Abstract
This paper reports on design, making the FEM analysis model and testing of prototype hardness sensor for endoscopic application with the suction tube. This sensor was designed for a purpose of measuring the hardness of hematoma surface. It consists of an aspiration cylindrical tube made of silicon rubber and a rigid cylinder made of acryl. First, overview of the developed sensor system is presented. Next, fundamental characteristics of the sensor were examined by using the Fluid-Structural interaction FEM analysis. The results showed that the analytical values has corresponding with the theoretical values and the sensor can measure elasticity of clot surface.