Design and Application of Nasal Stents

Inclusion Criteria: 1. The subjects voluntarily participate in the experiment and sign the informed consent; 2. Age range from 18 to 70 years old, gender unlimited; 3. With nasal congestion as the chief complaint, CT of sinus suggested deviation of nasal septum with indications of surgery (deviation of nasal septum affects breathing and nasal congestion is serious; High nasal septum deviation affects sinus drainage or causes reflex headache; Nasal septum spine often causes nasal bleeding; Nasal septum deviation affects eustachian tube function); 4. No history of respiratory tract infection and nasal decongestant use within 1 month before the visit; 5. No other treatment was used; 6. ASA grade 1\~2; 7. Able to communicate well with researchers and follow the requirements of the experiment. Exclusion Criteria: 1. There are acute and chronic rhinosinusitis, nasal polyps, benign and malignant tumors and other nasal diseases; 2. History of craniocerebral and nasal surgery; 3. The results of preoperative coagulation function test exceeded 20% of the upper limit of normal value; 4. Patients known to be allergic to test instrument materials; 5. Pregnant or lactating women; 6. Other organoplastic or functional diseases complicated by the subjects limited their participation in the study and could not comply with the follow-up or affect the scientific integrity of the study; 7. Participants who have participated in other clinical trials within the last 1 month; 8. Participants considered unsuitable for this clinical trial for other reasons.