Urinary stent
By designing a urinary tract stent that includes an air balloon, a delivery tube, and a one-way valve, the problem of discomfort caused by stent swaying has been solved, achieving stable fixation and reducing the risk of infection, thereby improving patient comfort and health safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING DRUM TOWER HOSPITAL
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-14
AI Technical Summary
Existing urinary tract stents cause discomfort due to movement within the patient's body, and the lack of a fixation device affects patient comfort.
A urinary tract stent was designed, comprising a connecting tube, a balloon, a transmission tube, and a one-way valve. The balloon is used to fix the stent to the kidney and bladder. The connecting tube is equipped with a suction groove and a limiting block to increase the urine flow area and prevent blockage. The inner wall of the connecting tube is coated with a hydrogel coating and antibacterial material to reduce friction and infection risk.
This achieves stable fixation of the stent, reduces pain and displacement caused by activity, lowers the risk of urinary retention and stone formation, and also reduces the risk of infection.
Smart Images

Figure CN224484247U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urological nursing technology, specifically a urinary tract stent. Background Technology
[0002] Urological nursing refers to comprehensive nursing services provided to patients with urinary system diseases (including diseases of the kidneys, ureters, bladder, urethra, and male reproductive system). Its aim is to help patients alleviate symptoms, promote recovery, prevent complications, and improve their quality of life through professional nursing interventions. Urinary stents typically connect the kidneys to the bladder, allowing hydronephrosis to drain into the bladder for easier drainage.
[0003] Existing urinary tract stents are usually implanted into the patient's body. Since there is no fixing device on the surface of the stent, the patient's body will shake during daily life, causing discomfort to the patient's body due to the movement of the stent. Utility Model Content
[0004] The purpose of this invention is to provide a urinary tract stent to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a urinary tract stent, comprising a connecting tube, an air bladder mounted on the surface of the connecting tube, a transmission tube fixedly connected to one side of the air bladder, a one-way valve provided on the inner wall of the transmission tube, a first suction groove provided on the surface of the connecting tube on the side of the air bladder, a second suction groove provided on the side away from the first suction groove, a limiting block installed on one side of the second suction groove, the limiting block being located on the inner wall of the connecting tube.
[0006] Optionally, the inner wall of the connecting tube is provided with a groove, and the inner wall of the groove is provided with a hydrogel coating. By installing the hydrogel coating, friction and irritation to the urinary tract mucosa can be reduced during the insertion and placement of the connecting tube, thereby reducing the risk of infection.
[0007] Optionally, an elongated groove is formed on the surface of the hydrogel coating of the connecting tube, and an installation groove is formed on the inner wall of the elongated groove. The elongated groove can attract bacteria in the pipeline to enter the interior. Tiny antibacterial material silver ions are installed inside the groove, which can be continuously released after the connecting tube is installed to perform antibacterial treatment on the elongated groove and the surface of the connecting tube, which can effectively inhibit the adhesion and reproduction of bacteria on the surface of the support.
[0008] Optionally, there are two airbags, which are symmetrically distributed.
[0009] Compared with this device, the beneficial effects of this utility model are:
[0010] 1. This urinary tract stent, through the design of connecting tubes, balloons, transmission tubes, and one-way valves, is used by inserting the connecting tubes into the kidneys and bladder. Gas is then transmitted through the transmission tubes to inflate the balloons. The one-way valve prevents gas leakage from the balloons. The balloons are positioned at the connection points of the bladder and kidneys, respectively, preventing the connecting tubes from shaking and ensuring a stable and secure fixation, reducing pain caused by displacement due to movement.
[0011] 2. This urinary tract stent, through the design of a first suction groove, a second suction groove, and a limiting block, allows for several advantages during use. The first suction groove expands the absorption range, increases the flow area of urine, and reduces fluid retention. The second suction groove, located in the lower section of the tubing between the kidney and bladder, allows fluid to flow into the bladder when it accumulates inside the tubing, preventing blockage. The limiting block, with its downward-facing opening, prevents fluid from flowing into the tubing during transmission within the connecting tube. This effectively reduces urine retention in the connecting tube and the tubing, lowering the risk of stone formation. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;
[0013] Figure 2 For the present utility model Figure 1 Enlarged view of details at point A;
[0014] Figure 3 This is a schematic cross-sectional view of the internal structure of the connecting pipe of this utility model;
[0015] Figure 4 This is a schematic diagram of the first attraction groove of this utility model.
[0016] In the diagram: 1. Connecting pipe; 2. Airbag; 3. Transmission pipe; 4. One-way valve; 5. First suction groove; 6. Second suction groove; 7. Limiting block; 8. Hydrogel coating; 9. Elongated groove; 10. Mounting groove. Detailed Implementation
[0017] 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.
