Leakage-proof and anti-blocking catheter and application method thereof

Abstract

The invention relates to the technical field of medical instruments, in particular to a leakage-proof and anti-blocking catheter and an application method thereof, the leakage-proof and anti-blocking catheter comprises a catheter body, a first air bag and a second air bag, the catheter body is provided with a liquid outlet cavity, the liquid outlet cavity is provided with a liquid inlet hole, the outer wall of the catheter body is connected with a flushing medicine injection pipe, the flushing medicine injection pipe is connected with a sealing plug, and the catheter body is provided with an air inlet cavity; the outer wall of one side of the catheter body is connected with an inflation tube, the inflation tube is connected with an inflation connector, the first air bag is connected to the periphery of the catheter body, the air inlet cavity is provided with a first air inlet hole, the second air bag is connected to the periphery of the catheter body and 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 expands to abut against the inner wall of the bladder to prevent the catheter from sliding out, the second air bag expands to be attached to the inner wall of the urethra, the possibility of urine leakage is reduced, liquid medicine is introduced into the liquid outlet cavity and the bladder by flushing the medicine injection pipe, the possibility that the catheter is blocked by impurities such as blood clots is reduced, and the reliability of the catheter is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a leak-proof and blockage-proof urinary catheter and an application method thereof. Background Art

[0002] A urinary catheter is an instrument made of natural rubber, silicone rubber or polyvinyl chloride, which can be inserted into the bladder through the urethra to drain urine. A three-chamber urinary catheter (such as a three-chamber urinary catheter disclosed in the announcement number CN206103102U) has a tubular body, one end of which is a guide tube head for insertion into the urethra, and a balloon is arranged near the guide tube head. When the balloon is inflated, the catheter is fixed in the urethra and is not easy to fall out; the other end is provided with three pipe joints, namely, an inflation joint, a water injection joint and a urinary catheter joint. The inflation joint is connected to the airbag through the airbag ventilation pipe in the tubular body, which is used to inflate the airbag. The water injection joint is connected to the flushing port at the end of the guide tube head through the water injection pipe in the tubular body, which is used for bladder flushing to prevent urinary tract infection. The urinary catheter joint is connected to the tubular body and is used to connect a urine bag to discharge urine.

[0003] In addition, due to the inevitable gap between the catheter and the urethra, long-term indwelling of the catheter can easily allow bacteria to enter through the urethra, causing urinary tract infection and cystitis. And due to the limited diameter and number of drainage openings in the catheter, 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] In order to improve the problem of urine leakage and blockage during the use of traditional urinary catheters, the present application provides a leak-proof and blockage-proof urinary catheter and an application method thereof.

[0005] In a first aspect, the present application provides a leak-proof and blockage-proof urinary catheter, which adopts the following technical solution: A leak-proof and blockage-proof urinary catheter comprises a urinary catheter body, a first air bag and a second air bag, wherein a liquid outlet cavity is arranged at one end of the urinary catheter body, a liquid inlet hole is arranged at a cavity wall at one end of the urinary catheter body away from a cavity opening of the urinary catheter body, the liquid inlet hole is communicated with the outside, a flushing and injection tube is connected to an outer wall of the urinary catheter body away from a side of the liquid inlet hole, the flushing and injection tube is provided with a liquid inlet channel, the liquid inlet channel is communicated with the liquid outlet cavity, a sealing plug is connected to an end of the flushing and injection tube away from the urinary catheter body, the urinary catheter body is provided with an air inlet cavity, and the urinary catheter body is close to the flushing and injection tube. An inflation tube is connected to the outer wall of one side of the tube, and the inflation tube is provided with an air inlet channel, and the air inlet channel is connected to the air inlet cavity. An inflation interface is connected to the end of the inflation tube away from the catheter body. The first air bag is connected to the outer periphery of the catheter body, and a first air inlet hole is provided on the wall of the air inlet cavity, and the first air inlet hole is connected to the inner side of the first air bag. The second air bag is connected to the outer periphery of the catheter body, and the second air bag is located on the side of the first air bag away from the liquid inlet hole. A second air inlet hole is provided on the wall of the air inlet cavity, and the second air inlet hole is connected to the inner side of the second air bag.

