Peripheral Microneedle Patch for First-Aid Hemostasis

Jungho Lee, Sebin Park, Phuong Thao Le, Geunho Lee, Hyoun Wook Lee, Gaeun Yun, Juhyeong Jeon, Jeongwoo Park, Duy Tho Pham, Young Sook Park, Hoon Lim, Chulhong Kim, Tae Sik Hwang, Seung Whan Kim, Geunbae Lim

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Despite the minimized puncture sizes and high efficiency, microneedle (MN) patches have not been used to inject hemostatic drugs into bleeding wounds because they easily destroy capillaries when a tissue is pierced. In this study, a shelf-stable dissolving MN patch is developed to prevent rebleeding during an emergency treatment. A minimally and site-selectively invasive hemostatic drug delivery system is established by using a peripheral MN (p-MN) patch that does not directly intrude the wound site but enables topical drug absorption in the damaged capillaries. The invasiveness of MNs is histologically examined by using a bleeding liver of a Sprague–Dawley (SD) rat as an extreme wound model in vivo. The skin penetration force is quantified to demonstrate that the administration of the p-MN patch is milder than that of the conventional MN patch. Hemostatic performance is systematically studied by analyzing bleeding weight and time and comparing them with that of conventional hemostasis methods. The superior performance of a p-MN for the heparin-pretreated SD rat model is demonstrated by intravenous injection in vivo.

Original languageEnglish
Article number2201697
JournalAdvanced healthcare materials
Volume12
Issue number7
DOIs
StatePublished - 13 Mar 2023

Keywords

  • hemostasis
  • microneedles
  • peripheral drug delivery
  • wound healing

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