An antibacterial-coated ureteral stent and implantation device thereof

Abstract

The application relates to the technical field of antibacterial coating ureteral stents, and discloses an antibacterial coating ureteral stent, which comprises a telescopic liquid-permeating mechanism, and both ends of the telescopic liquid-permeating mechanism are provided with fixing mechanisms. The antibacterial coating ureteral stent and the implanting device thereof are provided with the telescopic liquid-permeating mechanism, the fixing mechanism, the guide wire mechanism and the pushing mechanism, can form elasticity through the vortex fixed end pipe and the spring permeation pipe during use, can self-adapt to the elastic telescoping of the ureter when the patient's body position changes or moves, and can form storage for the end part through the multilayer vortex structure of the vortex fixed end pipe, so that rigid contact of the top end with the renal pelvis and the bladder wall is avoided, and the comfort of the patient is improved.

Description

Technical Field

[0001] This invention relates to the field of antibacterial coated ureteral stent technology, specifically to an antibacterial coated ureteral stent and its implantation device. Background Technology

[0002] A ureteral stent, also known as a ureteral stent tube, is a commonly used medical device in urological surgery. It is made of an X-ray-proof material and comes in two types: double-J stents and single-J stents. Double-J stents have J-shaped bends at both ends, while single-J stents have a J-shaped bend at only one end. During use, the two ends are placed in the kidney and bladder, respectively, penetrating the ureter to provide support and drainage. Clinically, it is used in surgeries for kidney stones, ureteral stones, and ureteral stricture dilation to prevent postoperative stricture and promote the expulsion of stone fragments. During the indwelling period, symptoms such as hematuria and bladder irritation may occur, which should be relieved by drinking plenty of water and avoiding strenuous activity.

[0003] In clinical applications, antibacterial coated ureteral stents are typically left in place for extended periods. Although an appropriate stent size is selected preoperatively based on the patient's ureteral anatomical length, the ureter elastically expands and contracts with changes in body position or movement during actual physiological activities. However, current stent designs lack a length adaptive adjustment mechanism, causing the stent tip to fail to maintain an anatomical match with the dynamically changing ureteral length, leading to iatrogenic discomfort. Notably, the J-shaped tip of currently available J-stents has significant design limitations: its curvature is too small, resulting in insufficient bending. The bending structure is also relatively simple, lacking a multi-level buffer design. This structural defect causes the stent tip to form rigid contact with the renal pelvis and bladder wall after implantation. This non-physiological mechanical stimulation, combined with the lack of a length adaptive adjustment mechanism, can cause significant irritation symptoms in patients, severely impacting their postoperative quality of life. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an antibacterial coated ureteral stent and its implantation device, solving the problems mentioned in the background.

[0005] The present invention provides the following technical solution: an antibacterial coated ureteral stent, comprising: a telescopic leakage mechanism, wherein both ends of the telescopic leakage mechanism are provided with fixing mechanisms, the telescopic leakage mechanism includes a spring leakage tube, and the fixing mechanism includes a first end and a spiral fixing end tube, the spiral fixing end tube being integrally disposed at one end of the first end, and the spiral fixing end tube being spiral-shaped, with the free end of the spiral fixing end tube contracted in the middle of the spiral shape, and the spiral fixing end tube being elastic.

[0006] Preferably, the telescopic seepage mechanism further includes an end connector, a threaded male connector, and a sealing ring. The end connector is fixedly connected to one end of the spring seepage tube, the threaded male connector is integrally disposed at one end of the end connector, and the sealing ring is fixedly sleeved on the surface of the threaded male connector.

[0007] Preferably, the telescopic seepage mechanism further includes a support main tube, a threaded female head, a seepage communication groove, and an internal seepage hole. The number of spring seepage tubes is two. The support main tube is disposed between the two spring seepage tubes. The threaded female heads are integrally disposed at both ends of the support main tube, and the inner walls of the two threaded female heads are provided with mating internal threads. The surface of the threaded male head is provided with mating external threads, and the two threaded female heads are threadedly connected to the two threaded male heads respectively. The seepage communication groove is embedded in the surface of the support main tube, and the internal seepage hole is opened through the surface of the seepage communication groove, and the threaded female head is connected to the seepage communication groove.

