Leakage-proof and blockage-proof urinary catheter and application method thereof

Abstract

The application relates to the technical field of medical devices, and relates to an anti-leakage and anti-blocking urinary catheter and an application method thereof.The urinary catheter comprises a urinary catheter body, a first air bag and a second air bag, the urinary catheter body is provided with a liquid outlet cavity, the liquid outlet cavity is provided with a liquid inlet hole, a flushing and medicine injection pipe is connected to the outer wall of the urinary catheter body, the flushing and medicine injection pipe is connected with a sealing plug, the urinary catheter body is provided with an air inlet cavity, the outer wall of one side of the urinary catheter body is connected with an air inflation pipe, the air inflation pipe is connected with an air inflation interface, the first air bag is connected to the outer periphery of the urinary catheter body, the air inlet cavity is provided with a first air inlet hole, the second air bag is connected to the outer periphery of the urinary catheter body, the second air bag is located on the side, away from the liquid inlet hole, of the first air bag, and the air inlet cavity is provided with a second air inlet hole.The first air bag is inflated to abut against the inner wall of a bladder, so that the urinary catheter is prevented from sliding out, the second air bag is inflated to adhere to the inner wall of a urethra, so that the possibility of urine leakage is reduced, liquid medicine is introduced into the liquid outlet cavity and the bladder through the flushing and medicine injection pipe, so that the possibility of blood clots and sundries blocking the urinary catheter is reduced, and the reliability of the urinary catheter is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to a leak-proof and anti-clogging urinary catheter and its application method. Background Technology

[0002] A urinary catheter is an instrument made of natural rubber, silicone rubber, or polyvinyl chloride that can be inserted into the bladder through the urethra to drain urine. A three-lumen urinary catheter (such as the one disclosed in CN206103102U) has a tubular body, one end of which is a guide tube for insertion into the urethra. Near the guide tube is a balloon, which, when inflated, secures the catheter in the urethra and prevents it from dislodging. The other end has three pipe connectors: an inflation connector, a water injection connector, and a urinary catheter connector. The inflation connector is connected to the balloon via an air inlet tube inside the tubular body for inflating the balloon. The water injection connector is connected to the flushing port at the guide tube end via a water injection tube inside the tubular body for bladder irrigation to prevent urinary tract infections. The urinary catheter connector is connected to the tubular body for connecting to a urine bag to drain urine.

[0003] Furthermore, due to the unavoidable gap between the catheter and the urethral opening, long-term indwelling catheterization allows bacteria to easily enter through the urethral opening, leading to urinary tract infections and cystitis. Moreover, because the diameter and number of catheter drainage orifices are limited, the effective drainage channel is often easily blocked by blood clots, stones, or even spasmodic bladder mucosa, resulting in poor drainage. Summary of the Invention

[0004] To address the issues of leakage and blockage that occur with traditional urinary catheters, this application provides a leak-proof and blockage-proof urinary catheter and its application method.

[0005] In the first aspect, this application provides a leak-proof and blockage-proof urinary catheter, which adopts the following technical solution:

[0006] A leak-proof and clog-proof urinary catheter includes a catheter body, a first balloon, and a second balloon. One end of the catheter body has a fluid outlet chamber. An inlet hole is located on the wall of the fluid outlet chamber at the end furthest from the outlet opening, and this inlet hole communicates with the outside. A flushing and medication injection tube is connected to the outer wall of the catheter body at the side furthest from the inlet hole. The flushing and medication injection tube has an inlet channel that communicates with the fluid outlet chamber. A sealing plug is connected to the end of the flushing and medication injection tube furthest from the catheter body. The catheter body has an air inlet chamber. The catheter body is located near the flushing and medication injection tube. An inflation tube is connected to the outer wall of one side of the catheter. The inflation tube has an air inlet channel that is connected to the air inlet chamber. An inflation port is connected to the end of the inflation tube away from the catheter body. The first air bladder is connected to the outer periphery of the catheter body. A first air inlet hole is provided on the wall of the air inlet chamber and is connected to the inner side of the first air bladder. The second air bladder is connected to the outer periphery of the catheter body and is located on the side of the first air bladder away from the inlet hole. A second air inlet hole is provided on the wall of the air inlet chamber and is connected to the inner side of the second air bladder.

