Fleximodel IV and Arterial Puncture ArmThis newly developed model of the human arm offers a significantly higher degree of realism in terms of appearance, feel and particularly puncture resistance in comparison to conventional models. The vein system is modelled in three dimensional form and can be punctured at any chosen place. Both the veins and the skin possess self closing characteristics. In the event of faulty or very frequent puncturing at a single site, a haematoma will occur that