A wide-angle needle endoscope.
D002818:Cordotomy; D004558:Electric Stimulation; D004566:Electrodes; D019723:Endoscopes; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D008161:Lumbosacral Region; D008722:Methods; D009339:Needles; D010148:Intractable Pain / Q000601:surgery; D013115:Spinal Canal; D013116:Spinal Cord