A balloon apparatus adapted for sequential dissection of an anatomical space and associated methods are provided. The balloon apparatus comprises a tubular member having a lumen, a tunneling member slidably disposed in the lumen of the tubular member, a flattened substantially rectangular balloon sealed...http://www.google.fr/patents/US6328729?utm_source=gb-gplus-shareBrevet US6328729 - Colporrhaphy method and apparatus
