METHOD FOR SURGICAL CORRECTION OF URETHRAL NAVICULAR FOSSA STRICTURE Russian patent published in 2025 - IPC A61B17/00 A61B17/94 A61M25/01 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to surgical urology. Ligatures-holders are applied on the glans penis at 3 and 9 o'clock at 2 mm from an external urethral opening. Ligatures-holders are pulled, as a result of which the lumen of the external opening of the urethra is opened. Longitudinal dissection of a narrowed urethra is performed with a scalpel brought through an external opening of the urethra along the ventral surface at 6 o'clock. Dissected section of the urethra is calibrated with a metal urethral dilator 26ch. An endoscope with diameter of 4 mm introduced through an external urethral opening is used to assess the dissected urethra for endoscopic evaluation, and the size of the required flap is determined. Trapezoidal flap is taken from the inner surface of the lip. Performing haemostasis of the bed from which the flap was taken. Flap is prepared for fixation. Under endoscopic control, the proximal edge of the flap is fixed by suturing the urethra through the skin and soft tissues of the penis with an interrupted suture. Distal edge of the flap is fixed to an external opening of the urethra along a ventral semicircle with separate interrupted sutures. Lateral sides of the trapezoidal flap are fixed under endoscopic control to the edges of the dissected urethra by suturing through the skin and soft tissues of the penis with separate interrupted sutures. Middle of the flap is fixed with a single suture through the skin of the penis along the ventral surface. Urethral catheter is inserted into the bladder. Urethral catheter is removed, and independent urination is restored in 21 days from the day of operation.

EFFECT: method provides stable maintenance of the urethral lumen in the postoperative period, which is achieved by maximizing the blood supply to the urethra due to the absence separation of the latter, as well as by implantation of an autologous lip mucosa flap into the specified area, which has physiological resistance to the permanent effect of urine, limits the excessive formation of scar tissue in the reconstruction area, and also prevents its constrictive action; allows forming an adequate physiological passage of urine along the lower urinary tract and, as a result, improving the quality of life of the patients.

1 cl, 8 dwg, 1 ex