A surgical drape comprising, a sheet of flexible material resistant to the passage of bacteria for covering a portion of a patient's body, with the covering sheet having a fenestration for placement over a surgical site. The drape has an auxiliary sheet of flexible material resistant to the passage of...http://www.google.fr/patents/US4089331?utm_source=gb-gplus-shareBrevet US4089331 - Surgical drape with fenestration liner
