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How do microneedles deliver drugs? HD

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Published on Oct 9, 2013

Dr Ryan Donnelly, from the School of Pharmacy at Queen's University Belfast, demonstrates his microneedle technology that could revolutionise the way drugs are delivered -- from small molecules to vaccines and biological compounds.

The microneedle patches, which can range from the size of a phone sim card to the size of a mobile phone, are applied to the skin like a normal medical plaster. What makes Donnelly's system special compared to similar emerging 'needleless injection' platforms is that his array of just over 300 microneedles -- each just over half a millimetre high -- are made of biocompatible hydrogels that are not toxic to the human body, but can also take up biological fluids and so lead to new ways to monitor metabolites, such as blood sugar in diabetes, in the sick and healthy.

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