Morphine group (M):At the end of surgery, morphine 3mg was administered intravenously and connected to patient-controlled intravenous analgesia pump (morphine 100mg, normal saline 100ml, concentration

Evaluation of the clinical effect of tegileridine fumarate injection for postoperative analgesia after video-assisted thoracoscopic surgery: a single-center, randomized, double-blind, positive controlled study

Effect of tegileridine fumarate injection on gastrointestinal function recovery after laparoscopic myomectomy: a single-center, randomized, double-blind, positive controlled study