Anti-reflux urine collector for urinary incontinence patient

Abstract

The invention discloses an anti-reflux urine collector for urinary incontinence patients, and belongs to the field of medical instruments, the anti-reflux urine collector comprises a urinary catheterization tank, a fixing sleeve is fixedly connected to the upper surface of the urinary catheterization tank, a piston is slidably connected to the interior of the fixing sleeve, and a hard catheter is fixedly connected to the interior of the piston; anti-backflow assemblies for preventing backflow of urine are arranged on the two sides of the interior of the urine guide tank. When the catheterization tank inclines by a certain angle, urine can enter the L-shaped plate, the urine is collected on one side of the catheterization tank, the urine cannot make contact with the connecting pipe to flow out, backflow of the urine is avoided, and even if the catheterization tank is higher than the bladder and turns over, the urine can rapidly fall in the catheterization tank, so that the urine is prevented from flowing out. When the urine collector is used, urine can quickly fall into the two L-shaped plates to be collected, most urine is effectively prevented from flowing back, a small part of urine flows into the connecting pipe, the influence is small, the pain of a patient is reduced, and the experience comfort of the urine collector is improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to an anti-backflow urine collection device for patients with urinary incontinence. Background Technology

[0002] In clinical practice, especially in the surgical field, it is common to encounter situations where a urinary catheter needs to be inserted after surgery to drain the patient's urine. Because patients can only lie in bed during anesthesia and after surgery and cannot get out of bed, it is necessary to leave the catheter in place to drain the urine. This is a temporary measure.

[0003] Most common catheterization devices currently use a catheter that extends directly through the urethra into the bladder, using gravity to drain urine directly into a collection bag. However, in actual use, it is necessary to maintain a certain height difference between the patient's bladder and the collection bag. If the collection bag is higher than the bladder, urine reflux will occur.

[0004] To address the aforementioned issues, Chinese Patent No. CN112294526B discloses an anti-backflow urine collection device for patients with urinary incontinence. This device uses the elasticity of a spring to drive a piston, achieving self-aspiration and significantly improving overall urination efficiency. However, in actual operation, the catheter is under negative pressure, which causes the tube inserted into the urethra to also be under negative pressure. This creates suction within the urethra, causing tissue tearing and resulting in urethral distension and pain, thus causing discomfort for the patient. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an anti-backflow urine collection device for patients with urinary incontinence.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A backflow prevention urine collection device for patients with urinary incontinence includes a urine collection canister, a fixing sleeve fixedly connected to the upper surface of the urine collection canister, a piston slidably connected inside the fixing sleeve, a rigid tubing fixedly connected inside the piston, and anti-backflow components to prevent urine backflow provided on both sides inside the urine collection canister.

[0008] The anti-backflow assembly includes a mounting plate fixed at the middle of the front and rear sides of the inner surface of the catheter canister. L-shaped plates are fixedly connected to both sides of the mounting plate. A connecting pipe is fixedly connected inside the mounting plate. A tapered pipe is fixedly connected to the top of the connecting pipe. A fixing plate is fixedly connected to the top of the inner surface of the tapered pipe. A first sealing plug is fixedly connected to the top of the fixing plate. A blocking assembly is provided at the middle of the inner surface of the tapered pipe.

[0009] Furthermore, the top of the tapered tube is fixedly connected to the bottom of the fixed sleeve, the first sealing plug is located directly below the rigid conduit, the connecting tube penetrates the interior of the mounting plate, and a baffle is fixedly connected axially symmetrically to the upper surface of the fixed sleeve.

[0010] Furthermore, the blocking assembly includes a fixed frustum fixed to the inner surface of the tapered tube near the fixed plate and a cross plate fixed to the inner surface of the tapered tube near the bottom. The fixed frustum has a through hole inside, and an arc-shaped magnetic strip is fixedly connected inside the through hole. A metal ball is attracted to the bottom of the arc-shaped magnetic strip, and a rubber ball is provided on the outer surface of the metal ball.

[0011] Furthermore, the rubber ball is located between the cross plate and the fixed truncated cone, the upper surface of the fixed truncated cone is recessed, and the rubber ball is in contact with the inner edge of the through hole.

