Drug delivery system

Drug delivery system comprising:

• at least one reservoir comprising a meander shape or spiral shape, the reservoir comprising an inlet and a filter;
• a measurement device configured to determine a parameter of the at least one reservoir;
• and
• at least one micropump configured to deliver a fluid from the reservoir to an outlet;
• wherein the filter is arranged at the inlet and configured to allow air flowing into the reservoir when the fluid is delivered out of the reservoir;
• wherein the measurement device is implemented as capacitance measurement device comprising two electrodes arranged with the reservoir inbetween, wherein the reservoir and/or a fluid within the reservoir acts as a dielectricum;
• wherein the capacitance measurement device is configured to determine a dielectric constant and/or capacity, wherein the dielectric constant and/or, wherein the capacity is dependent on a fluid level of the reservoir;
• wherein comprising a control configured to determine the fluid level based on a capacitance signal determined by the capacitance measurement device;
• wherein the control is configured to detect using the capacitance signal determined by the capacitance measurement device at least one of the following:
• catheter blockage, pump failure or glass break.