A medical piezo micropump moves liquid medication in very small, controlled amounts. Inside the pump, a piezoelectric element bends each time a voltage is applied. That motion pushes a membrane, which moves a precise volume of fluid with every stroke. There is no motor and no gearbox, so the pump stays small and thin.
The piezo element needs a high-voltage waveform to move, while an insulin pump runs on a small battery. The Boréas piezo driver closes that gap. The BOS1931 generates the drive waveform from a single low-voltage supply, in one chip, and sets how much fluid each stroke delivers.
An insulin pump attached to the body has to be small, thin, and comfortable to wear for days. It runs on a small battery, needs very accurate doses, and has to meet a tight cost target for the full solution.
A piezo micropump takes much less space than the pump mechanisms used in insulin pumps today. Driven by the BOS1931, it also consumes less power, both in sleep and while pumping. Because you can control and calibrate the amplitude of the drive signal, each dose stays ultra-precise without a flow sensor. Fewer components means a lower total solution cost.
Ultra-Precise Dosing
Control and calibrate the drive signal amplitude for dosing precision better than 0.5 µL, without a flow sensor.
Energy-Efficient
Low current in sleep mode (2.4 µA) and low consumption while pumping extend battery life between charges or replacements.
Compact and Thin
A piezo micropump takes far less space than current insulin pump mechanisms. The BOS1931 in WLCSP packaging keeps the driver small and thin.
Recommended Part
For insulin pumps built on piezo micropumps, we recommend the Boréas Technologies BOS1931. This single-chip driver delivers high-voltage, low-power performance with energy recovery, differential output, and waveform synthesis. It supports capacitive loads up to 820 nF and operates from a 3 to 5.5 V supply.
A pump that uses a piezoelectric element to move small, controlled volumes of liquid medication, with no motor or gears.
It turns the battery's low voltage into the high-voltage waveform that moves the piezo element, and it sets the volume of each pump stroke.
Yes. Controlling and calibrating the drive signal amplitude gives dosing precision better than 0.5 µL.
2.4 µA in sleep mode, with low consumption while pumping.
