Subintimal re-entry catheter and retrograde recanalization
First Claim
Patent Images
1. A method of recanalizing a blood vessel having an occlusion therein, the method comprising:
- advancing a guidewire through a lumen of a blood vessel to a location proximal of a proximal end of an occlusion;
directing a distal end of the guidewire radially outward from the lumen of the blood vessel into a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel to a location distal of a distal end of the occlusion;
advancing a recanalization catheter over the guidewire into the subintimal space to a position in the subintimal space in which a distal portion of the recanalization catheter is located distal of the distal end of the occlusion, the recanalization catheter including an elongate tubular member through which the guidewire is positioned, and a balloon surrounding the elongate tubular member and affixed to an exterior surface of the elongate tubular member; and
re-entering the lumen of the blood vessel distal of the distal end of the occlusion with a flexible tubular member of the recanalization catheter with the guidewire maintained in position within the subintimal space;
wherein re-entering the lumen of the blood vessel includes deflecting a distal end of the flexible tubular member away from the elongate tubular member by inflating the balloon, wherein an exterior surface of the balloon presses against the flexible tubular member to deflect the flexible tubular member.
0 Assignments
0 Petitions
Accused Products
Abstract
A catheter for recanalizing a blood vessel having an occlusion therein via a subintimal pathway. The catheter includes a catheter shaft having an inflatable balloon mounted to the distal end portion of the catheter shaft. A flexible tubular member extends from the catheter shaft and along an exterior of the inflatable balloon. Inflation of the inflatable balloon deflects the flexible tubular member into a deflected configuration away from a longitudinal axis of the catheter shaft to effect re-entry into the true lumen distal of the occlusion.
-
Citations
19 Claims
-
1. A method of recanalizing a blood vessel having an occlusion therein, the method comprising:
-
advancing a guidewire through a lumen of a blood vessel to a location proximal of a proximal end of an occlusion; directing a distal end of the guidewire radially outward from the lumen of the blood vessel into a subintimal space between a first tissue layer and a second tissue layer of a wall of the blood vessel to a location distal of a distal end of the occlusion; advancing a recanalization catheter over the guidewire into the subintimal space to a position in the subintimal space in which a distal portion of the recanalization catheter is located distal of the distal end of the occlusion, the recanalization catheter including an elongate tubular member through which the guidewire is positioned, and a balloon surrounding the elongate tubular member and affixed to an exterior surface of the elongate tubular member; and re-entering the lumen of the blood vessel distal of the distal end of the occlusion with a flexible tubular member of the recanalization catheter with the guidewire maintained in position within the subintimal space; wherein re-entering the lumen of the blood vessel includes deflecting a distal end of the flexible tubular member away from the elongate tubular member by inflating the balloon, wherein an exterior surface of the balloon presses against the flexible tubular member to deflect the flexible tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of recanalizing a blood vessel having an occlusion therein, the method comprising:
-
advancing a guidewire through a lumen of a blood vessel to a location proximal of a proximal end of an occlusion; directing a distal end of the guidewire between a first tissue layer and a second tissue layer of a wall of the blood vessel to a location distal of a distal end of the occlusion; advancing a catheter over the guidewire, the catheter including a longitudinal axis, a balloon mounted on the catheter, a guidewire lumen extending through the balloon, and a flexible tubular member extending along an exterior of the balloon, wherein the guidewire is disposed within the guidewire lumen; inflating the balloon between the first tissue layer and the second tissue layer distal of the distal end of the occlusion, thereby deflecting a distal portion of the flexible tubular member into a deflected configuration extending away from the longitudinal axis; and re-entering the lumen of the blood vessel distal of the distal end of the occlusion with the flexible tubular member of the catheter in the deflected configuration. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A method of recanalizing a blood vessel having an occlusion therein, the method comprising:
-
advancing a guidewire through a lumen of a blood vessel to a location proximal of a proximal end of an occlusion; directing a distal end of the guidewire between a first tissue layer and a second tissue layer of a wall of the blood vessel to a location distal of a distal end of the occlusion; advancing a catheter over the guidewire, the catheter including a longitudinal axis, a flexible tubular member extending parallel to the longitudinal axis, and a balloon with inflatable wings; deflecting a distal portion of the flexible tubular member into a deflected configuration extending away from the longitudinal axis; and re-entering the lumen of the blood vessel distal of the distal end of the occlusion with the flexible tubular member of the catheter in the deflected configuration, wherein the wings of the balloon are folded around the flexible tubular member. - View Dependent Claims (19)
-
Specification