Urinary stent
By designing a urinary stent with a positive and reverse motor, threaded column and cleaning ring, the rapid physical elimination of bacterial biofilms and crystal stones is solved, and the problem of failure of stent implantation in the prior art is solved, ensuring that the stent works for a long time after the operation and inhibiting stone formation.
Patent Information
- Application Number
- CN202420394120.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-03-01
AI Technical Summary
Existing urinary stents are prone to bacterial biofilms and crystal stones after surgery, resulting in failure of implantation. The existing treatment methods cannot effectively avoid or quickly remove these depositions.
A urinary tract bracket was designed, including a positive and reverse motor, threaded column, threaded cap and cleaning ring. The motor drives the threaded column to drive the cleaning ring to repeatedly move on the surface of the bracket, achieving rapid physical removal of bacterial biofilms and crystal stones.
It effectively solves the problem of stone formation on the surface of the urinary stent deposition and formation of stones, ensuring that the stent can work for a long time after the operation, and attracts macrophages through biological coating for biological phagocytosis and clears, inhibiting stone formation.
Smart Images
Figure CN222955571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and more specifically, it relates to a urinary tract stent. Background Art
[0002] With the development of medical device technology, implanting urinary tract stents has become an important treatment method in current clinical practice for diseases such as kidney stones, ureteral stones, ureteral stricture, urethral stricture, and prostatic stricture. Moreover, according to the treatment of different diseases, urinary tract stents can be specifically divided into prostatic stents, ureteral stents, urethral stents, etc. However, according to clinical data, after the implantation of any urinary stent, the situation of implantation failure due to the formation of stones on the surface of the stent after surgery accounts for about 50% of the clinical postoperative complications. To address this problem, in current clinical treatments, postoperative complications are mainly controlled by means such as taking anti-stone drugs, patients urinating a large amount, regular examinations, short-term implantation, and repeated replacement. However, the above methods can neither completely avoid the colonization of bacteria on the surface of the stent, that is, they cannot completely avoid the crystal deposition caused by the adhesion of bacteria on the surface of the stent to form a bacterial biofilm, nor can they perform rapid physical removal operations on the bacterial biofilm, crystals, and deposited stones adhered to the surface of the stent body. In this case, the methods of short-term implantation and repeated replacement will greatly increase the postoperative inconvenience of patients. To solve the above problems, we introduce the following device. Content of the Utility Model
[0003] Technical Problems to be Solved
[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a urinary tract stent, which has the characteristic of performing rapid physical removal operations on the bacterial biofilm, crystals, and deposited stones adhered to the surface of the stent body.
[0005] Technical Solution
[0006] To achieve the above purpose, the utility model provides a urinary tract stent, including a stent body. A housing is fixedly connected to the surface of the stent body. A positive and negative motor is fixedly connected inside the housing. The other end of the output shaft of the positive and negative motor is fixedly connected to a threaded column. The other end of the threaded column is fixedly connected to a rotating shaft. A bearing is fixedly connected inside the housing. The other end of the rotating shaft passes through the inside of the bearing. A threaded cap is threadedly connected to the surface of the threaded column. A connecting rod is fixedly connected to the side surface of the threaded cap. There are two groups of connecting rods, and they are symmetrically arranged on the surface of the threaded cap. A limiting groove is opened on the side surface of the housing. There are two groups of limiting grooves, and they are symmetrically arranged on the side surface of the housing. The connecting rod is movably connected inside the limiting groove. The other end of the connecting rod is fixedly connected to a cleaning ring.
[0007] When using a urinary tract stent with this technical solution, by setting a reversible motor, a threaded column, a threaded nut, and a cleaning ring, when people need to quickly physically remove the bacterial biofilm, crystals, and stones formed by deposition on the surface of the stent body, people only need to control the operation of the reversible motor to drive the rotation of the threaded column. With the cooperation of the threaded column and the threaded nut, the cleaning ring is driven to move repeatedly on the surface of the stent body, so as to quickly physically remove the bacterial biofilm, crystals, and stones formed by deposition on the surface of the stent body, effectively solving the problem of stent implantation failure caused by the rapid deposition of stones on the surface of the urinary tract stent, and ensuring that the urinary tract stent can work in the patient's body for a long time after surgery.
[0008] Further, the cleaning ring is slidably connected to the surface of the stent body. A slide bar is disposed inside the cleaning ring. The surface of the stent body is fixedly connected with fixing plates. There are two groups of fixing plates, and they are symmetrically arranged at the left and right ends of the surface of the stent body. The slide bar is fixedly connected inside the two groups of fixing plates.
[0009] Further, a first biological coating is provided on the surface of the cleaning ring to attract macrophages to the surface of the cleaning ring.
[0010] Further, a second biological coating is provided on the surface of the stent body to attract macrophages to the surface of the cleaning ring. The first biological coating and the second biological coating adopt an active factor layer, which is composed of at least one active factor among human macrophage activating factor, anti-CD47 antibody, and activin A.