[0006] By adopting the above technical solution, air is inflated from the inflation interface, and the gas enters the inner sides of the first and second airbags through the air inlet channel, the air inlet cavity, the first air inlet hole and the second air inlet hole, so that the first and second airbags expand, and the outer wall of the first airbag abuts against the inner wall of the bladder to prevent the catheter from slipping out and reinserting the catheter to cause secondary injury to the patient. The outer wall of the second airbag fits against the inner wall of the urethra to improve the sealing effect between the catheter and the urethra and reduce the possibility of urine leakage. A flushing and injection tube is provided, and liquid medicine can be introduced into the liquid outlet cavity and the bladder through the flushing and injection tube to reduce the possibility of blood clots and other debris clogging the catheter and improve the reliability of the catheter.

[0007] Preferably, a plurality of the second airbags are provided, and the plurality of the second airbags are spaced apart along the length direction of the catheter body, and the number of the second air inlet holes is the same as the number of the second airbags and corresponds one to one.

[0008] By adopting the above technical solution, multiple second airbags are provided, so that each second airbag fits the inner wall of the urethra after expansion, thereby improving the sealing performance of the entire catheter in the urethra, reducing the occurrence of urine leakage, improving the reliability of the catheter, and effectively dispersing the pressure of the second airbag on the inner wall of the urethra, avoiding tissue damage caused by excessive local pressure, and further improving the comfort and safety of the patient.

[0009] Preferably, it also includes a funnel and a third air bag, the funnel is connected to the periphery of the catheter body, the inner wall of the funnel is in contact with the outer wall of the catheter body, the third air bag is connected to the side of the funnel away from the first air bag, the third air bag is connected to a connecting tube, a third air inlet hole is provided on the wall of the air inlet cavity, and one end of the connecting tube away from the third air bag is connected to the third air inlet hole.

[0010] By adopting the above technical solution, the funnel fits the patient's skin surface and is used to receive a small amount of fluid leaked from the urethra, thereby keeping the environment clean and tidy, and improving the patient's comfort and usage experience. The third airbag is convenient for medical staff to observe and judge whether the first airbag and the second airbag are leaking, thereby improving the reliability of the catheter.

[0011] Preferably, it also includes a connecting sleeve and a fixing bolt, the connecting sleeve is coaxially connected to the outer periphery of the catheter body, the side of the funnel away from the first airbag is coaxially connected to a connecting ring, 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, and one end of the fixing bolt passes through the fixing hole and then presses against the outer wall of the connecting sleeve.

[0012] By adopting the above technical solution, the setting of the connecting sleeve and the fixing bolt enables the funnel to freely adjust its position along the catheter body, and the funnel is fixed in an appropriate position by the fixing bolt, ensuring that the inner wall of the funnel closely fits the patient's skin surface, thereby improving the applicability and reliability of the catheter.

[0013] Preferably, it also includes a closing plate, a first connecting rope and a first resetting member, the closing plate being slidably connected to the catheter body, the sliding direction of the closing plate being parallel to the length direction of the catheter, the closing plate being used to close the first air inlet hole, the second air inlet hole or the third air inlet hole, one end of the first connecting rope being connected to the inner wall of the first airbag, the other end of the first connecting rope being connected to the closing plate, the closing plate being provided with a second connecting hole and a third connecting hole, when the first airbag is inflated, the closing plate closes the first air inlet hole, the second connecting hole is connected to the second air inlet hole, and the third connecting hole is connected to the third air inlet hole, the first resetting member is connected between the closing plate and the catheter body, and the first resetting member enables the closing plate to have a tendency to close the second air inlet hole and the third air inlet hole.

[0014] By adopting the above technical solution, the closing plate realizes the step-by-step inflation of the first airbag, the second airbag and the third airbag. When the inflation of the first airbag is completed, the closing plate is driven to slide by the first connecting rope to realize the closure of the first airbag, so that the second connecting hole is connected to the second air inlet hole, and the third air inlet hole is connected to the third air inlet hole, and then the second airbag and the third airbag are inflated. Before the second airbag and the third airbag are fully expanded, the urinary catheter is first 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, so that the urinary catheter and the patient are relatively fixed, the possibility of damage to the inner wall of the urethra caused by the shaking of the catheter is reduced, and the safety of the catheter is improved.

[0015] Preferably, it further comprises a second connecting rope and a pull ring, wherein one end of the second connecting rope is connected to the closing plate, the other end of the second connecting rope passes through the catheter body and then extends out of the catheter body, and the pull ring is connected to the other end of the second connecting rope.

