WebMD - Painless Shot Devices, Snot Suckers, and A "Special" Whistle
Buzzy in WebMD: "I had my flu vaccine last year with the Buzzy and it was 100% painless." Rod Moser PA PhD.
"The Buzzy. It looks like a lady bug and uses a cold pack as well as vibration to help reduce injection pain. The Buzzy kit also includes some cute laminated cards that require a child to count monkeys, for example, to add to the needle distraction. The Buzzy costs ; considerably less expensive than that Vibration Anesthesia Device, but 35 times more than the shot-blocker pad. I had my flu vaccine last year with the Buzzy and it was 100% painless."