What should I do if the double J tube can't be pulled out after kidney stone surgery?

It is estimated that the stones in your ureter may not fall from the kidney, but may be formed by the direct adsorption of impurities by double J tubes.

Double J tube needs to be replaced in 3 months. If it is difficult to clear, it can be cleared by stages. Cystoscope was used for bladder, ureteroscope for ureter and percutaneous nephroscope for kidney. I hope it's not that much trouble.