Hydrogel-Forming Microneedles: Current Advancements and Future Trends

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery Systems

Background:

• Microneedles, including solid, hollow, coated, and dissolving types, have historically enhanced transdermal drug delivery for applications like vaccinations and antibiotics.
• Recent advancements focus on hydrogel-forming microneedles (HFMs), leveraging hydrogel properties for novel applications.

Purpose of the Study:

• To present a focused review of recent developments and trends in hydrogel-forming microneedles (HFMs).
• To highlight potential future directions and applications for HFMs in healthcare.

Main Methods:

• Review of current literature on microneedle technology, with a specific emphasis on hydrogel-based systems.
• Consolidation of information regarding HFM design, hydrogel formulation, and fabrication processes.

Main Results:

• HFMs combine transdermal drug delivery capabilities with the potential for minimally invasive monitoring.
• The swelling nature of hydrogels in HFMs facilitates passive extraction of interstitial fluid.
• HFMs show promise for biocompatible, minimally invasive monitoring devices.

Conclusions:

• Hydrogel-forming microneedles represent a significant advancement in transdermal technology.
• HFMs offer dual functionality for both treatment and personalized healthcare monitoring.
• Future opportunities lie in leveraging HFMs for personalized diagnostics and therapeutics.