I recently had a stone removed that had been stuck in the tube, just below the kidney for over 3 months. My Doctors tried everything to get it to move, but it was so stuck that the utera was beginning to grow around the stone and was inflamed. My urologist put a stint in for three weeks (to let the area rest a bit) then went in and lasered the stone. After that another stint was put in. Three days later I was required to remove it myself. This worried me a bit and I did some research on the net but really couldn't find much information or photos.
When it came time to remove it, I prepared myself with two Doctor prescribed percocet pain pills, then waited an hour for them to take effect. Meanwhile I drank four very large glasses of cranberry juice. The plan was to get in the shower, then as I began to pull on the external surgical thread slowly try and urinate. With a slow steady pull it began to come out and I continued to pull it out until it was completely removed. There was very little pain, due in part to the two medications taken earlier. There was some blood and a several flakes of clotted blood but all went well.
I am not a Doctor but I am a researcher in another field and decided to include a photograph of what a stint looks like and how long mine was, which went from kidney to bladder. The "pigtails" on the ends keep the stint in place with one end in the kidney and the other in the bladder. The surgical thread which is black is connected to one end of the stint (the end in the bladder). The thread was 15 inches long (about 7 inches of that was outside the penis). The stint itself, uncoiled was also 15 inches long. It is soft and flexible. The image should give you a better idea of what a stint is and what it does. I also placed a one cent piece in the image so you can better judge the size. I hope this helps anyone reading this with an interest - as well as calming you down a bit if you are required to remove it yourself. Again, medicate yourself with your doctor prescribed drug an hour before removal and you should have no problems and little pain. Also, keep in mind that this entire removal procedure only took about 45 seconds. That's it. So quit worrying about it and relax.