Patent ID: 8608792

Claim:
An endoprosthesis delivery system for implantation of an endoprosthesis at a bifurcation between a main vessel and at least two secondary vessels comprising: an endoprosthesis, comprising: first and second bodies, each comprising: a self-expanding and flexible structure, the flexible structure including a proximal region, an intermediate region, and a distal region, the distal region terminating at a free end, and the flexible structure defining a leg and an endoprosthesis support member, the endoprosthesis support member being adjacent to and spaced apart entirely from the leg, the leg terminating at the free end of the distal region, the second body being configured for positioning within the first body, the proximal region of the first body including a free end configured for positioning within the main vessel, the leg of the first body being configured for positioning within a first secondary vessel, the leg of the second body being configured for positioning within a second secondary vessel; and a delivery system, comprising: a catheter including a proximal end and a distal end, the distal end being adapted for insertion into a vessel, the first body being positioned within the distal end of the catheter in a reduced cross-sectional condition; a first tube, a second tube, and a third tube extending from the proximal end towards the distal end of the catheter; a first support member and a second support member connected to the first tube, the free end of the proximal region of the first body being releasably connected to the first support member and the free end of the distal region of the first body being releasably connected to the second support member; an outer sleeve movable along the catheter from a first position overlying the endoprosthesis to a second position spaced from the first body; a first inner sleeve connected to the second tube for selectively covering the free end of the proximal region of the first body; a first trigger mechanism coupled to the second tube for releasing the free end of the proximal region of the first body of the endoprosthesis from the first support member; a second inner sleeve connected to the third tube for selectively covering the free end of the distal region of the first body; and a second trigger mechanism coupled to the third tube to pull the second inner sleeve away from the second support member for releasing the free end of the distal region of the first body from the second support member, the first and second trigger mechanisms being movable in different directions along the catheter to release the free ends of the proximal and distal regions of the first body from the first and second support members; and wherein the first trigger mechanism is configured to be rotated relative to the catheter to push the first inner sleeve away from the first support member to release the free end of the proximal region of the first body from the first support member.