A fluid operated retractor for use in surgery. The retractor has a portion which is expandable upon the introduction of fluid under pressure. The expandable portion is made of a material strong enough, and is inflated to enough pressure, to spread adjoining tissues within the body. The retractor is especially...http://www.google.fr/patents/US6277136?utm_source=gb-gplus-shareBrevet US6277136 - Method for developing an anatomic space
