A Study of the Use of the Medtronic Pump and Codman Catheter to Give Chemotherapy to Patients With Colorectal Carcinoma or Cholangiocarcinoma

This study is being done to answer the following question: Is the combination of the Medtronic pump and the Codman catheter device a safe alternative to the C3000 Codman pump for delivering chemotherapy directly into the liver of patients with metastatic colorectal cancer or cholangiocarcinoma?