Single head concentric-circle-like double J tube

Abstract

The invention discloses a single head concentric-circle-like double J tube, and relates to the field of medical equipment. The single head concentric-circle-like double J tube comprises a polyurethane conduit with openings at both sides. Two end heads of the polyurethane conduit are respectively bent into a large elastic ring and a small elastic ring, wherein the large elastic ring and the small elastic ring are on an opposite side extension cord in the same plane. The conduit extending along the outer side of the small elastic ring is roiled from outside to inside to form a plurality of concentric-circle-like and spiral-shaped blocking rings at the same plane. When the conduit is wound to the center of the blocking rings, the conduit extends from the lower part of the blocking rings to the opposite side extension cord on the small elastic ring plane in an arc shape until the conduit is connected to the large elastic ring. Rings among a plurality of the concentric-circle-like spiral blocking rings are affixed to each other; the plane of the blocking rings is perpendicular to the plane of the small elastic ring. The single head concentric-circle-like double J tube can solve the problems that the stone existing in transurethral ureteroscope lithotripsy surgery treatment shifts to the renal pelvis, which leads to the fail of lithotripsy or instruments which block the stone to move upwardly occupy the lower inner space of the ureter, which hinders the mirror-inserting operation and causes the rushing difficulty of the lithotripsy, and it is difficult to achieve satisfactory effects.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a built-in single-headed concentric double-J tube used for preventing calculus displacement during laparoscopic lithotripsy for ureteral and renal calculi. Background technique [0002] With the advancement of uretero-nephroscopic technology and the application of holmium laser in urology, transurethral ureteroscopic holmium laser lithotripsy has become a routine urological surgery for stones in the ureter and kidneys. This kind of operation has the characteristics of non-invasive, definite effect, low cost, and easy popularization and application, so it is accepted by urologists and patients. However, stones in this kind of surgery are easy to shift to the renal pelvis and calices, which reduces the rate of stone crushing, especially for stones in the middle and upper ureters. After the stone crushing operation, the stones are loose, and the stones are easily displaced u...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a single-head concentric double J tube, which can solve the problem of inaccurate placement of the J tube and the blocking ring in the treatment of transurethral ureteroscopic lithotripsy, and it is difficult to fix and occupy the lower ureter. The operating space hinders the operation of entering the mirror and the difficulty of rushing out the gravel, making it difficult to achieve satisfactory results

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