[0011] Further, the first biological coating and the second biological coating adopt a metal ion layer, which is composed of ions corresponding to at least one element among magnesium, zinc, tin, silver, and copper, or inorganic salts corresponding to at least one element, or nanospheres corresponding to at least one element.
[0012] Beneficial effects
[0013] In summary, the present utility model has the following beneficial effects:
[0014] 1. For this urinary tract stent, by setting a reversible motor, a threaded column, a threaded nut, and a cleaning ring, when people need to quickly physically remove the bacterial biofilm, crystals, and stones formed by deposition on the surface of the stent body, they only need to control the operation of the reversible motor to drive the rotation of the threaded column. With the cooperation of the threaded column and the threaded nut, the cleaning ring is driven to move repeatedly on the surface of the stent body, thereby realizing the quick physical removal of the bacterial biofilm, crystals, and stones formed by deposition on the surface of the stent body, effectively solving the problem of stent implantation failure caused by the rapid deposition of stones on the surface of the urinary tract stent, and ensuring that the urinary tract stent can work in the patient's body for a long time after surgery;
[0015] 2. For this urinary tract stent, by setting a fixing plate, a sliding rod, a first biological coating, and a second biological coating, when people need to clean the bacteria and crystals on the surface of the stent body, with the cooperation of the first biological coating and the second biological coating, macrophages are attracted to the surface of the stent body and the cleaning ring surface, and the macrophages are used to biologically phagocytize and remove the bacteria and crystals to inhibit the formation of stones on the surface of the stent body and the cleaning ring. With the cooperation of the fixing plate and the sliding rod, the smoothness and stability of the cleaning ring during movement are ensured, enabling the cleaning ring to move smoothly and reciprocally along the stent body, improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a schematic structural diagram of the front view three-dimensional section of the present invention;
[0018] Figure 2 It is a schematic structural diagram of the front view three-dimensional of the present invention;
[0019] Figure 3 It is Figure 1 a schematic radial cross-sectional view of the connection position between the cleaning ring and the stent body in
[0020] The reference numerals in the drawings are:
[0021] 1. Stent body; 2. Outer shell; 3. Reversible motor; 4. Threaded column; 5. Rotating shaft; 6. Bearing; 7. Threaded nut; 8. Connecting rod; 9. Cleaning ring; 10. Sliding rod; 11. Fixing plate; 12. Limiting groove; 13. First biological coating; 14. Second biological coating. Detailed implementation mode
[0022] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the technical solutions in the specific implementation modes of the present utility model are clearly and completely described below to further elaborate the present utility model. Obviously, the described specific implementation modes are only part of the implementation modes of the present utility model, rather than all styles.
[0023] Embodiment:
[0024] The following is a further detailed description of the present utility model in conjunction with the attached Figures 1-3 drawings.
[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: a urinary tract stent, including a stent body 1, a housing 2 is fixedly connected to the surface of the stent body 1, a forward and reverse motor 3 is fixedly connected inside the housing 2, the other end of the output shaft of the forward and reverse motor 3 is fixedly connected to a threaded column 4, the other end of the threaded column 4 is fixedly connected to a rotating shaft 5, a bearing 6 is fixedly connected inside the housing 2, the other end of the rotating shaft 5 is inserted inside the bearing 6, a threaded nut 7 is threadedly connected to the surface of the threaded column 4, a connecting rod 8 is fixedly connected to the side surface of the threaded nut 7, there are two groups of connecting rods 8, and they are symmetrically arranged on the surface of the threaded nut 7, a limiting groove 12 is opened on the side surface of the housing 2, there are two groups of limiting grooves 12, and they are symmetrically arranged on the side surface of the housing 2, the connecting rod 8 is movably connected inside the limiting groove 12, and the other end of the connecting rod 8 is fixedly connected to a cleaning ring 9.
[0026] By adopting the above technical solution, for this urinary tract stent, by setting the forward and reverse motor 3, the threaded column 4, the threaded nut 7 and the cleaning ring 9, when people need to perform a rapid physical removal operation on the bacterial biofilm, crystals and stones formed by deposition adhered to the surface of the stent body 1, people only need to control the operation of the forward and reverse motor 3 to drive the threaded column 4 to rotate. Under the cooperation of the threaded column 4 and the threaded nut 7, the cleaning ring 9 is driven to move repeatedly on the surface of the stent body 1, so as to realize the rapid physical removal operation on the bacterial biofilm, crystals and stones formed by deposition adhered to the surface of the stent body 1, thereby effectively solving the problem of stent implantation failure caused by the rapid deposition of stones on the surface of the urinary tract stent, and ensuring that the urinary tract stent can work in the patient's body for a long time after the operation.
