Kit Which Is Intended to Be Implanted in a Blood Vessel, and Associated Tubular Endoprosthesis

• US 20090012600A1
• Filed: 03/24/2006
• Published: 01/08/2009
• Est. Priority Date: 04/05/2005
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: Cormove
• Inventors: Perouse, Eric, Styrc, Mikolaj Witold
• Granted Patent: US 9,408,693 B2
• Time in Patent Office: Days
• US Class Current: 623/1.240
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

The invention concerns a kit (11) comprising a tubular endoprosthesis (19) having an inner surface (57) delimiting a channel (58) with longitudinal axis (X-X′). It comprises a prosthetic valve (17) designed to be implanted in the channel (58). The valve (17) comprises a supporting frame (25) having an outer surface (35A, 35B) designed to be pressed against the inner surface (57), and a flexible cover (39) connected to the frame (25). The inner surface (57) has at least two segments (65, 67) with variable cross-section along the longitudinal axis (X-X′). The segments (65, 67) form respectively a proximal stop (71) and a distal stop (73) to lock the axial displacement of the outer surface (35A, 35B) along the inner surface (57) along two opposite directions.

Claims

1. Kit which is intended to be implanted in a blood vessel, of the type comprising:

a tubular endoprosthesis which has an inner surface which delimits a channel having a longitudinal axis; and

a prosthetic valve which is intended to be implanted in the channel, the valve comprising;

a carrier reinforcement which has an outer surface which is intended to be pressed against the inner surface of the endoprosthesis, the reinforcement being able to be deformed radially from a folded position for placement to a deployed position for implantation;

a flexible shutter which is connected to the reinforcement and which can be deformed between a blocking position in which it is extended transversely and a release position in which it is contracted transversely under the action of the flow moving in the channel;

characterised in that at least one of the inner and outer surfaces has at least two portions having a variable cross-section along the longitudinal axis, the portions forming a proximal stop and a distal stop, respectively, to block the axial displacement of the outer surface along the inner surface in two opposing directions.

2. Kit according to claim 1, characterised in that the two portions having a variable cross-section over one of the surfaces form at least a fixing portion which protrudes radially, the fixing portion which protrudes radially being intended to be received in a corresponding hole which is provided in the other one of the surfaces.

3. Kit according to claim 2, characterised in that the other one of the surfaces has at least two portions having a variable cross-section along the longitudinal axis, the portions delimiting, in the other one of the surfaces, a housing for receiving the or each protruding portion, having a shape which complements that of the or each protruding portion.

4. Kit according to either claim 2, characterised in that one of the surfaces delimits at least two protruding portions which are spaced-apart along the longitudinal axis.

5. Kit according to claim 2, characterised in that the or each protruding portion delimits two angular stop surfaces in order to block the rotation of the outer surface along the inner surface around the longitudinal axis.

6. Kit according to claim 5, characterised in that one of the surfaces delimits at least two protruding portions which are spaced-apart in an angular manner around the longitudinal axis.

7. Kit according to claim 1, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

8. Kit according to claim 7, characterised in that the two portions having a variable cross-section are delimited by two annular contractions which protrude in the channel.

9. Kit according to claim 1, characterised in that the portions having a variable cross-section are radio-opaque.

12. Kit according to claim 3, characterised in that the or each protruding portion delimits two angular stop surfaces in order to block the rotation of the outer surface along the inner surface around the longitudinal axis.

13. Kit according to claim 4, characterised in that the or each protruding portion delimits two angular stop surfaces in order to block the rotation of the outer surface along the inner surface around the longitudinal axis.

14. Kit according to claim 2, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

15. Kit according to claim 3, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

16. Kit according to claim 4, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

17. Kit according to claim 5, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

18. Kit according to claim 6, characterised in that the inner surface has two portions which have a variable cross-section and which are connected to each other by means of a support portion which is radially recessed, the support portion having a length which is substantially equal to the length of the outer surface provided on the carrier reinforcement and delimiting, with the portions having a variable cross-section, a housing for receiving the carrier reinforcement.

19. Kit according to claim 2, characterised in that the portions having a variable cross-section are radio-opaque.

20. Kit according to claim 3, characterised in that the portions having a variable cross-section are radio-opaque.

10. Tubular endoprosthesis, of the type having an inner surface which delimits a channel having a longitudinal axis, characterised in that the inner surface has at least two portions which have a variable cross-section along the longitudinal axis, the portions forming a proximal stop and a distal stop, respectively, to block the axial displacement in two opposing directions of an outer surface provided on a prosthetic valve which is intended to be implanted on the inner surface.

11. Prosthetic valve which is intended to be implanted in a channel of a tubular endoprosthesis, comprising:

a carrier reinforcement which has an outer surface which is intended to be pressed against the inner surface of the endoprosthesis, the reinforcement being able to be radially deformed from a folded position for placement to a deployed position for implantation;

a flexible shutter which is connected to the reinforcement and which can be deformed between a blocking position in which it is extended transversely and a release position in which it is contracted transversely under the action of the flow moving in the channel;

characterised in that the outer surface of the carrier reinforcement has at least two portions having a variable cross-section along the longitudinal axis, the portions forming a proximal stop and a distal stop, respectively, to block the axial displacement of the valve relative to the tubular endoprosthesis.