You obtain a set of dilators. Believe it or not you can get them from Amazon. Basically you start one number (size) under whatever number your surgeon dilated to, then go to the number they used. Simple as that. You do that until the surgeon tells you the stricture will stay opened. This should not be done unless you are first dilated by your surgeon or a GI doc. The reason being your spincter muscle is right around the area you are trying to open up.
Aimee