Topic: SpyGlass(R) Direct Visualization System
"The SpyGlass System can be used to guide visualization and accessory devices throughout the pancreatico-biliary system. Accessory devices can be used to diagnose and treat diseases such as cholangiocarcinoma, pancreatic cancer or pre-cancerous tissues. To date there have been more than 50 clinical studies published or presented on the SpyGlass System, and more than 15,000 cases have been performed with the device in the U.S. and Europe."
This link shows some video footage of the system.