Solid microneedle comprising drug and method for manufacturing the same
AssigneeLG Household & Health Care Ltd.
InventorsSeong-Su Kang, Seung-Hyun Jun
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Abstract
The present disclosure relates to a solid microneedle structure prepared using a water-insoluble polymer and a technique for manufacturing the same, wherein the technique can control the drug release rate of the microneedle: a rapid-release type or a sustained release type, the drug included in the microneedle may be various cosmetic or pharmaceutical active ingredients, and the microneedle can have an appropriate release rate suitable for the drug by the method of the invention.
Claims11
A method for manufacturing a solid type microneedle comprising a water-insoluble polymer, sugar and drug by solvent casting, comprising:
- (a) preparing a polymer solution by dissolving the water-insoluble polymer in a solvent;
- (b) adding the sugar and the drug to the polymer solution, wherein the sugar is added in a powder form and stirring for 1 to 10 minutes to maintain the sugar in an undissolved, dispersed state in the polymer solution;
- (c) injecting the polymer solution containing the sugar and the drug into a microneedle mold;
- and
- (d) drying and separating the microneedle from the microneedle mold.
Dependencies are inferred from the claim text.