[Application of endoscopic functional surgery concept on middle ear surgery].

To summarize the experience of establishing middle ear ventilation in endoscopic middle ear surgery. A retrospective analysis was performed on the patients who have received a middle ear endoscopic surgery in our department from 2016 to 2018. The method of reconstructing middle ear ventilation was summarized. A total of 300 ears from 296 paitents were collected. Fourty six of the 300 patients had eustachian tube problems, 241 had problems of ventilation between epitympanum and mesotympanum, and 185 had need of ventilation cavity reconstruction. With the continuous expansile application of endoscopic technology in the ear surgery and the deepening understanding of otologists on both the surgical concept and the physiological function of the middle ear, the use of endoscopy can achieve the goal of removing lesions accurately and preserving or reconstructing the function on the premise of minimally invasion.