Patent ID: 8834447
Filing Date: 2014-09-16
Classification: A61K,A61M,A61P,B82Y

Abstract:
1. A transdermal drug delivery patch, comprising: a substrate; a carrier, disposed on a surface of the substrate, and formed by a biodegradable polymer, and having a nano-particle with a photothermal conversion effect embedded in the carrier for converting light into heat; and a drug, encapsulated in the carrier; wherein, when the carrier of the transdermal drug delivery patch is punctured into a skin, and the nano-particle of the carrier absorbs near-infrared (near-IR) radiation, the nano-particle converts the near-IR radiation into heat to melt the carrier to release the drug encapsulated in the carrier into the skin; wherein a shape of the carrier comprises a micro-needle, a triangular cone, a circular cone, or any shape capable of piercing the skin; wherein the biodegradable polymer is one selected from the collection of polycaprolactone (PCL) and methylcellulose.