[0008] Preferably, the fixing mechanism further includes a first seepage hole and a first anti-slip hole. The number of the first end and the number of the vortex fixing end tube are both two. The two vortex fixing end tubes are fixedly connected to the ends of the two spring seepage tubes away from the main support tube through the two first end. The first seepage holes are respectively opened through the surfaces of the two first end, and the first anti-slip holes are respectively opened through the surfaces of the free ends of the two vortex fixing end tubes. The two first end, the two vortex fixing end tubes, the two first seepage holes, the two first anti-slip holes and a telescopic seepage mechanism form a double J tube structure.

[0009] Preferably, the fixing mechanism further includes a first seepage hole, a first anti-slip hole, a second end, a straight fixed end tube, a second seepage hole, and a second anti-slip hole. The number of the first end and the number of the spiral fixed end tubes are both one. The first seepage hole penetrates the surface of the first end, and the first anti-slip hole penetrates the surface of the free end of the spiral fixed end tube. The straight fixed end tube is integrally disposed at one end of the second end. The number of the second end and the number of the straight fixed end tubes are both one. The straight fixed end tube is fixedly connected to the end of one spring seepage tube away from the main support tube via the second end, and the spiral fixed end tube is fixedly connected to the end of another spring seepage tube away from the main support tube via the first end. The second seepage hole penetrates the surface of the second end, and the second anti-slip hole penetrates the surface of the free end of the straight fixed end tube. The straight fixed end tube is elastic, and a first end, a spiral fixed end tube, a first seepage hole, a first anti-slip hole, a second end, a straight fixed end tube, a second seepage hole, a second anti-slip hole, and a telescopic seepage mechanism together form a single J-tube structure.

[0010] An implantation device includes: a guidewire mechanism, wherein a pushing mechanism is provided on the surface of the guidewire mechanism, and the surface of the guidewire mechanism is slidably connected to the inner wall of the telescopic drainage mechanism and the inner wall of the fixing mechanism, respectively.

[0011] Preferably, the guide wire mechanism includes a sliding guide wire and a threaded guide wire. The surface of the sliding guide wire is slidably connected to the inner wall of the spring permeation tube, the inner wall of the end tube, and the inner wall of the support tube, respectively. The threaded guide wire is fixedly connected to one end of the sliding guide wire, and the surface of the threaded guide wire is provided with a pushing external thread.

[0012] Preferably, the pushing mechanism includes a pushing tube, a pushing sleeve, a rubber liquid bladder, and anti-slip textures. The pushing tube is movably sleeved on the surface of the guide wire, the pushing sleeve is fixedly connected to one end of the pushing tube, the rubber liquid bladder is fixedly connected to the inner wall of the pushing sleeve, and the anti-slip textures are formed on the inner wall of the rubber liquid bladder.

[0013] Preferably, the pushing mechanism further includes a connecting pipe, an outer cavity, an outer head, a liquid guide tube, a switch valve, an extension hose, and a sleeve. The connecting pipe is fixedly connected to the end of the pushing tube away from the pushing sleeve. The outer cavity is opened inside the connecting pipe. The outer head is integrally disposed on the surface of the connecting pipe and communicates with the outer cavity. The liquid guide tube is fixedly connected to the inside of the pushing tube, and the outer cavity communicates with the rubber liquid bladder through the liquid guide tube. The switch valve is installed on the surface of the outer head. The extension hose is fixedly connected to one end of the outer head, and the sleeve is fixedly connected to one end of the extension hose.

[0014] Preferably, the pushing mechanism further includes an adjusting cylinder, a flexible groove, a threaded pad, and a damping ring. The adjusting cylinder is rotatably connected to one end of the connecting pipe via a bearing. The flexible groove is embedded in the surface of the adjusting cylinder. There are two threaded pads, and both threaded pads are fixedly connected to the inside of the flexible groove. The inner surfaces of both threaded pads are provided with intermittent internal threads. The two threaded pads are threadedly connected to the threaded guide wire via the intermittent internal threads and the pushing external threads. The damping ring is fixedly connected to the inside of the adjusting cylinder, and the inner surface of the damping ring is slidably connected to the surface of the threaded guide wire.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This antibacterial coated ureteral stent and its implantation device, through the design of a telescopic drainage mechanism, a fixation mechanism, a guidewire mechanism, and a pushing mechanism, can adapt to the elastic expansion and contraction of the ureter during use by forming an elasticity through the vortex-fixed end tube and the spring drainage tube. This ensures that the ureter can adapt to changes in patient position or movement. Furthermore, the multi-layered vortex structure of the vortex-fixed end tube ensures that its end is contained, avoiding direct rigid contact between its tip and the renal pelvis and bladder wall, thus improving patient comfort.

