Anti-reflux method capable of conducting automatic adjustment along with changes of bladder pressure, and ureteral stent

Abstract

The invention discloses an anti-reflux method capable of automatically adjusting along with the change of bladder pressure and a ureteral stent. According to the method, a water retaining soft sleeveis connected to an outlet of a bladder tube section of the stent; the water retaining soft sleeve in a urine storage period is in a free state, and urine in the renal pelvis enters the ureteral stentand is discharged into the bladder through the water retaining soft sleeve; and the water retaining soft sleeve covers the outlet of the bladder tube section under the pressure of the bladder during urination, and anti-reflux effect is achieved. According to the ureteral stent, the water retaining soft sleeve is arranged at the outlet of the bladder tube section, the water retaining soft sleeve inthe urine storage period is in the free state, and urine in the renal pelvis enters the ureteral stent and is discharged into the bladder through the water retaining soft sleeve; during urination, the water retaining soft sleeve covers the outlet of the bladder tube section under the action of bladder pressure; and after urination is finished, the bladder pressure is reduced, and the water retaining soft sleeve returns to a free state. Urine is prevented from reversely entering the ureteral stent by utilizing the covering and sealing effects of the soft water retaining soft sleeve on the urination opening of the ureteral stent, so the anti-reflux effect of the ureteral stent is realized.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anti-reflux method and a ureteral stent tube which are automatically adjusted according to changes in bladder pressure. [0002] technical background [0003] The current clinical use of ureteral stent is a kind of ureteral stent used for various reasons involving renal pelvis and ureter to prevent ureteral stenosis, anastomotic leakage, blood clots or stone blockage in the ureter, etc. Its two ends are usually curled, one end is located in the renal pelvis, the other end is located in the bladder, and the middle section is located in the ureter and is straight. There are different numbers of small side holes on the walls of the above-mentioned three sections to facilitate the drainage of urine. [0004] Since this ureteral stent (referred to as double J tube) is open in two directions, when the bladder contracts to urinate or the abdominal pressure increases, the urin...

AI Technical Summary

Problems solved by technology

When inserted from the renal pelvis through the ureter to the bladder, the elastic silicone membrane may be barbed, which will not only cause damage to the ureter, but also doubt whether the elastic silicone membrane can fully restore its original shape after entering the bladder

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