[0027] Specifically, the cleaning ring 9 is slidably connected to the surface of the stent body 1, a sliding rod 10 is inserted inside the cleaning ring 9, fixing plates 11 are fixedly connected to the surface of the stent body 1, there are two groups of fixing plates 11, and they are symmetrically arranged at the left and right ends of the surface of the stent body 1, and the sliding rod 10 is fixedly connected inside the two groups of fixing plates 11.
[0028] By adopting the above technical solution, for the urinary tract stent, by providing the fixing plate 11, the sliding rod 10, the first biological coating 13 and the second biological coating 14, when people need to clean the bacteria and crystals on the surface of the stent body 1, with the cooperation of the first biological coating 13 and the second biological coating 14, macrophages are attracted to the surfaces of the stent body 1 and the cleaning ring 9, and the bacteria and crystals are cleared by biological phagocytosis with the help of macrophages, so as to inhibit the formation of stones on the surfaces of the stent body 1 and the cleaning ring 9. With the cooperation of the fixing plate 11 and the sliding rod 10, the smoothness and stability of the cleaning ring 9 during movement are ensured, so that the cleaning ring 9 can reciprocate smoothly along the stent body 1, improving the practicability of the device.
[0029] Specifically, the surface of the cleaning ring 9 is provided with the first biological coating 13 to attract macrophages to the surface of the cleaning ring 9.
[0030] Specifically, the surface of the stent body 1 is provided with the second biological coating 14 to attract macrophages to the surface of the cleaning ring 9. The first biological coating 13 and the second biological coating 14 adopt an active factor layer, which is composed of at least one active factor among human macrophage activating factor, anti-CD47 antibody, and activin A.
[0031] Specifically, the first biological coating 13 and the second biological coating 14 adopt a metal ion layer, which is composed of ions corresponding to at least one element among magnesium, zinc, tin, silver, and copper, or inorganic salts corresponding to at least one element, or nanospheres corresponding to at least one element.
[0032] The working principle of the present utility model is as follows: when people need to perform a rapid physical removal operation on the bacterial biofilm, crystals, and deposited stones adhered to the surface of the stent body 1, people only need to control the operation of the forward and reverse motor 3 to drive the threaded column 4 to rotate. With the cooperation of the threaded column 4 and the threaded nut 7, the cleaning ring 9 is driven to move repeatedly on the surface of the stent body 1, so as to realize the rapid physical removal operation on the bacterial biofilm, crystals, and deposited stones adhered to the surface of the stent body 1, effectively solving the problem of stent implantation failure caused by the rapid deposition of stones on the surface of the urinary tract stent, and ensuring that the urinary tract stent can work in the patient's body for a long time after surgery. When people need to clean the bacteria and crystals on the surface of the stent body 1, with the cooperation of the first biological coating 13 and the second biological coating 14, macrophages are attracted to the surfaces of the stent body 1 and the cleaning ring 9, and the bacteria and crystals are cleared by biological phagocytosis with the help of macrophages, so as to inhibit the formation of stones on the surfaces of the stent body 1 and the cleaning ring 9. With the cooperation of the fixing plate 11 and the sliding rod 10, the smoothness and stability of the cleaning ring 9 during movement are ensured, so that the cleaning ring 9 can reciprocate smoothly along the stent body 1, improving the practicability of the device.
[0033] This specific embodiment is only an interpretation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.
Claims
1. A urinary system stent, comprising a stent body (1), characterized in that: The surface of the bracket body (1) is fixedly connected to a shell (2), the inside of the shell (2) is fixedly connected to a forward and reverse motor (3), the other end of the output shaft of the forward and reverse motor (3) is fixedly connected to a threaded column (4), the other end of the threaded column (4) is fixedly connected to a rotating shaft (5), the inside of the shell (2) is fixedly connected to a bearing (6), the other end of the rotating shaft (5) is inserted into the inside of the bearing (6), the surface of the threaded column (4) is threadedly connected to a threaded cap (7), the side of the threaded cap (7) is fixedly connected to a connecting rod (8), there are two groups of connecting rods (8), and they are symmetrically arranged on the surface of the threaded cap (7), the side of the shell (2) is provided with a limiting groove (12), there are two groups of limiting grooves (12), and they are symmetrically arranged on the side of the shell (2), the connecting rod (8) is movably connected to the inside of the limiting groove (12), and the other end of the connecting rod (8) is fixedly connected to a cleaning ring (9).
2. The urinary system stent according to claim 1, characterized in that: The cleaning ring (9) is slidably connected to the surface of the bracket body (1), a sliding rod (10) is inserted into the cleaning ring (9), and a fixing plate (11) is fixedly connected to the surface of the bracket body (1). There are two groups of fixing plates (11) and they are symmetrically arranged at the left and right ends of the surface of the bracket body (1), and the sliding rod (10) is fixedly connected inside the two groups of fixing plates (11).
3. A urinary system stent according to claim 2, characterized in that: The surface of the cleaning ring (9) is provided with a first biological coating (13) to attract macrophages to the surface of the cleaning ring (9), and the surface of the stent body (1) is provided with a second biological coating (14).