[0012] Furthermore, the L-shaped plate is internally equipped with a purification component for venting gas. The purification component includes a fixed circular tube fixed inside the L-shaped plate. The bottom of the fixed circular tube is provided with a waterproof and breathable membrane. A threaded tube is threadedly connected to the inner surface of the fixed circular tube. Activated carbon is fixedly connected to the top of the threaded tube.

[0013] Furthermore, the inner surface of the fixed circular tube is provided with threads near the top, and the threaded tube is fixedly connected to the fixed circular tube by the threads. A sealing ring is provided at the top of the fixed circular tube, and the activated carbon and the sealing ring are pressed against each other.

[0014] Furthermore, the waterproof and breathable membrane includes an EPTFE membrane, and the bottom of the fixed circular tube extends out of the interior of the catheter canister.

[0015] Furthermore, the lower surface of the catheter is provided with an anti-misoperation component, which includes a fixing tube fixed to the lower surface of the catheter. One end of the fixing tube is fixedly connected to a valve, and a rotating rod is provided on the outside of the valve. The other end of the valve is provided with a drain pipe. Two slots are symmetrically opened on the outer surface of the drain pipe. Magnetic sliders are slidably arranged inside the two slots. A sliding ring is fixedly connected to one side of the two magnetic sliders. A connecting rod is fixedly connected to the outer surface of the sliding ring. A C-shaped plate is fixedly connected to one side of the connecting rod.

[0016] Furthermore, the handle on the rotating rod and the C-shaped plate are located on the same plane, the C-shaped plate is locked on the outside of the rotating rod, and the sliding ring is sleeved on the outer surface of the sewage pipe.

[0017] Furthermore, a sealing assembly is provided on one side of the sliding ring. The sealing assembly includes two hinged plates fixed to one side of the sliding ring, a transmission plate hinged between the two hinged plates, a fixed seat fixedly connected to one side of the transmission plate, and a second sealing plug fixedly connected to one side of the fixed seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This solution incorporates an anti-backflow component. When the catheter is tilted at a certain angle, urine enters the interior of the L-shaped plates, causing it to collect on one side of the catheter and preventing it from contacting the connecting tube and flowing out, thus avoiding backflow. Even if the catheter is higher than the bladder and tilts, the urine inside the catheter will quickly fall and collect inside the two L-shaped plates, effectively preventing most of the urine from flowing back. The very small amount of urine that does flow in has minimal impact, reducing patient pain and improving the comfort of the catheterization experience.

[0020] 2. This solution incorporates a blocking component. Even if the catheter is flipped 180 degrees, the metal ball will quickly move towards the fixed truncated cone under gravity, and the rubber ball will block the through hole. When a small amount of urine enters the conical tube from the connecting tube, it cannot flow back to the catheter tube through the conical tube, thus preventing urine from flowing back under any circumstances.

[0021] 3. This solution incorporates a purification component. As the urine inside the catheter increases, the gas inside the catheter is expelled. The gas passes through a waterproof and breathable membrane into the interior of a fixed circular tube, and then through the fixed circular tube into the interior of activated carbon. The activated carbon purifies and removes the urine odor, preventing the odor from spreading to the surrounding environment and causing discomfort to patients and medical staff. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the blocking component structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the fixed frustum structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the purification component structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the anti-misoperation component structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the sealing assembly structure of the present invention.

[0029] Explanation of the labels in the diagram:

[0030] 1. Urinary catheter; 2. Fixation sleeve;

[0031] 3. Anti-backflow assembly; 31. Mounting plate; 32. Connecting pipe; 33. Tapered pipe; 34. L-shaped plate; 35. Fixing plate; 36. First sealing plug;

[0032] 37. Blocking assembly; 371. Fixed frustum; 372. Through hole; 373. Metal ball; 374. Rubber ball; 375. Arc-shaped magnetic strip; 376. Cross plate;

[0033] 38. Purification components; 381. Fixed round tube; 382. Waterproof and breathable membrane; 383. Threaded tube; 384. Activated carbon;

