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公开(公告)号：US12036378B2
公开(公告)日：2024-07-16
申请号：US17055653
申请日：2018-05-18
发明人： Geunbae Lim , Jungho Lee , Byoungsun Choi , Hyeonsu Woo
CPC分类号： A61M37/0015 , A61K9/0021 , A61K9/7046 , A61M2037/0023 , A61M2037/0053
摘要： A transdermal drug delivery patch according to an exemplary embodiment of the present invention includes: a flexible base layer; and a plurality of microneedle disposed at one surface of the base layer. Each of the plurality of microneedles includes a biodegradable polymer and a drug and has an empty space inside. Each of the plurality of microneedles is formed as a star-shaped pyramid including a plurality of protrusions extending in a radial direction, and a part between two protrusions adjacent along the circumferential direction among the plurality of protrusions is concave.
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公开(公告)号：US12121618B2
公开(公告)日：2024-10-22
申请号：US17055640
申请日：2018-05-18
发明人： Geunbae Lim , Jungho Lee , Byoungsun Choi , Hyeonsu Woo
CPC分类号： A61K9/7092 , A61K9/0021 , A61M37/0015 , B29C33/3857 , B29C35/0805 , B29C41/50 , A61M2037/0046 , A61M2037/0053 , B29L2031/7544
摘要： A transdermal drug delivery patch includes a flexible base layer, and a plurality of microneedles disposed at one surface of the base layer and including a biodegradable polymer and a drug. Each of a plurality of microneedles is formed as a star-shaped pyramid including a plurality of protrusions extending in a radial direction, and a concave shape is formed between two protrusions adjacent along a circumferential direction among a plurality of protrusions.
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