Anti-backflow ureteral stent

Abstract

The invention discloses an anti-backflow ureteral stent. The anti-backflow ureteral stent comprises a catheterization stent, one end of the catheterization stent is arranged in a kidney and penetrates through the urinary tract of a patient, the other end of the catheterization stent is arranged in the bladder of the patient, an anti-backflow one-way membrane set is arranged in the catheterization stent, and an expansion piece is arranged on one side of the one-way membrane set. Urine passes through the one-way membrane set in the catheterization stent and is discharged into the bladder through kidney support, the one-way membrane set enables the catheterization stent to keep unblocked through rigid cooperation of the one-way membrane set when the patient bends down and stands up, the urine synchronously passes through the expansion piece in the urine discharging process of the one-way membrane set, and the catheterization stent keeps dynamic fit with the urethra of the patient. According to the anti-backflow ureteral stent, the ureteral stent is controlled by the one-way membrane set in the catheterization stent to avoid backflow during use, and meanwhile, the problem that a ureter is narrowed or blocked due to extrusion when the patient bends down and stands up in daily life can be avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anti-reflux ureteral stent. Background technique [0002] Ureteral stents, also known as double J tubes, are widely used in urological surgery and are suitable for use in upper urinary tract operations such as kidney stones, ureteral stones, hydronephrosis, kidney transplantation, and dilation of ureteral strictures. After it is implanted in the ureter, one end of it is placed in the patient's kidney, and the other end is placed in the patient's bladder, which is used to drain the urine in the patient's kidney and small stones after lithotripsy into the bladder. The stent can play an important role in draining urine and preventing ureteral stenosis and adhesion blockage. [0003] However, in the actual use process, the patient will keep the ureteral stent in the body after the operation and leave the hospital. In daily life, the patient will squeeze the catheter later...

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Problems solved by technology

[0003] However, in the actual use process, the patient will keep the ureteral stent in the body after the operation and leave the hospital. In daily life, the patient will squeeze the catheter laterally due to sitting, lying down, etc., causing the catheter to be squeezed and narrowed or blocked. In order to solve this problem The problem is that steel wire springs are generally used to support the inner wall of the stent so that both ends are J-shaped, but the J-shaped stent at the kidney end and the end of the patient's urethra are stressed and rubbed against each other, which can easily cause hematuria and medical accidents

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