Effect of Transauricular Vagus Nerve Stimulation for Postoperative Analgesia following Arthroscopic Shoulder Surgery

INTERVENTION: Control group (pseudo‐stimulation):Percutaneous stimulation of the ear vagus nerve;Observation group (real stimulus):Percutaneous vagus nerve stimulation; CONDITION: Arthroscopic Shoulder Surgery PRIMARY OUTCOME: Total dosage of sufentanil within 24 hours after surgery; SECONDARY OUTCOME: Total dosage of remifentanil used during the operation;VAS;The number of patients receiving rescue analgesia; INCLUSION CRITERIA: 1. Adults, regardless of gender; 2. ASA grade I ‐ II; 3. Patients scheduled for arthroscopic shoulder surgery.