[0034] 4. Anti-misoperation components; 41. Fixed pipe; 42. Valve; 43. Drain pipe; 44. Rotating rod; 45. Sliding ring; 46. Groove; 47. Connecting rod; 48. C-shaped plate;

[0035] 49. Sealing assembly; 491. Hinge plate; 492. Transmission plate; 493. Fixing base; 494. Second sealing plug; 410. Magnetic slider;

[0036] 5. Piston; 6. Rigid conduit. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 7 A backflow prevention urine collection device for patients with urinary incontinence includes a urine collection canister 1, a fixing sleeve 2 fixedly connected to the upper surface of the urine collection canister 1, a piston 5 slidably connected inside the fixing sleeve 2, a rigid conduit 6 fixedly connected inside the piston 5, and anti-backflow components 3 for preventing urine backflow are provided on both sides inside the urine collection canister 1.

[0039] like Figure 2-3As shown, the anti-backflow component 3 includes a mounting plate 31 fixed at the middle of the front and rear sides of the inner surface of the catheter 1. L-shaped plates 34 are fixedly connected to both sides of the mounting plate 31. A connecting pipe 32 is fixedly connected inside the mounting plate 31. A tapered pipe 33 is fixedly connected to the top of the connecting pipe 32. A fixing plate 35 is fixedly connected to the top of the inner surface of the tapered pipe 33. A first sealing plug 36 is fixedly connected to the top of the fixing plate 35. A blocking component 37 is provided at the middle of the inner surface of the tapered pipe 33.

[0040] The top of the tapered tube 33 is fixedly connected to the bottom of the fixed sleeve 2. The first sealing plug 36 is located directly below the rigid conduit 6. The connecting tube 32 passes through the interior of the mounting plate 31. A baffle is fixedly connected to the upper surface of the fixed sleeve 2 symmetrically.

[0041] During catheterization, the catheter tubing is connected to the rigid catheter 6, and the other end of the catheter tubing is inserted into the patient's urethra. When the patient needs to urinate, urine flows through the catheter tubing and rigid catheter 6 into the conical tube 33 and is transferred to the catheter canister 1 via the connecting tube 32. The urine is collected inside the catheter canister 1. When the catheter canister 1 is tilted at a certain angle, the urine enters the L-shaped plate 34, causing the urine to collect on one side of the catheter canister 1, preventing the urine from contacting the connecting tube 32 and flowing out. To prevent urine backflow, even if the height of the catheter 1 is higher than the height of the bladder and it is turned upside down, the urine will fall quickly inside the catheter 1 and collect inside the two L-shaped plates 34, so that the urine will not come into direct contact with the connecting tube 32 and prevent urine from flowing out through the connecting tube 32. Because the diameter of the connecting tube 32 is small, a very small amount of urine enters the interior of the connecting tube 32, effectively preventing the backflow of most urine, reducing patient pain, and improving the comfort of the urine collection device experience.

[0042] like Figure 3-4 As shown, the blocking component 37 includes a fixed frustum 371 fixed on the inner surface of the tapered tube 33 near the fixed plate 35 and a cross plate 376 fixed on the inner surface of the tapered tube 33 near the bottom. The fixed frustum 371 has a through hole 372 inside, and an arc-shaped magnetic strip 375 is fixedly connected inside the through hole 372. A metal ball 373 is attracted to the bottom of the arc-shaped magnetic strip 375, and a rubber ball 374 is provided on the outer surface of the metal ball 373.

[0043] The rubber ball 374 is located between the cross plate 376 and the fixed frustum 371. The upper surface of the fixed frustum 371 is recessed, and the rubber ball 374 fits against the inner edge of the through hole 372.

