Microneedles can usually be defined as needles with sizes ranging from 10-2000 μm * 10-50 μm(H * W). The drug delivery device is a microneedle array, where many microneedles are arranged in an array on a drug delivery vehicle. The microneedles can directly pass through the cuticle of the skin without touching the pain nerve, forming a drug delivery channel on the skin surface, so that the drug can reach the specified depth of the skin, enter the subcutaneous capillary network and be absorbed, promoting the drug penetration without causing pain or skin damage. Thus, microneedling helps to improve the efficiency of drug delivery and improve patient compliance.
Microneedle Patch Technologies