Wow I no longer feel alone. The same thing happened to me . I had been having problems since October 2009 and finally on December 21, 2009 my doctor let me know that at some time he punctured the tubing. I am so confused , hurt. I am waiting to see if my insurance will pay for the revision surgery but even then I don't know how I will come up with the deductible and copay(5500 total).