Cardiac surgery has been an independent medical specialty since 1993. It has developed from general surgery, focusing on thoracic and cardiovascular surgery. It deals with the surgical treatment of congenital and acquired diseases and injuries of the heart and the vessels near the heart.
The cardio technician works in an interdisciplinary field between cardiovascular surgery and medical technology. Depending on the location, his central task is the preparation, operation, monitoring, or further development of heart-lung machines and other medical-technical monitoring and treatment equipment.
The heart-lung machine (HLM) is a complex medical-technical device that takes over the tasks of the heart (pumping function) and lungs (enrichment of the blood with oxygen) for a limited period during open-heart surgery. The blood leaves the body via a tube system. It is returned to the body after it has been enriched with oxygen (extracorporeal circulation). With the help of the heart-lung machine, all open heart operations become possible.