Rapid exchange stent delivery system and associated components

• US 8,685,078 B2
• Filed: 04/29/2013
• Issued: 04/01/2014
• Est. Priority Date: 03/14/2001
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Gerdts, Michael D., Bronson, Mary S., Powell, August L.
• Primary Examiner(s): Erezo, Darwin
• Assistant Examiner(s): SHIPLEY, AMY R
• Application Number:
  US13/872,741
• Publication Number:
  US 20130226308A1
• Time in Patent Office: 337 Days
• Field of Search: None
• US Class Current: 623/1.11
• 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, comprising:

an inner member having a distal region and an inner guidewire opening having a first length;

an implant disposed about the distal region of the inner member;

an outer member slidably disposed about the inner member, the outer member including an outer guidewire opening having a second length different from the first length;

a ramp member disposed adjacent to the outer guidewire opening and extending into the inner guidewire opening; and

wherein the ramp member is movable relative to the inner guidewire opening.

2. The medical device of claim 1, wherein a solid member is disposed within a proximal region of the inner member.

3. The medical device of claim 2, wherein the solid member is positioned proximal of the inner guidewire opening.

4. The medical device of claim 2, wherein the solid member has a tapered distal end.

5. The medical device of claim 1, wherein the first length is longer than the second length.

6. The medical device of claim 1, wherein the implant includes a self-expanding stent.

7. The medical device of claim 1, wherein the implant includes a biliary stent.

8. The medical device of claim 1, wherein the inner member includes a distal head.

9. The medical device of claim 8, wherein a distal bonding region is disposed adjacent to the distal head, the distal bonding region being capable of being disposed within the outer member.

10. The medical device of claim 1, wherein the inner member includes a stent cup.

11. The medical device of claim 1, wherein the outer member includes a holding sleeve.

12. The medical device of claim 11, wherein the ramp member is a portion of the holding sleeve.

13. A medical device, comprising:

an inner tubular member having a distal region;

wherein the inner tubular member has a first guidewire opening formed therein;

wherein the first guidewire opening has a first length;

an implant disposed about the distal region of the inner tubular member;

an outer tubular member slidably disposed about the inner tubular member;

wherein the outer tubular member has a second guidewire opening formed therein;

wherein the second guidewire opening has a second length different from the first length; and

a movable ramp disposed along the outer tubular member and extending into the first guidewire opening.

14. The medical device of claim 13, wherein a solid member is disposed within a proximal region of the inner tubular member and extends proximally from the first guidewire opening.

15. The medical device of claim 13, wherein the first length is longer than the second length.

16. The medical device of claim 13, wherein the implant includes a self-expanding stent.

17. The medical device of claim 13, wherein the outer tubular member includes a holding sleeve.

18. The medical device of claim 17, wherein the movable ramp is a portion of the holding sleeve.

19. The medical device of claim 13, wherein the movable ramp is movable within the first guidewire opening.

20. A medical device, comprising:

an inner tubular member having a distal region and a proximal region;

wherein the inner tubular member has a first guidewire opening formed therein;

wherein the first guidewire opening has a first length;

a solid member disposed within the proximal region of the inner tubular member and extending proximally from the first guidewire opening;

a self-expanding stent disposed about the distal region of the inner tubular member;

an outer tubular member slidably disposed about the inner tubular member;

wherein the outer tubular member has a second guidewire opening formed therein;

wherein the second guidewire opening has a second length shorter than the first length;

a movable ramp disposed along the outer tubular member and extending into the first guidewire opening; and

wherein the movable ramp is movable within the first guidewire opening.