Implantable medical device and method for monitoring the insulation of an electrode line of such a medical device

摘要

An implantable medical device including at least one electrode line having an electrode pole, an electrode feed line, a counter electrode to the at least one electrode line, and an insulation sleeve. The insulation sleeve surrounds the electrode feed line and provides insulation between the electrode feed line and an electrolyte formed by bodily fluid. The electrode feed line and the electrode pole(s) include different materials, wherein the materials are different based on electrochemical series. The implantable medical device includes an insulation test unit having a DC voltage detector arranged between the electrode pole and the counter electrode, in order to detect an electrochemical voltage produced in the event of an insulation fault of the insulation sleeve due to defective contact between the electrolyte and the electrode feed line.

主权项

1. An implantable medical device comprising
at least one electrode line having an electrode; an electrode feed line; an insulation sleeve;
wherein said insulation sleeve is configured to
surround said electrode feed line, andprovide insulation between the electrode feed line and an electrolyte formed by bodily fluid; a counter electrode to the at least one electrode line; an insulation test unit comprising a direct current (DC) voltage detector arranged between the electrode and the counter electrode;
wherein the counter electrode is part of the insulation test unit,wherein the DC voltage detector is configured to measure a voltage between the electrode and the counter electrode,wherein the electrode feed line and the electrode comprise different materials, wherein said different materials differ based on electrochemical series, and,wherein the insulation test unit is configured to evaluate the measured voltage and detect an electrochemical voltage produced in the event of an insulation fault of the insulation sleeve due to defective contact between the electrolyte and the electrode feed line; and, a signaling device coupled to the DC voltage detector, wherein said signaling device is configured to
output a warning signal to display said insulation fault, and,display the electrochemical voltage.