[0007] By adopting the above technical solution, air is inflated through the inflation port. The gas enters the inner side of the first and second airbags through the air inlet channel, air inlet chamber, first air inlet hole, and second air inlet hole, causing the first and second airbags to inflate. The outer wall of the first airbag abuts against the inner wall of the bladder, preventing the catheter from slipping out and causing secondary injury to the patient when the catheter is reinserted. The outer wall of the second airbag fits against the inner wall of the urethra, improving the sealing effect between the catheter and the urethra and reducing the possibility of urine leakage. A flushing injection tube is provided, which can be used to introduce medication into the outlet chamber and bladder, reducing the possibility of blood clots and other debris blocking the catheter and improving the reliability of the catheter.

[0008] Preferably, there are several second airbags, which are distributed at intervals along the length of the catheter body, and the number of second air inlets is the same as the number of second airbags and corresponds one-to-one.

[0009] By adopting the above technical solution and setting multiple second balloons, each second balloon can be inflated and fit against the inner wall of the urethra, thereby improving the sealing performance of the entire catheter in the urethra, reducing the occurrence of urine leakage, improving the reliability of the catheter, effectively dispersing the pressure of the second balloons on the inner wall of the urethra, avoiding tissue damage caused by excessive local pressure, and further improving the patient's comfort and safety.

[0010] Preferably, it further includes a funnel and a third balloon. The funnel is connected to the periphery of the catheter body, and the inner wall of the funnel is in contact with the outer wall of the catheter body. The third balloon is connected to the side of the funnel away from the first balloon and is connected to a connecting tube. A third air inlet is provided at the wall of the air inlet cavity, and the end of the connecting tube away from the third balloon is connected to the third air inlet.

[0011] By adopting the above technical solution, the funnel fits against the patient's skin surface to catch small amounts of fluid leaking from the urethra, keeping the environment clean and improving the patient's comfort and user experience. The third balloon allows medical staff to observe and determine whether the first and second balloons are leaking, thus improving the reliability of the catheter.

[0012] Preferably, it further includes a connecting sleeve and a fixing bolt. The connecting sleeve is coaxially connected to the outer periphery of the catheter body. A connecting ring is coaxially connected to the side of the funnel away from the first balloon. The connecting ring is coaxially slidably connected to the outer periphery of the connecting sleeve. The connecting ring is provided with a fixing hole. The fixing bolt is threadedly connected to the fixing hole. One end of the fixing bolt passes through the fixing hole and abuts against the outer wall of the connecting sleeve.

[0013] By adopting the above technical solution, the connection sleeve and fixing bolts allow the funnel to be freely adjusted along the catheter body, and the fixing bolts fix the funnel in the appropriate position, ensuring that the inner wall of the funnel fits tightly against the patient's skin surface, thus improving the applicability and reliability of the catheter.

[0014] Preferably, the device further includes a sealing plate, a first connecting rope, and a first resetting member. The sealing plate is slidably connected to the catheter body, and the sliding direction of the sealing plate is parallel to the length direction of the catheter. The sealing plate is used to close the first air inlet, the second air inlet, or the third air inlet. One end of the first connecting rope is connected to the inner wall of the first balloon, and the other end of the first connecting rope is connected to the sealing plate. The sealing plate has a second connecting hole and a third connecting hole. When the first balloon inflates, the sealing plate closes the first air inlet. The second connecting hole communicates with the second air inlet, and the third connecting hole communicates with the third air inlet. The first resetting member is connected between the sealing plate and the catheter body, and the first resetting member causes the sealing plate to tend to close the second air inlet and the third air inlet.

[0015] By adopting the above technical solution, the sealing plate enables the first, second, and third airbags to be inflated in stages. After the first airbag is inflated, the sealing plate is slid by the first connecting rope to close the first airbag, connecting the second connecting hole and the second air inlet, and connecting the third air inlet with the third air inlet. Then, the second and third airbags are inflated. Before the second and third airbags are fully inflated, the catheter is adjusted so that the first airbag is pressed against the inner wall of the bladder and the funnel is pressed against the patient's skin, thus achieving relative fixation of the catheter and the patient, reducing the possibility of damage to the inner wall of the urethra caused by the swaying of the catheter, and improving the safety of the catheter.

[0016] Preferably, it further includes a second connecting rope and a pull ring, one end of the second connecting rope is connected to the sealing plate, the other end of the second connecting rope passes through the catheter body and extends out of the catheter body, and the pull ring is connected to the other end of the second connecting rope.

[0017] By adopting the above technical solution, a second connecting rope and a pull ring are provided, which makes it convenient to remove the urinary catheter by passing a finger through the pull ring and pulling the second connecting rope, which causes the sealing plate to slide, thereby connecting the first airbag and the air inlet chamber, deflating the first airbag, and improving the convenience of the urinary catheter.

