Delivery system for a valve prosthesis

• US 10,383,727 B2
• Filed: 12/12/2017
• Issued: 08/20/2019
• Est. Priority Date: 10/23/2012
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Dwork, Joshua
• Primary Examiner(s): Matthews, William H
• Application Number:
  US15/838,717
• Publication Number:
  US 20180098846A1
• Time in Patent Office: 616 Days
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: Y10T 29/49405 Valve or choke making

Abstract

A heart valve prosthesis and delivery systems are provided for replacing a cardiac valve. The heart valve prosthesis includes a self-expanding frame includes a portion having a crimp that provides additional flexibility to the self-expanding frame in the collapsed configuration.

Claims

1. A delivery system for implanting a valve prosthesis, the delivery system comprising:

an inner shaft assembly including a shaft and a valve prosthesis retainer hub; and

a capsule slidably received over the inner shaft assembly, wherein a proximal portion and a distal portion of the capsule are configured to retain a valve prosthesis,

wherein the distal portion of the capsule has a circular cross-section and the proximal portion of the capsule has an ovaled cross-section, and

wherein the proximal portion is configured to bend in a single plane at the ovaled cross-section during delivery of a valve prosthesis.

2. The delivery system of claim 1, wherein the delivery system is configured to provide a delivery condition in which a valve prosthesis is retained over the shaft of the inner shaft assembly and retained within the capsule.

3. The delivery system of claim 2, wherein the delivery system is further configured to provide a deployment condition in which the capsule is proximally withdrawn over a valve prosthesis.

4. The delivery system of claim 1, wherein an outer diameter of the distal portion has the circular cross-section.

5. The delivery system of claim 1, wherein an outer diameter of the proximal portion has the ovaled cross-section.

6. The delivery system of claim 1, wherein an inner diameter of the distal portion has the circular cross-section.

7. The delivery system of claim 1, wherein an inner diameter of the proximal portion has the ovaled cross-section.

8. The delivery system of claim 1, wherein the proximal portion has an inner diameter having the ovaled cross-section and an outer diameter having a circular cross-section.

9. The delivery system of claim 8, wherein an outer diameter of the distal portion is the same as the outer diameter of the proximal portion.