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IVC filter retrieval systems with multiple capture modes

  • US 9,949,816 B2
  • Filed: 12/10/2015
  • Issued: 04/24/2018
  • Est. Priority Date: 06/14/2013
  • Status: Active Grant
First Claim
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1. An apparatus for delivery or retrieval of a vascular medical device, the apparatus comprising:

  • an elongate shaft having an axis and a flexible distal extension, the flexible distal extension comprising a braid folded back at a first fold to form two layers;

    upon deployment, the two layers of the flexible distal extension are folded-hack inwardly at a second fold to form a funnel having a distal opening and a proximal opening, the proximal opening being formed by the first fold, the proximal opening configured to receive therethrough a portion of the medical device for securing the medical device;

    a tether disposed between the two layers of the braid and around a portion of the proximal opening; and

    an elongate sleeve having a lumen, wherein the elongate shaft and the flexible distal extension are within the lumen of the elongate sleeve.

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