[0018] Preferably, the device further includes a squeezing plate and a second resetting member. A convex ring is coaxially connected to the side of the funnel near the connecting ring. The convex ring is located outside the connecting ring. The third airbag is embedded inside the convex ring. The outer wall of the third airbag is in contact with the inner wall of the convex ring, the outer wall of the connecting ring, and the surface of the funnel near the convex ring. The squeezing plate is coaxially slidably embedded inside the convex ring. The squeezing plate abuts against the surface of the third airbag away from the first airbag. The second resetting member is connected between the squeezing plate and the convex ring. The second resetting member causes the squeezing plate to tend to move closer to the funnel.

[0019] By adopting the above technical solution, when the inner wall of the urethra separates from the outer wall of the second balloon, the squeezing plate squeezes the third balloon under the elastic force of the second reset member, so that the gas in the third balloon enters the second balloon through the third air inlet, the air inlet chamber and the second air inlet, so that the second balloon expands and fits against the inner wall of the urethra, improving the sealing between the catheter and the urethra, reducing the possibility of leakage and improving the reliability of the device.

[0020] Preferably, it also includes a support frame, and the wall of the liquid outlet chamber is provided with an installation groove, and the support frame is embedded in the installation groove.

[0021] By adopting the above technical solution and setting up a support frame, the structural strength of the urinary catheter is improved, the compression of the urinary catheter by urine or gas is reduced, the cross-sectional area of ​​the outlet cavity is reduced, which may lead to the possibility of urinary catheter blockage, and the reliability of the urinary catheter is improved.

[0022] Secondly, this application provides a method for using a leak-proof and blockage-proof urinary catheter, employing the following technical solution:

[0023] A method for using a leak-proof and clog-proof urinary catheter includes the following steps:

[0024] S1: Catheterization: Insert one end of the catheter body near the inlet hole into the bladder through the urethra, and connect the drainage tube to the other end of the catheter body.

[0025] S2: Inflation and Fixation. Inflation is performed through the inflation interface into the inflation tube. Gas enters the first air bladder through the first air inlet, causing the first air bladder to inflate. The first connecting rope pulls the sealing plate, which then seals the first air inlet. The second air inlet connects to the second connecting hole, and the third air inlet connects to the third connecting hole. Pulling the catheter body causes the first air bladder to contact the inner wall of the bladder.

[0026] S3: Adjust the funnel, loosen the fixing bolts, slide the funnel so that the inner wall of the funnel fits against the patient's skin surface, tighten the fixing bolts so that the fixing bolts are pressed against the outer wall of the connecting sleeve.

[0027] S4: Inflate and seal. Continue to inflate the tube. Gas enters the second and third air bladders through the second and third air inlets. The second air bladder fits against the inner wall of the urethra, achieving a seal between the catheter body and the urethra.

[0028] By adopting the above technical solution, the catheter can be placed in a distributed manner, reducing the possibility of injury to the patient during catheter placement and use, and improving the reliability and safety of the catheter.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Inflate through the inflation port. Gas enters the inner side of the first and second air bladders through the air inlet channel, air inlet chamber, first air inlet, and second air inlet, causing the first and second air bladders to inflate. The outer wall of the first air bladder abuts against the inner wall of the bladder to prevent the catheter from slipping out and causing secondary injury to the patient when the catheter is reinserted. The outer wall of the second air bladder fits against the inner wall of the urethra, improving the sealing effect between the catheter and the urethra and reducing the possibility of urine leakage. A flushing injection tube is provided so that medication can be introduced into the outlet chamber and bladder through the flushing injection tube, reducing the possibility of blood clots and other debris blocking the catheter and improving the reliability of the catheter.

[0031] 2. The funnel fits against the patient's skin surface to catch small amounts of fluid leaking from the urethra, keeping the environment clean and improving patient comfort and user experience. The third balloon allows medical staff to observe and determine whether the first and second balloons are leaking, improving the reliability of the catheter.

[0032] 3. The sealing plate allows for the step-by-step inflation of the first, second, and third airbags. After the first airbag is inflated, the sealing plate slides via the first connecting rope, sealing the first airbag and connecting the second connecting hole and the second air inlet, as well as the third air inlet, to inflate the second and third airbags. Before the second and third airbags are fully inflated, the catheter is adjusted so that the first airbag is pressed against the bladder wall and the funnel is against the patient's skin, achieving relative fixation between the catheter and the patient. This reduces the possibility of damage to the urethral wall caused by catheter movement and improves the safety of the catheter. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view of a leak-proof and blockage-proof urinary catheter.