[0017] This antibacterial coated ureteral stent and its implantation device, through the design of a spring-loaded permeation tube, end fitting, threaded male connector, sealing ring, support main tube, threaded female connector, permeation communication groove, and internal permeation hole, can create a large permeation area at both ends of the ureter after installation via the spring-loaded permeation tube, ensuring rapid urine infiltration and avoiding easy hydronephrosis. At the same time, the elasticity of the spring-loaded permeation tube can also adapt to different body conditions, improving comfort.

[0018] The antibacterial coated ureteral stent and its implantation device, through the setting of the first end, the spiral fixed end tube, the first underflow hole and the first anti-slip hole, can ensure stability through the elasticity of the spiral fixed end tube itself, and can also contract and relax according to the patient's position changes or movement in conjunction with the elastic expansion and contraction of the ureter, thereby forming a flexible contact between the surface and the renal pelvis and bladder wall, reducing irritation.

[0019] The antibacterial coated ureteral stent and its implantation device, through the provided sliding guide wire and threaded guide wire, can serve as a guide and support during implantation, ensuring that the antibacterial coated ureteral stent can be delivered to the designated location.

[0020] This antibacterial coated ureteral stent and its implantation device, through the inclusion of a push tube, push sleeve, rubber fluid balloon, anti-slip texture, connecting tube, external cavity, external head, drainage tube, switch valve, extension hose, sleeve, adjusting cylinder, flexible groove, threaded pad, and damping ring, can form a fixed structure during the installation of the antibacterial coated ureteral stent. It is convenient to control the position of the antibacterial coated ureteral stent by pushing and pulling the push tube. At the same time, the adjustment cylinder and threaded pad cooperate with the threaded guide wire to facilitate fine adjustment of the position of the antibacterial coated ureteral stent. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the implantation device of the present invention;

[0023] Figure 3 This is a schematic diagram of the double-J tube structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the single J-tube structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the single J-tube explosion structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the guide wire mechanism of the present invention;

[0027] Figure 7 This is a cross-sectional view of the push sleeve position of the present invention;

[0028] Figure 8This is a schematic diagram of the structure at the location of the external protrusion of the present invention;

[0029] Figure 9 This is a cross-sectional view of the external protrusion of the present invention;

[0030] Figure 10 This is a schematic diagram of the regulating cylinder structure of the present invention;

[0031] Figure 11 This is a cross-sectional view of the position of the adjusting cylinder in this invention.

[0032] In the diagram: 101, spring-loaded permeation tube; 102, end connector; 103, threaded male end; 104, sealing ring; 105, main support tube; 106, threaded female end; 107, permeation communication groove; 108, internal permeation hole; 201, first end; 202, spiral fixed end tube; 203, first downward permeation hole; 204, first anti-slip hole; 301, second end; 302, straight fixed end tube; 303, second permeation hole; 30 4. Second anti-slip hole; 401. Sliding guide wire; 402. Threaded guide wire; 501. Push tube; 502. Push sleeve; 503. Rubber liquid bladder; 504. Anti-slip texture; 505. Connecting tube; 506. External cavity; 507. External head; 508. Liquid guide tube; 509. Switch valve; 510. Extension hose; 511. Sleeve; 512. Adjusting cylinder; 513. Flexible groove; 514. Threaded bearing; 515. Damping ring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-11An antibacterial coated ureteral stent includes: a telescopic drainage mechanism, with fixing mechanisms at both ends of the telescopic drainage mechanism; the telescopic drainage mechanism includes a spring-loaded drainage tube 101; the fixing mechanisms include a first end 201 and a spiral-shaped fixing end tube 202; the spiral-shaped fixing end tube 202 is integrally disposed at one end of the first end 201, and the spiral-shaped fixing end tube 202 is spiral-shaped, with its free end contracted in the middle of the spiral shape; the spiral-shaped fixing end tube 202 is elastic; through the telescopic drainage mechanism, fixing mechanism, guide wire mechanism, and pushing mechanism, a spiral-shaped fixing end tube 202 and spring-loaded drainage tube 101 can be formed during use. The elasticity ensures that the ureter adapts to changes in patient position or movement, and the multi-layered spiral structure of the spiral fixed end tube 202 ensures that its end is contained, avoiding direct rigid contact between its tip and the renal pelvis and bladder wall, thus improving patient comfort. Both the surface of the expansion and contraction mechanism and the surface of the fixation mechanism are coated with antibacterial coatings, which are generally antibiotic coatings. This type of technology directly loads antibiotics onto the surface of the stent or embeds them in the carrier matrix. After stent implantation, it continuously releases antibiotic molecules to inhibit the growth and reproduction of surrounding bacteria. Due to its clear mechanism of action and reliable clinical efficacy, it is one of the most common types of antibacterial stents on the market.

