Rapid exchange stent delivery system and associated components
View Patent ↗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.
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.