Double-J tube for ureter end-side anastomosis

Abstract

A double-J pipe for ureter end side anastomosis comprises elbow pipes arranged at the two ends, a supporting pipe arranged in the middle and a connecting pipe connected with the two ends of the supporting pipe and the two elbow pipes respectively, and the elbow pipes and the supporting pipe are each provided with a plurality of drainage holes communicating the inner wall and the outer wall. The double-J tube for ureter end-side anastomosis is an integrated hose, is low in manufacturing cost and convenient in surgical operation, can effectively reduce surgical difficulty and shorten surgical time, and is favorable for reducing surgical risks and better protecting patients; meanwhile, the double-J tube can better maintain the tube diameter, and the elbow tubes at the two ends can be effectively positioned in the kidney and the bladder, so that the drainage speed and the use stability are ensured, and the operation quality is greatly improved.

Description

Technical Field

[0001] The utility model relates to a medical device, in particular to a double J tube structure used for ureteral end-to-side anastomosis. Background Art

[0002] The double J tube, also known as the ureteral stent, is a stent that is implanted in the ureter to drain urine and prevent ureteral stenosis and adhesion blockage. During surgery, the double J tube is inserted into the ureter and the two ends of the double J are positioned in the kidney and bladder respectively to help urine flow from the kidney to the bladder and relieve ureteral obstruction.

[0003] As we all know, there are two kidneys in the human body, one on the left and one on the right. Each kidney is connected to the bladder through a ureter. In the case of duplication of kidney, there may be 3-4 ureters. If irreparable distal ureteral obstruction is caused by renal and ureteral duplication, ureteral patency or radiation damage, the ureter connected to the diseased kidney or the necrotic or diseased ureter needs to be partially removed, and the remaining ureter is connected to another ureter through end-to-side anastomosis, so that the two ureters are merged into one ureter connected to the bladder.

[0004] At present, there are disadvantages such as difficult surgery, complicated operation and high surgical risk for ureteral end-to-side anastomosis. The Chinese invention patent application with patent publication number CN110251810A proposes a stent tube for ureteral end-to-side anastomosis, which uses a transition joint with a spring clip to connect two hoses at one end of a single J tube. During the operation, the single J tube is inserted into the bladder, and the two hoses are respectively inserted into the abnormal renal pelvis and the normal renal pelvis, while ensuring that the two positioning spring clips are located at the required position and are bent outward at a certain angle, so that the ureter forms a specific Y shape, thereby ensuring smooth ureteral drainage. Although this stent tube can basically meet the surgical needs of duplicate kidneys, its surgical operation is complicated and its structure is too complicated, especially the transition joint connecting the single J tube and the two hoses, which needs to be provided with a mounting groove and two spring clips at one end with two outlets, and the diameter of the outlet end is very small, resulting in the inability to insert a guide wire through the transition joint, and it is also impossible to pre-insert the ureter through a cystoscope, and there are also difficulties and risks when removing the stent tube. Utility Model Content

[0005] The purpose of the utility model is to provide a double J tube for ureteral end-to-side anastomosis with a simple structure, convenient operation and good supporting and drainage effects, so as to reduce the difficulty and cost of production, improve the convenience of operation and feasibility of use, and ensure the supporting and drainage effect in the ureter after ureteral end-to-side anastomosis surgery.

[0006] The double J tube for ureteral end-to-side anastomosis described in the utility model comprises elbow tubes arranged at both ends, a support tube arranged in the middle, and the support tube is bent, and connecting tubes respectively connecting the two ends of the support tube and the two elbow tubes, and the elbow tube and the support tube are respectively provided with a plurality of drainage holes connecting the inner and outer walls.

[0007] Furthermore, the elbow pipes at both ends are bent and extended from the ends of the two connecting pipes in opposite rotation directions.

[0008] Furthermore, the end of the elbow pipe is closed, and a plurality of drainage holes with diameters smaller than the diameter of the elbow pipe are opened on the elbow pipe.

[0009] Furthermore, the support tube is U-shaped, and two connecting tubes are connected to the two ends of the U. The U-shaped tube is a soft tube, which can be straightened when the guide wire passes through, and bends and resets under the action of elasticity after the guide wire is withdrawn; the angle of the U-shaped support tube relative to the connecting tube can be set according to actual needs.

[0010] Furthermore, the support pipe includes a clamping pipe section in a major arc shape, and a perforated pipe section connecting the clamping pipe section and the connecting pipe.

[0011] The double J tube for ureteral end-to-side anastomosis described in the utility model is divided into five sections in sequence, the tube sections at both ends are elbow tubes, the middle tube section is a support tube, and the tube section connecting the elbow tube and the support tube is a connecting tube. After the ureteral end-to-side anastomosis operation, the elbow tubes at both ends of the double J tube for ureteral end-to-side anastomosis are positioned in the kidney and bladder through the setting of their curved shapes, and the support tube is inserted into the end of another ureter through the incision in the middle of the normal ureter, which plays a supporting role on the one hand and a diversion role through the drainage holes thereon on the other. The double J tube for ureteral end-to-side anastomosis is an integrated soft tube with low manufacturing cost and convenient surgical operation. It can effectively reduce the difficulty of surgery and reduce the operation time, which is beneficial to reducing the risk of surgery and better protecting patients. At the same time, the double J tube can better maintain the tube diameter, and the elbow tubes at both ends can also be effectively positioned in the kidney and bladder, thereby ensuring the drainage speed and stability of use, greatly improving the quality of surgery. When the stent tube needs to be removed after surgery, even if the support tube is embedded in the granulation tissue of the surgical anastomosis, the stent tube can be straightened by stretching and smoothly removed through a cystoscope, avoiding the occurrence of incarceration, thereby improving the convenience of stent tube removal and reducing harm to patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of a double J tube for ureteral end-to-side anastomosis.

