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Minimally-invasive delivery systems

  • US 10,426,614 B2
  • Filed: 02/20/2018
  • Issued: 10/01/2019
  • Est. Priority Date: 08/01/2016
  • Status: Active Grant
First Claim
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1. Apparatus, comprising:

  • an implant;

    comprising (i) a frame that defines a central longitudinal lumen, and (ii) prosthetic valve leaflets disposed within the lumen,constrainable, by a constraining force, in a compressed state in which the lumen has a compressed internal diameter,having an expanded state into which the implant automatically transitions upon removal of the constraining force, and in which the lumen has an expanded internal diameter; and

    a tool, configured for transluminal delivery of the implant, the tool comprising;

    a shaft that extends longitudinally from a proximal part of the tool;

    a nosepiece fixed to the shaft, and arranged with respect to the implant such that the implant extends proximally away from the nosepiece and over the shaft; and

    a balloon, in fluid communication with the proximal part of the tool,wherein;

    the balloon has;

    a maximally-inflated state in which the balloon (i) has a widest part that has an inflated external diameter that is smaller than the expanded internal diameter, (ii) has a tapered portion that tapers longitudinally away from the widest part and from the nosepiece, and (iii) is dimensioned such that, while the implant is in its expanded state, the balloon is withdrawable by sliding of the balloon through the lumen, between the leaflets, and out of the lumen, anda deflated state in which the widest part has a deflated external diameter that is smaller than the inflated external diameter, andthe apparatus has a delivery state in which;

    the implant is in the compressed state,the balloon is in the deflated state, anda portion of the balloon is disposed within the lumen.

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