A Clinical Study of Remimazolam Tosilate in Patients Undergoing Bronchoscopy

Inclusion Criteria: 1. 18\~80 years, female or male 2. Patients scheduled for an bronchoscopy procedure 3. 18 kg/m2\<BMI\<30kg/m2 4. Patients understand clearly and participate in the study voluntarily, and sign the informed consent Exclusion Criteria: 1. Patients scheduled for emergency surgery 2. Patients with a history of drug abuse and / or alcohol abuse 2 years prior to the screening period 3. One or more of the laboratory findings fall out of the limitations for this study(platelet,hemoglobin,aspartate aminotransferase,etc.); 4. Pregnant women or those in lactation period 5. Allergic to drugs used in the study 6. Patients have participated in other clinical trial within the 3 months prior to randomization 7. Any patient judged by the Principal Investigator (PI) or Sub-Investigator to be inappropriate for the subject for any other reason