[0016] By adopting the above technical solution, a second connecting rope and a pull ring are provided, so that when the catheter needs to be taken out, the finger can pass through the pull ring, pull the second connecting rope, drive the closing plate to slide, realize the connection between the first airbag and the air inlet cavity, deflate the first airbag, and improve the convenience of the catheter.

[0017] Preferably, it also includes an extrusion plate and a second reset member, the funnel is coaxially connected with a convex ring on one side close to the connecting ring, the convex ring is located on the outside of the connecting ring, the third airbag is embedded in the inner side of 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 one side of the funnel close to the convex ring, the extrusion plate is coaxially slidably embedded in the inner side of the convex ring, the extrusion plate abuts against the surface of one side of the third airbag away from the first airbag, the second reset member is connected between the extrusion plate and the convex ring, and the second reset member makes the extrusion plate tend to approach the funnel.

[0018] By adopting the above technical solution, when the inner wall of the urethra is separated from the outer wall of the second airbag, the extrusion plate squeezes the third airbag under the action of the elastic force of the second reset member, so that the gas in the third airbag enters the second airbag through the third air inlet hole, the air inlet cavity and the second air inlet hole, so that the second airbag expands and fits the inner wall of the urethra, thereby improving the sealing between the catheter and the urethra, reducing the possibility of urine leakage, and improving the reliability.

[0019] Preferably, it further comprises a support frame, a mounting groove is provided on the wall of the liquid outlet cavity, and the support frame is embedded in the mounting groove.

[0020] By adopting the above technical solution and setting a support frame, the structural strength of the catheter is improved, the possibility of urine or gas squeezing the catheter is reduced, the cross-sectional area of ​​the liquid outlet cavity is reduced, and the possibility of catheter blockage is improved, thereby improving the reliability of the catheter.

[0021] In a second aspect, the present application provides an application method of a leak-proof and blockage-proof urinary catheter, which adopts the following technical solution: An application method of a leak-proof and blockage-proof urinary catheter comprises the following steps: S1: Insert the catheter into the bladder through the urethra at the end of the catheter body close to the inlet hole, and connect the drainage tube to the other end of the catheter body. S2: Inflate and fix. Inflate the inflation tube through the inflation interface. The gas enters the first airbag through the first air inlet hole. The first airbag expands. The first connecting rope is used to pull the closing plate to slide. The closing plate seals the first air inlet hole. The second air inlet hole is connected to the second connecting hole. The third air inlet hole is connected to the third connecting hole. Pull the catheter body so that the first airbag abuts against the inner wall of the bladder. S3: Adjust the funnel, loosen the fixing bolts, slide the funnel so that the inner wall of the funnel fits the patient's skin surface, and tighten the fixing bolts so that the fixing bolts are against the outer wall of the connecting sleeve. S4: Inflate and seal. Continue to inflate the inflation tube. The gas enters the second air bag and the third air bag through the second air inlet hole and the third air inlet hole. The second air bag fits the inner wall of the urethra to achieve sealing between the catheter body and the urethra.

[0022] By adopting the above technical solution, the placement of the catheter is achieved through distributed operations, the possibility of causing damage to the patient during the placement and use of the catheter is reduced, and the reliability and safety of the catheter are improved.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Inflate from the inflation interface, and the gas enters the inner side of the first airbag and the second airbag through the air inlet channel, the air inlet cavity, the first air inlet hole and the second air inlet hole, so that the first airbag and the second airbag expand, and the outer wall of the first airbag abuts against the inner wall of the bladder to prevent the catheter from slipping out and reinserting the catheter to cause secondary damage to the patient. The outer wall of the second airbag fits the inner wall of the urethra to improve the sealing effect between the catheter and the urethra and reduce the possibility of urine leakage. A flushing and injection tube is provided, and liquid medicine can be introduced into the liquid outlet cavity and the bladder through the flushing and injection tube to reduce the possibility of blood clots and other debris blocking the catheter and improve the reliability of the catheter; 2. The funnel fits the patient's skin surface and is used to receive a small amount of fluid leaking from the urethra, keeping the environment clean and tidy, and improving the patient's comfort and user experience. The third airbag is convenient for medical staff to observe and judge whether the first and second airbags are leaking, thereby improving the reliability of the catheter; 3. The closing plate realizes the step-by-step inflation of the first airbag, the second airbag and the third airbag. When the inflation of the first airbag is completed, the closing plate is driven to slide by the first connecting rope to realize the closure of the first airbag, so that the second connecting hole is connected to the second air inlet hole, and the third air inlet hole is connected to the third air inlet hole, and then the second airbag and the third airbag are inflated. Before the second airbag and the third airbag are fully inflated, the urinary catheter is first 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, so as to realize the relative fixation of the urinary catheter and the patient, reduce the possibility of damage to the inner wall of the urethra caused by the shaking of the catheter, and improve the safety of the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a cross-sectional view of a leak-proof and blockage-proof urinary catheter.

