The electric field steering assembly is used to control the size and/or location of, and/or steer the position of, an electric field in a living creature. The assembly comprises a pulse generator or stimulator, at least one implanted lead coupled to the stimulator and having, at a distal end thereof,...http://www.google.com.au/patents/US5895416?utm_source=gb-gplus-sharePatent US5895416 - Method and apparatus for controlling and steering an electric field
