Patent ID: 9033920
Filing Date: 2015-05-19
Classification: A61M

Abstract:
1. A method for determining status of an implanted catheter, the catheter having a delivery region intended to be positioned in a target location of a patient, the delivery region being in communication with a lumen of the catheter, the method comprising: measuring pressure within the lumen of the catheter; developing a physiological pressure modulation profile based on the measured pressure; infusing or withdrawing a bolus of fluid into or from the lumen of the catheter; measuring pressure within the lumen of the catheter created by the bolus; developing a bolus pressure modulation profile based on the measured bolus pressure; and determining the status of the catheter by comparing the developed bolus pressure modulation profile to a predetermined bolus pressure profile and by comparing the developed physiological pressure modulation profile to a predetermined physiological pressure profile of the target location.