A ureteral end-to-side anastomosis using a stent tube

Abstract

The present invention discloses a stent tube for use in ureteral end-to-side anastomosis, comprising a single-J tube, a transition joint being arranged at one end of the single-J tube, an inlet being arranged at the upper end of the transition joint, and two outwardly protruding outlets being symmetrically arranged and connected to the inlet being arranged at the lower end, a mounting groove being arranged at the lower end of the transition joint between the two outlets, a spring sheet being embedded in the mounting groove, the upper end of the spring sheet being matched with the mounting groove, and two independent positioning spring sheets extending from the lower end, two hoses being respectively connected to the two outlets, slots being arranged at opposite sides of the two hoses, and two positioning spring sheets being respectively matched with corresponding slots, and when the two positioning spring sheets are both located at the first station, the two positioning spring sheets are parallel to each other, and when the two positioning spring sheets are located at the second station, the two positioning spring sheets are respectively bent outwards.

Description

Technical Field

[0001] The invention relates to a stent tube, in particular to a stent tube used for ureteral end-to-side anastomosis. Background Art

[0002] Duplicated kidney is a common congenital malformation of the urinary system in children. The literature reports that its incidence is about 0.8%. Duplicated kidney malformation has various morphologies and great changes in renal function. Therefore, children with duplicated kidney should develop individualized treatment plans. It is also one of the more difficult congenital malformations faced by pediatric urologists. Duplicated kidney malformation is a variety of renal dysplasia and renal pelvis and ureteral dilatation, among which the upper kidney is the most common. In the past, doctors used the upper kidney and its collecting system resection to treat such children. Recently, there have been reports of ureteral end-to-side anastomosis to treat upper hydronephrosis with ureteral dilatation. In the early 20th century, Foley first reported the use of ureteral end-to-side anastomosis to treat duplicated kidney malformation. With the advancement of surgical technology and the deepening of the understanding of this procedure, foreign scholars have continued to use ureteral end-to-side anastomosis to treat complete duplication of kidney malformation. At the same time, the number of related foreign literature reports has increased compared with the past.

[0003] After ureteral end-to-side anastomosis, the two ureters are Y-shaped. In the past, double J tubes were placed in the normal renal pelvis at one end and the bladder at the other end. There are also literatures that place one end of the double J tube in the abnormal renal pelvis and the other end in the bladder. These two types of stents can only drain the upper or lower kidney. Complications such as anastomotic stenosis or poor drainage of the normal half of the kidney often occur. Summary of the invention

[0004] The technical problem to be solved by the present invention is, in view of the shortcomings of the above-mentioned prior art, a stent tube for use in ureteral end-to-side anastomosis is proposed, including a single J tube, a transition joint is provided at one end of the single J tube, an inlet is provided at the upper end of the transition joint, and two symmetrically arranged and outwardly protruding outlets connected to the inlet are provided at the lower end, a mounting groove is provided at the lower end of the transition joint between the two outlets, a spring sheet is embedded in the mounting groove, the upper end of the spring sheet cooperates with the mounting groove, and two independent positioning spring sheets extend from the lower end, two hoses are respectively connected to the two outlets, slots are provided on the opposite sides of the two hoses, and the two positioning spring sheets are respectively matched with the corresponding slots, when the two positioning spring sheets are both located in the first station, the two positioning spring sheets are parallel to each other, and when the two positioning spring sheets are located in the second station, the two positioning spring sheets are respectively bent outwards.

[0005] In the technical solution, a transition joint is provided at one end of the single J tube, and two hoses are connected by the transition joint. At the same time, the spring sheet has the characteristic of two working positions, so that a "Y"-shaped structure can be formed between the single J tube and the two hoses, and the two hoses can be inserted into the abnormal renal pelvis and the normal renal pelvis respectively, and then connected to the bladder. The spring sheet can play a supporting role, and can keep the hose in a certain shape to ensure smooth drainage. At the same time, the structural defects of the double J tube are solved, and complications such as anastomotic stenosis or poor drainage of the normal half kidney caused by the use of the double J tube are avoided, which is beneficial to the patient's recovery.

[0006] The technical solution further defined by this technical solution is:

[0007] The aforementioned ureteral end-to-side anastomosis uses a stent tube, the hose is semicircular, and the two slots are symmetrical with the center line of the transition joint. The hose is arranged in a semicircular shape, so that when the two positioning springs are located in the first position, the two hoses can form a complete hose that is approximately circular, which can facilitate insertion and removal, while avoiding damage to cell tissue, reducing secondary injuries, and improving safety and reliability.

[0008] The aforementioned ureteral end-to-side anastomosis uses a stent tube. When the two positioning spring pieces are located at the second position, the angle between the two positioning spring pieces is 10-60°.

[0009] The aforementioned ureteral end-to-side anastomosis uses a stent tube. When the two positioning springs are both in the first position, the two positioning springs are parallel to each other, and the maximum diameter of the circle formed by the two hoses is less than or equal to the outer diameter of the single J tube. This avoids the generation of steps, facilitates insertion and removal, and avoids damage to cell tissue, reduces secondary injuries, and improves safety and reliability.

[0010] The aforementioned ureteral end-to-side anastomosis uses a stent tube, and a plurality of side holes for fluid inlet or outlet are provided on the single J tube and the two soft tubes, so as to avoid blockage and keep drainage unobstructed.