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0026] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0027] Figure 4 It is a schematic diagram of the local structure of the support frame.

[0028] Figure 5 yes Figure 1 Enlarged view of point C in the middle.

[0029] Figure 6 It is a flow chart of the method for using a leak-proof and blockage-proof urinary catheter.

[0030] Description of reference numerals: 1. Catheter body; 11. Liquid outlet cavity; 12. Liquid inlet hole; 13. Flushing and injection tube; 14. Liquid inlet channel; 15. Sealing plug; 16. Air inlet cavity; 17. Inflating tube; 18. Air inlet channel; 19. Inflating interface; 110. First air inlet hole; 111. Second air inlet hole; 112. Third air inlet hole; 113. Mounting groove; 114. Connecting groove; 115. First annular groove; 116. Second annular groove; 117. Sliding groove; 118. Connecting groove; 119. Connecting channel; 2. First airbag; 3. Anti-leakage assembly; 31. Second airbag; 32. Funnel; 321. Connecting ring; 3211. Fixing hole; 3212. Connecting column; 322. Protruding ring; 3221. Third ring groove; 3222. Embedded groove; 33. Third airbag; 331. Connecting pipe; 34. Fixing bolt; 35. Extrusion plate; 351. Groove; 352. Embedded block; 36. Second reset member; 4. Connecting sleeve; 41. Limiting groove; 5. Closing assembly; 51. Closing plate; 511. Second connecting hole; 512. Third connecting hole; 513. Connecting block; 52. First connecting rope; 53. First resetting member; 54. Second connecting rope; 55. Pull ring; 6. Support frame; 61. Support ring; 62. Connecting strip. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] Reference Figure 1The embodiment of the present application discloses a leak-proof and anti-blocking catheter, including a catheter body 1, a catheter body 1, a liquid outlet cavity 11 is provided at one end of the catheter body 1 along the length direction, a liquid inlet hole 12 is provided at one side of the liquid outlet cavity 11 away from the cavity opening of the liquid outlet cavity 11, a plurality of liquid inlet holes 12 are provided, and the plurality of liquid inlet holes 12 are distributed at intervals around the axis direction of the catheter body 1. In this embodiment, two liquid inlet holes 12 are provided, and the two liquid inlet holes 12 are symmetrically distributed along the direction perpendicular to the axis direction of the catheter body 1.

[0033] Reference Figure 1 and Figure 2 A flushing and injection tube 13 is fixedly connected to the outer wall of the catheter body 1 on the side away from the liquid inlet hole 12 along the length direction of the catheter. The flushing and injection tube 13 is provided with a liquid inlet channel 14, which is connected to the liquid outlet cavity 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 is provided with an air inlet cavity 16, which is located on the side of the accommodating cavity away from the liquid inlet channel 14. An inflation tube 17 is fixedly connected to the outer wall of the catheter body 1 on the side close to the flushing and injection tube 13 along the length direction of the catheter body 1. 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 is provided with an air inlet channel 18, which is connected to the air inlet cavity 16. An inflation interface 19 is fixedly connected to the end of the inflation tube 17 away from the catheter body 1.

[0034] Reference Figure 3 and Figure 4 , a leak-proof and anti-blocking catheter also includes a support frame 6, and the support frame 6 includes a support ring 61 and a connecting strip 62. A plurality of mounting grooves 113 are provided at the wall of the liquid outlet cavity 11, and the mounting grooves 113 are annular, and the plurality of mounting grooves 113 are evenly distributed along the length direction of the catheter body 1. The number of the support rings 61 is the same as the number of the mounting grooves 113 and corresponds one to one. The support rings 61 are embedded in the mounting grooves 113, and the length direction of the connecting strip 62 is parallel to the length direction of the catheter body 1. The connecting strip 62 is fixedly connected to the plurality of support rings 61, and three connecting strips 62 are provided, and the three supporting strips are evenly distributed circumferentially around the axis of the support ring 61. A connecting groove 114 is provided at the wall of the liquid outlet cavity 11, and the number of the connecting grooves 114 is the same as the number of the supporting strips and corresponds one to one. The supporting strips are embedded in the connecting grooves 114.

