The Buzzy Device
COLD
For the purposes of our study, we chose to use the ladybug-shaped Buzzy (Buzzy Healthcare mini ladybuzz, code BKHM3). The wings were kept in the freezer before the procedure and were taken out a few minutes before application on the skin, so that the patient did not feel the discomfort of excessive cold. It should be noted that the use of the wings was mandatory in our study to evaluate the effect of combined cold and vibration. Once the child and the nurse were ready, the frozen wings were inserted into the back of the ladybug's body through fixed elastic bands. Then, the Buzzy device was applied on the patient's skin 5 cm above the planned puncture site on the forearm (Fig. 