As soon as the concept for the product has been finalized, work on its actual development can begin. Here it is important to keep the customer benefit in mind at all times and to minimize the biggest risks for safety and the manufacturing process. This is done by permanent reviewing of the process. When problems arise, previously defined measures take hold. The development phase also involves proving the suitability of the product for practical use in clinical studies. They are always carried out together with the later users. A further aspect in this phase is selection of qualified suppliers, who must also fulfill high quality standards in order to be considered as candidates for cooperation with B. Braun.