[0035] Reference Figure 1 and Figure 3A leak-proof and anti-blocking urinary catheter also includes a first airbag 2. A first annular groove 115 is coaxially arranged on the outer periphery of the catheter body 1 near the liquid inlet hole 12. The two ends of the first airbag 2 are respectively fixedly connected to the groove walls of the first annular groove 115 on both sides along the length direction of the catheter body 1. When the inner side of the first airbag 2 is not inflated, the outer wall of the first airbag 2 is flush with the outer wall of the catheter body 1. A first air inlet hole 110 is arranged on the cavity wall of the air inlet cavity 16 away from the accommodating cavity. The first air inlet hole 110 is connected to the inner side of the first airbag 2.

[0036] A leak-proof and anti-blocking urinary catheter also includes a leak-proof component 3, a second annular groove 116 is coaxially provided on the outer wall of the urinary catheter body 1, the second annular groove 116 is located on the side of the first annular groove 115 away from the liquid inlet hole 12, and a plurality of second annular grooves 116 are provided, and the plurality of second annular grooves 116 are spaced apart along the length direction. In this embodiment, three second annular grooves 116 are provided, and the three second annular grooves 116 are evenly distributed along the length direction of the urinary catheter body 1. The leak-proof component 3 includes a second airbag 31, the number of the second airbag 31 is the same as the number of the second annular groove 116 and corresponds one to one, and the two ends of the second airbag 31 are respectively fixedly connected to the groove walls on both sides of the second annular groove 116 along the length direction of the urinary 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 urinary catheter body 1. A second air inlet hole 111 is provided at the wall of the air inlet cavity 16 away from the accommodating cavity. The number of the second air inlet holes 111 is the same as the number of the second airbags 31 and corresponds one to one. The second air inlet holes 111 are communicated with the inner side of the second airbags 31 .

[0037] Reference Figure 5, a leak-proof and anti-blocking catheter also includes a connecting sleeve 4, which is coaxially fixedly connected to the outer periphery of the catheter body 1, and the inner wall of the connecting sleeve 4 fits with the outer wall of the catheter body 1, and the connecting sleeve 4 is located on the side of the second airbag 31 away from the first airbag 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 set along the sliding direction of the funnel 32 toward the side away from the second airbag 31, and the inner wall of the funnel 32 close to the first airbag 2 fits 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 airbag 31, and 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 fits with the outer wall of the connecting sleeve 4. A connecting column 3212 is fixedly connected to the side of the connecting ring 321 away from the funnel 32. The length direction of the connecting column 3212 is perpendicular to the sliding direction of the connecting ring 321. The two ends of the connecting column 3212 along the length direction of the connecting column 3212 are located at 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. The connecting column 3212 is slidably embedded in the limiting groove 41. The sliding direction of the connecting column 3212 is parallel to the sliding direction of the connecting ring 321. The outer wall of the connecting column 3212 fits the wall of the limiting groove 41. The connecting column 3212 is coaxially 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 presses against the bottom of the limiting groove 41.

[0038] The anti-leakage assembly 3 further includes a third airbag 33, a squeeze plate 35 and a second reset member 36. A convex ring 322 is coaxially fixedly connected to the outer periphery of the funnel 32 near the connecting ring 321, and the convex ring 322 is located outside the connecting ring 321. The third airbag 33 is embedded inside the convex ring 322, and the outer wall of the third airbag 33 fits with the inner wall of the convex ring 322, the outer wall of the connecting ring 321 and the surface of the side of the funnel 32 away from the second airbag 31. The squeeze plate 35 is coaxially slidably embedded inside the convex ring 322, and a third annular groove 3221 is provided at the inner wall of the convex ring 322 away from the end of the funnel 32. The squeeze plate 35 is slidably embedded in the third annular groove 3221, and the outer wall of the squeeze plate 35 fits with the groove wall of the third annular groove 3221. A groove 351 is provided on the side of the squeeze 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 embedded grooves 3222, the embedded grooves 3222 are located outside the third annular groove 3221, the embedded grooves 3222 are connected with the third annular groove 3221, the embedded grooves 3222 extend along the axis direction of the convex ring 322, and the plurality of embedded grooves 3222 are circumferentially spaced around the axis of the convex ring 322. In this embodiment, there are four embedded grooves 3222, and the four embedded grooves 3222 are circumferentially evenly distributed around the axis of the convex ring 322. The outer periphery of the extrusion plate 35 is fixedly connected with an embedded block 352, and the number of the embedded blocks 352 and the second reset member 36 is the same as the number of the embedded grooves 3222 and corresponds one to one. The embedded block 352 is slidably embedded in the embedded groove 3222, and the sliding direction of the embedded block 352 is parallel to the sliding direction of the extrusion plate 35. The second reset member 36 is connected between the convex ring 322 and the embedded block 352, and the second reset member 36 makes the extrusion plate 35 have a tendency to approach 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 embedded groove 3222 close to the funnel 32, and the other end of the second reset member 36 is connected to the surface of the side of the embedded block 352 close to the funnel 32. A connecting tube 331 is fixedly connected to the side of the third airbag 33 away from the funnel 32, and a third air inlet hole 112 is provided at the cavity wall of the air inlet cavity 16 away from the accommodating cavity. The third air inlet hole 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 extrusion plate 35 and is fixedly connected to the outer wall of the urinary catheter body 1, and the connecting tube 331 is connected to the third air inlet hole 112.

