A special upgrade
The WCD² was developed as an "add-on" for a hypothermia unit that had already been on the market. Installing it on the hypothermia unit and putting into operation requires just a few simple steps.
The oxidants produced ensure that bacteria are effectively broken down and that the formation of a biofilm in the hypothermia unit is permanently prevented.
Biofilms on surfaces facilitate the adhesion and multiplication of bacteria.
The WCD² ensures that all hoses and water-bearing surfaces of the unit are washed/flushed and disinfected. This is done with oxidants generated by electrolysis using the boron-doped diamond electrodes installed in the WCD².
To ensure that the desired electrolysis can take place and that a constant amount of oxidants is produced, boron-doped pro aqua diamond electrodes are used on the one hand and the water circuits of the hypothermia unit are filled with WCD² Water on the other hand.
Bacteria can be life-threatening during open-heart surgery
Bacteria such as Pseudomonas aeruginosa, Legionella and especially Mycobacterium chimaera can pose a great danger. Heating and cooling water in hypothermia equipment being contaminated with bacteria and these bacteria coming into contact with the patient, e.g. through aerosol formation, can seriously endanger a patient's life.
In 2015, the German Society for Thoracic and Cardiovascular Surgery (“Deutsche Gesellschaft für Thorax-, Herz- und Gefäßchirurgie DGTHG”) issued an information letter on infections with Mycobacterium chimaera following heart surgery. This letter clearly points out that the use of hypothermia devices presents a risk of infection with pathogens and that most of the patients fall seriously ill.
3 years of research and development:
The WCD²’s performance
Developing the WCD² took about three years until the final four-month scientific study was carried out under real-world conditions at MED UNI Graz’ Institute for Hygiene in 2019. The study confirmed the lasting disinfection effect of the WCD² directly on the hypothermia device.
Starting at the end of 2019, a long-term test with the WCD² lasting eleven months was carried out by the head of the Department of Cardiotechnology at Regensburg's University Hospital to test the unit's disinfection performance in practice.
The results of the study that lasted almost an entire year are available in a technical article.
The most important results of the study of the
University Hospital Regensburg
Permanently guaranteed protection of patients and staff