[0044] Although urine will not flow out of the connecting tube 32 when the catheter 1 is tilted at any angle, a very small amount of urine will flow back from the connecting tube 32 when the catheter 1 is flipped 180 degrees. To prevent this phenomenon, a flexible metal ball 373 is designed. When the catheter 1 is flipped 180 degrees, the metal ball 373 will quickly move closer to the fixed truncated cone 371 under the action of gravity, so that the rubber ball 374 blocks the through hole 372. When it approaches the through hole 372, the arc-shaped magnetic strip 375 will attract the metal ball 373, ensuring that the metal ball 373 can always seal the through hole 372. When a small amount of urine enters the conical tube 33 from the inside of the connecting tube 32, it cannot flow back to the inside of the catheter tubing through the conical tube 33. Therefore, urine cannot flow back under any circumstances.

[0045] like Figure 5 As shown, the L-shaped plate 34 is equipped with a purification component 38 for venting gas. The purification component 38 includes a fixed round tube 381 fixed inside the L-shaped plate 34. A waterproof and breathable membrane 382 is provided at the bottom of the fixed round tube 381. A threaded tube 383 is threadedly connected to the inner surface of the fixed round tube 381. Activated carbon 384 is fixedly connected to the top of the threaded tube 383.

[0046] The inner surface of the fixed round tube 381 is provided with threads near the top. The threaded tube 383 is fixedly connected to the fixed round tube 381 through threads. The top of the fixed round tube 381 is provided with a sealing ring. The activated carbon 384 and the sealing ring are pressed against each other.

[0047] The waterproof and breathable membrane 382 includes an EPTFE membrane, and the bottom of the fixed round tube 381 extends out of the interior of the catheter canister 1.

[0048] When urine enters the catheter canister 1, the gas inside cannot be expelled in time and may enter the patient's body through the catheter tubing. Therefore, as the amount of urine inside the catheter canister 1 increases, the gas inside the catheter canister 1 will be expelled. The gas enters the fixed round tube 381 through the waterproof and breathable membrane 382, ​​and then enters the activated carbon 384 through the fixed round tube 381. The activated carbon 384 can purify and expel the urine odor, preventing the odor from spreading to the surrounding environment and causing discomfort to the patient and medical staff. The waterproof and breathable membrane 382 can prevent urine from entering the fixed round tube 381 because the micropores of the waterproof and breathable membrane 382 are smaller than the diameter of water molecules but larger than the diameter of air molecules, so it can be breathable but not water-permeable.

[0049] like Figure 6-7As shown, the lower surface of the catheterization container 1 is provided with an anti-misoperation component 4. The anti-misoperation component 4 includes a fixing tube 41 fixed to the lower surface of the catheterization container 1. One end of the fixing tube 41 is fixedly connected to a valve 42. A rotating rod 44 is provided on the outside of the valve 42. The other end of the valve 42 is provided with a drain pipe 43. Two slots 46 are symmetrically opened on the outer surface of the drain pipe 43. Magnetic sliders 410 are slidably arranged inside the two slots 46. A sliding ring 45 is fixedly connected to one side of the two magnetic sliders 410. A connecting rod 47 is fixedly connected to the outer surface of the sliding ring 45. A C-shaped plate 48 is fixedly connected to one side of the connecting rod 47.

[0050] The handle on the rotating rod 44 and the C-shaped plate 48 are on the same plane. The C-shaped plate 48 is stuck on the outside of the rotating rod 44, and the sliding ring 45 is sleeved on the outer surface of the sewage pipe 43.

[0051] like Figure 7 As shown, a sealing assembly 49 is provided on one side of the sliding ring 45. The sealing assembly 49 includes two hinge plates 491 fixed on one side of the sliding ring 45. A transmission plate 492 is hinged between the two hinge plates 491. A fixed seat 493 is fixedly connected to one side of the transmission plate 492. A second sealing plug 494 is fixedly connected to one side of the fixed seat 493.

