Bracket for preventing ureteral intestinal anastomotic stoma stenosis

Abstract

The utility model discloses a ureter intestinal anastomotic stoma stenosis prevention support which comprises an anti-stenosis support body, the front end of the anti-stenosis support body is fixedly connected with a leading-out ring, the rear end of the anti-stenosis support body is fixedly connected with a leading-in ring, the anti-stenosis support body is arranged in a circular truncated cone shape and is arranged in a grid shape, and the leading-in ring is arranged on the anti-stenosis support body. The cross section of the leading-out ring and the cross section of the leading-in ring are both circular, the radius of the leading-out ring is larger than the radius of the leading-in ring, the anti-stenosis support, the leading-out ring and the leading-in ring are all made of titanium alloy, the anti-stenosis support is wrapped with a covering film, the covering film is located between the leading-out ring and the leading-in ring, and the covering film is located between the leading-out ring and the leading-in ring. The circular truncated cone-shaped latticed anti-stenosis stent is matched with the leading-out ring with the large radius at the front end and the leading-in ring with the small radius at the rear end, so that the stent can be placed in and taken out of the ureteral intestinal anastomotic stoma more smoothly, damage to the interior of the anastomotic stoma is reduced, and the operation convenience is greatly improved; the trumpet-shaped design can better play a role in preventing the anastomotic stoma from being narrow, and the effect is remarkable.

Description

Technical Field

[0001] This utility model belongs to the field of urological medical technology, specifically relating to a stent for preventing ureteroenterostomy stricture. Background Technology

[0002] In the medical field of the urinary system, ureteroenterostomy is an important surgical procedure. However, postoperative ureteroenterostomy stricture has always been a serious problem troubling doctors and patients.

[0003] Traditional methods for preventing ureteroenterostomy stricture have many limitations. Ordinary medical stents often cannot adapt well to the unique structure and physiological environment of the ureteroenterostomy, potentially causing damage to the anastomosis during insertion and removal, resulting in less smooth procedures, increased patient discomfort, and greater surgical difficulty. Furthermore, traditional stents are not entirely effective in preventing stricture, failing to effectively maintain anastomotic patency, leading to a high recurrence rate of stricture.

[0004] In addition, in terms of material selection, traditional stents may trigger immune and inflammatory responses in the human body and cannot remain stably in the body for a long time, requiring frequent stent replacements. This not only places a physical burden on patients but also increases medical costs and the number of surgeries.

[0005] In summary, there is an urgent need for an innovative stent to prevent ureteroenteric anastomotic stricture, in order to solve many problems existing in this field with traditional methods. Utility Model Content

[0006] The purpose of this invention is to provide a stent for preventing ureteroenterostomy stenosis, thereby solving the problems of easy infection and displacement of traditional stents for preventing ureteroenterostomy stenosis mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a stent for preventing ureteroenterostomy stricture, comprising an anti-stenosis stent, wherein a guide ring is fixedly connected to the front end of the anti-stenosis stent and an inlet ring is fixedly connected to the rear end of the anti-stenosis stent.

[0008] Preferably, the anti-narrowing bracket is shaped like a frustum and has a grid-like structure, and both the guide ring and the inlet ring have circular cross-sections.

[0009] Preferably, the radius of the outgoing ring is larger than the radius of the incoming ring, and the anti-stenosis stent, the outgoing ring, and the incoming ring are all made of titanium alloy.

[0010] Preferably, the anti-stenosis stent is covered with a membrane, and the membrane is located between the outlet ring and the inlet ring.

[0011] Preferably, both the outgoing ring and the incoming ring are fitted with multiple fixing straps, and both the coating and the multiple fixing straps are made of absorbable material.

[0012] Preferably, the anti-stenosis stent is fixed at the junction of the bladder and ureter by multiple fixation straps and absorbable sutures, the guide ring is fixed at the bladder end, and the inlet ring is fixed at the ureter end.

[0013] Compared with the prior art, this utility model provides a stent to prevent ureteroenteric anastomotic stricture, which has the following beneficial effects:

[0014] 1. Reasonable structural design: The truncated cone shape with a grid pattern is used to prevent stenosis. The combination of a larger radius guide ring at the front end and a smaller radius guide ring at the rear end makes the insertion and removal of the stent from the ureterointestinal anastomosis smoother, reduces damage to the inside of the anastomosis, and greatly improves the ease of operation. The trumpet-shaped design can better play the role of preventing anastomotic stenosis, with remarkable effect.

[0015] 2. Significant material advantages: The stent, delivery ring, and inlet ring are made of titanium alloy, which reduces the body's immune and inflammatory responses. They can remain in the body for a long time without causing infection, reducing the pain and risks caused by patients' discomfort due to stent material.

[0016] 3. Strong protective function: The outer covering membrane can effectively prevent internal tissues from squeezing into the stent mesh, avoiding damage to the tissues. At the same time, it can prevent the stent from becoming stuck with the tissue and difficult to remove, which facilitates the patient's subsequent treatment. The fixation band is made of absorbable material, and the stent is fixed at the junction of the bladder and ureter with absorbable sutures to prevent ureteral peristalsis from causing the stent to shift, thereby improving the success rate of the operation and reducing the risk of surgical failure.