[0035] The telescopic seepage mechanism also includes an end connector 102, a threaded male connector 103, and a sealing ring 104. The end connector 102 is fixedly connected to one end of the spring seepage tube 101, the threaded male connector 103 is integrally set at one end of the end connector 102, and the sealing ring 104 is fixedly sleeved on the surface of the threaded male connector 103.

[0036] The telescopic seepage mechanism includes a support main pipe 105, a threaded female head 106, a seepage connecting groove 107, and an internal seepage hole 108. There are two spring seepage tubes 101. The support main pipe 105 is positioned between the two spring seepage tubes 101. The threaded female heads 106 are integrally mounted at both ends of the support main pipe 105, and both threaded female heads 106 have mating internal threads on their inner walls. The surface of the threaded male head 103 has mating external threads, and the two threaded female heads 106 are threadedly connected to the two threaded male heads 103 respectively. The seepage connecting groove 107 is embedded within the support main pipe 105. The surface of the ureter has an internal perforation hole 108 that penetrates the surface of the perforation channel 107, and the threaded female head 106 is connected to the perforation channel 107. Through the spring perforation tube 101, end tube 102, threaded male head 103, sealing ring 104, support tube 105, threaded female head 106, perforation channel 107 and internal perforation hole 108, a large perforation position can be formed at both ends of the ureter through the spring perforation tube 101 after installation, ensuring rapid urination and avoiding easy hydronephrosis. At the same time, the elasticity of the spring perforation tube 101 can also adapt to the body, improving comfort.

[0037] In this first embodiment: the fixing mechanism further includes a first seepage hole 203 and a first anti-slip hole 204. There are two first end caps 201 and two spiral fixed end tubes 202. The two spiral fixed end tubes 202 are respectively fixedly connected to the ends of the two spring seepage tubes 101 away from the support main tube 105 via the two first end caps 201. The first seepage holes 203 are respectively opened through the surfaces of the two first end caps 201, and the first anti-slip holes 204 are respectively opened through the surfaces of the free ends of the two spiral fixed end tubes 202. The double-J tube structure consists of a head 201, two spiral fixed end tubes 202, two first underflow holes 203, two first anti-slip holes 204, and a telescopic leakage mechanism. Through the first head 201, spiral fixed end tubes 202, first underflow holes 203, and first anti-slip holes 204, the spiral fixed end tubes 202 can, through their own elasticity, ensure stability and also contract and relax according to the patient's position changes or movement in coordination with the elastic expansion and contraction of the ureter, thereby forming a flexible contact between the surface and the renal pelvis and bladder wall, reducing irritation.

[0038] In this second embodiment: the fixing mechanism further includes a first seepage hole 203, a first anti-slip hole 204, a second end 301, a straight fixing end tube 302, a second seepage hole 303, and a second anti-slip hole 304. There is one first end 201 and one spiral fixing end tube 202. The first seepage hole 203 is formed through the surface of the first end 201, and the first anti-slip hole 204 is formed through the surface of the free end of the spiral fixing end tube 202. The straight fixing end tube 302 is integrally disposed at one end of the second end 301. There is one second end 301 and one straight fixing end tube 302. The straight fixing end tube 302 is fixedly connected to one of the spring seepage tubes through the second end 301. One end of 101 is away from the support main pipe 105, and the spiral fixed end pipe 202 is fixedly connected to the other end of the spring permeation pipe 101 away from the support main pipe 105 through the first end 201. The second permeation hole 303 is opened through the surface of the second end 301, and the second anti-slip hole 304 is opened through the surface of the free end of the straight fixed end pipe 302. The straight fixed end pipe 302 is elastic. The first end 201, the spiral fixed end pipe 202, the first permeation hole 203, the first anti-slip hole 204, the second end 301, the straight fixed end pipe 302, the second permeation hole 303, the second anti-slip hole 304 and the telescopic permeation mechanism form a single J pipe structure.

