Methods for placing a stent in a branched vessel

摘要

Methods for placing a stent in a branched vessel include stretching the stent, aligning the stent within a target location at a branched vessel and releasing it for expansion at the target location.

主权项

1. A method of placing a stent at a target site within vasculature comprising a main vessel and at least one side branch vessel in fluid communication with the main vessel, the stent comprising a main lumen and a at least one side branch lumen, the method comprising:
creating an incision within the vasculature; advancing a sheath through the vasculature from the incision to a target site; partially deploying the stent from the sheath at the target site wherein the stent is in a reduced dimension coupled to an inner member inside the sheath and expands to an expanded dimension in the vessel, and further wherein the stent comprises the main lumen and at least one side branch lumen where the side branch lumen is coupled to a side branch catheter being separate from the inner member where partially deploying the stent comprises selectively tensioning the main lumen by axial movement of the the inner member that extends through the main lumen and independently selectively tensioning the side branch lumen by axial movement of the the side branch catheter that extends through the side branch lumen such that the main lumen can be repositioned in the respective main vessel by expanding and reducing a diameter of the main lumen; adjusting the side branch lumen relative to the main lumen using the side branch catheter to position the side branch lumen in the side branch vessel during partial deployment of the stent such that the side branch lumen can be repositioned in the side branch vessel by expanding and reducing a diameter of the side branch lumen; and fully deploying the main lumen in the main vessel by releasing the main lumen from the inner member and fully deploying the side branch lumen in the side branch vessel by releasing the side branch lumen from the side branch catheter.