The invention includes a system and method for reducing the approximation of wound edges of a stricture that affects a cross-sectional area of a lumen in a mammal. The system includes a body defining a passageway for fluid flow. The body is positionable in the lumen. The system also includes a separating...http://www.google.es/patents/US7651529?utm_source=gb-gplus-sharePatente US7651529 - Stricture retractor
