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Transcatheter prosthetic heart valve delivery device with biased release features

  • US 8,852,271 B2
  • Filed: 04/27/2011
  • Issued: 10/07/2014
  • Est. Priority Date: 04/27/2010
  • Status: Active Grant
First Claim
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1. A delivery device for percutaneously deploying a stented prosthetic heart valve including a stent frame to which a valve structure is attached, the device comprising:

  • a delivery sheath assembly terminating at a distal end and defining a lumen;

    an inner shaft slidably disposed within the lumen; and

    a capture assembly for selectively coupling a prosthetic heart valve relative to the inner shaft, the capture assembly including;

    a spindle attached to the inner shaft, the spindle defining a plurality of circumferentially spaced capture slots,a first biasing member disposed within a first one of the plurality of capture slots and configured to self-transition from a deflected condition to a normal condition, wherein a radial projection of the biasing member relative to a centerline of the inner shaft is greater in the normal condition than in the deflected condition;

    wherein the delivery device is configured to provide;

    a delivery state in which the delivery sheath assembly is configured to retain a stented prosthetic heart valve over the inner shaft via the first capture slot, including a portion of the prosthetic heart valve engageable within the first capture slot and the first biasing member forced to the deflected condition,a deployment state in which the distal end of the delivery sheath assembly is withdrawn from the first capture slot, including the first biasing member self-transitioning toward the normal condition to exteriorly close at least a portion of the first capture slot.

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