In this study, the hollow and highly flexible polydimethylsiloxane microneedles were fabricated in a one step and simple design. For this purpose, a commercial dermastamping device (Dermastamp® 140 DRS) was used as a mold to obtain highly flexible PDMS microneedles containing channels. With the proposed design, microneedles with a total height of 1500 μm, 1500 μm center-to-center spacing and 150 μm channel diameter was successfully fabricated. These data are all compatible with the dimensions and the geometry of the mold used. Then, a syringe adapter was fabricated with a 3D printer and combined with the hollow PDMS microneedle patch for the high-throughput production of alginate beads. After the adapter and the hollow PDMS microneedle patch combination was placed into the syringe pump, the mostly spherical alginate beads with a mean diameter of 2.0 ± 0.3 mm was produced. To sum up, the proposed design and fabrication scheme first offer a novel and simple strategy for the fabrication of hollow polymeric microneedles. Moreover, this system has the potential to be used not only for the high-throughput microfluidic fabrication of polymeric beads, but also in controlled drug delivery systems and cell encapsulation studies.
hollow microneedle microfabrication one step polydimethylsiloxane alginate beads
Birincil Dil | İngilizce |
---|---|
Konular | Mühendislik |
Bölüm | Research Articles |
Yazarlar | |
Yayımlanma Tarihi | 28 Eylül 2022 |
Gönderilme Tarihi | 25 Temmuz 2022 |
Yayımlandığı Sayı | Yıl 2022 Cilt: 9 Sayı: 3 |
Hittite Journal of Science and Engineering Creative Commons Atıf-GayriTicari 4.0 Uluslararası Lisansı (CC BY NC) ile lisanslanmıştır.