A diagram of Purdue's transdermal microneedle patch
New technology may allow transdermal patches to pump out medication by harnessing the wearer's own body heat (Photo: Shutterstock)
Transdermal patches are currently used for the controlled release of medication, as long as that medication is made up of molecules that are small enough to be absorbed through the wearer’s skin. For solutions with larger molecules, scientists are looking into the use of patches incorporating arrays of skin-piercing microneedles. In many of these cases, however, the patches would require some sort of tiny battery-operated pump, to push the medication through the needles. Now, researchers from Indiana’s Purdue University have developed what could be an alternative – microneedle patches that use the wearer’s own body heat to deliver the drugs.
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