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Method for locating a catheter tip using audio detection

  • US 8,753,292 B2
  • Filed: 10/03/2011
  • Issued: 06/17/2014
  • Est. Priority Date: 10/01/2010
  • Status: Active Grant
First Claim
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1. A method for locating a catheter tip within a human body comprising:

  • inserting a catheter into a hollow anatomical structure of the human body, wherein the catheter comprisesan elongated body having proximal end and a distal end terminating in a catheter tip at the distal end,a lumen having an opening disposed at the distal end, andan audio emitting element configured at a distal portion of the elongated body;

    advancing the catheter at least partially through the hollow anatomical structure;

    positioning a first audio sensor at a first site on or near the human body;

    emitting an audio beacon signal from the audio emitting element;

    detecting a first audio signal through the first audio sensor;

    transmitting the first audio signal to an audio signal processing unit;

    determining if the first audio signal corresponds to a target location of the catheter tip; and

    transmitting a notification signal to a user notification unit.

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