[0018] Please see Figures 1-4As shown, this utility model provides a technical solution: a urinary tract stent, including a connecting tube 1, an airbag 2 mounted on the surface of the connecting tube 1, a transmission tube 3 fixedly connected to one side of the airbag 2, a one-way valve 4 provided on the inner wall of the transmission tube 3, a first suction groove 5 opened on the surface of the connecting tube 1 on one side of the airbag 2, a second suction groove 6 opened on the side away from the first suction groove 5, a limiting block 7 installed on one side of the second suction groove 6, the limiting block 7 being located on the inner wall of the connecting tube 1. After the connecting tube 1 is implanted into the kidney and bladder, gas is transmitted through the transmission tube 3 to inflate the airbag 2. The installation of the one-way valve 4 can prevent the gas inside the airbag 2 from leaking out. The position of the airbag 2... The connecting tube 1 is secured at the bladder and kidney joints to prevent it from wobbling, thus reducing pain caused by displacement due to movement. The first suction groove 5 expands the absorption range and increases the flow area of urine, reducing fluid retention. The second suction groove 6 is located in the lower section of the tubing between the kidney and bladder, allowing fluid to flow into the bladder when it accumulates inside the tubing, preventing blockage. The opening of the limiting block 7 faces downwards to prevent fluid from flowing into the tubing during transmission within the connecting tube 1, effectively reducing urine retention in the connecting tube 1 and the tubing, and lowering the risk of stone formation.
[0019] The inner wall of the connecting tube 1 is provided with a groove, and the inner wall of the groove is provided with a hydrogel coating 8. By installing the hydrogel coating 8, the friction and irritation to the urinary tract mucosa can be reduced during the insertion and indwelling of the connecting tube 1, thereby reducing the risk of infection.
[0020] An elongated groove 9 is formed on the surface of the connecting tube 1 on the surface of the hydrogel coating 8. An installation groove 10 is formed on the inner wall of the elongated groove 9. The opening of the elongated groove 9 can attract bacteria in the pipeline to enter the interior. Tiny antibacterial material silver ions are installed inside the groove, which can be continuously released after the connecting tube 1 is installed to perform antibacterial treatment on the inside of the elongated groove 9 and the surface of the connecting tube 1, which can effectively inhibit the adhesion and reproduction of bacteria on the surface of the support.
[0021] There are two airbags 2, which are symmetrically distributed.
[0022] In this invention, the working steps of the device are as follows:
[0023] First step: After the connecting tube 1 is implanted into the kidney and bladder, gas is transmitted through the transmission tube 3 to inflate the balloon 2. The installation of the one-way valve 4 can prevent the gas inside the balloon 2 from leaking out. The balloon 2 is positioned at the connection points of the bladder and the kidney respectively, so that the connecting tube 1 will not shake. The connecting tube 1 is stably and firmly fixed, reducing pain caused by displacement due to movement.
[0024] The second step: The opening of the first suction groove 5 can expand the absorption range, increase the flow area of urine, and reduce fluid retention. The opening of the second suction groove 6 is located in the lower section of the tubing between the kidney and the bladder. When fluid accumulates inside the tubing, it can flow into the bladder through the second suction groove 6, avoiding tubing blockage. The opening of the limiting block 7 faces downward, which can prevent fluid from flowing into the tubing when it is being transported in the connecting tube 1. This effectively reduces the retention of urine in the connecting tube 1 and the tubing, and reduces the risk of stone formation.
[0025] The third step: By installing the hydrogel coating 8, friction and irritation to the urinary tract mucosa can be reduced during the insertion and placement of the connecting tube 1, thus reducing the risk of infection. The opening of the elongated groove 9 can attract bacteria in the tube into the interior. Tiny antibacterial material silver ions are installed inside the groove, which can be continuously released after the connecting tube 1 is installed, providing antibacterial treatment to the inside of the elongated groove 9 and the surface of the connecting tube 1, which can effectively inhibit the adhesion and reproduction of bacteria on the surface of the stent.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A urinary tract stent, comprising a connecting tube (1), characterized in that: An airbag (2) is installed on the surface of the connecting pipe (1). A transmission pipe (3) is fixedly connected to one side of the airbag (2). A one-way valve (4) is provided on the inner wall of the transmission pipe (3). A first suction groove (5) is opened on the surface of the connecting pipe (1) on one side of the airbag (2), and a second suction groove (6) is opened on the side away from the first suction groove (5). A limit block (7) is installed on one side of the second suction groove (6). The limit block (7) is located on the inner wall of the connecting pipe (1).
2. The urinary tract stent according to claim 1, characterized in that: The inner wall of the connecting pipe (1) is provided with a slot, and the inner wall of the slot is provided with a hydrogel coating (8).
3. A urinary tract stent according to claim 1, characterized in that: The surface of the connecting pipe (1) is provided with an elongated groove (9) on the surface of the hydrogel coating (8), and the inner wall of the elongated groove (9) is provided with an installation groove (10).
4. A urinary tract stent according to claim 1, characterized in that: There are two airbags (2), and the airbags (2) are symmetrically distributed.