| 摘要 |
<p>A self-introducing infusion catheter (20) comprises a substantially rigid, elongate shaft (22) having a longitudinal passage therethrough and an infusion port (30) at its distal end (24). An electrode (28) is further mounted at the distal end. The electrode is electrically coupled to a connector (32) at the proximal end (26) of the shaft which may be connected to an electro-surgical power supply. The connector is further in communication with the passage (38) in the shaft and provides fluid connection with an infusion fluid delivery device. In the method of the invention, the ctheter is connected to an electro-surgical power supply and ablative energy is applied to abdominal tissue through the electrode. This facilitates penetration of the tissue to position the device in the abdominal cavity through the abdominal wall. The distal end of the catheter is positioned through an incision in a body structure, such as the cystic duct, and the proximal end is connected to an infusion fluid delivery device. The distal end is clamped in position in the duct, and an infusion fluid such as contrast medium is infused into the duct.</p> |
