Kit to be implanted in a blood circulation conduit

• US 20080319538A1
• Filed: 06/06/2008
• Published: 12/25/2008
• Est. Priority Date: 06/08/2007
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: Perouse Medical Co.
• Inventors: Styrc, Mykolaj
• Granted Patent: US 7,785,364 B2
• Time in Patent Office: Days
• US Class Current: 623/1.26
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2250/006 modular

Abstract

This kit (11) comprises a tubular endoprosthesis (19) having an inner surface (57) which delimits a channel (58) with a longitudinal axis (Y-Y′). It comprises a prosthetic valve (17) to be implanted in the channel (58). The valve (17) comprises a supporting framework (25) having an outer surface (31) to be applied against the inner surface (57), and a flexible obturator (27) which is connected to the framework (25).

The endoprosthesis (19) comprises a stop (63, 65) for locking the supporting framework (25) in order to block the axial displacement of the outer surface (31) along the inner surface (57) in at least a first direction. The stop (63, 65) comprises at least one flexible connection (69) extending transversely in the channel (58) between two connection points (71), which are located on the inner surface (57) and are angularly spaced about the axis (Y-Y′).

Claims

1. Kit to be implanted in a blood circulation conduit, of the type comprising:

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

a prosthetic valve which can be moved relative to the tubular endoprosthesis in order to be implanted in the channel, the prosthetic valve comprising;

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

a flexible obturator which is connected to the framework, and is deformable between a closure position in which it is extended transversely, and a release position in which it is contracted transversely due to the flow circulating in the channel;

the endoprosthesis comprising at least one stop for locking the prosthetic valve in the channel in order to block axial displacement of the outer surface along the inner surface in at least a first direction;

wherein the stop comprises at least one flexible connection extending transversely across the channel between two connection points located on the inner surface and spaced angularly about the longitudinal axis.

2. Kit according to claim 1, wherein the tubular endoprosthesis can be deployed between a compressed state and a dilated state, the or each flexible connection being deployable in conjunction with the endoprosthesis between a slack configuration when the endoprosthesis is in the compressed state and a tight position across the channel when the endoprosthesis is in its dilated state.

3. Kit according to claim 1, wherein the or each flexible connection is free relative to the inner surface between its connection points.

4. Kit according to claim 1, wherein the connection points of the or each flexible connection extend substantially in the same plane perpendicular to the longitudinal axis.

5. Kit according to claim 1, wherein the or each stop comprises at least two flexible connections, each extending between two connection points, the connection points forming the vertices of a polygon.

6. Kit according to claim 1, wherein the endoprosthesis comprises a proximal stop and a distal stop which are at a distance from one another in the axial direction, each stop comprising at least a flexible connection extending transversely across the channel between two connection points which are located on the inner surface and are spaced angularly about the longitudinal axis.

7. Kit according to claim 6, wherein the or each connection of at least one stop delimits a central passage in the channel, the supporting framework of the prosthetic valve, in its folded fitting position, being able to be inserted between the distal stop and the proximal stop through the central passage.

8. Kit according to claim 6, wherein the axial distance separating the proximal stop and the distal stop is greater than or substantially equal to the length of the outer surface placed in contact with the inner surface, taken along the longitudinal axis.

9. Kit according to claim 1, wherein the or each flexible connection is formed by a thread.