the second tubular member includes a ramp that extends into the first opening.

3. The medical device assembly of claim 2, wherein the first tubular member defines a lumen therein and wherein the ramp extends into and is moveable within the lumen.

4. The medical device assembly of claim 1, wherein the expandable medical device includes a stent.

5. The medical device assembly of claim 1, further comprising a stent disposed on the holding region;

6. The medical device assembly of claim 1, wherein the distal tip of the first tubular member restricts longitudinal movement of the second tubular member relative to the first tubular member.

7. The medical device assembly of claim 1, further comprising a holding sleeve coupled to the holding region.

8. The medical device assembly of claim 1, further comprising a stent cup coupled to the holding region.

9. A medical device assembly, comprising:

a first tubular member, the first tubular member having a distal tip, a holding region for holding an expandable medical device thereon, and a first proximal region;

wherein a first opening is defined in the first tubular member adjacent to the holding region;

a second tubular member slidably disposed over the first tubular member, the second tubular member including a distal end, a covering region, and a second proximal region;

wherein a second opening is defined in the second tubular member adjacent to the covering region; and

wherein the second tubular member includes a ramp that extends into the first opening.

10. The medical device assembly of claim 9, wherein the first tubular member defines a lumen therein and wherein the ramp extends into and is moveable within the lumen.

11. The medical device assembly of claim 9, wherein the expandable medical device includes a stent.

12. The medical device assembly of claim 9, further comprising a stent disposed on the holding region;

13. The medical device assembly of claim 9, wherein the distal tip of the first tubular member restricts longitudinal movement of the second tubular member relative to the first tubular member.

14. The medical device assembly of claim 9, further comprising a holding sleeve coupled to the holding region.

15. The medical device assembly of claim 9, further comprising a stent cup coupled to the holding region.

16. A medical device assembly, comprising:

an inner tubular member, the inner tubular member having a distal tip, a holding region for holding an expandable medical device thereon, a holding sleeve coupled to the holding region, a stent cup disposed adjacent to the holding sleeve, and a first proximal region;

wherein a first opening is defined in the inner tubular member adjacent to the holding region;

an outer tubular member slidably disposed over the inner tubular member, the outer tubular member including a distal end, a covering region, and a second proximal region; and

wherein a second opening is defined in the outer tubular member adjacent to the covering region.

17. The medical device assembly of claim 16, wherein the first opening has a first length, wherein the second opening has a second length, and wherein the first length is longer than the second length.

18. The medical device assembly of claim 16, wherein the outer tubular member includes a ramp that extends into the first opening.

19. The medical device assembly of claim 18, wherein the inner tubular member defines a lumen therein and wherein the ramp extends into and is moveable within the lumen.

20. The medical device assembly of claim 16, wherein the expandable medical device includes a stent.

21. The medical device assembly of claim 16, further comprising a stent disposed on the holding region;

22. The medical device assembly of claim 16, wherein the distal tip of the inner tubular member restricts longitudinal movement of the outer tubular member relative to the inner tubular member.

23. A medical device assembly, comprising:

an inner tubular member, the inner tubular member having a distal tip, a holding region for holding an expandable medical device thereon, means for holding the expandable medical device coupled to the holding region, and a first proximal region;

wherein a first opening is defined in the inner tubular member adjacent to the holding region;

an outer tubular member slidably disposed over the inner tubular member, the outer tubular member including a distal end, a covering region, and a second proximal region; and

wherein a second opening is defined in the outer tubular member adjacent to the covering region.