The nose operation hole                 Oxygen interface                                  Oral operating hole

             Features :

             1.To achieve continuous ventilation at the same time, can carry out painless gastroscopy. fiberoptic bronchoscopy , and so on it with more security.

             2. The mouth bite part is setted the oral operation hole, which can be used for the occlusion part of the sick population during operation, and can be used for the occlusal positioning of the patient in the      operation, so as to solve the problem that the endoscope is easy to be bitten .
            3. The nasal cavity is provided with a nasal cavity relative to the nostril , If the upper airway obstruction occurs in the endoscopic examination, fiberoptic bronchoscopy can be carried out through the nasal operating hole, and the nasopharyngeal airway will be inserted into the airway to assist breathing; The oral operation hole can be gastroscopy,、sputum aspiration.

              4. Sealing valve set, to further ensure the sealing performance of the mask

                         Specification：5#