[0052] When the urine inside the catheter 1 gradually becomes excessive, and the urine level approaches the inlet of the connecting tube 32, it is necessary to treat the urine inside the catheter 1. The catheter tubing is pulled out from inside the rigid tube 6, and the piston 5 is pushed downwards, causing the rigid tube 6 to fit over the outside of the first sealing plug 36, thus sealing the rigid tube 6 and preventing the odor of urine inside the catheter 1 from spreading through the rigid tube 6. The valve 42 is opened by rotating the lever 44, and the urine is discharged through the fixed tube 41 and the drain tube 43. After discharge, the rotating rod 44 is reset to close the valve 42. At this time, the sliding ring 45 is pushed to move the C-shaped plate 48 closer to the rotating rod 44. The C-shaped plate 48 gradually fits onto the outside of the rotating rod 44. When the sliding ring 45 moves the magnetic slider 410 to the end of the slot 46, the magnetic slider 410 and the slot 46 attract each other and fix the sliding ring 45. This can prevent the rotating rod 44 from rotating by accident and avoid the rotating rod 44 from rotating due to external force, which could cause the valve 42 to open unexpectedly and cause urine leakage.

[0053] When the C-shaped plate 48 is completely fitted onto the outside of the rotating rod 44, the transmission plate 492 and the fixed seat 493 are simultaneously moved into the drain pipe 43. When the sliding ring 45 moves to one end, the second sealing plug 494 seals the drain pipe 43, thereby preventing the valve core inside the valve 42 from wearing out and leaking urine, further improving the sealing performance of the urinary catheter 1 during use, and providing double protection for the urine inside the urinary catheter 1.

[0054] Instructions for use: When collecting urine, when the catheter 1 is tilted at a certain angle, the urine will enter the interior of the L-shaped plate 34, causing the urine to collect on one side of the catheter 1. The urine cannot come into contact with the connecting tube 32 and flow out, thus preventing backflow of urine. Even if the height of the catheter 1 is higher than the height of the bladder and it is flipped, the urine will fall quickly inside the catheter 1 and quickly fall into the interior of the two L-shaped plates 34, so that the urine will not come into direct contact with the connecting tube 32 and prevent urine from flowing out through the connecting tube 32.

[0055] When the catheter canister 1 rotates 180 degrees, the metal ball 373 quickly approaches the fixed truncated cone 371 under the action of gravity, causing the rubber ball 374 to block the through hole 372. When it approaches the through hole 372, the arc-shaped magnetic strip 375 attracts the metal ball 373, ensuring that the metal ball 373 can always seal the through hole 372. When a small amount of urine enters the interior of the conical tube 33 from the interior of the connecting tube 32, it cannot flow back to the interior of the catheter tubing through the conical tube 33. Therefore, urine cannot flow backward under any circumstances.

[0056] As the amount of urine inside the catheter 1 increases, the gas inside the catheter 1 will be expelled outward. The gas enters the interior of the fixed round tube 381 through the waterproof and breathable membrane 382, ​​and then enters the interior of the activated carbon 384 through the fixed round tube 381. The activated carbon 384 can purify and expel the urine odor, preventing the odor from spreading to the surrounding environment and causing discomfort to patients and medical staff.

[0057] Pushing the sliding ring 45 causes the C-shaped plate 48 to move closer to the rotating rod 44. The C-shaped plate 48 gradually fits onto the outside of the rotating rod 44. When the sliding ring 45 drives the magnetic slider 410 to move to the end of the slot 46, the magnetic slider 410 and the slot 46 attract each other and fix the sliding ring 45, thereby preventing the rotating rod 44 from rotating by accident.

[0058] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A backflow prevention urine collection device for patients with urinary incontinence, comprising a urine collection canister (1), wherein a fixing sleeve (2) is fixedly connected to the upper surface of the urine collection canister (1), a piston (5) is slidably connected inside the fixing sleeve (2), and a rigid conduit (6) is fixedly connected inside the piston (5); Its features are: The catheter canister (1) is equipped with anti-backflow components (3) on both sides inside to prevent urine backflow; The anti-backflow component (3) includes a mounting plate (31) fixed at the middle of the front and rear sides of the inner surface of the catheter (1). L-shaped plates (34) are fixedly connected to both sides of the mounting plate (31). A connecting pipe (32) is fixedly connected inside the mounting plate (31). A tapered pipe (33) is fixedly connected to the top of the connecting pipe (32). A fixing plate (35) is fixedly connected to the top of the inner surface of the tapered pipe (33). A first sealing plug (36) is fixedly connected to the top of the fixing plate (35). A blocking component (37) is provided at the middle of the inner surface of the tapered pipe (33).

