Microneedle drug delivery

Microneedles are microscopic applicators used to deliver vaccines or other drugs across various barriers: while transdermal application is the most popular use of microneedles, intraocular and intracochlear microneedle drug delivery systems are emerging.

How are they made?[edit | edit source]

Microneedles are constructed through various methods usually involving photolithographic processes or micromolding.
These methods involve etching microscopic structure into resin or silicon in order to cast microneedles.
Microneedles are made from a variety of material ranging from silicon, titanium, stainless steel, and polymers.
Some microneedles are made of a drug to be delivered to the body but are shaped into a needle so they will penetrate the skin.
The microneedles range in size, shape, and function.

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