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Methods for puncturing an expandable member to confirm advancement into a body passage

  • US 10,405,967 B1
  • Filed: 05/13/2019
  • Issued: 09/10/2019
  • Est. Priority Date: 03/08/2013
  • Status: Active Grant
First Claim
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1. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising:

  • expanding an expandable device in the second passage, the expandable device comprising a balloon;

    advancing a needle from a first catheter in the first passage out of the first passage and into the second passage to form a fistula between the first passage and the second passage, wherein advancing the needle comprises puncturing the expandable device;

    monitoring the needle puncturing the balloon to confirm advancement of the needle into the second passage; and

    advancing a guidewire from the first passage, through the needle, and into the expandable device, wherein collapsing of the expandable device closes around the guidewire to grip the guidewire in the second passage.

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