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Prosthetic heart valve and endoprosthesis comprising a prosthetic heart valve and a stent

  • US 9,744,031 B2
  • Filed: 05/24/2011
  • Issued: 08/29/2017
  • Est. Priority Date: 05/25/2010
  • Status: Active Grant
First Claim
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1. An endoprosthesis comprising:

  • a stent; and

    a prosthetic heart valve coupled to the stent, the prosthetic heart valve comprising;

    (a) a tissue assembly comprising at least two separate, monolithic pieces coupled together, each piece comprising a natural tissue material or a synthetic material, wherein each piece includes;

    (i) two sleeves each having a free end;

    (ii) a leaflet having a first opened position for opening the heart chamber and a second closed position for closing the heart chamber, the leaflet being between the two sleeves and able to move between the first and second positions in response to a blood flow through the heart;

    (iii) a skirt portion proximal to the leaflet and the sleeves, wherein the skirt portion mounts the prosthetic heart valve to the stent; and

    (iv) a bendable transition area forming a junction between the leaflet and the skirt portion, the bendable transition area being essentially U-shaped; and

    (b) at least one reinforcement element coupled to the tissue assembly and attached to a commissure portion of the stent;

    wherein the at least one reinforcement element is attached to two adjacent monolithic pieces of the tissue assembly along the free end of a sleeve of each adjacent monolithic piece, and wherein the at least one reinforcement element covers an entire outermost surface of the sleeves to prevent the sleeves from contacting the commissure portion of the stent; and

    wherein a proximal-most end of the prosthetic heart valve has a zigzag shape.

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