[0039] An implantation device includes: a guidewire mechanism, the surface of which is provided with a pushing mechanism, and the surface of the guidewire mechanism is slidably connected to the inner wall of a telescopic drainage mechanism and the inner wall of a fixing mechanism.

[0040] The guidewire mechanism includes a sliding guidewire 401 and a threaded guidewire 402. The surface of the sliding guidewire 401 is slidably connected to the inner wall of the spring permeation tube 101, the inner wall of the end tube 102, and the inner wall of the support tube 105, respectively. The threaded guidewire 402 is fixedly connected to one end of the sliding guidewire 401, and the surface of the threaded guidewire 402 is provided with a pushing external thread. Through the sliding guidewire 401 and the threaded guidewire 402, they can serve as guides and supports during implantation, ensuring that the antibacterial coated ureteral stent can be delivered to the designated position.

[0041] The pushing mechanism includes a pushing tube 501, a pushing sleeve 502, a rubber liquid bladder 503, and anti-slip textures 504. The pushing tube 501 is movably sleeved on the surface of the guide wire 401, the pushing sleeve 502 is fixedly connected to one end of the pushing tube 501, the rubber liquid bladder 503 is fixedly connected to the inner wall of the pushing sleeve 502, and the anti-slip textures 504 are formed on the inner wall of the rubber liquid bladder 503.

[0042] The pushing mechanism also includes a connecting pipe 505, an external cavity 506, an external head 507, a liquid guide tube 508, a switch valve 509, an extension hose 510, and a sleeve 511. The connecting pipe 505 is fixedly connected to the end of the pushing tube 501 away from the pushing sleeve 502. The external cavity 506 is opened inside the connecting pipe 505. The external head 507 is integrally set on the surface of the connecting pipe 505 and is connected to the external cavity 506. The liquid guide tube 508 is fixedly connected to the inside of the pushing tube 501, and the external cavity 506 is connected to the rubber liquid bladder 503 through the liquid guide tube 508. The switch valve 509 is installed on the surface of the external head 507. The extension hose 510 is fixedly connected to one end of the external head 507, and the sleeve 511 is fixedly connected to one end of the extension hose 510.

[0043] The pushing mechanism also includes an adjusting cylinder 512, a flexible groove 513, threaded pads 514, and a damping ring 515. The adjusting cylinder 512 is rotatably connected to one end of the connecting pipe 505 via a bearing. The flexible groove 513 is embedded in the surface of the adjusting cylinder 512. There are two threaded pads 514, and both threaded pads 514 are fixedly connected to the inside of the flexible groove 513. The inner surfaces of both threaded pads 514 are provided with intermittent internal threads. The two threaded pads 514 are threadedly connected to the threaded guide wire 402 through the intermittent internal threads and the pushing external threads. The damping ring 515 is fixedly connected to the inside of the adjusting cylinder 512, and the inner surface of the damping ring 515 is connected to the threaded guide wire 402. The surface sliding connection of 02, through the provided push tube 501, push sleeve 502, rubber liquid bladder 503, anti-slip texture 504, connecting tube 505, external cavity 506, external head 507, liquid guide tube 508, switch valve 509, extension hose 510, sleeve 511, adjusting cylinder 512, flexible groove 513, threaded pad 514 and damping ring 515, can form a fixed position when installing the antibacterial coated ureteral stent. It is convenient to control the position of the antibacterial coated ureteral stent by pushing and pulling the push tube 501. At the same time, through the cooperation of the adjusting cylinder 512 and threaded pad 514 with the threaded guide wire 402, it is convenient to achieve fine adjustment of the position of the antibacterial coated ureteral stent.

[0044] Working principle:

[0045] During implantation, the guidewire 401 is first pushed into the designated location within the kidney from the patient's urethra. Then, a single-J or double-J tube is fitted over the guidewire 401, positioning the spiral-wound fixed end tube 202 close to the kidney. Next, the push tube 501 is fitted over the guidewire 401. After the push tube 501 is in place, the straight fixed end tube 302 of the single-J tube or the spiral-wound fixed end tube 202 of the double-J tube is inserted into the rubber balloon 503. Then, saline solution is injected through the syringe tip 511. During injection, the valve 509 is opened, and the saline solution flows along the extension tubing 510. Enter the external end 507, and then enter the rubber liquid bladder 503 through the liquid guide tube 508 from the external end 507 to make it expand. After the rubber liquid bladder 503 expands, it forms an inward compression and fixation. Then close the switch valve 509, thereby stably connecting the straight fixed end tube 302 or the spiral fixed end tube 202. Then manually push the push tube 501 to push the support main tube 105 into the position close to the specified position. Because the flexible groove 513 makes the adjusting cylinder 512 elastic, the threaded tile 514 can smoothly press the threaded guide wire 402 and slide in when the adjusting cylinder 512 is not pressed.

