Almost every medical department at hospitals all around the world uses infusion devices to administrate fluids, nutrition, and medications to patients for the treatment of numerous different diseases and ailments. Depending on the intended use of the equipment e.g., if it is used for anaesthesia of adults or for medical treatment of premature infants, the accuracy of the equipment can be more or less important. A well-defined metrological infrastructure can help to ensure that infusion devices function properly and are as accurate as needed for their use. However, to establish a metrological infrastructure an appropriated knowledge about infusion devices in use is necessary that enables calibration and testing procedures to be properly defined. This paper summarises the results of various tests conducted with three types of devicesa syringe pump, an infusion device analyser and an insulin pump.
Microfluidic devices are gaining importance in various fields of pharmacy, flow chemistry and healthcare. In the embedded microchannel, the flow rates, the dynamic viscosity of the transported fluids and the fluid dynamic properties play an important role. Various auxiliary functional components of microfluidic devices such as flow restrictors, valves and flow meters need to be characterised with liquids used in several microfluidic applications. However, calibration with water does not always reflect the behaviour of the fluids used in the different applications. Therefore, several National Metrology Institutes (NMI) have developed micro pipe viscometers for traceable in-line measurement of the dynamic viscosity of liquids used in flow applications as part of the EMPIR 18HLT08 MeDDII project. These micro pipe viscometers allow the calibration of any flow device at different flow rates and the calibration of the dynamic viscosity of the liquid or liquid mixture used under actual flow conditions. The traceability of the micro pipe viscometer, the validation of the stated measurement uncertainty with eight liquids as well as dynamic viscosity measurements with in-line sensors are presented in this paper.
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