Disinfection, cleaning and passivation

An innovative disinfection, cleaning and passivation process for technical medical devices was developed. The effectiveness in terms of purity and passivation quality was demonstrated using product-equivalent test specimens with a test method also developed in the project.

For medical devices (implants, surgical instruments), it must be ensured during production and use that no contaminants remain on the product. Due to a lack of processes, sterile dirt has so far remained attached, e.g. in blind holes or narrow lumens. By using the cavitation principle in a vacuum chamber for all process steps, any contamination could be dissolved even in hard-to-reach places with an appropriate process flow and process-specific chemistry. In addition, disinfection and passivation of the products can take place. Scientific proofs of purity and complete passivation could be realized for complex bodies with comparably low and non-destructive effort. A process and a test method could be developed whose effectiveness in terms of purity and passivation quality can be demonstrated using product-equivalent test specimens.