Stick injection "microneedle pump"

Flow-Generating Microneedles Enable Fast Injection of Drugs and Vaccines

Overview

　Microneedles with lots of painless needles are expected to spread rapidly in the beauty field and be used more for self-medication and simple vaccine administration, which are the cornerstones of remote medical treatment. However, conventional methods of applying (or encapsulating) a drug or vaccine to a microneedle and eluting them after skin prick have limited injection volume and speed. The inventors have developed a porous microneedle (PMN), which imparts an electrical "flow" (electroosmotic flow) that allows for high volume and high speed injection with an electric "microneedle pump" and rapid collection of subcutaneous tissue fluid.　

Transdermal Electroosmotic Flow with a Bioelectric PMN Patch

Product Application

・DDS for transdermal administration of drugs and cosmetic ingredients　
・Body fluid sampling

Related Works

[1] Nat. Commun., 12, 658 (2021)
[2] Adv. NanoBiomed Res. 2021, 2100066

IP Data

IP No.　 ： WO2020/179850, JP2020-195309
Inventor ： NISHIZAWA Matsuhiko, YOSHIDA Shotaro, ABE Hiroya and others
keyword ： microneedle,　transdermal administration, drug delivery, vaccine, electroosmotic flow