Valve assembly for crimp profile

• US 10,470,880 B2
• Filed: 10/14/2015
• Issued: 11/12/2019
• Est. Priority Date: 06/29/2012
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Inventors: Braido, Peter N., Coyle, Daniel, Johnson, Mary, Schraut, Julia A., Buesseler, Ryan, Daly, Jacob John
• Primary Examiner(s): Wilson, Lee D
• Application Number:
  US14/882,669
• Publication Number:
  US 20160030172A1
• Time in Patent Office: 1,490 Days
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2415 Manufacturing methods
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: Y10T 29/49405 Valve or choke making
• CPC Class Codes: Y10T 29/49925 Inward deformation of aperture or hollow body wall
• CPC Class Codes: Y10T 29/49936 Surface interlocking
• CPC Class Codes: Y10T 29/4994 Radially expanding internal tube

Abstract

A method of assembling a prosthetic heart valve includes providing a collapsible and expandable stent having an annulus section and an aortic section. The annulus section has a first diameter in a relaxed condition and a second diameter less than the first diameter in a collapsed condition. A constraint is applied to the stent to constrain the annulus section to a predetermined diameter between the first and second diameters. Applying a cuff and/or a plurality of leaflets to the stent in the constrained condition enables less material to be used. The resultant prosthetic valve is therefore able to be collapsed to a smaller diameter for introduction into a patient.

Claims

1. A constraint for assembling a prosthetic heart valve including a collapsible and expandable stent having an annulus section, the annulus section having a first annulus diameter in a relaxed condition and a second annulus diameter less than the first annulus diameter in a collapsed condition, the constraint comprising:

a cylindrical body having a proximal opening, a distal opening, and a lumen defined between the proximal opening and the distal opening and sized to constrain the annulus section to a predetermined annulus diameter between the first annulus diameter and the second annulus diameter, the body further comprising at least one window configured and arranged to permit assembly of the prosthetic heart valve therethrough.

2. The constraint of claim 1, wherein the constraint further comprises a cone portion at the distal opening.

3. The constraint of claim 1, wherein the constraint comprises three rings.