关键词: 帽檐Trocar, 经口腔前庭, 腔镜甲状腺手术

Abstract: Objective To explore the application of “hat brim trocar” in transoral endoscopic thyroidectomy vestibular approach （TOETVA）. Methods A total of 126 cases of TOETVA in our hospital from July 2019 to December 2020 were included in the study, in which 78 cases used self-made trocar （observation group） for creating a working space while 48 cases used the common suspension method （control group）. The time of the working cavity creation, bleeding volume and surgical results were compared. Results All operations were not transferred to open surgery. The self-made trocar group used 3 mmHg carbon dioxide low pressure, 10 mL/min low airflow, and the intraoperative space was all exposed. The auxiliary suspension method uses 6 mmHg, 20 ml/min air flow, and the working cavity creation time was longer than that of the Trocar group compared. There was no statistical differences in blood loss surgical complications, carbon dioxide partial pressure trocar group is better than suspension group. Conclusion The self-made trocar reduced the time of working space construction and operation steps, and reduce carbon dioxide accumulation.

Key words: transoral endoscopic thyroidectomy vestibular approach （toetva）, "hat brim trocar"