Transcatheter valve structure and methods for valve delivery

• US 9,226,826 B2
• Filed: 02/24/2010
• Issued: 01/05/2016
• Est. Priority Date: 02/24/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Rust, Matthew J.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): Mathew, Seema
• Application Number:
  US12/711,289
• Publication Number:
  US 20110208283A1
• Time in Patent Office: 2,141 Days
• Field of Search: 623/1.11, 623/1.24, 623 217- 218
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• 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 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

A valved stent including a stent structure having a generally tubular body portion with an interior area, a first end, a second end, and a longitudinal axis; a valve structure including a plurality of leaflets and positioned within the interior area of the stent structure; and an invertible structure extending from one of the first and second ends of the stent structure. The invertible structure can be rotatable relative to the end of the stent structure from which it extends.

Claims

1. A valved stent comprising:

a stent structure comprising a generally tubular body portion, an interior area, a first end, and a second end;

a valve comprising a plurality of leaflets and attached to the stent structure and disposed entirely within the interior area of the stent structure in a delivery configuration; and

an invertible structure having a first end coupled to the stent structure such that the invertible structure extends from the stent structure in the delivery configuration,

wherein the invertible structure is pivotable relative to the stent structure from the delivery configuration to an implanted configuration,

wherein the invertible structure extends beyond the stent structure in the delivery configuration, and

wherein the invertible structure folds inwardly towards the interior area of the stent structure and is positioned directly adjacent to an interior wall of the stent structure in the implanted configuration.

2. The valved stent of claim 1, wherein the invertible structure is pivotable relative to the first end of the stent structure, and

wherein the valve is positioned adjacent to the invertible structure.

3. The valved stent of claim 1, wherein the invertible structure further comprises a third configuration between the delivery configuration and implanted configuration, wherein the invertible structure is generally perpendicular to the stent structure when in the third configuration.

4. The valved stent of claim 1, further comprising at least one intermediate invertible structure pivotably attached to the stent structure within the interior area and between the first and second ends.

5. The valved stent of claim 1, further comprising a sealing skirt extending around at least a portion of the circumference of the tubular body at one of the first and second ends of the stent structure.

6. The valved stent of claim 1, wherein a length of the invertible structure is less than a length of the stent structure.

7. The valved stent of claim 1, wherein the invertible structure comprises at least one wire having multiple peaks and valleys positioned around a circumference of one of the first and second ends of the stent structure.

8. The valved stent of claim 1, wherein the invertible structure provides outward radial force against the interior area of the stent structure when the invertible structure is in the implanted configuration.

9. The valved stent of claim 1, wherein at least one of the stent structure and invertible structure comprise a shape memory material.

10. The valved stent of claim 1, wherein a second end of the invertible structure is configured to attach to a delivery system.

11. The valved stent of claim 1, further comprising an intermediate material attached to the stent structure, wherein the first end of the invertible structure is attached to the intermediate material.