Patent ID: 8298152
Filing Date: 2012-10-30
Classification: A61M

Abstract:
1. A monitoring device for monitoring an access to a patient, comprising: a first tubular conduit comprising a first patient connector for withdrawing a fluid; a second tubular conduit comprising a second patient connector for returning the fluid; an AC voltage signal generator comprising a signal output with a first output connector and second output connector; a capacitive injection device for capacitive injection of the AC voltage signal at a first location of one of the first tubular conduit or the second tubular conduit; a capacitive output device for capacitive output of the AC voltage signal at a second location of the other of the first tubular conduit or the second tubular conduit; an AC voltage signal measuring device comprising a signal input with a first input connector and second input connector; a first electrical connection between the first output connector of the signal output and the device for capacitive injection of the AC voltage signal, and a second electrical connection between the second output connector and a ground potential; a third electrical connection between the fluid in the first tubular conduit and the second tubular conduit and the ground potential; and an AC voltage signal evaluating device, said evaluating device configured to interact with the AC voltage signal measuring device such that a characteristic change of the amplitude of the measured AC voltage signal points to an incorrect vascular access, wherein the first input connector is electrically connected to the capacitive output device, and the second input connector is electrically connected to the ground potential.