A sphincter treatment apparatus includes an energy delivery device introduction member including a proximal end with a first radius of curvature and a distal end with a second radius of curvature. The introduction member is configured to be introduced into the sphincter in a non-deployed state and to...http://www.google.co.uk/patents/US7648500?utm_source=gb-gplus-sharePatent US7648500 - Sphincter treatment apparatus
