Internal arteriovenous fistula stenosis PTA practical training model

The utility model provides an internal arteriovenous fistula stenosis PTA practical training model which comprises an arm model, a simulation artery blood vessel, a first simulation vein blood vessel, a second simulation vein blood vessel and a balloon dilatation catheter. The arm model is provided with a puncture port communicated with the first simulation vein blood vessel; the PTA practical training model can display the concepts of internal arteriovenous fistula and vascular stenosis and the connection mode of the internal arteriovenous fistula, can help a beginner to practice the internal arteriovenous fistula stenosis balloon dilatation on the model through the vascular stenosis and a puncture port, and helps the beginner to understand the concepts and operation processes of the internal arteriovenous fistula stenosis balloon dilatation. The balloon dilatation effect can be displayed vividly and perceptually through the induction contact, the induction plate and the prompt alarm device, and for an inexp