Novel ureteral stent

Abstract

A novel ureteral stent used for drainage of a stoma of a ureter comprises an outer drainage part and an inner drainage part which are communicated with each other, wherein the inner drainage part adopts a tubular structure, and the outer drainage part adopts an eversible, folded and extended horn-shaped structure. The ureteral stent can effectively expand narrow ureter stoma, fully expand and support the lower ureter for urine drainage to effectively prevent upper urinary tract from infection and calculus generation, and bring convenience in stoma self-care of the patient; and related complication on the ureteral stent is obviously reduced, so as to greatly improve the life quality of the patient.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a ureteral stent used for ureterostomy drainage. Background technique [0002] Ureterostomy is one of the important surgical procedures for urinary diversion in patients with bladder cancer. For patients undergoing radical cystectomy and total renal ureterectomy on the affected side, ureterostomy on the healthy side is the best choice. However, ureterostomy is prone to complications such as infection, ischemia, necrosis, stenosis, and retraction, which brings pain to patients and increases medical expenses and economic burden. [0003] After traditional ureterostomy, a single J tube is routinely indwelled, and the indwelling time and replacement plan of the single J tube are even more different, but there are certain problems and deficiencies in all of them. Although a long single-J tube indwelling time is beneficial to improve drainage, those indwelling for more than ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the existing ureteral stent tube can not only expand and support drainage but also prevent infection and calculus formation, and cannot carry out home care, the present invention provides a new type of ureteral stent tube, which is based on the shape, length and drainage principle of the ureteral tube. Innovation can not only effectively dilate ureterostomy stenosis, fully expand and support the lower ureter and drain urine, but also effectively prevent upper urinary tract infection and stone formation, and can be easily performed by the patient himself or his family members. Home care and regular replacement

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