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Delivery systems for prosthetic heart valve

  • US 9,795,477 B2
  • Filed: 04/22/2016
  • Issued: 10/24/2017
  • Est. Priority Date: 07/27/2011
  • Status: Active Grant
First Claim
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1. A delivery apparatus for implanting a radially compressible and expandable prosthetic heart valve in a native heart valve of the heart, the apparatus comprising:

  • an elongated shaft comprising a proximal end portion and a distal end portion;

    an inflatable balloon mounted on the distal end portion of the shaft; and

    a valve mounting member disposed on the distal end portion of the shaft within the balloon and configured to facilitate frictional engagement between the prosthetic heart valve and the balloon when the prosthetic heart valve is mounted in a radially compressed state on the balloon and surrounding the mounting member, the mounting member comprising at least one longitudinally extending fluid passageway through which an inflation fluid in the balloon can flow, the fluid passageway extending from a proximal end portion to a distal end portion of the mounting member, wherein inflation fluid outside of the mounting member can flow inwardly through the proximal end portion of the mounting member, into and through the fluid passageway, and then outwardly through the distal end of the mounting member into space within the balloon outside of the mounting member; and

    a tapered member mounted on the shaft inside the balloon adjacent the distal end portion of the mounting member, the tapered member configured to shield a distal end of a prosthetic heart valve from contacting leaflets of the native heart valve when the prosthetic heart valve is mounted on the balloon in a crimped state surrounding the mounting member, wherein the tapered member comprises a proximal opening and a radially extending slot that allow the inflation fluid from the distal end portion of the mounting member to flow through the proximal opening and the slot into the space within the balloon outside of the mounting member.

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