Title:
HIGH-PERFORMANCE MICRO-NEEDLE ARRAY
Document Type and Number:
WIPO Patent Application WO/2021/241486
Kind Code:
A1
Abstract:
Provided is a micro-needle array of which all the fine needles can be more easily inserted into the skin regardless of the positions where the fine needles of the micro-needle array are located on a substrate. The micro-needle array comprises a substrate and a plurality of micro-needles disposed on one surface of the substrate, wherein the tip sections of the plurality of the micro-needles have height differences, and the needle lengths are 80-2,000 μm inclusive. It is desirable that the height differences of the plurality of micro-needles be based on the protrusions and recesses of the substrate.
Inventors:
QUAN YING-SHU (JP)
LI YING-ZHE (JP)
KAJIYAMA KENJI (JP)
SAITO MIO (JP)
YAMASHITA HIROFUMI (JP)
KAMIYAMA FUMIO (JP)
LI YING-ZHE (JP)
KAJIYAMA KENJI (JP)
SAITO MIO (JP)
YAMASHITA HIROFUMI (JP)
KAMIYAMA FUMIO (JP)
Application Number:
PCT/JP2021/019584
Publication Date:
December 02, 2021
Filing Date:
May 24, 2021
Export Citation:
Assignee:
COSMED PHARMACEUTICAL CO LTD (JP)
International Classes:
A61M37/00
Domestic Patent References:
| WO2016114213A1 | 2016-07-21 | |||
| WO2017208962A1 | 2017-12-07 | |||
| WO2018124290A1 | 2018-07-05 |
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Other References:
YING-SHU QUANFUMIO KAMIYAMA: "The Course of Productization of Micro-needle", THE ARCHIVES OF PRACTICAL PHARMACY, THE ACADEMY OF PHARMACEUTICAL SCIENCE AND TECHNOLOGY, JAPAN, vol. 69, no. 4, July 2009 (2009-07-01), pages 272 - 276
G. YA ET AL.: "Evaluation needle length and density of microneedle arrays in the pretreatment of skin for transdermal drug delivery", INTERNATIONAL JOURNAL OF PHARMACEUTICS, vol. 391, 2010, pages 7 - 12, XP027018863
J. PHARMACEUTICS, vol. 480, 2015, pages 152 - 157
G. YA ET AL.: "Evaluation needle length and density of microneedle arrays in the pretreatment of skin for transdermal drug delivery", INTERNATIONAL JOURNAL OF PHARMACEUTICS, vol. 391, 2010, pages 7 - 12, XP027018863
J. PHARMACEUTICS, vol. 480, 2015, pages 152 - 157
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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