Telescopic side port catheter device with imaging system and method for accessing side branch occlusions
First Claim
1. A method of crossing an occlusion within a vessel, the method comprising:
- positioning a catheter within a vessel of a patient, the catheter including;
an imaging element,a steering assembly comprising a first tube and a second tube, wherein the first tube is located within the second tube and slides with respect to the second tube, wherein the first and second tubes are telescopically movable with respect to each other,an occlusion crossing wire extending out of an opening in the first tube through a side port in the second tube that provides an exit opening in a side of the catheter,a stabilizing element that provides stability to the catheter located either proximal to or distal to the exit opening, anda visual marker element positioned on the catheter and aligned with the exit opening in the catheter, the visual marker element configured to be within a field of view captured by the imaging element;
advancing the imaging element through a main vessel to a position adjacent an occlusion of a side vessel;
imaging the occlusion along with a portion of the side vessel;
aligning the exit opening in the side of the catheter with the occlusion based on a visual indication of an orientation of the exit opening with respect to the imaged occlusion and the side vessel provided by the visual marker element;
changing an orientation of the crossing wire with the steering assembly by moving the second tube telescopically with respect to the first tube, thereby to cause the crossing wire to change its angle with respect to the catheter; and
advancing the crossing wire through the opening of the first tube and the exit opening in the side of the catheter and into the occlusion.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device and method are provided for accessing a side branch in an artery utilizing an on-board imaging device. The device includes a catheter having a sidewall, an internal lumen, and a side port formed through the sidewall. A perforating guide wire has a proximal portion within the internal lumen and a distal portion arranged to be movable out of the side port. The guide wire can be delivered through the side port to a side branch artery when the catheter is deployed to a location with the side port aligned with the side branch artery. In one embodiment, the catheter includes an on-board imaging system disposed adjacent the side opening. The imaging system images tissue adjacent the side opening to assist with alignment of the guide wire to enter a side branch and/or cross an occlusion within the side branch.
-
Citations
15 Claims
-
1. A method of crossing an occlusion within a vessel, the method comprising:
-
positioning a catheter within a vessel of a patient, the catheter including; an imaging element, a steering assembly comprising a first tube and a second tube, wherein the first tube is located within the second tube and slides with respect to the second tube, wherein the first and second tubes are telescopically movable with respect to each other, an occlusion crossing wire extending out of an opening in the first tube through a side port in the second tube that provides an exit opening in a side of the catheter, a stabilizing element that provides stability to the catheter located either proximal to or distal to the exit opening, and a visual marker element positioned on the catheter and aligned with the exit opening in the catheter, the visual marker element configured to be within a field of view captured by the imaging element; advancing the imaging element through a main vessel to a position adjacent an occlusion of a side vessel; imaging the occlusion along with a portion of the side vessel; aligning the exit opening in the side of the catheter with the occlusion based on a visual indication of an orientation of the exit opening with respect to the imaged occlusion and the side vessel provided by the visual marker element; changing an orientation of the crossing wire with the steering assembly by moving the second tube telescopically with respect to the first tube, thereby to cause the crossing wire to change its angle with respect to the catheter; and advancing the crossing wire through the opening of the first tube and the exit opening in the side of the catheter and into the occlusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A vessel occlusion crossing system comprising:
-
a catheter body having a lumen and a side port that provides an exit opening in a side of the catheter body; an imaging element disposed on a distal portion of the catheter; a crossing wire; a steering assembly comprising a first tube slidably located within the lumen of the catheter body, wherein the first tube is telescopically movable within the lumen of the catheter body, wherein the crossing wire is slidably disposed within the first tube, and wherein the crossing wires are configured to extend to the side port in the side of the catheter body, the steering assembly configured to change a direction of the crossing wire after exit through the side port by moving the first tube telescopically with respect to the lumen of the catheter body thereby to cause the crossing wire to change its angle with respect to the catheter body; a stabilizing element that provides stability to the catheter located either proximal to or distal to the exit opening; and a visual marker element positioned on the catheter and aligned with the exit opening in the catheter, the visual marker element configured to be within a field of view captured by the imaging element and further configured to provide a visual indication of the orientation of the exit opening of the catheter with respect to an imaged vessel occlusion. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
Specification