Traditional chemotherapy is mainly administered intravenously, which is prone to local necrosis due to extravasation of chemotherapeutic drugs, and long-term intravenous chemotherapy can lead to venous occlusion, thus making it impossible to administer chemotherapy again. Arterial cassette implantation is to use percutaneous puncture to place the cassette catheter into the tumor blood vessels to establish a long-term intravascular drug delivery route via arteries. Compared with intravenous chemotherapy, it has the advantages of less trauma, high local drug concentration in the tumor, improved efficacy of chemotherapy drugs and mild systemic side effects. The effect of chemotherapeutic drugs on tumors is positively related to the concentration and time of drug contact with the lesion. Because tumor cells proliferate faster than normal cells and require more blood and oxygen supply, tumor tissues are rich in blood vessels and the blood flow is relatively slow, so the arterial cartridge implantation can make the drug enter tumor tissues directly, which can reach high concentration and fully act with tumor tissues and be absorbed and metabolized by tumor tissues to inhibit or kill tumor cells. It can also design the best treatment plan according to the law of tumor chemotherapy, which can improve the efficacy and enhance the controllability of intra-arterial chemotherapy infusion treatment. To sum up, arterial cartridge system implantation has the following advantages: 1. high concentration of drugs can be released directly to the tumor area to avoid intravenous systemic administration and drug dilution, so the drug concentration is high, targeted and effective; 2. the implanted cartridge can be used repeatedly for many times, a large number of drugs can be infused for a long time, and the drug can be administered slowly and continuously with better efficacy than one-time administration; 3. less complications, high safety, wide indications, and can significantly improve the patient’s survival quality and the effectiveness of chemotherapy. 4.The drug is metabolized by the liver after entering the liver, and most of the drugs are metabolized when they pass through the liver circulation for the first time, so that the drug concentration in the body circulation is lower and the toxic reactions are lighter, which can be tolerated by most patients, and the cost is low and easily accepted by patients; 5.The cartridge can be used for infusion, drip, embolization (with ultra-liquidated iodine oil), imaging, etc.; 6.Installation of the cartridge The operation is simple and easy, less time consuming, minimally invasive, well tolerated by patients, less painful, and free to move. Indications: middle and late stage pancreatic cancer, liver metastasis, colorectal cancer liver metastasis, extensive metastasis in the abdominal cavity that cannot be removed surgically, etc.