Clinical Study on the Anesthetic Effect and Recovery Quality of Taliglide in Elderly Patients Undergoing Orthopedic Surgery

INTERVENTION: Tegileridine Group:Use Tegileridine Fumarate Injection as the main drug for postoperative pain relief;Control group:Use Sufentanil Injection as the main drug for postoperative pain relief; CONDITION: Postoperative pain PRIMARY OUTCOME: Postoperative pain NRS score; SECONDARY OUTCOME: Postoperative hospital stay;Postoperative recovery quality at 30 days;Delirium occurred within 5 days after the operation.;The adverse reactions related to pain relief within 48 hours after the operation;Sleep quality within 48 hours after the operation;Postoperative QoR‐15 score;The incidence of complications during hospitalization and within 30 days after surgery;The consumption of rescue analgesic drugs 48 hours after the operation.; INCLUSION CRITERIA: 1. Age >= 65 years; 2. ASA grade I ‐ III; 3. BMI 18.5 ‐ 29.9; 4. Scheduled for major orthopedic surgery under general anesthesia, with operation duration of 2 ‐ 6 hours; 5. Receiving postoperative patient‐controlled intravenous analgesia pump (PCIA) treatment; 6. Capable of reading and writing, and able to sign the informed consent form.