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Polymeric Microneedle Array Fabrication by Photolithography
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3D Printed Multi-Functional Hydrogel Microneedles Based on High-Precision Digital Light Processing.

Wei Yao1, Didi Li1, Yuliang Zhao2

  • 1Department of Biomedical Engineering, Anhui Medical University and Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, China.

Micromachines
|December 28, 2019
PubMed
Summary
This summary is machine-generated.

3D printed hydrogel microneedles offer a low-cost, minimally invasive alternative for drug delivery and detection. This novel approach balances precision and stiffness for potential clinical applications.

Keywords:
3D printingdrug detectiondrug injectionmicroneedle

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Area of Science:

  • Biomaterials Engineering
  • Nanotechnology
  • Medical Devices

Background:

  • Traditional injection devices are often painful and cumbersome for patients.
  • Polymer microneedles (MNs) are emerging as a promising alternative in medicine.
  • Fabricating custom microneedle shapes at a low cost remains a significant challenge.

Purpose of the Study:

  • To develop a cost-effective and efficient method for fabricating hydrogel microneedles (H-MNs).
  • To investigate the multifunctional capabilities of H-MNs for drug delivery and detection.
  • To optimize the fabrication process for desired mechanical properties.

Main Methods:

  • Utilized a high-precision digital light processing (H-P DLP) 3D printing system to fabricate hydrogel microneedles.
  • Analyzed critical fabrication parameters, focusing on layer exposure time.
  • Evaluated mechanical properties, including precision and stiffness.
  • Assessed the biocompatibility and functionality for drug delivery and detection.

Main Results:

  • Optimized printing parameters, particularly layer exposure time, significantly influenced MN precision and stiffness.
  • Achieved a balance between precision and stiffness through parameter optimization.
  • Demonstrated the multifunctional capabilities of the fabricated H-MNs for minimally invasive drug injection and detection.
  • Confirmed the biocompatibility of the H-MNs.

Conclusions:

  • The H-P DLP 3D printing system offers a low-cost, fast, and versatile method for fabricating functional hydrogel microneedles.
  • The developed H-MNs exhibit promising mechanical properties and multifunctional capabilities for drug delivery and detection.
  • This technology holds potential for future clinical applications, improving patient comfort and treatment efficacy.