Percutaneous mitral valve replacement device

  • US 10,441,416 B2
  • Filed: 04/20/2016
  • Issued: 10/15/2019
  • Est. Priority Date: 04/21/2015
  • Status: Active Grant
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First Claim
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1. A prosthetic valve assembly for replacing a native heart valve, comprising:

  • a radially expandable and compressible support structure, the support structure comprising an annular metal frame having a lumen extending from an inflow end to an outflow end, the support structure further comprising an annular sealing member extending radially inwardly into the lumen of the frame and having an inner peripheral edge spaced radially inwardly of the lumen of the frame and defining an orifice, wherein the support structure comprises a plurality of projections secured to the frame of the support structure and configured to penetrate tissue of native heart valve leaflets, wherein the projections have first portions and second portions, wherein the first portions extend radially outwardly from the frame of the support structure and axially toward the inflow end of the frame of the support structure, and wherein the second portions extend radially inwardly from the first portions and axially toward the outflow end of the frame of the support structure;

    a radially expandable and compressible valve component, the valve component comprising an annular metal frame with an inflow end and an outflow end and a valve structure supported inside of the frame for permitting flow of blood through the valve component in one direction and blocking the flow of blood in the opposite direction; and

    a flexible, tubular connector connected at one end to the support structure and at another end to the valve component, the connector permitting the valve assembly to transition from a first, axially-extended configuration wherein the valve component is outside of the support structure to a second, axially-contracted configuration wherein the valve component is disposed within the support structure,wherein the valve component is configured to expand within the orifice of the sealing member and engage the inner peripheral edge of the sealing member when radially expanded such that there is a gap void of material of the prosthetic valve assembly, wherein the gap extends radially between the frames of the support structure and the valve component at the inflow ends of the frames and extends axially toward the outflow ends of the frames, andwherein the inner peripheral edge of the sealing member is disposed axially within the support structure when the valve assembly is in the first, axially-extended configuration and when the valve assembly is in the second, axially-contracted configuration.

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