A Comparative, Open-Label, Randomized Study Evaluating Efficacy of a Hand-Held Device Using a Combination of Vibration and Cold Versus Only Vibration in Reducing the Pain Sensation of Multiple Local Anesthesia Injections During Hair Transplant
January 2026
TLDR The Leniwand device, combining vibration and cold, reduces pain more effectively than vibration alone during hair transplant injections.
The study evaluated the effectiveness of a hand-held device, the Leniwand, which combines vibration and cold, in reducing pain from local anesthesia injections during hair transplant surgery, compared to a device using only vibration. Conducted on 30 male patients aged 27-51, the study found that the combination of cold and vibration significantly reduced pain for 17 participants, while 7 experienced some reduction, 5 noticed no difference, and 1 reported increased pain. The study concluded that the Leniwand is more effective in pain reduction than vibration alone, though it was limited by the selection of only male participants.