[0039] Reference Figure 1 and Figure 3 A leak-proof and anti-blocking urinary catheter further includes a sealing component 5, which includes a sealing plate 51. The urinary catheter body 1 is provided with a slide groove 117, which is connected to the first air inlet hole 110, the second air inlet hole 111 and the third air inlet hole 112. The sealing plate 51 is slidably embedded in the slide groove 117, and the sliding direction of the sealing plate 51 is parallel to the length direction of the urinary catheter body 1, and the side wall of the sealing plate 51 is in contact with the groove wall of the slide groove 117. The sealing plate 51 is used to close the first air inlet hole 110, the second air inlet hole 111 or the third air inlet hole 112.

[0040] Reference Figure 3 and Figure 5 The closing plate 51 is provided with a second connecting hole 511 and a third connecting hole 512. The number of the second connecting holes 511 is the same as the number of the second air inlet holes 111 and corresponds one to one. The second connecting hole 511 is used to communicate with the second air inlet hole 111, and the third connecting hole 512 is used to communicate with the third air inlet hole 112. When the first airbag 2 is inflated, the closing plate 51 closes the first air inlet hole 110, the second connecting hole 511 is communicated with the second air inlet hole 111, and the third connecting hole 512 is communicated with the third air inlet hole 112. A connecting groove 118 is provided at the groove wall of the side of the slide groove 117 away from the air inlet cavity 16. A connecting block 513 is fixedly connected to the surface of the side of the closing plate 51 away from the air inlet cavity 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 closing plate 51. The closing component 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 a side surface of the connecting block 513 close to the liquid inlet 12 .

[0041] Reference Figure 5 The closure assembly 5 further includes a first reset member 53, a second connection rope 54 and a pull ring 55. One end of the second connection rope 54 is fixedly connected to the end of the closure plate 51 away from the liquid inlet hole 12. A connecting channel 119 is provided at the groove wall of the chute 117 away from the liquid inlet hole 12. The connecting channel 119 is connected to the outside. The end of the connecting channel 119 away from the chute 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 connection rope 54 passes through the connecting channel 119 and then extends out of the catheter body 1. The pull ring 55 is fixedly connected to the end of the second connection rope 54 away from the closure plate 51. The pull ring 55 is used for finger insertion. The first reset member 53 is connected between the closure plate 51 and the catheter body 1. The first reset member 53 makes the closure plate 51 have a tendency 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, and 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 an end of the closing plate 51 away from the liquid inlet hole 12, and the other end of the first reset member 53 is connected to a side groove wall of the slide groove 117 away from the liquid inlet hole 12.

[0042] The implementation principle of the leak-proof and blockage-proof urinary catheter in the embodiment of the present application is: when in use, the end of the urinary catheter body 1 close to the liquid inlet hole 12 is inserted into the bladder through the urethra, and inflated through the inflation interface 19. The gas enters the inner side of the first air bag 2 through the air inlet channel 18, the air inlet cavity 16 and the first air inlet hole 110. The first air bag 2 expands, and the closing plate 51 is pulled to slide by the connecting rope. When the closing plate 51 closes the first air inlet hole 110, the second connecting hole 511 is connected to the second air inlet hole 111, and the third connecting hole 512 is connected to the third air inlet hole 112.

