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DEVICES AND METHODS FOR DETECTING CATHETER COMPLICATIONS

  • US 20110257593A1
  • Filed: 06/27/2011
  • Published: 10/20/2011
  • Est. Priority Date: 03/30/2007
  • Status: Active Grant
First Claim
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1. A method for determining status of an implanted catheter, the method comprising:

  • acquiring raw pressure data from a pressure sensor of an implantable infusion device, wherein the pressure sensor is in communication with a lumen of the catheter configured to be coupled to the infusion device, wherein the catheter has a delivery region intended to be positioned in a fluid-filled target location of a patient, the delivery region being in communication with the lumen;

    filtering the raw pressure data to remove the DC component, leaving the AC component within a relevant physiological frequency range;

    rectifying the AC component to produce a rectified pressure signal;

    calculating a mean magnitude of the integrated rectified signal;

    determining whether the mean magnitude is below a predetermined threshold, wherein if the mean magnitude is below the threshold, the catheter is determined to be in a state other than a normal state.

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