[0034] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0035] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0036] Figure 4 This is a partial structural diagram of the support frame.

[0037] Figure 5 yes Figure 1 Enlarged view of point C in the middle.

[0038] Figure 6 This is a flowchart of the application method for leak-proof and blockage-proof urinary catheters.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Catheter body; 11. Outlet chamber; 12. Inlet port; 13. Fluid infusion tube; 14. Inlet channel; 15. Sealing plug; 16. Air inlet chamber; 17. Inflation tube; 18. Inlet channel; 19. Inflation interface; 110. First air inlet; 111. Second air inlet; 112. Third air inlet; 113. Mounting groove; 114. Connecting groove; 115. First annular groove; 116. Second annular groove; 117. Sliding groove; 118. Connecting groove; 119. Connecting channel;

[0041] 2. First airbag;

[0042] 3. Leak-proof component; 31. Second airbag; 32. Funnel; 321. Connecting ring; 3211. Fixing hole; 3212. Connecting post; 322. Protruding ring; 3221. Third annular groove; 3222. Embedded groove; 33. Third airbag; 331. Connecting pipe; 34. Fixing bolt; 35. Extrusion plate; 351. Groove; 352. Embedded block; 36. Second reset component;

[0043] 4. Connecting sleeve; 41. Limiting groove;

[0044] 5. Enclosure assembly; 51. Enclosure plate; 511. Second connecting hole; 512. Third connecting hole; 513. Connecting block; 52. First connecting rope; 53. First reset component; 54. Second connecting rope; 55. Pull ring;

[0045] 6. Support frame; 61. Support ring; 62. Connecting strip. Detailed Implementation

[0046] The present application will be further described in detail below with reference to the accompanying drawings.

[0047] Reference Figure 1 This application discloses a leak-proof and blockage-proof urinary catheter, comprising a catheter body 1. One end of the catheter body 1 along its length is provided with an outlet cavity 11. An inlet hole 12 is located on the side of the outlet cavity 11 away from its opening. Several inlet holes 12 are provided, spaced apart around the axis of the catheter body 1. In this embodiment, two inlet holes 12 are provided, symmetrically distributed along a direction perpendicular to the axis of the catheter body 1.

[0048] Reference Figure 1 and Figure 2 A flushing and injection tube 13 is fixedly connected to the outer wall of the catheter body 1 along its length, away from the inlet port 12. The flushing and injection tube 13 has an inlet channel 14, which communicates with the outlet chamber 11. A sealing plug 15 is fixedly connected to the end of the flushing and injection tube 13 away from the catheter body 1. The catheter body 1 has an air inlet chamber 16, located on the side of the receiving chamber away from the inlet channel 14. An inflation tube 17 is fixedly connected to the outer wall of the catheter body 1 along its length, near the flushing and injection tube 13. The inflation tube 17 is located on the side of the catheter body 1 away from the flushing and injection tube 13. The inflation tube 17 has an air inlet channel 18, which communicates with the air inlet chamber 16. An inflation port 19 is fixedly connected to the end of the inflation tube 17 away from the catheter body 1.

[0049] Reference Figure 3 and Figure 4A leak-proof and blockage-proof urinary catheter also includes a support frame 6, which includes support rings 61 and connecting strips 62. The wall of the discharge chamber 11 has several mounting grooves 113, which are annular and evenly distributed along the length of the catheter body 1. The number of support rings 61 corresponds to the number of mounting grooves 113, and the support rings 61 are embedded in the mounting grooves 113. The length direction of the connecting strips 62 is parallel to the length direction of the catheter body 1, and the connecting strips 62 are fixedly connected to the support rings 61. There are three connecting strips 62, which are evenly distributed circumferentially around the axis of the support rings 61. The wall of the discharge chamber 11 has connecting grooves 114, the number of which corresponds to the number of supporting strips, and the supporting strips are embedded in the connecting grooves 114.

[0050] Reference Figure 1 and Figure 3 A leak-proof and blockage-proof urinary catheter also includes a first balloon 2. A first annular groove 115 is coaxially provided on the outer periphery of the catheter body 1 near the inlet port 12. The two ends of the first balloon 2 are respectively fixedly connected to the two side walls of the first annular groove 115 along the length of the catheter body 1. When the inner side of the first balloon 2 is not inflated, the outer wall of the first balloon 2 is flush with the outer wall of the catheter body 1. A first air inlet 110 is provided on the wall of the air inlet chamber 16 away from the receiving chamber, and the first air inlet 110 communicates with the inner side of the first balloon 2.

