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Rotary handle stent delivery system and method

  • US 10,441,449 B1
  • Filed: 05/30/2018
  • Issued: 10/15/2019
  • Est. Priority Date: 05/30/2018
  • Status: Active Grant
First Claim
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1. A delivery device comprising:

  • a catheter having three concentric shafts including an inner core, an outer sheath over the inner core and an outer support shaft;

    a flexible timing belt having a plurality of belt teeth on a surface of the flexible timing belt;

    a timing belt link directly coupled to the flexible timing belt and coupled to the outer sheath such that movement of the timing belt link causes movement of the outer sheath;

    a barrel having barrel teeth corresponding to belt teeth for directly engaging the belt teeth;

    a thumbwheel assembly having two thumbwheels, wherein at least a portion of the thumbwheel assembly is integral with the barrel such that rotation of the thumbwheel assembly causes movement of the barrel such that the barrel teeth directly engage the belt teeth to cause movement of the flexible timing belt and the timing belt link, causing movement of the outer sheath; and

    a belt tensioner comprising a torsion spring, a tensioner arm and a tensioner pulley,wherein the barrel is between the two thumbwheels and the flexible timing belt engages the barrel between the two thumbwheels; and

    wherein the barrel and the two thumbwheels are rotatable about a common axis.

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