A device positionable in an opening in a flexible membrane or in the lumen of a vessel having a flexible sidewall. The device distends or biases opposite portions defining the opening or forming the vessel sidewall outwardly in the plane of the device. The outward biasing draws opposing portions of the...http://www.google.es/patents/US7648532?utm_source=gb-gplus-sharePatente US7648532 - Tissue distention device and related methods for therapeutic intervention
Tissue distention device and related methods for therapeutic intervention
