A sphincter treatment apparatus has an introducer means including a distal portion means. An expandable device means includes a plurality of arm means. Each arm means of the plurality has a distal section means and a proximal section means. Each of distal sections means of the arm means are coupled and...http://www.google.fr/patents/US6749607?utm_source=gb-gplus-shareBrevet US6749607 - Apparatus to treat esophageal sphincters