[0017] 4. Good urine flow: The funnel-shaped stent and the specific outlet ring at the bladder end and inlet ring at the ureter end make the opening of the urine flow direction increasingly larger, effectively avoiding internal blockage, reducing the risk of stone formation, and benefiting the patient's postoperative recovery and long-term health. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the ureteroenteric anastomosis stent of this utility model.

[0019] Figure 2 This is a top view schematic diagram of the ureteroenteric anastomosis stent of this utility model.

[0020] Figure 3 This is a three-dimensional cross-sectional view of the ureteroenteric anastomosis stent of this utility model.

[0021] Figure 4This is a schematic diagram of the ureteroenteric anastomosis stent of this utility model after an explosion.

[0022] In the diagram: 1. Anti-stenosis stent; 2. Outlet ring; 3. Inlet ring; 4. Covering film; 5. Fixation strap. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-4 The stent shown is for preventing ureteroenterostomy stricture. It includes an anti-stenosis stent 1, a guide ring 2 fixedly connected to the front end of the anti-stenosis stent 1, and an inlet ring 3 fixedly connected to the rear end of the anti-stenosis stent 1. The anti-stenosis stent 1 is shaped like a frustum of a cone and has a mesh-like arrangement. Both the guide ring 2 and the inlet ring 3 have circular cross-sections, with the radius of the guide ring 2 being larger than that of the inlet ring 3. The anti-stenosis stent 1, guide ring 2, and inlet ring 3 are all made of titanium alloy. The frustum of a cone design of the anti-stenosis stent 1, along with the circular cross-sections of the guide ring 2 and inlet ring 3, allows for smoother insertion and removal from the ureteroenterostomy, avoiding damage to the anastomosis and facilitating insertion and removal. The funnel-shaped design of the anti-stenosis stent 1 provides better protection against anastomotic stricture. Furthermore, the titanium alloy construction of the anti-stenosis stent 1 reduces the body's immune and inflammatory responses, allowing it to remain in the body for a longer period without causing infection.

[0025] Preferably, the anti-stenosis stent 1 is externally wrapped with a membrane 4, which is located between the exit ring 2 and the inlet ring 3. Multiple fixing straps 5 are fitted onto the exterior of both the exit ring 2 and the inlet ring 3. The membrane 4 and the multiple fixing straps 5 are made of absorbable material. The anti-stenosis stent 1 is fixed to the junction of the bladder and ureter via the multiple fixing straps 5 and absorbable sutures. The exit ring 2 is fixed to the bladder end, and the inlet ring 3 is fixed to the ureter end. The membrane 4 externally wrapped around the anti-stenosis stent 1 effectively prevents internal tissue from being squeezed into the mesh of the anti-stenosis stent 1. The incision prevents damage to the internal tissues of the anastomosis and prevents the anti-stenosis stent 1 from becoming stuck with the tissue and being unable to be removed. At the same time, the anti-stenosis stent 1 is fixed by multiple fixation straps 5 to prevent ureteral peristalsis from causing stent displacement, avoid surgical failure, and improve the success rate of the operation. Because the anti-stenosis stent 1 is funnel-shaped and the outlet ring 2 is fixed at the bladder end and the inlet ring 3 is fixed at the ureter end, urine is introduced from the ureter end to the bladder end. Therefore, the opening of the urine in the flow direction becomes larger and larger, which can effectively avoid internal blockage and prevent the formation of stones.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stent for preventing ureteroenteric anastomotic stricture, characterized in that, It includes an anti-stenosis stent (1), the front end of which is fixedly connected to an outlet ring (2), and the rear end of which is fixedly connected to an inlet ring (3).

2. The stent for preventing ureteroenteric anastomotic stricture according to claim 1, characterized in that: The anti-narrowing bracket (1) is shaped like a truncated cone and has a grid pattern. The cross-sections of the guide ring (2) and the inlet ring (3) are both circular.

3. The stent for preventing ureteroenteric anastomotic stricture according to claim 2, characterized in that: The radius of the outgoing ring (2) is greater than the radius of the incoming ring (3). The anti-narrowing bracket (1), the outgoing ring (2) and the incoming ring (3) are all made of titanium alloy.

4. The stent for preventing ureteroenteric anastomotic stricture according to claim 3, characterized in that: The anti-narrowing stent (1) is covered with a membrane (4), and the membrane (4) is located between the outlet ring (2) and the inlet ring (3).

5. A stent for preventing ureteroenteric anastomotic stricture according to claim 4, characterized in that: The outer sides of the outgoing ring (2) and the ingoing ring (3) are each fitted with multiple fixing bands (5), and the film (4) and the multiple fixing bands (5) are all made of absorbable material.

6. A stent for preventing ureteroenteric anastomotic stricture according to claim 5, characterized in that: The anti-stenosis stent (1) is fixed at the junction of the bladder and ureter by multiple fixing straps (5) and absorbable sutures. The guide ring (2) is fixed at the bladder end, and the guide ring (3) is fixed at the ureter end.

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