[0051] A leak-proof and anti-clogging catheter also includes a leak-proof component 3. A second annular groove 116 is coaxially provided on the outer wall of the catheter body 1. The second annular groove 116 is located on the side of the first annular groove 115 away from the inlet hole 12. Several second annular grooves 116 are provided, spaced apart along the length direction. In this embodiment, three second annular grooves 116 are provided, evenly distributed along the length direction of the catheter body 1. The leak-proof component 3 includes a second airbag 31. The number of second airbags 31 is the same as the number of second annular grooves 116 and corresponds one-to-one. The two ends of the second airbags 31 are fixedly connected to the two side walls of the second annular grooves 116 along the length direction of the catheter body 1. When the inner side of the second airbag 31 is not inflated, the outer wall of the second airbag 31 is flush with the outer wall of the catheter body 1. The air intake chamber 16 has a second air intake hole 111 on the side of the chamber wall away from the receiving chamber. The number of second air intake holes 111 is the same as the number of second airbags 31 and they correspond one-to-one. The second air intake holes 111 are connected to the inside of the second airbags 31.

[0052] Reference Figure 5A leak-proof and blockage-proof urinary catheter also includes a connecting sleeve 4, which is coaxially fixed to the outer periphery of the catheter body 1. The inner wall of the connecting sleeve 4 is in contact with the outer wall of the catheter body 1, and the connecting sleeve 4 is located on the side of the second balloon 31 away from the first balloon 2. The leak-proof component 3 also includes a funnel 32 and a fixing bolt 34. The funnel 32 is coaxially slidably connected to the outer periphery of the catheter body 1, and the funnel 32 is gradually tapered away from the second balloon 31 along the sliding direction of the funnel 32. The inner wall of the funnel 32 on the side closer to the first balloon 2 is in contact with the outer wall of the catheter body 1. A connecting ring 321 is coaxially fixedly connected to the side of the funnel 32 away from the second balloon 31. The connecting ring 321 is slidably connected to the outer periphery of the connecting sleeve 4, and the inner wall of the connecting ring 321 is in contact with the outer wall of the connecting sleeve 4. A connecting post 3212 is fixedly connected to the side of the connecting ring 321 away from the funnel 32. The length direction of the connecting post 3212 is perpendicular to the sliding direction of the connecting ring 321, and both ends of the connecting post 3212 along its length are located on the inner and outer sides of the connecting ring 321. A limiting groove 41 is provided on the outer wall of the connecting sleeve 4, and the connecting post 3212 is slidably embedded in the limiting groove 41. The sliding direction of the connecting post 3212 is parallel to the sliding direction of the connecting ring 321, and the outer wall of the connecting post 3212 is in contact with the groove wall of the limiting groove 41. A fixing hole 3211 is coaxially provided on the connecting post 3212, and a fixing bolt 34 is threaded into the fixing hole 3211. One end of the fixing bolt 34 passes through the fixing hole 3211 and abuts against the bottom of the limiting groove 41.

[0053] The leak-proof assembly 3 also includes a third airbag 33, a compression plate 35, and a second reset member 36. A protruding ring 322 is coaxially fixed to the outer periphery of the funnel 32 near the connecting ring 321. The protruding ring 322 is located outside the connecting ring 321. The third airbag 33 is embedded inside the protruding ring 322, and the outer wall of the third airbag 33 is in contact with the inner wall of the protruding ring 322, the outer wall of the connecting ring 321, and the surface of the funnel 32 away from the second airbag 31. The compression plate 35 is coaxially slidably embedded inside the protruding ring 322. A third annular groove 3221 is provided on the inner wall of the protruding ring 322 at the end away from the funnel 32. The compression plate 35 is slidably embedded in the third annular groove 3221, and the outer wall of the compression plate 35 is in contact with the groove wall of the third annular groove 3221. A groove 351 is provided on the side of the compression plate 35 near the funnel 32, and the outer wall of the third airbag 33 abuts against the bottom of the groove 351. The convex ring 322 is provided with a plurality of grooves 3222, which are located outside the third annular groove 3221 and are connected to the third annular groove 3221. The grooves 3222 extend along the axial direction of the convex ring 322, and the plurality of grooves 3222 are circumferentially spaced around the axial direction of the convex ring 322. In this embodiment, there are four grooves 3222, which are evenly distributed circumferentially around the axial direction of the convex ring 322. An insert 352 is fixedly connected to the outer periphery of the extrusion plate 35. The number of inserts 352 and the number of second reset members 36 are the same as the number of grooves 3222 and correspond one-to-one. The inserts 352 are slidably embedded in the grooves 3222, and the sliding direction of the inserts 352 is parallel to the sliding direction of the extrusion plate 35. The second reset members 36 are connected between the convex ring 322 and the inserts 352, and the second reset members 36 make the extrusion plate 35 tend to move closer to the funnel 32. In this embodiment, the second reset member 36 is a spring. One end of the second reset member 36 is connected to the groove wall of the groove 3222 near the funnel 32, and the other end of the second reset member 36 is connected to the surface of the insert 352 near the funnel 32. The third airbag 33 is fixedly connected to the side away from the funnel 32 by a connecting tube 331. The air inlet chamber 16 is provided with a third air inlet 112 on the side wall away from the receiving chamber. The third air inlet 112 is located on the side of the connecting sleeve 4 away from the second airbag 31. The other end of the connecting tube 331 passes through the compression plate 35 and is fixedly connected to the outer wall of the catheter body 1. The connecting tube 331 is connected to the third air inlet 112.

