Medical Devices: Evidence and Research (Nov 2019)
Injection And Infusion Technology Disruption For Use In MRI
Abstract
M Kalmar, A Boese, R Landes, M Friebe Intelligente Katheter INKA, Otto-Von-Guericke University Magdeburg, Magdeburg, GermanyCorrespondence: M KalmarIntelligente Katheter INKA, Otto-von-Guericke University Magdeburg, Universitaetsplatz 2, Magdeburg 39106, GermanyTel +49-391-67 57025Email [email protected]: Contrast media injections, infusions, or experiments that require a constant volume flow close to or within a very high magnetic field like in magnetic resonance imaging (MRI) require a liquid reservoir and a power unit to deliver the fluid. However, most power units are driven by motors that are either not MRI-compatible or require external connections that restrict mobility and usage. In this paper, the development of a highly portable, lightweight, and MRI-compatible pump system is explained.Methods: The energy required to deliver the flow is generated using a pressurized bottle concept. The valve inside the bottle is opened to create a flow which should be maintained constant. In order to find the optimal flow resistance for a constant flow rate, we created multiple setups with different flow resistance.Results: We measured the flow rates for different flow resistances by attaching a restring valve to the bottle. The results clearly show that high flow resistance results in lower and more constant flow rate.Discussion: The optimal flow rate achieved using our current setup was significantly constant but not ideal. Consequently, such a pump system can be used in many medical applications like MRI-compatible contrast agent injectors.Keywords: MRI-compatible, pump system, pressure, fluid, constant flowrate, injection, infusion
