Autotransfusion - Blood Management Systems – oxygenators and extracorporeal blood circulation systems used in cardiac surgery to keep patients alive during open heart surgery by taking over cardiac and pulmonary functions. KAY-LIQUID special Needle-felts are successfully used for such critical applications. Frequently, only a highly specialized solution leads to a reliable and efficient process. Optimized yield and the availability of the filter elements are always essential. Kayser Filtertech offers filter media that meet the high demands of very individual filtration processes for Bio Technology & food contact.