Microneedle devices for transport of molecules, including drugs and biological molecules, across tissue, are provided. The microneedle devices permit drug delivery or removal of body fluids at clinically relevant rates across skin or other tissue barriers, with minimal or no damage, pain, or irritation...http://www.google.es/patents/US20040106904?utm_source=gb-gplus-sharePatente US20040106904 - Microneedle array patch
