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Updated: May 14, 2025
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Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
Published on: June 1, 2012
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Flexible porous microneedle array for bioelectric skin patch
Soichiro Tottori1, Mirai Matsuura2, Sae Ichinose1
1Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-1 Aramaki Aoba, Aoba-ku, Sendai, 980-8579, Japan.
Biomedical Microdevices
|May 10, 2025
Summary
Flexible microneedle patches offer improved drug delivery and ionic current pathways. This innovation enhances adaptability to skin curvature, reducing transdermal resistance for effective bioelectric applications.
Area of Science:
- Biomedical Engineering
- Materials Science
- Dermatology
Background:
- Porous microneedles facilitate transdermal drug delivery and ionic current.
- Conventional microneedle arrays are rigid, limiting application on curved skin.
- Flexibility is crucial for effective microneedle-based transdermal therapies.
Purpose of the Study:
- To develop a flexible porous microneedle array integrated onto a flexible substrate.
- To evaluate the impact of flexibility on skin adaptability and transdermal ionic resistance.
- To create a novel microneedle-based bioelectric skin patch for stimulation and drug delivery.
Main Methods:
- Direct integration of porous microneedles onto a flexible substrate.
- Numerical and analytical modeling to assess transdermal resistance reduction.
- Combination with an enzymatic battery to form a bioelectric skin patch.
Main Results:
- The flexible microneedle array conforms to curved skin surfaces.
- Reduced transdermal ionic resistance was achieved with the flexible array.
- A stable transdermal current was generated by the microneedle-based bioelectric skin patch.
Conclusions:
- Flexible porous microneedle arrays enhance adaptability and reduce transdermal resistance.
- The developed bioelectric skin patch is suitable for transdermal stimulation and drug delivery.
- This technology offers a promising platform for advanced transdermal applications.
