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System to deliver a bodily implant

  • US 9,801,745 B2
  • Filed: 10/19/2011
  • Issued: 10/31/2017
  • Est. Priority Date: 10/21/2010
  • Status: Active Grant
First Claim
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1. A transluminal catheter system to deliver a bodily implant, the system comprising:

  • a proximal end with an implant release and a distal end that carries the implant radially confined within an inner sheath which, to release the implant, is pulled proximally from the proximal end of the system by the release to translate the inner sheath proximally relative to the implant to release the implant from its radial confinement, progressively, starting at the distal end of the implant; and

    a pre-tensioner which is actuable, prior to actuation of the implant release, to set the pre-tensioner in a tensioning disposition in which it imposes on at least a portion of the inner sheath a tension which pulls the portion in a proximal direction, thereby to reduce the force which the release must impose on the proximal end of the inner sheath to initiate said proximal translation of the inner sheath to begin said release of said implant, wherein the pre-tensioner takes the form of an outer sheath that covers said inner sheath, wherein said inner sheath has two long edges held together by stitches that run lengthwise along the implant, the pre-tensioner bonded to the inner sheath, or contiguous with the inner sheath around the circumference at the distal end of the inner sheath, and the pre-tensioner arranged to be put into end-wise tension, whilst the inner sheath is not in end-wise tension.

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