Applicator for applying functional substances into human skin
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United States of America Patent
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Jan 15, 2013
Grant Date -
Mar 24, 2005
app pub date -
Sep 18, 2003
filing date -
Sep 18, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An applicator for applying functional substances, such as cosmetic powder, food color marking, India ink effect marks, or drugs into human skin, having a base, a plurality of microneedles fixed to and projecting from the base a distance only sufficient to penetrate into the stratum corneum or dermis, with the microneedles being of a material that is capable of disintegration and dispersion into the stratum corneum or dermis, such as maltose. The needles contain the functional substance for delivery into the stratum corneum or dermis. The microneedles are of a length approximately 0.5 to 500 μm when used to apply a functional substance to the stratum corneum, or are of a length of approximately 500 to 5,000 μm when used to apply a functional substance to the dermis.
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