Self-expanding stent and stent delivery system with distal protection
First Claim
1. A self-expanding stent and stent delivery system comprising:
- a balloon catheter comprised of an elongated catheter having a delivery lumen, proximal and distal sections, and an expandable balloon mounted on the distal section of said elongated catheter;
an elongated core member including a stop member extending radially outward from said elongated core member and having proximal and distal ends, said elongated core member slidably disposed within the delivery lumen of said elongated catheter;
a self-expanding stent mounted on said elongated core member and engaging said stop member so that said self-expanding stent may be moved through said delivery lumen when said elongated core member is moved through said delivery lumen; and
, an expandable capture basket attached to the distal end of said elongated core member, said expandable capture basket serving the purpose of trapping embolic debris which may be dislodged from a diseased blood vessel during angioplasty of the blood vessel.
1 Assignment
0 Petitions
Accused Products
Abstract
A self-expanding stent and stent delivery system are provided for treating vascular diseases such as partially occluded blood vessels within the brain. The self-expanding stent is preferably mounted on an elongated core wire including proximal, intermediate and distal cylindrical members disposed about the core wire. The proximal, intermediate, and distal cylindrical members are spaced apart such that first and second gaps are formed. The stent, which includes anchor members, is mounted on the intermediate cylindrical member such that the anchor members interlock within the gaps between the cylindrical members. The self-expanding stent and elongated core wire are disposed within a delivery lumen of a balloon catheter such that the balloon catheter compresses and constrains the stent about the intermediate cylindrical member to thereby interlock the stent onto the core wire. The elongated core wire further includes an expandable capture basket attached to the distal end of the elongated core wire in order to capture embolic debris released during the angioplasty of the blood vessel and the deployment of the self-expanding stent.
-
Citations
25 Claims
-
1. A self-expanding stent and stent delivery system comprising:
-
a balloon catheter comprised of an elongated catheter having a delivery lumen, proximal and distal sections, and an expandable balloon mounted on the distal section of said elongated catheter;
an elongated core member including a stop member extending radially outward from said elongated core member and having proximal and distal ends, said elongated core member slidably disposed within the delivery lumen of said elongated catheter;
a self-expanding stent mounted on said elongated core member and engaging said stop member so that said self-expanding stent may be moved through said delivery lumen when said elongated core member is moved through said delivery lumen; and
,an expandable capture basket attached to the distal end of said elongated core member, said expandable capture basket serving the purpose of trapping embolic debris which may be dislodged from a diseased blood vessel during angioplasty of the blood vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A self expanding stent and stent delivery system comprising:
-
a balloon catheter comprised of an elongated catheter having a delivery lumen, proximal and distal sections, and an expandable balloon mounted on the distal section of said elongated catheter;
an elongated core member having proximal and distal ends, said elongated core member slidably disposed within the delivery lumen of said elongated catheter;
a self-expanding stent mounted on said elongated core member; and
,a self-expanding capture basket attached to the distal end of said elongated core member and spaced apart from said self-expanding stent, said self-expanding capture basket serving the purpose of trapping embolic debris which may be dislodged from a diseased blood vessel during angioplasty of the blood vessel. - View Dependent Claims (9, 10)
-
-
11. A self-expanding stent and stent delivery system comprising:
-
a deployment catheter having a lumen;
an elongated core member having proximal and distal ends, said elongated core member slidably disposed within the lumen of said deployment catheter;
a self-expanding stent mounted on said elongated core member such that said self-expanding stent is engaged with said elongated core member; and
,a self-expanding capture basket attached to the distal end of said core member, said self-expanding capture basket serving the purpose of trapping embolic debris which may be dislodged from a diseased blood vessel during placement of the self-expanding stent. - View Dependent Claims (12, 13, 14)
-
-
15. A self-expanding stent and stent delivery system comprising:
-
a deployment catheter having a lumen;
an elongated core member having proximal and distal ends, said elongated core member slidably disposed within the lumen of said deployment catheter;
a self-expanding stent mounted on said elongated core member such that said self-expanding stent is engaged with said elongated core member; and
,an expandable capture basket attached to the distal end of said elongated core member, said expandable capture basket being spaced apart from said self-expanding stent, and said expandable capture basket serving the purpose of trapping embolic debris which may be dislodged from a diseased blood vessel during placement of the self-expanding stent within the diseased blood vessel. - View Dependent Claims (16, 17, 18, 19)
-
-
20. A method of treating a stenosis comprising the steps of:
-
providing a balloon catheter comprised of an elongated catheter having a delivery lumen, a distal section, and an expandable balloon mounted on the distal section of said elongated catheter, an elongated core member having a distal end, a self-expanding capture basket attached to the distal end of said elongated core member, and a self-expanding stent mounted on said elongated core member and engaging said elongated core member so that said self-expanding stent may be moved through said delivery lumen when said elongated core member is moved through said delivery lumen;
inserting said balloon catheter into a vessel of a patient;
advancing said balloon catheter until the balloon catheter is positioned across a stenosis within the vessel;
inserting said self-expanding stent mounted on said elongated core member into the delivery lumen of said elongated catheter and advancing the self-expanding stent and elongated core member distally through the delivery lumen until the self-expanding stent is aligned approximate the stenosis;
expanding said balloon;
withdrawing said elongated catheter proximally to thereby allow the self-expanding capture basket and self-expanding stent to expand within the vessel;
disengaging the self-expanding stent from the elongated core member; and
,withdrawing said balloon catheter and elongated core member from the vessel of the patient.
