Anti-paravalvular leakage component for a transcatheter valve prosthesis

US9675451B2 · kind B2 · utility

Assignee

• Medtronic CV Luxembourg S.A.R.L. · LU

Inventors

• Kshitija Garde · Fullerton, US
• Joel Racchini · St. Louis Park, US
• Paul Rothstein · Elk River, US
• Jeffrey Sandstrom · Scandia, US

Key dates

• Filing date: Apr 1, 2014
• Grant date: Jun 13, 2017
• Expiry date: Apr 1, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0069
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A transcatheter valve prosthesis includes an expandable tubular stent, a prosthetic valve within the stent, and an anti-paravalvular leakage component coupled to and encircling the tubular stent. The anti-paravalvular leakage component includes a radially-compressible annular scaffold, which is a sinusoidal patterned ring of self-expanding material, and an impermeable membrane extending over the annular scaffold. The anti-paravalvular leakage component has an expanded configuration in which at least segments of the annular scaffold curve radially away from the tubular stent. Alternatively, the anti-paravalvular leakage component includes a plurality of self-expanding segments and an annular sealing element coupled to inner surfaces of the segments. The anti-paravalvular leakage component has an expanded configuration in which the segments curve radially away from the tubular stent and the annular sealing element is positioned between an outer surface of the tubular stent and inner surfaces of the segments. The segments may be orthogonal or oblique to the outer surface of the tubular stent.