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Atraumatic interface in an implant delivery device

  • US 10,398,550 B2
  • Filed: 09/10/2014
  • Issued: 09/03/2019
  • Est. Priority Date: 09/12/2013
  • Status: Active Grant
First Claim
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1. A delivery device for a collapsible prosthetic heart valve, the delivery device comprising:

  • an operating handle having a housing and a carriage selectively fixed or movable relative to the housing; and

    a catheter assembly, including;

    an inner shaft around which a compartment is defined, the inner shaft being operatively connected to the housing, the compartment being adapted to receive the valve in an assembled condition;

    an outer shaft surrounding at least a portion of the inner shaft, the outer shaft being fixedly connected to the carriage and movable relative to the inner shaft and the housing, the outer shaft having a compressed length and an extended length greater than the compressed length along an axis of elongation of the outer shaft;

    a distal sheath fixedly connected to the outer shaft, the distal sheath being movable between a closed condition covering the compartment and an open condition uncovering the compartment for deployment of the valve; and

    a mechanism configured to apply a distal force to the outer shaft while the carriage is fixed relative to the housing to stretch the outer shaft from the compressed length to the extended length.

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