[0013] Figure 2 It is a schematic diagram of the local structure of a double J tube used for ureteral end-to-side anastomosis.

[0014] Figure 3This is a schematic diagram of the use of a double J tube for ureteral end-to-side anastomosis. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] If there are descriptions involving "first" or "second" in the embodiments of the utility model, the descriptions of "first" or "second" are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0018] The utility model provides a double J tube for ureteral end-to-side anastomosis.

[0019] The double J tube for ureteral end-to-side anastomosis of this embodiment includes elbow tubes 1 arranged at both ends, a support tube 2 arranged in the middle, and the support tube is bent, and a connecting tube 3 respectively connecting the two ends of the support tube and the two elbow tubes, and the elbow tube and the support tube are respectively provided with a plurality of drainage holes 4 connecting the inner and outer walls.

[0020] like Figure 1 , 2As shown, the double J tube for ureteral end-to-side anastomosis is divided into five sections in sequence, the tube sections at both ends are elbow tubes, the tube section in the middle is a support tube, and the tube section connecting the elbow tube and the support tube is a connecting tube. After the ureteral end-to-side anastomosis operation, the normal ureter 11 in the human body is connected to the kidney 20 and the bladder 30, and the end of the ureter 12 of the other kidney is connected to the middle part of the normal ureter through the end-to-side anastomosis; at this time, the elbow tubes at both ends of the double J tube for ureteral end-to-side anastomosis are positioned in the kidney and the bladder through the setting of their curved shapes, and the support tube is inserted into the end of the other ureter through the incision in the middle part of the normal ureter, which plays a supporting role on the one hand, and has a diversion role through the drainage holes thereon on the other hand.

[0021] The double J tube for ureteral end-to-side anastomosis has elbow tubes 1 at both ends extending out from the ends of two connecting tubes 3 along opposite directions of rotation. Figure 1 As shown, the elbow tube at the upper end extends from the end of the connecting tube in a clockwise direction, and the elbow tube at the lower end extends from the end of the connecting tube in a counterclockwise direction, so that the elbow tubes at both ends and the kidney and bladder are subjected to forces in different directions, and are more stably positioned in the kidney and bladder. In addition, the end of the elbow tube 1 is closed, and the elbow tube is provided with a plurality of drainage holes 4 with a diameter smaller than the diameter of the elbow tube, so as to prevent foreign matter such as stones from entering the hose from the pipe opening with a large diameter and causing blockage. The drainage of urine is achieved by the drainage holes, and the plurality of drainage holes can effectively ensure the drainage speed.

[0022] The double J tube for ureteral end-to-side anastomosis, the support tube 2 is U-shaped, and the two ends of the U-shape are respectively connected to two connecting tubes 3. The support tube of this shape can increase the support strength while ensuring soft deformation, and better provide support for the anastomotic end of the ureter. Further, the support tube 2 includes a clamping tube section 21 in the shape of an arc, and a perforated tube section 22 connecting the clamping tube section and the connecting tube. When the normal ureter is incised, the diameter of the incision can be reduced, and the support tube is flattened and then passed through the incision. After the clamping tube section of the support tube enters the other ureter end, it will pop open under the action of deformation, so that it is clamped at the incision, greatly reducing the risk of the support tube falling off.

[0023] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A double J tube for ureteral end-to-side anastomosis, comprising elbow tubes (1) arranged at both ends, characterized in that: A support pipe (2) is arranged in the middle, and the support pipe is arranged in a bent manner. There are also connecting pipes (3) respectively connecting the two ends of the support pipe and the two elbow pipes. The elbow pipe and the support pipe are respectively provided with a plurality of drainage holes (4) connecting the inner and outer walls.

2. The double J tube for ureteral end-to-side anastomosis according to claim 1, characterized in that: The elbow pipes (1) at both ends are bent and extended from the ends of the two connecting pipes (3) in opposite directions.

3. The double J tube for ureteral end-to-side anastomosis according to claim 1 or 2, characterized in that: The end of the elbow pipe (1) is closed, and the elbow pipe is provided with a plurality of drainage holes (4) with a diameter smaller than the diameter of the elbow pipe.

4. The double J tube for ureteral end-to-side anastomosis according to claim 1, characterized in that: The support tube (2) is U-shaped, and two ends of the U-shape are respectively connected to two connecting tubes (3).

5. The double J tube for ureteral end-to-side anastomosis according to claim 1 or 4, characterized in that: The support pipe (2) comprises an arc-shaped clamping pipe section (21) and a perforated pipe section (22) connecting the clamping pipe section and the connecting pipe.

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