High-performance ceramics for medical devices
The intracardiac pump made of bioinert aluminum oxide supplies the heart with blood after a heart attack or heart surgery. The application was developed by TU Wien and MedUni Vienna.
The alumina material used, LithaLox HP 500, is characterized by high mechanical strength and wear resistance as well as low surface roughness (Ra = 0.4 µm). This can reduce the formation of blood clots. The pump is driven by helium and ensures blood supply during the healing phase without electric current, which should prevent thermal damage to the surrounding tissue.
Bioinert high-performance ceramics with perfect surface quality can, for example, minimize cell interaction on components with direct blood contact and prevent blood clotting.