ISOMED Gallstone Extractors are coded for ease of identification and are composed of X.R.O.polyurethane. The specially designed latex balloon are perfectly symetrical and fixed with two sutures. Gallstone extractors contain grading in centimeter from the distal end and reinforced with removable steel wire. They can be used in combination with 0.035" wire and available with or without a X.R.O. platinum ring.