Lancers and Lancets for taking a blood sample
If you would like there is a library of videos on you tube of How To use and maintain your Lancing pen
Painless blood sampling for everyone. The Lancing device has a simple tip exchange system to match the depth the needle needs to penetrate the epidermis to reach your blood vessel/capillary. The vacuum that you create by pulling the plunger out, lifts the skin away from the nerve where the pain is triggered when using a standard needle.