[0054] Reference Figure 1 and Figure 3 A leak-proof and clog-proof urinary catheter also includes a sealing component 5, which includes a sealing plate 51. The catheter body 1 has a groove 117, which communicates with a first air inlet 110, a second air inlet 111, and a third air inlet 112. The sealing plate 51 is slidably embedded in the groove 117, with the sliding direction of the sealing plate 51 parallel to the length direction of the catheter body 1, and the sidewall of the sealing plate 51 abutting against the groove wall of the groove 117. The sealing plate 51 is used to seal the first air inlet 110, the second air inlet 111, or the third air inlet 112.

[0055] Reference Figure 3 and Figure 5 The sealing plate 51 is provided with a second connecting hole 511 and a third connecting hole 512. The number of second connecting holes 511 is the same as the number of second air inlets 111 and they correspond one-to-one. The second connecting holes 511 are used to communicate with the second air inlets 111, and the third connecting holes 512 are used to communicate with the third air inlets 112. When the first airbag 2 inflates, the sealing plate 51 closes the first air inlet 110, the second connecting holes 511 communicate with the second air inlets 111, and the third connecting holes 512 communicate with the third air inlets 112. A connecting groove 118 is provided on the side wall of the slide groove 117 away from the air inlet chamber 16. A connecting block 513 is fixedly connected to the surface of the sealing plate 51 away from the air inlet chamber 16. The connecting block 513 is slidably embedded in the connecting groove 118, and the sliding direction of the connecting block 513 is parallel to the sliding direction of the sealing plate 51. The sealing assembly 5 also includes a first connecting rope 52. One end of the first connecting rope 52 is fixedly connected to the inner wall of the first airbag 2, and the other end of the first connecting rope 52 is fixedly connected to the side surface of the connecting block 513 near the liquid inlet hole 12.

[0056] Reference Figure 5 The sealing assembly 5 also includes a first reset member 53, a second connecting rope 54, and a pull ring 55. One end of the second connecting rope 54 is fixedly connected to the end of the sealing plate 51 away from the inlet hole 12. A connecting channel 119 is provided on the side wall of the groove 117 away from the inlet hole 12. The connecting channel 119 is connected to the outside. The end of the connecting channel 119 away from the groove 117 is located on the side of the third air inlet hole 112 away from the connecting sleeve 4. The other end of the second connecting rope 54 passes through the connecting channel 119 and extends out of the catheter body 1. The pull ring 55 is fixedly connected to the end of the second connecting rope 54 away from the sealing plate 51. The pull ring 55 is used for inserting a finger. The first reset member 53 is connected between the sealing plate 51 and the catheter body 1. The first reset member 53 makes the sealing plate 51 tend to close the second air inlet hole 111 and the third air inlet hole 112. In this embodiment, the first reset member 53 is a spring. The first reset member 53 is sleeved on the outer periphery of the second connecting rope 54. One end of the first reset member 53 is connected to the end of the sealing plate 51 away from the liquid inlet hole 12, and the other end of the first reset member 53 is connected to the side wall of the slide groove 117 away from the liquid inlet hole 12.

