A medical device includes an actuator handle, an elongate flexible inner tubular member operatively connected at one end to the handle, two jaws pivotably mounted to a distal end of the inner tubular member and biased to an open configuration, and an elongate flexible outer tubular member operatively connected at one end to the handle and slidably surrounding the inner tubular member. The outer tubular member is provided at a distal end with two cutouts or open slots opposed to one another to define a pair of longitudinally extending opposed fingers. The fingers are engageable with respective ones of the jaws to pivot the jaws towards one another during a distally directed stroke of the outer tubular member so that the jaws assume a closed configuration. The cutouts or open slots are disposed alongside the jaws in the closed configuration thereof to provide clearance for tissue material grasped in and protruding laterally from the jaws.