[0046] After the support tube 105 approaches the designated position, the adjusting cylinder 512 needs to be twisted and pushed slowly to adjust the position of the vortex fixed end tube 202. When twisting the adjusting cylinder 512, its end needs to be pressed so that the threaded pad 514 engages with the threaded guide wire 402. Then, the adjusting cylinder 512 is twisted at the same time so that the push tube 501 drives the support tube 105 to slowly push and adjust along the sliding guide wire 401 until the vortex fixed end tube 202 reaches the designated position. Then, the pressure on the adjusting cylinder 512 is released, the switch valve 509 is opened, and saline is drawn out through the syringe, causing the rubber bladder 503 to contract. Then, the push tube 501 is slowly pulled out, and then the sliding guide wire 401 is pulled out. After the sliding guide wire 401 is pulled out, the vortex fixed end tube 202 springs back into a vortex shape, and the free end contracts in the middle of the vortex shape to avoid easily irritating the renal pelvis and bladder wall.

[0047] When the patient changes position or moves, the spiral-shaped fixed end tube 202 will contract, ensuring that it forms an adaptive flexible contact with the renal pelvis and bladder wall. At the same time, the elasticity of the spring permeation tube 101 will also cooperate to form an expansion and contraction, further ensuring that the device forms an adaptive mechanism.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An antibacterial coated ureteral stent, characterized in that, The utility model relates to a telescopic liquid permeation mechanism, and belongs to the field of medical devices. The utility model discloses a telescopic liquid permeation mechanism, which comprises a fixing mechanism arranged at both ends of the telescopic liquid permeation mechanism. The telescopic liquid permeation mechanism comprises a spring permeation pipe (101), the fixing mechanism comprises a first end head (201) and a spiral fixed end pipe (202), the spiral fixed end pipe (202) is integrally arranged at one end of the first end head (201), the spiral fixed end pipe (202) is in the shape of a spiral, the free end of the spiral fixed end pipe (202) is retracted in the middle of the spiral, and the spiral fixed end pipe (202) is elastic. The telescopic liquid permeation mechanism further comprises a terminal pipe (102), a threaded male head (103) and a sealing ring (104), the terminal pipe (102) is fixedly connected at one end of the spring permeation pipe (101), the threaded male head (103) is integrally arranged at one end of the terminal pipe (102), and the sealing ring (104) is fixedly sleeved on the surface of the threaded male head (103). The telescopic liquid permeation mechanism further comprises a support main pipe (105), a threaded female head (106), a liquid permeation communication groove (107) and an internal permeation hole (108), the number of the spring permeation pipe (101) is two, the support main pipe (105) is arranged between the two spring permeation pipes (101), the threaded female head (106) is integrally arranged at both ends of the support main pipe (105), the inner walls of the two threaded female heads (106) are provided with butt joint internal threads, the surface of the threaded male head (103) is provided with butt joint external threads, the two threaded female heads (106) are respectively threadedly connected with the two threaded male heads (103), the liquid permeation communication groove (107) is in-situ embedded on the surface of the support main pipe (105), and the internal permeation hole (108) is in-situ embedded on the surface of the liquid permeation communication groove (107).

2. An antibacterial-coated ureteral stent according to claim 1, wherein, The fixing mechanism further comprises a first lower permeation hole (203) and a first anti-skid hole (204), the number of the first end head (201) and the number of the spiral fixed end pipe (202) are both two, the two spiral fixed end pipes (202) are fixedly connected at one end of the two spring permeation pipes (101) away from the support main pipe (105) through the two first end heads (201), the first lower permeation hole (203) is in-situ embedded on the surface of the two first end heads (201), the first anti-skid hole (204) is in-situ embedded on the surface of the free end of the two spiral fixed end pipes (202), and the two first end heads (201), the two spiral fixed end pipes (202), the two first lower permeation holes (203) and the two first anti-skid holes (204) form a double J pipe structure with one telescopic liquid permeation mechanism.

