Kit to be implanted in a blood circulation conduit

1. A kit to be implanted in a blood circulation conduit, said kit comprising:

a tubular endoprosthesis having an inner surface configured to delimit a channel with a longitudinal axis; and

a prosthetic valve to be implanted in said tubular endoprosthesis and movable relative to said tubular endoprosthesis, said prosthetic valve including:

a supporting framework having an outer surface to be applied against said inner surface of said endoprosthesis, said framework being radially deformable from a folded fitting position to a deployed implantation position; and

a flexible obturator connected to said framework, said obturator being deformable between a closure position in which said obturator extends transversely, and a release position in which said obturator contracts transversely due to a flow circulating through said channel;

wherein said endoprosthesis includes a stop for locking said prosthetic valve in said channel to prevent axial displacement of said outer surface of said framework along said inner surface of said endoprosthesis in at least a first direction, said stop including a flexible connection extending transversely across said channel between two connection points located on said inner surface of said endoprosthesis and spaced angularly about said longitudinal axis of said channel.

2. The kit of claim 1 , wherein said endoprosthesis is deployable between a compressed state and a dilated state, said flexible connection being deployable in conjunction with said endoprosthesis between a slack configuration when said endoprosthesis is in the compressed state and a tight configuration transversely across said channel when said endoprosthesis is in the dilated state.

3. The kit of claim 1 , wherein an entire length of said flexible connection located between said two connection points is free relative to said inner surface of said endoprosthesis.

4. The kit of claim 1 , wherein said two connection points of said flexible connection are located substantially within a plane perpendicular to said longitudinal axis of said channel.

5. The kit of claim 1 , wherein said flexible connection comprises a first flexible connection, said stop further including a second flexible connection, each of said first flexible connection and said second flexible connection extending between two respective connection points, said connection points of said first flexible connection and said second flexible connection being arranged to form vertices of a polygon.

6. The kit of claim 5 , wherein said connection points of said first flexible connection and said second flexible connection are all located substantially within a plane perpendicular to said longitudinal axis of said channel.

7. The kit of claim 1 , wherein said stop comprises a proximal stop, said endoprosthesis further including a distal stop separated from said proximal stop along said longitudinal axis of said channel, said distal stop including a flexible connection extending transversely across said channel between two connection points located on said inner surface of said endoprosthesis and spaced angularly about said longitudinal axis of said channel.

8. The kit of claim 7 , wherein said flexible connection of each of said proximal stop and said distal stop delimits a central passage in said channel, said supporting framework of said prosthetic valve being configured to be inserted between said distal stop and said proximal stop through said central passage when said supporting framework is in the folded fitting position.

9. The kit of claim 7 , wherein an axial distance along said longitudinal axis separating said proximal stop and said distal stop is at least as large as an axial length of said outer surface of said supporting framework to be applied against said inner surface of said endoprosthesis.

10. The kit of claim 1 , wherein said flexible connection is formed of a thread.

11. The kit of claim 1 , wherein said flexible connection comprises a first flexible connection, said stop further including a second flexible connection and a third flexible connection, each of said first flexible connection, said second flexible connection, and said third flexible connection extending between two respective connection points, said connection points of said first flexible connection, said second flexible connection, and said third flexible connection being arranged to form vertices of a triangle located substantially within a plane perpendicular to said longitudinal axis of said channel.

12. The kit of claim 1 , wherein said flexible connection comprises a first flexible connection, said stop further including a second flexible connection, a third flexible connection, and a fourth flexible connection, each of said first flexible connection, said second flexible connection, said third flexible connection, and said fourth flexible connection extending between two respective connection points, said connection points of said first flexible connection, said second flexible connection, said third flexible connection, and said fourth flexible connection being arranged to form vertices of a four-sided polygon located substantially within a plane perpendicular to said longitudinal axis of said channel.

13. The kit of claim 1 , wherein said flexible connection comprises a first flexible connection, said stop further including a second flexible connection, each of said first flexible connection and said second flexible connection extending between two respective connection points so that said first flexible connection and said second flexible connection are parallel.