METHOD FOR PERCUTANEOUS NEPHROLITHOTRIPSY WITHOUT USING X-RAY RADIATION Russian patent published in 2024 - IPC A61B1/307 A61B8/08 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to surgery and urology. With the patient lying on his/her back in Valdivia-Galdakao position, the assistant performs ureteroscopy with a rigid ureteroscope to the renal pelvis. Renal pelvicalyceal system (PCS) is filled with an irrigation fluid. Ultrasound scanning of the kidney is performed, and the location of the adjacent organs, the architectonics of the abdominal system of the kidney is determined, and the puncture path is selected. Percutaneous puncture approach into the abdominal system of the kidney is performed under ultrasound control, the selected kidney cup is punctured with the use of a puncture needle; an irrigation fluid is obtained when the puncture needle stylet is removed. Guide string with a soft tip is delivered through the puncture needle. Under the endoscopic control, the guide string tip is gripped by the basket, the string is delivered through the working channel of the ureteroscope and brought out, creating tension, the guide string is approached up to 16–26 Fr with subsequent installation of the Amplatz casing. Under the visual control of the ureteroscope, the depth of the plastic bougie and then the casing is determined. It involves nephrolithotripsy with fragmentation and removal of stone fragments. Upon completion of the nephrolithotripsy, the Amplatz casing is removed and a balloon nephrostomy drainage is installed along the guide string; the depth of the nephrostomy is controlled with an endoscopic ureteroscope.

EFFECT: method enables to reduce the length of the operation for the removal of urinary calculi, minimize the anaesthetic risk due to the absence of the need to perform the operation in the prone position or on the side, as well as perform the operation under regional anaesthesia without the need for intraoperative fluoroscopy, thereby excluding the effect of X-rays on both the patient and the medical personnel while providing the possibility of placing the ureter stent under visual control at the end of the surgical intervention.

3 cl, 1 ex