Implant, especially for the occlusion of bifurcation aneurysms
The invention relates to an implant ( 1 ) to be used for the occlusion of aneurysms in the region of vessel branches, in particular bifurcation aneurysms (A), with a mesh structure ( 3, 4 ), said implant comprising—from proximal to distal—sections (a) to (d) where (a) is a section tapering down proximally in which the mesh structure is brought together to form one or several coupling elements ( 10 ). (b) is a fixing section by means of which the implant can be supported on the to wall of a vessel, (c) is a permeable section for the region of the vessel bifurcation, and (d) is a distal section in which the implant is expanded in comparison to section (b) and which is intended for placement into the aneurysm (A), wherein a separation zone (T 1 , T 2 ) being arranged in the area of sections (c) or (d).
1. Implant ( 1 ) to be used for the occlusion of bifurcation aneurysms (A), with a mesh structure ( 3 , 4 ), said implant comprising—from proximal to distal—sections (a) to (d):
(a) is a section tapering down proximally in which the mesh structure is brought together to form one or several coupling elements ( 10 ),
(b) is a fixing section by means of which the implant can be supported on the wall of a vessel,
(c) is a permeable section for a region of vessel bifurcation, and
(d) is a distal section in which the implant is expanded in comparison to section (b) and which is intended for placement into the aneurysm (A),
wherein a separation zone (T 1 ) is arranged in between sections (c) and (d), the separation zone (T 1 ) being provided with separation elements consisting of filaments ( 6 ) extending substantially in a plane crosswise to the implant ( 1 ), and the distal section (d) consisting of a plurality of loops ( 12 ).
2. Implant according to claim 1 , characterized in that the distal section (d) is widened out in a trumpet- or basket-like shape through a braiding or by means of the loops ( 12 ).
3. Implant according to claim 1 , characterized in that it consists of shape-memory material.
4. Implant according to claim 1 , characterized in that the implant at least partially is cut out of a tube.
5. Implant according to claim 1 , characterized in that the proximal section (a) terminates in a coupling wire ( 10 ).
6. Implant according to claim 1 , characterized in that the distal section (d) is designed so as to be atraumatic, soft, and elastic.
7. Implant according to claim 1 , characterized in that the loops ( 12 ) are provided with eyelets ( 17 ) in the distal section (d).
8. Implant according to claim 1 , characterized in that the loops ( 12 ) in the distal section (d) are provided at the distal end with rounded spouts ( 18 ).
9. Implant according claim 1 , characterized in that it is of laterally closed tubular design.
10. Implant according to claim 1 , characterized in that the implant is partially or continuously slotted.
11. Implant according to claim 1 , characterized in that marker elements ( 8 ) are arranged in the distal section (d).
12. Implant according to claim 1 which is coupled to a guidewire ( 9 ).