We've seen some electronic devices that promise to cure migraines in the past, but NuPathe's Zelrix patch certainly seems to be among the most practical, and it's just gotten one step closer to the US market. The company recently announced that the FDA has accepted its filing for a New Drug Application, and it says it now has a target date of August 29, 2011 for the FDA to complete its review. As for the patch itself, it's a single-use patch that relies on a mild electrical current to "actively transport" the anti-migraine drug sumatriptan through the skin using a process called iontophoresis. Th