[0043] The ventilation continues, and the second airbag 31 and the third airbag 33 expand, the outer wall of the second airbag 31 fits against the inner wall of the urethra, and the third airbag 33 pushes the squeezing plate 35 to overcome the elastic force of the second resetting member 36 to slide.

[0044] Loosen the fixing bolt 34, slide the funnel 32 closer to the patient so that the funnel 32 fits 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 to achieve relative fixation of the funnel 32 and the connecting sleeve 4.

[0045] When the urethra expands, the pressure on the second airbag 31 decreases, and the extrusion 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 hole 112, the air inlet cavity 16 and the second air inlet hole 111, so that the outer wall of the second airbag 31 remains in contact with the inner wall of the urethra.

[0046] When the urinary catheter needs to be removed, air is pumped out through the inflation interface 19, and the second airbag 31 and the third airbag 33 are contracted. When the second airbag 31 and the third airbag 33 are completely contracted, the second connecting rope 54 is pulled through the pull ring 55 to drive the closing plate 51 to slide, so that the inner side of the first airbag 2 is connected to the air inlet cavity 16 through the first air inlet hole 110, and the inflation interface 19 is continuously pumped out so that the first airbag 2 is embedded in the first annular groove 115, and then the urinary catheter body 1 is pulled out.

[0047] Reference Figure 6 The present application also discloses an application method of a leak-proof and anti-blocking urinary catheter, which includes the following steps: S1: Insertion of the catheter, inserting one end of the catheter body 1 close to the liquid inlet 12 into the bladder through the urethra, and connecting the drainage tube to the other end of the catheter body 1; S2: Inflate and fix. Inflate the inflation tube 17 through the inflation interface 19. The gas enters the first airbag 2 through the first air inlet hole 110. The first airbag 2 expands. The closing plate 51 is pulled to slide through the first connecting rope 52. The closing plate 51 seals the first air inlet hole 110. The second air inlet hole 111 is connected to the second connecting hole 511. The third air inlet hole 112 is connected to the third connecting hole 512. The urinary catheter body 1 is pulled so that the first airbag 2 abuts against the inner wall of the bladder. S3: Adjust the funnel 32, loosen the fixing bolt 34, slide the funnel 32 so that the inner wall of the funnel 32 fits the patient's skin surface, and tighten the fixing bolt 34 so that the fixing bolt 34 is pressed against the outer wall of the connecting sleeve 4; S4: Inflation and sealing. Continue to inflate the inflation tube 17. The gas enters the second air bag 31 and the third air bag 33 through the second air inlet hole 111 and the third air inlet hole 112. The second air bag 31 fits against the inner wall of the urethra to achieve sealing between the catheter body 1 and the urethra.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A leak-proof and blockage-proof urinary catheter, characterized in that: The invention comprises a catheter body (1), a first air bag (2) and a second air bag (31); a liquid outlet cavity (11) is provided at one end of the catheter body (1); a liquid inlet hole (12) is provided at a cavity wall of the liquid outlet cavity (11) at an end away from the cavity opening of the liquid outlet cavity (11); the liquid inlet hole (12) is connected to the outside; a flushing and injection tube (13) is connected to the outer wall of the catheter body (1) at a side away from the liquid inlet hole (12); the flushing and injection tube (13) is provided with a liquid inlet channel (14); the liquid inlet channel (14) is connected to the liquid outlet cavity (11); a sealing plug (15) is connected to the end of the flushing and injection tube (13) away from the catheter body (1); the catheter body (1) is provided with an air inlet cavity (16); the outer wall of the catheter body (1) at a side close to the flushing and injection tube (13) is connected to the sealing plug (15); The urinary catheter body (1) is provided with an air inlet passage (18); the air inlet passage (18) is in communication with the air inlet cavity (16); the end of the air inlet tube (17) away from the urinary catheter body (1) is connected with an air inlet port (19); the first air bag (2) is connected to the outer periphery of the urinary catheter body (1); a first air inlet hole (110) is provided on the wall of the air inlet cavity (16); the first air inlet hole (110) is in communication with the inner side of the first air bag (2); the second air bag (31) is connected to the outer periphery of the urinary catheter body (1); the second air bag (31) is located on a side of the first air bag (2) away from the liquid inlet hole (12); a second air inlet hole (111) is provided on the wall of the air inlet cavity (16); the second air inlet hole (111) is in communication with the inner side of the second air bag (31).

