A sterile drape for selectively performing an expanded surgical procedure comprising, a flexible main sheet having a lower surface facing toward a patient after placement of the drape, and an upper surface facing away from the patient after placement of the drape. The drape has a fenestration of a sufficient...http://www.google.es/patents/US4024862?utm_source=gb-gplus-sharePatente US4024862 - Drape for expanded surgical procedure
