An auxiliary cavity expanding device for an operation which may prop up a body portion for laparoscopic surgery in order to make space for the performance of the operation includes a plurality of stays and a stay sleeve. The stays are secured to a stay end tube and an end of each stay is...http://www.google.fr/patents/US5678572?utm_source=gb-gplus-shareBrevet US5678572 - Cavity expanding device for laparoscopic surgery
