By Thomas Lee

There’s a fine line between the nose and the brain. Actually, it’s called the olfactory nerve, which researchers believe can serve as an ideal way to deliver drugs to the central nervous system.

White Bear Lake, Minn.-based start-up MedInvent LLC hopes to ride the strong initial sales of its NasoNeb drug delivery device for sinusitis sufferers to eventually target neurological diseases such as Alzheimer’s and epilepsy.