Hearing quality restored with bionic ear technology used for gene therapy | e! Science News

What a novel use of electric current from a cochlear implant - use it to achieve targeted delivery of neurotrophins by electroporation - cool. 

http://esciencenews.com/articles/2014/04/23/hearing.quality.restored.with.bionic.ear.technology.used.gene.therapy

Electroporation sounds like a tricky process to achieve the right voltage that doesn't fry the cell: http://en.m.wikipedia.org/wiki/Electroporation