2. The leak-proof and blockage-proof urinary catheter according to claim 1, characterized in that: A plurality of the second airbags (31) are provided; the plurality of the second airbags (31) are spaced apart along the length direction of the catheter body (1); the number of the second air inlet holes (111) is the same as the number of the 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 invention also comprises a funnel (32) and a third air bag (33); 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); the third air bag (33) is connected to a side of the funnel (32) away from the first air bag (2); the third air bag (33) is connected to a connecting tube (331); a third air inlet hole (112) is provided on the wall of the air inlet cavity (16); and one end of the connecting tube (331) away from the third air bag (33) is connected to the third air inlet hole (112).

4. The leak-proof and blockage-proof urinary catheter according to claim 3, characterized in that: It also comprises a connecting sleeve (4) and a fixing bolt (34); the connecting sleeve (4) is coaxially connected to the outer periphery of the urinary catheter body (1); a connecting ring (321) is coaxially connected to the side of the funnel (32) away from the first airbag (2); 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 then 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: The device also comprises an extrusion plate (35) and a second reset member (36); a convex ring (322) is coaxially connected to a side of the funnel (32) close to 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 a surface of a side of the funnel (32) close to the convex ring (322); the extrusion plate (35) is coaxially slidably embedded inside the convex ring (322); the extrusion plate (35) abuts against a surface of a side of the third airbag (33) away from the first airbag (2); the second reset member (36) is connected between the extrusion plate (35) and the convex ring (322); the second reset member (36) enables the extrusion plate (35) to have a tendency to approach the funnel (32).

6. The leak-proof and blockage-proof urinary catheter according to claim 4, characterized in that: The invention also comprises a closing plate (51), a first connecting rope (52) and a first restoring member (53); the closing plate (51) is slidably connected to the urinary catheter body (1); the sliding direction of the closing plate (51) is parallel to the length direction of the urinary catheter; the closing plate (51) is used to close the first air inlet hole (110), the second air inlet hole (111) or the third air inlet hole (112); one end of the first connecting rope (52) is connected to the inner wall of the first air bag (2); the other end of the first connecting rope (52) is connected to the closing plate (51); the closing plate (51) is provided with a first The urinary catheter body (1) has a second connecting hole (511) and a third connecting hole (512); when the first air bag (2) is inflated, the closing plate (51) closes the first air inlet hole (110); the second connecting hole (511) is connected to the second air inlet hole (111); the third connecting hole (512) is connected to the third air inlet hole (112); the first restoring member (53) is connected between the closing plate (51) and the urinary catheter body (1); the first restoring member (53) enables the closing plate (51) to have a tendency to close the second air inlet hole (111) and the third air inlet hole (112).

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

8. The leak-proof and blockage-proof urinary catheter according to claim 1, characterized in that: It also comprises a support frame (6); a mounting groove (113) is provided on the wall of the liquid outlet cavity (11); and the support frame (6) is embedded in the mounting groove (113).

9. An application method of a leak-proof and blockage-proof urinary catheter, using the leak-proof and blockage-proof urinary catheter according to any one of claims 1 to 8, characterized in that: The following steps are included: S1: inserting the catheter, inserting one end of the catheter body (1) close to the liquid inlet hole (12) through the urethra into the bladder, and connecting the drainage tube to the other end of the catheter body (1); S2: Inflate and fix, inflate the inflation tube (17) through the inflation interface (19), the gas enters the first air bag (2) through the first air inlet hole (110), the first air bag (2) expands, and the closing plate (51) is pulled to slide through the first connecting rope (52), the closing plate (51) seals the first air inlet hole (110), the second air inlet hole (111) is connected to the second connecting hole (511), the third air inlet hole (112) is connected to the third connecting hole (512), and the urinary catheter body (1) is pulled so that the first air bag (2) abuts against the inner wall of the bladder; S3: adjusting the funnel (32), loosening the fixing bolt (34), sliding the funnel (32) so that the inner wall of the funnel (32) fits the surface of the patient's skin, and tightening the fixing bolt (34) so ​​that the fixing bolt (34) is pressed against the outer wall of the connecting sleeve (4); S4: Inflate and seal. Continue to inflate the inflation tube (17). The gas enters the second air bag (31) and the third air bag (33) through the second air inlet hole (111) and the third air inlet hole (112). The second air bag (31) fits against the inner wall of the urethra, thereby achieving a seal between the urinary catheter body (1) and the urethra.

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