Invention Grant
- Patent Title: Microneedle array
- Patent Title (中): 微针阵列
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Application No.: US13386105Application Date: 2010-07-15
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Publication No.: US08696638B2Publication Date: 2014-04-15
- Inventor: Takaaki Terahara , Seiji Tokumoto , Akira Tamura , Yumiko Yamada
- Applicant: Takaaki Terahara , Seiji Tokumoto , Akira Tamura , Yumiko Yamada
- Applicant Address: JP Tosu-shi, Saga JP Taito-Ku, Tokyo
- Assignee: Hisamitsu Pharmaceutical Co., Inc.,Toppan Printing Co., Ltd.
- Current Assignee: Hisamitsu Pharmaceutical Co., Inc.,Toppan Printing Co., Ltd.
- Current Assignee Address: JP Tosu-shi, Saga JP Taito-Ku, Tokyo
- Agency: Nath, Goldberg & Meyer
- Agent Sheldon M. McGee
- Priority: JPP2009-172525 20090723
- International Application: PCT/JP2010/062008 WO 20100715
- International Announcement: WO2011/010605 WO 20110127
- Main IPC: A61M5/00
- IPC: A61M5/00 ; A61N1/30
Abstract:
Relations between crystallinity and performance of a biodegradable resin, between weight-average molecular weight and strength thereof, and between weight-average molecular weight and performance thereof were clarified. As a result thereof, when a microneedle array was provided with microneedles containing noncrystalline polylactic acid which had a weight-average molecular weight of 40,000 to 100,000, it was possible to obtain a microneedle array which could maintain its functional performance.
Public/Granted literature
- US20120136312A1 MICRONEEDLE ARRAY Public/Granted day:2012-05-31
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