-
-
21. A method of treating a stenosis comprising the steps of:
-
providing a balloon catheter comprised of an elongated catheter having a delivery lumen, a distal section, and an expandable balloon mounted on the distal section of said elongated catheter, an elongated core wire having a distal end, a self-expanding capture basket attached to the distal end of said core wire, and a self-expanding stent mounted on said core wire and engaging said core wire so that said self-expanding stent may be moved through said delivery lumen when said core wire is moved through said delivery lumen;
inserting said balloon catheter into a blood vessel of a patient;
advancing said balloon catheter until the balloon catheter is positioned across a stenosis within the blood vessel;
inserting said self-expanding stent mounted on said elongated core wire into the delivery lumen of the elongated catheter and advancing the self-expanding stent and elongated core wire distally through the delivery lumen until the self-expanding stent is aligned with the stenosis and said capture basket has exited the delivery lumen and expanded within the blood vessel;
expanding said balloon;
contracting said balloon;
withdrawing the elongated catheter proximally to thereby allow the self-expanding stent to expand within the blood vessel;
disengaging the self-expanding stent from the core wire; and
,withdrawing the balloon catheter and the core wire from the blood vessel of the patient.
-
-
22. A method of treating a stenosis comprising the steps of:
-
providing a balloon catheter comprised of an elongated catheter having a delivery lumen and an inflation lumen, said elongated catheter further including a distal section and an inflatable balloon mounted on the distal section of said elongated catheter and communicating with the inflation lumen, an elongated core member including a stop member extending radially outward from said elongated core member, a distal end, an expandable capture basket attached to the distal end of said elongated core member, and a self-expanding stent mounted on said elongated core member engaging said stop member so that said self-expanding stent may be moved through said lumen when said elongated core member is moved through said lumen;
inserting said balloon catheter into a blood vessel of a patient over a guidewire;
advancing said guidewire and said balloon catheter until the balloon catheter is positioned across a stenosis within the blood vessel;
removing said guidewire;
inserting said self-expanding stent mounted on said elongated core member into the delivery lumen of the elongated catheter;
advancing the self-expanding stent and elongated core member distally through the delivery lumen until the self-expanding stent is aligned approximate the stenosis and the capture basket has exited the delivery lumen and expanded within the blood vessel;
injecting a fluid into the inflation lumen of said elongated catheter to thereby inflate the balloon;
removing the fluid from within the inflation lumen to thereby deflate the balloon;
withdrawing the elongated catheter proximally to thereby allow the self-expanding stent to expand within the blood vessel;
disengaging the self-expanding stent from the core member;
retracting the elongated core member so that the capture basket collapses within the delivery lumen; and
,withdrawing the balloon catheter and the core member from the blood vessel of the patient.
-
-
23. A method of treating a stenosis comprising the steps of:
-
providing a deployment catheter having a lumen, an elongated core member having a distal end, a self-expanding capture basket attached to the distal end of said core member, and a self-expanding stent mounted on said elongated core member and engaging said elongated core member so that said self-expanding stent may be moved through said lumen when said elongated core member is moved through said lumen;
inserting said deployment catheter into a vessel of a patient;
advancing said deployment catheter until the deployment catheter is positioned across a stenosis within the vessel;
inserting said self-expanding stent mounted on said elongated core member into the lumen of said deployment catheter and advancing the self-expanding stent and elongated core member distally through the lumen until the self-expanding stent is aligned with the stenosis;
withdrawing said deployment catheter proximally to thereby allow the self-expanding capture basket and self-expanding stent to expand within the vessel;
disengaging the self-expanding stent from the elongated core member; and
,withdrawing said deployment catheter and elongated core member from the vessel of the patient.
-
-
24. A method of treating a stenosis comprising the steps of:
-
providing a deployment catheter having a lumen, an elongated core wire having a distal end, a self-expanding capture basket attached to the distal end of said core wire, and a self-expanding stent mounted on said core wire and engaging the core wire so that said self-expanding stent may be moved through the lumen of the deployment catheter when the core wire is moved through said lumen;
inserting said deployment catheter into a blood vessel of a patient;
advancing said deployment catheter until the deployment catheter is positioned across a stenosis within the blood vessel;
inserting said self-expanding stent mounted on the elongated core wire into the lumen of the deployment catheter;
advancing the self-expanding stent and elongated core wire distally through the lumen until the self-expanding stent is aligned approximate the stenosis and the capture basket has exited the lumen and expanded within the blood vessel;
withdrawing the deployment catheter proximally to thereby allow the self-expanding stent to expand within the blood vessel;
disengaging the self-expanding stent from the core wire; and
,withdrawing the deployment catheter and the core wire from the blood vessel of the patient.
-
-
25. A method of treating a stenosis comprising the steps of:
-
providing a deployment catheter having a lumen, an elongated core member having a stop member extending radially outward from said elongated core member and a distal end, a self-expanding capture basket attached to the distal end of the core member, and a self-expanding stent mounted on said elongated core member and engaging said stop member so that said self-expanding stent may be moved through said lumen when said elongated core member is moved through said lumen;
inserting said deployment catheter into a blood vessel of a patient over a guidewire;
advancing said guidewire and said deployment catheter until the deployment catheter is positioned across a stenosis within the blood vessel;
removing said guidewire;
inserting said self-expanding stent mounted on said elongated core member into the lumen of the deployment catheter and advancing the self-expanding stent and elongated core member distally through the lumen until the self-expanding stent is aligned approximate the stenosis and the capture basket has exited the lumen and expanded within the blood vessel;
withdrawing the deployment catheter proximally to thereby allow the self-expanding stent to expand within the blood vessel;
disengaging the self-expanding stent from the core member;
retracting the elongated core member until the capture basket has collapsed into the lumen of the deployment catheter; and
,withdrawing the deployment catheter and the elongated core member from the blood vessel of the patient.
-
Specification