This technology features a patch where multiple individual microneedles are arranged in a two-dimensional mesh-structured water-soluble base layer. Once inserted into the skin, applying moisture causes the base layer to dissolve, leaving the needles embedded individually. The base layer can include endothermic salts to absorb heat during dissolution and may be provided as a system integrated with a moisture-supplying component.
Hypodermic needles cause pain by stimulating nerve endings and require professional handling. Existing microneedle patches often lose adhesion due to skin contours or muscle movement, causing some needles to detach, which leads to insufficient delivery of active ingredients or dispersion to non-target areas.
This technology uses a water-soluble base layer that dissolves faster than the needles, ensuring they remain securely embedded in the skin even after the base is removed. When used with moisture-supplying components like hydrogel sheets, mask packs, or essences, the base layer dissolves without residue, allowing nutrients to be absorbed through the channels created by the needles. It can be applied to functional mask packs, transdermal drug delivery patches, and post-procedure home care products, ensuring uniform delivery of active ingredients even on curved facial areas.
US11697009B2, US2023-0080643A1
