Multilumen implant
The invention relates to a multilumen implant for the application in human and animal bodies, comprising a substantially tubular element ( 1 ) that divides into a proximal ( 2 ) and a distal section ( 3 ), and at least one stent ( 8 ) for the fixation of the proximal section in a target vessel, wherein the tubular element ( 1 ) is designed to branch in the distal section ( 3 ) into at least two lumens ( 4, 5 ).
1. Multilumen implant for the application in human and animal vascular systems/bodies, comprising a substantially tubular element ( 1 ) that divides into a proximal ( 2 ) and a distal section ( 3 ), and at least one stent ( 8 ) for the fixation of the proximal section ( 2 ) in a target vessel wherein
the tubular element ( 1 ) is designed to branch in the distal section ( 3 ) into at least two branches ( 6 , 7 ) with respective lumens ( 4 , 5 ); and
the proximal section ( 2 ) of the tubular element ( 1 ) is at least partially folded over upon the distal section ( 3 ) and the stent ( 8 ) is at least partially arranged inside a folding ( 9 ),
characterized in that the length of the folded proximal section ( 2 ) of the tubular element ( 1 ) corresponds to at least the length of the stent ( 8 ) and wherein the branches ( 6 , 7 ) together are at least partially arranged inside the stent ( 8 ).
2. Multilumen implant according to claim 1 , characterized in that the tubular element ( 1 ) branches in the distal section ( 3 ) into a main lumen ( 4 ) and a plurality of secondary lumens ( 5 ).
3. Multilumen implant according to claim 2 , characterized in that the secondary lumens ( 5 ) have a smaller caliber than the main lumen ( 4 ).
4. Multilumen implant according to claim 1 , characterized in that the stent ( 8 ) is inside of the proximal section ( 2 ) of the tubular element ( 1 ).
5. Multilumen implant according to claim 1 , characterized in that the stent ( 8 ) is contacting the surface of the proximal section ( 2 ) that was outside prior to folding of the tubular element ( 1 ), wherein the proximal section of the tubular element ( 1 ) has a first part that is outwardly guided distally at least partially around the proximal part of the stent ( 8 ).
6. Multilumen implant according to claim 1 , characterized in that the proximal section ( 2 ) of the tubular element ( 1 ) is longer than the stent ( 8 ) and in that the portion of the proximal section ( 2 ) projecting distally (d) beyond the stent ( 8 ) is folded inwardly over the stent ( 8 ).
7. Multilumen implant according to claim 1 , characterized in that the lumens ( 4 , 5 ) of the distal section ( 3 ) of the tubular element ( 1 ) taper in distal direction (d) ( 12 ).
8. Multilumen implant according to claim 1 , characterized in that the branches ( 6 , 7 ) have distally annular reinforcements ( 10 , 11 ).
9. Multilumen implant according to claim 1 , characterized in that the tubular element ( 1 ) is secured to the stent ( 8 ) by means of clamping, bonding/gluing, sewing or welding.
10. Multilumen implant according to claim 1 , characterized in that the tubular element ( 1 ) consists of ePTFE.
11. Multilumen implant according to claim 10 , characterized in that the tubular element ( 1 ) made of ePTFE is produced by electrospinning.
12. Multilumen implant according to claim 1 , characterized in that the stent ( 8 ) is a self-expanding stent.
13. Multilumen implant according to claim 1 , characterized in that the stent ( 8 ) is a balloon-expanding stent.
14. Kit comprising an implant according to claim 1 and a balloon catheter and/or a catheter for its implantation.
15. Kit according to claim 14 , moreover comprising stent grafts sufficient in number for the purpose of connecting respective distal branches ( 6 , 7 ) of the implant to the distal vessels.