My Father has Cancer and the hospital used the SorbaView 2000 on the stints they placed in his kidney's. They are a great product but unfortunately, I can't find them anywhere. They do have similar products on the market but they just don't do the job. He developed an infection and the tubes running out of his back are leaking a bit. This product is the only thing that we have found to use, that helps with the drainage. Please send me information on where I can buy more, I know how expensive these are and I have a prescription from the Doctor. I just can't find them at any of the local or specialty pharmacies. Jill W. Daughter of Patient