side of sheet 18 and resiliently press back towards endoscope 16 likewise flexible membrane 26 expands and folds yielding in the direction of arrow 34 toward the user side of sheet 18 opening 30 of resilient membrane 26 is chosen to be less than the smallest diameter endoscope to be used with the shield thus when endoscope 16 is inserted through opening 12 opening 30 of resilient membrane 26 stretchably closes upon and resiliently grasps the entire circumference of the tubular portion of endoscope 16 extending through opening 12 when opening 30 of resilient membrane 26 resiliently grasps the entire circumference of endoscope 16 resilient membrane 26 seals gaps between sheet 18 and endoscope 16 thereby tightly sealing shield 10 around endoscope 16 thus fluids are prevented from passing between sheet 18 and endoscope 16 by way of opening 12 and the user is protected from fluids which may splatter on the opposite side of shield 10 thus shield 10 is effectively a one piece full face screen with no gaps while a particular embodiment of opening 12 is shown it will be understood that shield 10 may be mounted on endoscope 16 by any type of opening which tightly seals shield 10 to endoscope 16 and permits no gaps through which fluids may pass furthermore it will be understood that the embodiment of opening 12 as shown is particularly advantageous in that endoscope 16 may be moved without impediment from one angle with respect to shield 10 to another angle with respect to shield 10 as may be convenient.