Ureteral stent special for kidney transplantation

Abstract

The invention discloses a ureteral stent special for kidney transplantation. The ureteral stent comprises a stent body, a first curly tube, a tube opening, an intercepting tube, a second curly tube, aguide tube, a bent guide wire, a through hole, a protrusion, an intercepting tube wall, a limiting block, a rubber ring, a round hole, an intercepting cavity, a water blocking ball, a mounting cap and an elastic supporting body. The bent guide wire is made of a plastic material, so that the second coiled tube can be stably fixed in a renal pelvis of a transplanted kidney, the protrusions are allrubber protrusions and can block calculus particles, the stent body is made of a medical silica gel material, the water blocking ball is matched with the round hole, and the stent body is made of a medical silica gel material. The diameter of the water blocking ball is larger than the maximum diameter of the round hole, the phenomenon of urine backflow is prevented conveniently, the smooth layer is arranged in the stent body, a smooth inner surface is provided for the ureteral stent conveniently, smooth passing of fluid is facilitated, and the smoothness of an inner cavity of a tube body of the ureteral stent is improved.

Description

technical field [0001] The invention relates to a ureteral support, in particular to a special ureteral support for kidney transplantation, and belongs to the technical field of medical equipment. Background technique [0002] Ureteral stent is an indispensable medical consumable in urology. It is widely used in the field of urology. It is a commonly used technical tool in the treatment of various benign and malignant urinary system diseases. During the operation of tumor, hydronephrosis, kidney transplantation and other operations. Kidney transplantation refers to a treatment method that transplants a healthy donor kidney to a recipient with kidney disease or loss of kidney function. With the advancement of transplantation technology, the number of kidney transplant operations is also increasing year by year. Patients with end-stage renal disease offer hope. In kidney transplantation, in addition to the necessary anastomosis of renal arteries and veins, ureteral reconstru...

AI Technical Summary

Problems solved by technology

[0004] 1) The risk of stenosis and hemorrhage can be reduced after the ureteral stent is placed in the kidney transplant recipient, but there is also a problem, that is, most of the stents currently used in clinical practice are basically through-tubes

In normal humans, there is an anti-reflux mechanism from the ureter to the bladder. When the ureteral stent is placed, the anti-reflux structure will be destroyed. When the patient urinates or holds back the urine, the pressure in the bladder will suddenly increase, causing urine reflux. Backflow to the kidney, causing low back pain in patients, may also increase the risk of early urinary tract infection, and affect the recovery after kidney transplantation;

[0005] 2) After kidney transplantation, the ureteral stent usually needs to be placed for a long period of time, but the existing ureteral stent material will often form small stones on the outer wall of the ureter after being placed in the human body for a long time, and even stones will wrap around the ureter, resulting in The stent is not easy to pull out, or when the stent is pulled out, there are residual small stones that cannot be pulled out together with the stent and remain in the ureter, resulting in secondary ureteral obstruction and urinary tract infection

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