A medical device and method for facilitating a surgery through a body opening is disclosed. The medical device includes a flexible member configured to be placed within the body opening so as to cover a portion of the body opening. The flexible member includes a distal end portion with a closed end, a proximal end portion with an open end and an elongate portion joining the proximal end portion and the distal end portion. The proximal end portion is configured to extend out of the patient's body opening to cover an area around and outside the patient's body opening.