Surgical and medical apparatus and instruments; medical apparatus for therapeutic purposes, electromedical apparatus and parts therefore, namely electronic apparatus for the electrical stimulation of tissue and nerves, including external or implantable pacemakers, programming and testing apparatus for pacemakers, defibrillators, cardioverters, electrodes, circulation relieving apparatus, cardiological diagnostic apparatus, catheters, namely PTCA catheters, medical guidewires, medical apparatus and systems constructed therefrom for implanting stents, stents, apparatus for balloon dilation, analysis apparatus, patient monitoring apparatus and medical measuring and control apparatus; apparatus for use in medical analysis; resuscitation apparatus; artificial organs, endoprostheses, implants