Patent ID: 8920356
Filing Date: 2014-12-30
Classification: A61M,F16L,G01N

Abstract:
1. A medical device configured to detect dislodgement of an access device during medical treatment of a patient, the medical device comprising: a blood circuit connecting the patient to an extracorporeal blood system, wherein the blood circuit includes a blood tubing set having a tube member connected to an access device, and wherein the access device is insertable within the patient such that blood flows between the patient and the extracorporeal blood system via the blood circuit; an electrode coupled to the blood circuit, and in fluid contact with the blood flowing in the blood circuit, the electrode made of a conductive polymer material including (a) a polymer matrix and a conductive component uniformly dispersed throughout the polymer matrix, wherein the polymer matrix is selected from the group consisting of acrylonitrile butadiene styrene, polycarbonate, acrylic, a cyclo olefin copolymer, a cyclo olefin copolymer blend, a metallocene-based polyethylene and mixtures thereof, or (b) a conductive polymer component selected from the group consisting of polyaniline, polypyrrole, polythiophene, polyethylenedioxthiophene, poly(p-phenylene vinylene) and mixtures thereof; and a controller in electrical communication with the electrode and configured to detect a change in an electrical value responsive to dislodgement of the access device as the blood flows between the patient and the extracorporeal blood system connected to the patient via the access device.