Apparatus and techniques to address the problems associated with lead migration, patient movement or position, histological changes, neural plasticity or disease progression. Disclosed are techniques for implanting a lead having therapy delivery elements, such as electrodes or drug delivery ports, within...http://www.google.com.au/patents/US6795737?utm_source=gb-gplus-sharePatent US6795737 - Techniques for positioning therapy delivery elements within a spinal cord or a brain