2. The anti-backflow urine collection device for patients with urinary incontinence according to claim 1, characterized in that: The top of the tapered tube (33) is fixedly connected to the bottom of the fixed sleeve (2), the first sealing plug (36) is located directly below the rigid conduit (6), the connecting tube (32) penetrates the interior of the mounting plate (31), and a baffle is fixedly connected axially symmetrically to the upper surface of the fixed sleeve (2).

3. A backflow prevention urine collection device for patients with urinary incontinence according to claim 2, characterized in that: The blocking assembly (37) includes a fixed frustum (371) fixed on the inner surface of the tapered tube (33) near the fixed plate (35) and a cross plate (376) fixed on the inner surface of the tapered tube (33) near the bottom. The fixed frustum (371) has a through hole (372) inside. An arc-shaped magnetic strip (375) is fixedly connected inside the through hole (372). A metal ball (373) is attracted to the bottom of the arc-shaped magnetic strip (375). A rubber ball (374) is provided on the outer surface of the metal ball (373).

4. A backflow prevention urine collection device for patients with urinary incontinence according to claim 3, characterized in that: The rubber ball (374) is located between the cross plate (376) and the fixed truncated cone (371). The upper surface of the fixed truncated cone (371) is recessed, and the rubber ball (374) is in contact with the inner edge of the through hole (372).

5. A backflow prevention urine collection device for patients with urinary incontinence according to claim 4, characterized in that: The L-shaped plate (34) is provided with a purification component (38) for venting gas. The purification component (38) includes a fixed round tube (381) fixed inside the L-shaped plate (34). A waterproof and breathable membrane (382) is provided at the bottom of the fixed round tube (381). A threaded tube (383) is threadedly connected to the inner surface of the fixed round tube (381). Activated carbon (384) is fixedly connected to the top of the threaded tube (383).

6. A backflow prevention urine collection device for patients with urinary incontinence according to claim 5, characterized in that: The inner surface of the fixed round tube (381) is provided with threads near the top. The threaded tube (383) is fixedly connected to the fixed round tube (381) by threads. The top of the fixed round tube (381) is provided with a sealing ring. The activated carbon (384) and the sealing ring are pressed against each other.

7. A backflow prevention urine collection device for patients with urinary incontinence according to claim 6, characterized in that: The waterproof and breathable membrane (382) includes an EPTFE membrane, and the bottom of the fixed tube (381) extends out of the interior of the catheter canister (1).

8. A backflow prevention urine collection device for patients with urinary incontinence according to claim 1, characterized in that: The lower surface of the catheter (1) is provided with an anti-misoperation component (4). The anti-misoperation component (4) includes a fixing tube (41) fixed to the lower surface of the catheter (1). One end of the fixing tube (41) is fixedly connected to a valve (42). A rotating rod (44) is provided on the outside of the valve (42). A drain pipe (43) is provided on the other end of the valve (42). Two slots (46) are symmetrically opened on the outer surface of the drain pipe (43). Magnetic sliders (410) are slidably arranged inside the two slots (46). A sliding ring (45) is fixedly connected to one side of the two magnetic sliders (410). A connecting rod (47) is fixedly connected to the outer surface of the sliding ring (45). A C-shaped plate (48) is fixedly connected to one side of the connecting rod (47).

9. A backflow prevention urine collection device for patients with urinary incontinence according to claim 8, characterized in that: The handle on the rotating rod (44) and the C-shaped plate (48) are on the same plane. The C-shaped plate (48) is locked on the outside of the rotating rod (44). The sliding ring (45) is sleeved on the outer surface of the drain pipe (43).

10. A backflow prevention urine collection device for patients with urinary incontinence according to claim 9, characterized in that: A sealing assembly (49) is provided on one side of the sliding ring (45). The sealing assembly (49) includes two hinge plates (491) fixed on one side of the sliding ring (45). A transmission plate (492) is hinged between the two hinge plates (491). A fixed seat (493) is fixedly connected to one side of the transmission plate (492). A second sealing plug (494) is fixedly connected to one side of the fixed seat (493).

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