Luísa, AnaSilveira, AntónioMoutinho, SílviaRamos, SusanaCarvalho, DurãoBatista, ElsaFigueira, FernandoAlves, JoaquimRodrigues, José MiguelFerreira, Maria do CéuMoreira, NúriaMendes, Ruben2019-04-122019-04-122018978-972-763-172-8http://hdl.handle.net/10400.22/13544In the human body, the circulatory system is responsible for the process of transporting blood, which among many other functions delivers nutrients to the cells. In accordance with this physiological principle, supporting methodologies for therapeutic processes were developed that have enabled medical measuring instruments to be developed. It was within this context that the first infusion pumps appeared in the 60 s and 70 s, that by using a pressure higher than the blood pressure allowed fluids to be administered directly into the human body, including medications, blood components, and nutrients amongst others. Currently and according to the international standard IEC 60601-2-24 these devices are designated by infusion pumps. Because it is an infusion pump with the respective accessories, the term perfusion systems is also used as nomenclature throughout this document.engInfusion PumpsMetrologyMetrology in Health – Good Practices Guide - Part II - Chapter III - Infusion Pumpsbook