NOVEL MANUFACTURING METHOD OF MICRONEEDLE ARRAY

PROBLEM TO BE SOLVED: To provide a manufacturing method of a microneedle array with sharp tip ends.SOLUTION: A casting mold with a fine opening is formed at a tip of a microneedle, and a thermoplastic resin is thermally crimped by an injection molding method and a press method to produce burr. When...

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Bibliographic Details
Main Author HAMAMOTO HIDETOSHI
Format Patent
LanguageEnglish
Japanese
Published 08.08.2016
Subjects
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
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Summary:PROBLEM TO BE SOLVED: To provide a manufacturing method of a microneedle array with sharp tip ends.SOLUTION: A casting mold with a fine opening is formed at a tip of a microneedle, and a thermoplastic resin is thermally crimped by an injection molding method and a press method to produce burr. When the thermoplastic resin is cooled down to enhance the hardness, the burr is fractured to form a sharp tip at the tip end of the microneedle. The manufacturing method can produce a microneedle array with sharp tip ends. This method can thus easily manufacture the microneedle array that can easily puncture a skin by just pressing it with a finger.SELECTED DRAWING: Figure 2 【課題】鋭利な先端部を持つマイクロニードルアレイの製造方法を提供する。【解決手段】マイクロニードルの先端部に微細な開口部を持つ鋳型を作成し、熱可塑性樹脂を射出成形法やプレス法で圧着して、バリを発生させる。熱可塑性樹脂が冷えて硬度が高くなった時に、バリを破断することによって、マイクロニードルの先端部に鋭利な先端を作製する。この製造方法により、鋭利な先端を持つマイクロニードルアレイを作製することができる。この結果、指で押圧するだけで、容易に皮膚に穿刺できるマイクロニードルアレイを作製することができるようになった。【選択図】図２
Bibliography:Application Number: JP20150016133