[0057] The implementation principle of the anti-leakage and anti-blockage catheter in this application embodiment is as follows: When in use, the end of the catheter body 1 near the inlet hole 12 is inserted into the bladder through the urethra and inflated through the inflation port 19. The gas enters the inside of the first airbag 2 through the air inlet channel 18, the air inlet chamber 16 and the first air inlet hole 110. The first airbag 2 inflates and the sealing plate 51 is slid by pulling the connecting rope. When the sealing plate 51 closes the first air inlet hole 110, the second connecting hole 511 and the second air inlet hole 111 are connected, and the third connecting hole 512 is connected to the third air inlet hole 112.

[0058] As ventilation continues, the second airbag 31 and the third airbag 33 inflate. The outer wall of the second airbag 31 adheres to the inner wall of the urethra, and the third airbag 33 pushes the compression plate 35 to overcome the elastic sliding of the second reset member 36.

[0059] Loosen the fixing bolt 34, slide the funnel 32 closer to the patient so that the funnel 32 fits against the patient's skin surface, tighten the fixing bolt 34 so that the fixing bolt 34 presses against the bottom of the limiting groove 41, thereby achieving relative fixation of the funnel 32 and the connecting sleeve 4.

[0060] When the urethra dilates, the pressure on the second airbag 31 decreases, and the squeezing plate 35 slides and squeezes the third airbag 33 under the action of the elastic force of the second reset member 36, so that the gas in the third airbag 33 enters the second airbag 31 through the third air inlet 112, the air inlet chamber 16 and the second air inlet 111, so that the outer wall of the second airbag 31 remains in contact with the inner wall of the urethra.

[0061] When the catheter needs to be removed, air is drawn out through the inflation port 19, and the second airbag 31 and the third airbag 33 contract. After the second airbag 31 and the third airbag 33 are fully contracted, the second connecting rope 54 is pulled by the pull ring 55, which causes the sealing plate 51 to slide, so that the inner side of the first airbag 2 is connected to the air inlet chamber 16 through the first air inlet 110. The inflation port 19 continues to draw air, so that the first airbag 2 is embedded in the first ring groove 115, and then the catheter body 1 is pulled out.

[0062] Reference Figure 6 This application also discloses a method for using a leak-proof and blockage-proof urinary catheter, including the following steps:

[0063] S1: Insert the catheter, insert one end of the catheter body 1 near the inlet hole 12 into the bladder through the urethra, and connect the drainage tube to the other end of the catheter body 1;

[0064] S2: Inflate and fix. Inflate the inflation tube 17 through the inflation port 19. The gas enters the first airbag 2 through the first air inlet 110. The first airbag 2 inflates. The sealing plate 51 is pulled to slide through the first connecting rope 52. The sealing plate 51 seals the first air inlet 110. The second air inlet 111 is connected to the second connecting hole 511. The third air inlet 112 is connected to the third connecting hole 512. Pull the catheter body 1 so that the first airbag 2 abuts against the inner wall of the bladder.

[0065] S3: Adjust the funnel 32, loosen the fixing bolt 34, slide the funnel 32 so that the inner wall of the funnel 32 fits against the patient's skin surface, tighten the fixing bolt 34 so that the fixing bolt 34 abuts against the outer wall of the connecting sleeve 4.

