Prosthetic heart valve devices and methods of valve replacement

• US 9,827,090 B2
• Filed: 12/03/2012
• Issued: 11/28/2017
• Est. Priority Date: 04/23/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Hill, Alexander J., Clague, Cynthia, Eberhardt, Carol E., Menk, Ana, Capps, Mark J., Millwee, Billie, Shay, Janice Lynn, Taitague, Debra, Morrow, Joseph C., Redmond, Jerald
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): Miller, Cheryl
• Application Number:
  US13/692,577
• Publication Number:
  US 20130096673A1
• Time in Patent Office: 1,821 Days
• CPC Class Codes: A61F 2/24 Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
• 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 2/2415 Manufacturing methods
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2454 Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses
• CPC Class Codes: A61F 2/2463 Implants forming part of the valve leaflets
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• 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 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0045 Omega-shaped
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stented valve having at least one leaflet made of pericardium or other material having a relatively thin profile at the annulus. The leaflets are attached via chords to a stent frame, where the chords are positioned to mimic the native valve anatomy and functionality. In particular, the valves of one exemplary embodiment of the invention are sized to replace a mitral valve and therefore the chords are arranged to prevent prolapse of the leaflets into the atrium. The stented valve has a relatively short height at its annulus due to the positioning of the chords. In addition, the stented valve is capable of being crimped to a small enough size that it can be delivered to the implantation site via transcatheter delivery systems and methods.

Claims

1. A bioprosthetic leaflet for a stented valve configured for transcatheter delivery to a heart valve and deployment at the heart valve, the bioprosthetic leaflet comprising:

a peripheral edge configured for attachment to a stent frame of the stented valve in a radially compressed configuration and a radially expanded configuration;

a body portion from which a plurality of chords extend for attachment to the stent frame; and

a tab attached at a first fixed end of a first one of the plurality of chords,

wherein the tab is disposed on a first side of the body portion, wherein the first one of the plurality of chords extends from the tab at the first side of the body portion, extends through the body portion and to a second end of the first one of the plurality of chords, the second end being free and configured for attachment to the stent frame, and

wherein the first one of the plurality of chords passes through the body portion of the leaflet at two locations closely adjacent to each other.

2. A bioprosthetic leaflet for a stented valve configured for transcatheter delivery to a heart valve and deployment at the heart valve, the bioprosthetic leaflet comprising:

a peripheral edge configured for attachment to a stent frame of the stented valve in a radially compressed configuration and a radially expanded configuration;

a body portion from which a plurality of chords extend for attachment to the stent frame; and

a plurality of tabs, each tab attached to a respective one of the plurality of chords at a first end of thereof such that the first end is a fixed end,

wherein each tab is disposed on a first side of the body portion, each of the plurality of chords extends from a respective tab at the first side, extends through the body portion and to a second end that is a free end configured for attachment to the stent frame, and

wherein each of the plurality of chords passes through the body portion of the bioprosthetic leaflet at two locations closely adjacent to each other.