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Mitral valve loading tool

  • US 10,531,954 B2
  • Filed: 03/17/2016
  • Issued: 01/14/2020
  • Est. Priority Date: 03/20/2015
  • Status: Expired due to Fees
First Claim
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1. A medical combination, comprising:

  • a delivery device for a collapsible prosthetic heart valve, the delivery device including;

    an inner sheath elongated along a longitudinal axis;

    an outer sheath at least partially surrounding the inner sheath and slidable relative to the inner sheath along the longitudinal axis, the outer sheath having a first diameter; and

    a retaining element affixed to the inner sheath, the retaining element having a plurality of recesses distributed circumferentially around its perimeter, each recess being configured to accept a corresponding retainer of the prosthetic heart valve, the perimeter of the retaining element having a second diameter; and

    a loading tool for loading the collapsible prosthetic heart valve into the delivery device, the loading tool including;

    a body extending in a longitudinal direction between a proximal end and a distal end, the body including a lumen extending between the proximal end and the distal end, the body lumen having a third diameter greater than the first diameter so that the outer sheath fits within the body lumen when the loading tool is in an assembled condition around the delivery device;

    an extension on the distal end of the body, the extension having a free end and a lumen coaxial with the body lumen, the extension lumen having a fourth diameter less than the third diameter so as to define a shelf surface between the proximal end of the body and the free end of the extension, the fourth diameter being greater than the second diameter so that the retaining element fits within the extension lumen when the loading tool is the assembled condition around the delivery device, the shelf surface facing in a direction toward the proximal end of the body and having a width that is approximately equal to a wall thickness of the outer sheath; and

    a slot extending through the extension from the free end toward the distal end of the body.

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