MICRONEEDLE PATCH FOR DELIVERING AN ACTIVE INGREDIENT TO SKIN
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Jan 13, 2023
filing date -
Mar 27, 2015
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Abstract
The present invention relates to a microneedle patch composition comprising one or more microneedles each comprising: (a) a tapered tip portion containing a therapeutically active ingredient dispersed in a matrix of a biodegradable polymer capable of providing sustained release of the therapeutically active ingredient over a period of at least two days after insertion of the microneedle or microneedles into the skin, and (b) a fast dissolving microneedle backing layer portion containing a water-soluble polymer overlayering the tip portion, said microneedle or microneedles being attached to and extending from an adhesive surface of a removable substrate.
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