[0011] The beneficial effects of the present invention are as follows: by providing a transition joint at one end of the single J tube and connecting two hoses through the transition joint, and by utilizing the characteristic of the spring sheet having two working positions, a "Y"-shaped structure can be formed between the single J tube and the two hoses, and the two hoses can be respectively inserted into the abnormal renal pelvis and the normal renal pelvis, and then connected to the bladder, the spring sheet can play a supporting role, and can keep the hose in a certain shape to ensure smooth drainage, and at the same time solve the structural defects of the double J tube, avoid complications such as anastomotic stenosis or poor drainage of the normal half kidney caused by the use of the double J tube, and be beneficial to the patient's recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure when the two positioning spring pieces are both located at the second working position in the present invention;

[0013] Figure 2 It is a schematic diagram of the structure when the two positioning spring pieces in the present invention are both located at the first working position;

[0014] Figure 3 and Figure 5 All are the main views of the transition joint;

[0015] Figure 4 and 6 They are Figure 3 Medium AA, Figure 5 Cross-sectional view of the middle BB;

[0016] Figure 7 It is the axial view of the transition joint;

[0017] Figure 8 It is a structural schematic diagram of the hose;

[0018] Fig. 9 It is a structural schematic diagram of the present invention;

[0019] Among them: 1-single J tube, 2-transition joint, 3-inlet, 4-outlet, 5-installation groove, 6-spring, 7-positioning spring, 8-hose, 9-slot, 10-side hole. DETAILED DESCRIPTION

[0020] Example 1

[0021] The present embodiment provides a stent tube for ureteral end-to-side anastomosis, comprising a single J tube 1, a transition joint 2 being provided at one end of the single J tube 1, an inlet 3 being provided at the upper end of the transition joint 2, and two outwardly protruding outlets 4 being symmetrically arranged and connected to the inlet 3 being provided at the lower end, a mounting groove 5 being provided at the lower end of the transition joint 2 between the two outlets 4, a spring piece 6 being embedded in the mounting groove 5, the upper end of the spring piece 6 being matched with the mounting groove 5, and two independent positioning spring pieces 7 extending from the lower end, two hoses 8 being respectively connected to the two outlets 4, slots 9 being provided at opposite sides of the two hoses 8, two positioning spring pieces 7 being respectively matched with corresponding slots 9, when the two positioning spring pieces 7 are both located at the first station, the two positioning spring pieces 7 are parallel to each other, and when the two positioning spring pieces 7 are located at the second station, the two positioning spring pieces 7 are respectively bent outwards;

[0022] The hose 8 is semicircular, and the two slots 9 are symmetrical with the center line of the transition joint 2; when the two positioning springs 7 are located at the second position, the angle between the two positioning springs 7 is 30°, and side holes 10 for liquid inlet or outlet are provided on the single J tube 1 and the two hoses 8, so as to avoid blockage and keep the drainage unobstructed;

[0023] When the two positioning spring pieces 7 are both located at the first station, the two positioning spring pieces 7 are parallel to each other, and the maximum diameter of the circle formed by the two hoses 8 is equal to the outer diameter of the single J tube 1. In this way, when the two positioning spring pieces are located at the first station, the two hoses can form a complete hose that is approximately circular, which can facilitate insertion and removal while avoiding damage to cell tissue, reducing secondary injuries, and improving safety and reliability. The connection method between the transition joint and the single J tube and the hose is bonding, which not only ensures sealing but also has low cost.

[0024] The working process of this embodiment is as follows: during the operation, the doctor first inserts the single J tube into the bladder, and then inserts the two flexible tubes at the other end into the abnormal renal pelvis and the normal renal pelvis respectively. At the same time, the two positioning spring pieces are located at the second working position, and the two positioning spring pieces are bent outward at a certain angle respectively, and the angle is similar to the angle formed by the abnormal renal pelvis and the normal renal pelvis.

[0025] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A stent tube for ureteral end-to-side anastomosis, comprising a single J tube (1), characterized in that: A transition joint (2) is provided at one end of the single J tube (1); an inlet (3) is provided at the upper end of the transition joint (2); and two symmetrically arranged outlets (4) are provided at the lower end and are connected to the inlet (3) and protrude outward. A mounting groove (5) is provided at the lower end of the transition joint (2) between the two outlets (4); a spring sheet (6) is embedded in the mounting groove (5); the upper end of the spring sheet (6) cooperates with the mounting groove (5); and two independent positioning spring sheets (7) extend from the lower end. Two hoses (8) are respectively connected to the two outlets (4); and the two hoses (8) are opposite to each other. One side is provided with a slot (9), and two positioning springs (7) are respectively matched with the corresponding slots (9); when the two positioning springs (7) are located at the second working position, the two positioning springs (7) are respectively bent outwards, and the angle between the two positioning springs (7) is 10-60°; when the two positioning springs (7) are both located at the first working position, the two positioning springs (7) are parallel to each other, and the maximum diameter of the circle formed by the two hoses (8) is less than or equal to the outer diameter of the single J tube (1); the hose (8) is semicircular, and the two slots (9) are symmetrical with the center line of the transition joint (2).

2. The ureteral end-to-side anastomosis using a stent tube according to claim 1, characterized in that: The single J-tube (1) and the two hoses (8) are both provided with a plurality of side holes (10) for liquid inlet or liquid outlet.

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