A combined electrical and chemical stimulation lead is especially adapted for providing treatment to intervertebral discs. The combination lead may be placed proximate to intervertebral disc cellular matrix and nucleus pulposus tissue to promote tissue regeneration and repair, as well as nociceptor and...http://www.google.com.au/patents/US7660634?utm_source=gb-gplus-sharePatent US7660634 - Combination electrical stimulating and infusion medical device
