JKN2306

Part 1 Multiple Ascending Dose (MAD) Phase for Patients Postoperatively Undergoing Laparoscopic Surgery: Primary Objective: To evaluate the safety and tolerability of multiple-dose administration of JKN2306 tablets in patients undergoing laparoscopic surgery. Secondary Objective: To evaluate the pharmacokinetic (PK) characteristics of multiple-dose administration of JKN2306 tablets in patients undergoing laparoscopic surgery. Exploratory Objectives: 1) To investigate the preliminary efficacy of multiple-dose administration of JKN2306 tablets in patients undergoing laparoscopic surgery; 2) To investigate the effects of JKN2306 on the activities of transporters or metabolic enzymes. Part 2: Dose-finding Phase for Patients Following Laparoscopic or Thoracoscopic Surgery: Primary Objective: To evaluate the efficacy of JKN2306 tablets in patients undergoing laparoscopic or thoracoscopic surgery. Secondary Objective: To evaluate the safety of JKN2306 tablets in patients undergoing laparoscopic or thoracoscopic surgery. Exploratory Objectives: 1) To investigate the preliminary efficacy of JKN2306 tablets in patients undergoing thoracoscopic or thoracoscopic surgery; 2) To explore the establishment of a population pharmacokinetic (popPK) model for JKN2306 in patients undergoing laparoscopic or thoracoscopic surgery.