Microneedle Preparation Technologies - Chemical & Pharmaceuticals - Pharmaceuticals

Microneedle delivery methods to the epidermis can be divided into four types: ligation followed by application (solid microneedles), ligation followed by release (soluble microneedles, frozen microneedles), coated delivery (coated microneedles), and injectable delivery (hollow microneedles, gel microneedles). Etching technology and MEMS processing technology are generally used to prepare microneedles with sufficient mechanical force, mostly for preparing solid microneedles, hollow microneedles, and coated microneedles, while photolithography is mostly used to prepare soluble microneedles.