The stone retrieval balloon (platoid) is used in conjunction with flexible endoscope to extract the stones in bile duct, which can also provide lumen for inserting guide wire and injecting contrast agent
Disposable stone extraction basket (security wire) is used for the endoscopic removal of biliary stones and foreign bodies.
Nasal biliary drainage catheter is used for endoscopic gall-stone operation or bile drainage after cholecystectomy.
The swing sphincterotome is mainly intended for resection and coagulation to the duodenal papilla sphincter in the ERCP procedures. It is usually used in conjunction with the guide wire devices