3. The antimicrobial-coated ureteral stent of claim 1, wherein, The fixing mechanism further comprises a first downward infiltration hole (203), a first anti-skid hole (204), a second end head (301), a straight fixing end pipe (302), a second infiltration hole (303), and a second anti-skid hole (304). The number of the first end head (201) and the number of the scroll fixing end pipe (202) are both one. The first downward infiltration hole (203) is formed through the surface of the first end head (201). The first anti-skid hole (204) is formed through the surface of the free end of the scroll fixing end pipe (202). The straight fixing end pipe (302) is integrally arranged at one end of the second end head (301). The number of the second end head (301) and the number of the straight fixing end pipe (302) are both one. The straight fixing end pipe (302) is fixedly connected to one end of one spring infiltration pipe (101) away from the support main pipe (105) through the second end head (301). The scroll fixing end pipe (202) is fixedly connected to one end of another spring infiltration pipe (101) away from the support main pipe (105) through the first end head (201). The second infiltration hole (303) is formed through the surface of the second end head (301). The second anti-skid hole (304) is formed through the surface of the free end of the straight fixing end pipe (302). The straight fixing end pipe (302) is elastic. One first end head (201), one scroll fixing end pipe (202), one first downward infiltration hole (203), one first anti-skid hole (204), one second end head (301), one straight fixing end pipe (302), one second infiltration hole (303), one second anti-skid hole (304), and one telescopic liquid infiltration mechanism form a single J pipe structure.

4. An implant device based on the antibacterial coated ureteral stent of claim 1, characterized in that, It comprises: A guide wire mechanism, the surface of which is provided with a pushing mechanism, and the surface of the guide wire mechanism is slidingly connected with the inner wall of the telescopic liquid infiltration mechanism and the inner wall of the fixing mechanism respectively.

5. An implant device according to claim 4, wherein, The guide wire mechanism comprises a sliding guide wire (401) and a threaded guide wire (402). The surface of the sliding guide wire (401) is slidingly connected with the inner wall of the spring infiltration pipe (101), the inner wall of the terminal pipe (102), and the inner wall of the support main pipe (105) respectively. The threaded guide wire (402) is fixedly connected to one end of the sliding guide wire (401). The surface of the threaded guide wire (402) is provided with a pushing external thread.

6. An implant device according to claim 5, wherein, The pushing mechanism comprises a pushing pipe (501), a pushing sleeve (502), a rubber bladder (503), and an anti-skid pattern (504). The pushing pipe (501) is movably sleeved on the surface of the sliding guide wire (401). The pushing sleeve (502) is fixedly connected to one end of the pushing pipe (501). The rubber bladder (503) is fixedly connected to the inner wall of the pushing sleeve (502). The anti-skid pattern (504) is formed in the inner wall of the rubber bladder (503).

7. An implant device according to claim 6, wherein, The push mechanism further comprises a docking pipe (505), an outer cavity (506), an outer head (507), a liquid guide pipe (508), a switch valve (509), an extension hose (510) and a sleeve head (511), the docking pipe (505) is fixedly connected at one end of the push pipe (501) away from the push sleeve (502), the outer cavity (506) is arranged in the docking pipe (505), the outer head (507) is integrally arranged on the surface of the docking pipe (505), and the outer head (507) is communicated with the outer cavity (506), the liquid guide pipe (508) is fixedly connected in the push pipe (501), and the outer cavity (506) is communicated with the rubber capsule (503) through the liquid guide pipe (508), the switch valve (509) is arranged on the surface of the outer head (507), the extension hose (510) is fixedly connected at one end of the outer head (507), and the sleeve head (511) is fixedly connected at one end of the extension hose (510).

8. An implant device according to claim 7, wherein, The push mechanism further comprises an adjusting cylinder (512), a flexible groove (513), a threaded tile (514) and a damping ring (515), the adjusting cylinder (512) is rotatably connected at one end of the docking pipe (505) through a bearing, the flexible groove (513) is inlaidly arranged on the surface of the adjusting cylinder (512), the number of the threaded tiles (514) is two, and the two threaded tiles (514) are fixedly connected in the flexible groove (513), and the inner surfaces of the two threaded tiles (514) are both provided with intermittent internal threads, and the two threaded tiles (514) are screwed with the threaded guide wire (402) through the intermittent internal threads and the push external threads, and the damping ring (515) is fixedly connected in the adjusting cylinder (512), and the inner surface of the damping ring (515) is slidably connected with the surface of the threaded guide wire (402).

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