Efficacy and Safety of HAIC in Combination With TQB2868 and Ramucirumab for Second-line Treatment of Advanced Hepatocellular Carcinoma

The patient will receive combined treatment with HAIC, TQB2868, and Ramucirumab. After enrollment, the patient will undergo routine hepatic artery angiography via femoral artery catheterization and placement of a hepatic artery catheter，they will then receive 150ml of 5% sodium bicarbonate + Oxaliplatin (85mg/m2) for 4-6 hours + Raltitrexed (2mg/m2) for 2-4 hours . This will be done every 3-4 weeks for at least 2 cycles. Systemic treatment will be administered every 21 days, with TQB2868 injection given on the first day of each cycle (1-7 days after HAIC). The fixed dose of TQB2868 will be 300mg, and Ramucirumab will be given at a dose of 500mg (initial intravenous infusion for 60 minutes, followed by 30 minutes if tolerated).