Dissolvable base scaffolds allow tissue penetration of high-aspect-ratio flexible microneedles.

Yagi, Satoshi; Yamagiwa, Shota; Kubota, Yoshihiro; Sawahata, Hirohito; Numano, Rika; Imashioya, Tatsuya; Oi, Hideo; Ishida, Makoto et al. · Adv Healthc Mater · 2015

basic_science · Level V

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Abstract

Microscale needle technology is important in electrophysiological studies, drug/chemical delivery systems, optogenetic applications, and so on. In this study, dissolvable needle-base scaffold realizes penetration of high-aspect-ratio flexible microneedles (e.g., <5 μm diameter and >500 μm length) into biological tissues. This methodology, which is applicable to numerous high-aspect-ratio flexible microneedles, should reduce the invasiveness and provide safer tissue penetrations than conventional approaches.

Medical subject headings