Surgical and medical instruments and apparatus; medical equipment for therapeutic purposes, electromedical devices and parts thereof, in particular electronic devices for electrical stimulation of tissue and nerves, such as external or implantable pacemakers, programming and inspection devices for pacemakers, defibrillators, cardioverters, electrodes, circulation support equipment, cardiological diagnostic equipment, catheters, in particular PTCA catheters, systems for implanting stents, stents, equipment for balloon dilation, analytical equipment, patient monitoring equipment and medical measurement and control equipment, artificial organs, endoprotheses, implants