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Locking loop catheter

  • US 10,456,565 B2
  • Filed: 01/06/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 01/13/2015
  • Status: Active Grant
First Claim
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1. A catheter having a proximal end and a distal end comprising:

  • a tube having a proximal end and a distal end and defining a first lumen and a second lumen extending therebetween, wherein the first lumen and the second lumen extend side-by-side along a length of the second lumen;

    an exit port defined by the tube and extending through the first lumen of the tube adjacent the distal end of the tube;

    an entry port extending through the second lumen of the tube and creating fluid communication between an exterior of the tube and the second lumen of the tube; and

    a filament extending within the first lumen of the tube and extending out of the exit port such that a portion of the filament is exposed to the exterior of the tube and further extending into the second lumen through the entry port;

    wherein the filament includes a free end disposed at the proximal end, the free end being adjustable proximally and distally, wherein proximal retraction of the filament puts the filament in tension and creates a looped end portion of the tube where the exit port and entry port are urged toward each other, and releasing the filament from its proximal retraction allows the tube to return to a non-looped shape and the exit and entry ports to move away from each other;

    wherein the filament is coupled to the tube to prevent the filament and tube from being separated in response to retraction of the tube.

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