RT Journal Article SR Electronic A1 Sobota, Lubos A1 Penhaker, Marek A1 Kubicek, Jan T1 Sensor for Blood Outflow in Intravenous Intervention Detection JF Acta Mechanica Slovaca YR 2018 VO 22 IS 1 SP 40 OP 45 DO 10.21496/ams.2018.007 UL https://www.actamechanica.sk/artkey/ams-201801-0007.php AB This paper deals with an issue, resulting in exceptional cases in intraaortic balloon counter pulsation. After analyzing the problem and find a worthy solution for detecting small concentrations of blood mixed with water content in the transparent tube, the first two chapters, optoelectronic detection method chosen. This principle is in the third part, which can be considered as the know-how of the entire thesis, 7 complex experimental measurements verified the accuracy. In this section, selected the best optoelectronic couple, the ideal setting and the algorithm chosen to evaluate the content of the tube. The final chapter is a self-designed device, called INKE1, which is able to repeatedly identify the contents in the tubing from the air, water and up to 0.1% of blood in the water.