Rapid exchange stent delivery system and associated components

• US 20050171473A1
• Filed: 03/30/2005
• Published: 08/04/2005
• 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 7,115,109 B2
• Time in Patent Office: Days
• US Class Current: 604/103.40
• 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 rapid exchange stent delivery catheter comprising:

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, wherein the proximal guide wire opening has a first length; and

an outer tubular member slidably disposed about the inner member, the outer member having a proximal portion, a distal portion, and a guide wire opening disposed distal of the proximal portion of the outer member, wherein the guide wire opening of the outer member has a second length that is shorter than the first length and a guide wire ramp extending into, and movable along the first length.

2. A rapid exchange stent delivery catheter according to claim 1, wherein the stent holding portion has a third length and the first length is greater than the third length.

3. A rapid exchange stent delivery catheter according to claim 1, wherein a proximal handle is connected to the proximal portion of the inner tubular member.

4. A rapid exchange stent delivery catheter according to claim 1, wherein a distal handle is connected to the proximal end of the outer tubular member.

5. A rapid exchange stent delivery catheter according to claim 1, wherein a proximal handle is connected to the proximal portion of the inner tubular member and a distal handle is connected to the proximal end of the outer tubular member.

6. A rapid exchange stent delivery catheter according to claim 5, wherein the distal handle can be longitudinally displaced relative to the proximal handle to selectively expose at least a portion of the stent holding portion.

7. A rapid exchange stent delivery catheter according to claim 5, wherein the distal handle can be longitudinally displaced toward the proximal handle to retract the outer tubular member and expose at least a portion of the stent holding portion.

8. A rapid exchange stent delivery catheter according to claim 1, further comprising a stent disposed about the stent holding portion.

9. A rapid exchange stent delivery catheter according to claim 8, wherein a proximal handle is connected to the proximal portion of the inner tubular member and a distal handle is connected to the proximal end of the outer tubular member.

10. A rapid exchange stent delivery catheter according to claim 9, wherein the distal handle can be longitudinally displaced relative to the proximal handle to selectively expose at least a portion of the stent.

11. A rapid exchange stent delivery catheter according to claim 9, wherein the distal handle can be longitudinally displaced toward the proximal handle to retract the outer tubular member and expose at least a portion of the stent.

12. A rapid exchange stent delivery catheter according to claim 9, wherein the distal handle can be longitudinally displaced a distance that is greater than the third length toward the proximal handle to retract the outer tubular member and expose at least a portion of the stent.