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[TITANIUM NICKELIDE TECHNOLOGIES IN MINIMALLY INVASIVE SURGERY OF KIDNEY AND UPPER URINARY TRACT].

The most common pathology of the kidney and upper urinary tract includes nephrolithiasis, ureteral strictures and renal cysts. In the treatment of patients with these diseases, the majority of surgeons prefer minimally invasive techniques, including endoscopic surgery. The complication rate of percutaneous surgery is a major factor in encouraging the search for new treatments. We have analyzed the results of 402 x-ray-endoscopic operations performed with the use of technologies based on titanium nickelide materials in patients with nephrolithiasis, ureteral strictures and kidney cysts. The high effectiveness and reliability of porous titanium nickelide cryoapplicator was noted in control of percutaneous channel bleeding and prevention. The proposed suspension nephropexy with fine titanium granules in coexisting nephrolithiasis and nephroptosis demonstrated 1.5 times greater effectiveness compared to the traditional nephropexy, reducing duration of nephrostomy and rehabilitation by almost 3 times. The proposed methods of intubation by permanent and temporary stents with shape memory after percutaneous ureteropelvic junction stricture correction are promising in the treatment of patients with this pathology of the upper urinary tract. Application of titanium nickelide implants in simple renal cyst surgery has led to a significant increase in the effectiveness of these operations, improvement in long-term results and patients' quality of life.