The utility model relates to an extractor is organized in excision of expansible formula minimally invasive surgery, it includes outer sheath pipe, the structure is retrieved to interior sheath pipe, the sheath pipe sets up in outer sheath pipe in its characterized in that, the intraductal recovery structure that sets up of interior sheath, the outer sheath pipe front end is the expansible part, and interior sheath pipe front end bore is big than the rear end bore, retrieves the structure and includes recovery bag, and exhausting line, exhausting line connect to go into recovery bag edge control recovery bag's switching, recovery bag set up with interior sheath pipe front end heavy -calibre position, interior sheath pipe heavy -calibre part corresponds with outer sheath pipe front end expansible partial position, still set up the endoscope in the outer sheath pipe, the endoscope sets up in the rear end of interior sheath mouth of pipe footpath major part. Pass through outer sheath pipe during the use and will retrieve structure and endoscope and introduce internally, wait to retrieve the structure and open the back, open outer sheath pipe front end expansible part after, to introduce the operation position with the expansible department that the endoscope passes through outer sheath pipe. This extractor can realize retrieving the introduction of structure and endoscope through an opening.