Journal
INTERNATIONAL JOURNAL OF PHARMACEUTICS
Volume 597, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ijpharm.2021.120301
Keywords
Transdermal drug delivery; Microneedle patch; Three-dimensional printing strategy
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Microneedle technology has great potential in controlled drug delivery, with 3D printing providing more flexibility in manufacturing methods. The review focuses on the successes of 3D printed microneedle-based patches and the state of the art in long-acting microneedles.
Microneedle (MN) technology shows excellent potential in controlled drug delivery, which has got rising attention from investigators and clinics. MNs can pierce through the stratum corneum layer of the skin into the epidermis, evading interaction with nerve fibers. MN patches have been fabricated using various types of materials and application processes. Recently, three-dimensional (3D) printing gives the prototyping and manufacturing methods the flexibility to produce the MN patches in a one-step manner with high levels of shape complexity and duplicability. This review aims to go through the last successes in 3D printed MN-based patches. In this regard, after the evaluation of various types of MNs and fabrication techniques, we will study different 3D printing approaches applied for MN patch fabrication. We further highlight the state of the art of the long-acting MNs and related progress with a specific look at what should come within the scope of upcoming researches.
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