[0066] S4: Inflate and seal. Continue to inflate the inflation tube 17. The gas enters the second air bladder 31 and the third air bladder 33 through the second air inlet 111 and the third air inlet 112. The second air bladder 31 fits against the inner wall of the urethra to achieve a seal between the catheter body 1 and the urethra.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A leak-proof and clog-proof urinary catheter, characterized in that: The catheter includes a catheter body (1), a first balloon (2), and a second balloon (31). One end of the catheter body (1) has an outlet chamber (11). An inlet hole (12) is located on the wall of the outlet chamber (11) away from its opening. The inlet hole (12) communicates with the outside. A flushing injection tube (13) is connected to the outer wall of the catheter body (1) away from the inlet hole (12). The flushing injection tube (13) has an inlet channel (14). The inlet channel (14) communicates with the outlet chamber (11). A sealing plug (15) is connected to the end of the flushing injection tube (13) away from the catheter body (1). The catheter body (1) has an air inlet chamber (16). The outer wall of the catheter body (1) near the flushing injection tube (13) is connected to... An inflation tube (17) is connected; the inflation tube (17) is provided with an air inlet channel (18); the air inlet channel (18) is connected to the air inlet chamber (16); the end of the inflation tube (17) away from the catheter body (1) is connected to an inflation port (19); the first air bladder (2) is connected to the outer periphery of the catheter body (1); the air inlet chamber (16) is provided with a first air inlet hole (110) at the cavity wall; the first air inlet hole (110) is connected to the inner side of the first air bladder (2); the second air bladder (31) is connected to the outer periphery of the catheter body (1); the second air bladder (31) is located on the side of the first air bladder (2) away from the liquid inlet hole (12); the air inlet chamber (16) is provided with a second air inlet hole (111) at the cavity wall; the second air inlet hole (111) is connected to the inner side of the second air bladder (31); It also includes a funnel (32) and a third airbag (33); the third airbag (33) is connected to the side of the funnel (32) away from the first airbag (2); the third airbag (33) is connected to a connecting tube (331); the air inlet chamber (16) is provided with a third air inlet (112) at the cavity wall; the end of the connecting tube (331) away from the third airbag (33) is connected to the third air inlet (112); The funnel (32) is coaxially connected to a connecting ring (321) on the side away from the first airbag (2); It also includes a squeezing plate (35) and a second reset member (36); the funnel (32) is coaxially connected to a convex ring (322) on the side near the connecting ring (321); the convex ring (322) is located outside the connecting ring (321); the third airbag (33) is embedded inside the convex ring (322); the outer wall of the third airbag (33) is in contact with the inner wall of the convex ring (322), the outer wall of the connecting ring (321) and the surface of the funnel (32) near the convex ring (322); the squeezing plate (35) is coaxially slidably embedded inside the convex ring (322); the squeezing plate (35) abuts against the surface of the third airbag (33) away from the first airbag (2); the second reset member (36) is connected between the squeezing plate (35) and the convex ring (322); the second reset member (36) makes the squeezing plate (35) tend to approach the funnel (32).

2. The leak-proof and blockage-proof urinary catheter according to claim 1, characterized in that: The second airbag (31) is provided in a plurality of them; the plurality of second airbags (31) are distributed at intervals along the length direction of the catheter body (1); the number of second air inlets (111) is the same as the number of second airbags (31) and corresponds one to one.

3. The leak-proof and blockage-proof urinary catheter according to claim 1, characterized in that: The funnel (32) is connected to the outer periphery of the catheter body (1); the inner wall of the funnel (32) is in contact with the outer wall of the catheter body (1).

4. The leak-proof and blockage-proof urinary catheter according to claim 3, characterized in that: It also includes a connecting sleeve (4) and a fixing bolt (34); the connecting sleeve (4) is coaxially connected to the outer periphery of the catheter body (1); the connecting ring (321) is coaxially slidably connected to the outer periphery of the connecting sleeve (4); the connecting ring (321) is provided with a fixing hole (3211); the fixing bolt (34) is threadedly connected to the fixing hole (3211); one end of the fixing bolt (34) passes through the fixing hole (3211) and abuts against the outer wall of the connecting sleeve (4).

5. The leak-proof and blockage-proof urinary catheter according to claim 4, characterized in that: It also includes a sealing plate (51), a first connecting rope (52), and a first resetting member (53); the sealing plate (51) is slidably connected to the catheter body (1); the sliding direction of the sealing plate (51) is parallel to the length direction of the catheter; the sealing plate (51) is used to close the first air inlet (110), the second air inlet (111), or the third air inlet (112); one end of the first connecting rope (52) is connected to the inner wall of the first airbag (2); the other end of the first connecting rope (52) is connected to the sealing plate (51); the sealing plate (51) is provided with a first The first airbag (2) has two connecting holes (511) and a third connecting hole (512). When the first airbag (2) is inflated, the sealing plate (51) closes the first air inlet (110). The second connecting hole (511) is connected to the second air inlet (111). The third connecting hole (512) is connected to the third air inlet (112). The first reset member (53) is connected between the sealing plate (51) and the catheter body (1). The first reset member (53) makes the sealing plate (51) tend to close the second air inlet (111) and the third air inlet (112).

6. The leak-proof and blockage-proof urinary catheter according to claim 5, characterized in that: It also includes a second connecting rope (54) and a pull ring (55); one end of the second connecting rope (54) is connected to the sealing plate (51); the other end of the second connecting rope (54) passes through the catheter body (1) and extends out of the catheter body (1); the pull ring (55) is connected to the other end of the second connecting rope (54).

7. The leak-proof and blockage-proof urinary catheter according to claim 1, characterized in that: It also includes a support frame (6); the wall of the liquid outlet chamber (11) is provided with an installation groove (113); the support frame (6) is embedded in the installation groove (113).

Images