Endoscopic biliary stone extraction is the standard way of removing a concomitant bile duct stones in patients suffering from gallstone disease prior to laparoscopic cholecystectomy.
The typical instrument used to catch,trap and remove the biliary stone is a Basket(pic.).
The usual size that ensure success is when the stone is less than 1cm...for a stone bigger than 1 cm,technically,its more difficult for the basket to negotiate the stone for trapping..
The usual stone type that is successfully removed is the soft,pigmented type with less cholesterol content....since the stone is softer and easily crushable
A modified basket called a Lithotriptor can crush a harder stone since it has a stronger force in the structure and design of the instrument
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