Stent-Valves For Valve Replacement and Associated Methods and Systems for Surgery

• US 20140039614A1
• Filed: 04/12/2013
• Published: 02/06/2014
• Est. Priority Date: 08/21/2007
• Status: Active Grant

• Current Assignee: Boston Scientific Medical Device Limited (Boston Scientific Corporation)
• Original Assignee: Symetis SA (Boston Scientific Corporation)
• Inventors: Delaloye, Stephane, Hefti, Jean-Luc, Delaloye, Serge
• Granted Patent: US 10,716,662 B2
• Time in Patent Office: Days
• US Class Current: 623/2.36
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• 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 2250/0018 differing in elasticity, stiffness or compressibility

Abstract

Stent-valves (e.g., single-stent-valves and double-stent-valves) and associated methods and systems for their delivery via minimally-invasive surgery are provided.

Claims

1. A replacement valve for use within a human body comprising:

a valve component; and

a stent component for housing the valve component, a proximal portion of the stent component comprising a first strut and a second strut with ends located at different positions along a longitudinal axis of the stent component, wherein the first strut and the second strut provide an axial resistance for anchoring the stent at an implantation site.

2. The replacement valve of claim 1, wherein the stent component comprises multiple installations of said first strut and said second strut located horizontally along the perimeter of the stent component, and wherein said second strut is located within said first strut.

3. The replacement valve of claim 1, wherein the end of the second strut is connected to the end of the first strut.

4. A replacement valve for use within a human body comprising:

a valve component; and

a stent component for housing the valve component, the stent component comprising a plurality of locking elements protruding outwardly from an outer surface of the stent component, each locking element including a first end adjacent to the outer surface of the stent component and a second end spaced apart from the outer surface of the stent component, wherein the second end of at least a first locking element is located at a different position along a longitudinal axis of the stent component than the second end of at least a second locking element.

5. The replacement valve of claim 4, wherein the first locking element and the second locking element have substantially the same lengths and wherein the first ends of the first and second locking elements are positioned at multiple, different levels along the longitudinal axis of the stent component.

6. The replacement valve of claim 4, wherein the first locking element and the second locking element have different lengths and wherein the first ends of the first and second locking elements are positioned at substantially the same level along the longitudinal axis of the stent component.

7. A replacement valve for use within a human body comprising:

a valve component; and

a stent component for housing the valve component, the stent component comprising at least a first commissural post and a second commissural adjacent to a body of the stent component, wherein the first commissural post comprises an external contour and the second commissural post comprises an external contour that collectively form a generally concave shape, and wherein at least one of the external contours slopes inwardly toward the center of the corresponding commissural post in the direction of the body of the stent component.

8. A replacement valve for use within a human body comprising:

a valve component comprising an outer surface substantially entirely covered with fabric, the valve component comprising at least one suture along the trimmed aortic sinus and at least one suture along the perimeter of the inflow margin, the fabric comprising a skirt that extends below the valve component; and

a stent component for housing the valve component,

wherein a free edge of the skirt is folded over a bottom portion of the stent component and sutured to the stent component.

9. The replacement valve of claim 8, Wherein substantially all the fibers of the fabric are oriented about +/−

45 degrees with respect to a longitudinal axis of the valve component.

10. The replacement valve of claim 8, wherein the stent component comprises at least one Y-shaped structure fixed to the valve component by one or more sutures forming a corresponding Y-shaped configuration.

11. The replacement valve of claim 8, wherein the stent component comprises an annular groove and wherein the free edge of the skirt is positioned within the annular groove.

12. The replacement valve of claim 11, wherein the free edge of the skirt comprises at least one cut oriented in the direction of a longitudinal axis of the stent component.

13. The replacement valve of claim 11, wherein the annular groove is at least partially filled with a fibrous, foam, or other biocompatible material.

14-20. -20. (canceled)