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CATHETER SHAFT AND ASSOCIATED DEVICES, SYSTEMS, AND METHODS

  • US 20170072165A1
  • Filed: 09/11/2015
  • Published: 03/16/2017
  • Est. Priority Date: 09/11/2015
  • Status: Abandoned Application
First Claim
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1. A catheter, comprising:

  • an elongated shaft having a proximal portion and a distal portion, wherein an inner surface of the elongated shaft defines a lumen that extends distally from the proximal portion to an opening at a distal terminus of the distal portion;

    wherein the distal portion includes—

    an inner polymer structure having a first portion and a second portion positioned distal of the first portion along the length of the inner polymer structure, wherein the first portion has a first stiffness and the second portion has a second stiffness less than the first stiffness;

    an outer polymer structure disposed around the inner polymer structure; and

    a coil wound around the inner polymer structure and disposed within the outer polymer structure.

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