Urethral catheterization equipment for urinary surgery

Abstract

The invention provides urinary catheterization equipment for urinary surgery and relates to the technical field of medical treatment. The urinary catheterization equipment comprises a urinary catheter, a drainage tube and a urine collection bag. The outer end of the catheter is sleeved with a butt joint anti-bending mechanism; the butt-joint anti-bending mechanism comprises a butt-joint sleeve and a circular truncated cone tube, and the catheter penetrates through the circular truncated cone tube and the butt-joint sleeve; a supporting plate is arranged in the circular truncated cone pipe; the supporting plate comprises a transverse straight section and a vertical straight section in transition connection through an arc-shaped angle, and the vertical section of the transverse straight section is of a semicircular structure. A squeezing mechanism for squeezing the urine opening is arranged on the butt joint sleeve; the end, away from the urine inlet, of the catheter is connected with the drainage tube through an adjustable anti-backflow plug. The drainage tube is in threaded connection with the urine inlet tube mechanism arranged on the urine collection bag through the opening and closing head arranged on the drainage tube, so that the catheter can extend into the urethra conveniently, bending of the catheter is reduced, backflow of urine is prevented conveniently when a patient is examined and turned over, and when the urine collection bag is taken down, the drainage tube is closed conveniently, and the urine is not discharged continuously.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and more particularly to a catheterization device for use in urology. Background Technology

[0002] Urinary catheterization equipment requires a catheterization system, which includes a catheter, a drainage tube, and a urine collection bag. The catheter is a tube made of natural rubber, silicone rubber, or polyvinyl chloride. It can be inserted into the bladder through the urethra to drain urine. Many patients need to use catheters to drain urine for various reasons such as surgery, critical illness, shock, urinary incontinence, or perineal wounds.

[0003] When a male patient uses a urinary catheter, the doctor inserts the catheter into the urethra and bladder using forceps. When the catheter is inserted, it is difficult to ensure that it is in a straight line with the urethral opening, and the bent catheter can easily cause pain at the urethral opening.

[0004] Secondly, urine reflux in the catheter can easily cause urinary tract infections. Current procedures usually involve placing the catheter from the urethral opening towards the urine collection bag from top to bottom. However, when performing procedures such as examinations or turning over patients, the outlet of the catheter may inevitably be raised, causing urine reflux.

[0005] Finally, changing the urine collection bag requires removing it from the drainage tube. When removing it, urine will inevitably continue to flow out. The current method usually requires two people to operate: one person removes the urine collection bag and the other person blocks the drainage tube, which is very troublesome.

[0006] To address the above issues, we propose a catheterization device for urology. Summary of the Invention

[0007] The present invention provides a catheterization device for urology, which facilitates the insertion of the catheter into the urethra, reduces the bending of the catheter, facilitates the prevention of urine backflow when examining or turning the patient, and facilitates the closure of the drainage tube when the urine collection bag is removed, so that urine no longer flows out.

[0008] The present invention provides a catheterization device for urology, comprising a catheter, a drainage tube, and a urine collection bag; a docking anti-bending mechanism is sleeved on the outer end of one side of the catheter; the docking anti-bending mechanism includes a docking sleeve and a frustum tube, and the catheter passes through the frustum tube and the docking sleeve in sequence; A support plate is fixedly connected inside the frustum tube; the support plate includes a horizontal straight section and a vertical straight section, the horizontal straight section and the vertical straight section are integrally formed and connected by an arc angle; the vertical cross-section of the horizontal straight section is a semi-circular structure; the catheter is in contact with the straight section; The docking sleeve is threaded to the frustum tube, and the docking sleeve is provided with a squeezing mechanism for squeezing open the urethral opening of the human penis. The end of the catheter away from the frustum tube is connected to the drainage tube via an adjustable anti-backflow plug; The drainage tube is threadedly connected to the urine inlet tube mechanism on the urine collection bag via an opening and closing head on the drainage tube, and the opening and closing head and the urine inlet tube mechanism are self-pressing at their internal connection points.

[0009] Furthermore, the extrusion mechanism includes two protrusions integrally formed with the mating sleeve. The protrusions are provided with placement grooves extending into the mating sleeve. A pressure plate is provided in the placement groove. A connecting plate extending out of the protrusions is fixedly connected to the pressure plate. A pressing plate is fixedly connected to the end of the connecting plate away from the pressure plate. A spring fixedly connected to the protrusions is fixedly connected to the pressing plate.

[0010] Furthermore, the end face of the pressure plate away from the connecting plate is an arc-shaped structure and is part of the inner diameter circle of the docking sleeve. The inner wall of the docking sleeve, as well as the pressure plate, the frustum tube, and the support plate, are all covered with medical pads.

[0011] Furthermore, the frustum tube is provided with a grid, and a connecting sleeve is fixedly connected to the end of the frustum tube near the docking sleeve, and the connecting sleeve is threadedly connected to the docking sleeve.

[0012] Furthermore, the anti-backflow plug includes an inlet head, an inner tube, a plugging cap mechanism, and an outlet head, with the inlet head and outlet head connected by four fixed strips; The inlet head and outlet head are respectively connected to a catheter, the urinary catheter is sleeved on the catheter of the inlet head, and the drainage tube is sleeved on the catheter of the outlet head. The two ends of the inner tube are respectively connected to the inlet head and the outlet head, and the inner tube is provided with an annular groove, and the annular groove is provided with a sealing ring that fits against the inner wall of the inlet head and the outlet head; The fixed strip is provided with a moving groove, and the inner tube is provided with a push plate that moves within the moving groove; The plugging mechanism is located between the liquid outlet and the inner tube.

[0013] Furthermore, the plugging mechanism includes a plugging head and a frustum cap fixed to the end of the plugging head. The plugging head is fixedly connected to the inside of the liquid outlet head by a fixing plate. Annular sealing rings are fixedly connected to the outer surface of the plugging head and the inner wall of the inner tube.

[0014] Furthermore, the opening and closing head includes a pipe, a push plate, a sealing head, and a transverse spring; both ends of the pipe are connected to connecting pipes, and one end of the drainage pipe is sleeved on the outer wall of the connecting pipe; The push plate is located at the end of the pipe away from the drain pipe, and the push plate is provided with slots for liquid passage; The transverse spring is located on one side inside the pipe and is used to push the push plate. The end cap is used to block the connecting pipe away from the drainage pipe and is fixedly connected to the push plate. A top head is fixedly connected to the end cap.

[0015] Furthermore, the urine inlet tube mechanism includes a compression spring, a retaining ring, a urine outlet tube, and a sealing cylinder with one end sealed. The urine outlet tube is fixedly connected to the urine collection bag. The compression spring, retaining ring, and sealing cylinder are located inside the urine outlet tube. The sealing cylinder is located at the end of the urine outlet tube away from the end of the urine collection bag. The compression spring is located between the sealing cylinder and the retaining ring. The urine outlet tube is provided with a liquid inlet near the sealing cylinder; The sealing column is provided with multiple liquid inlet grooves; The outer surface of the urinary tube is threadedly connected to the inner surface of the connecting tube by a threaded component. The inlet hole at the front end of the urinary tube and the sealing cylinder extend into the connecting tube to press against the top head.

[0016] Furthermore, the end of the connecting sleeve away from the frustum tube has a rounded corner structure; The end of the frustum tube furthest from the docking sleeve extends outward to form a flared horn.

[0017] The beneficial effects of the present invention are as follows: The present invention provides a catheterization device for urology, in which the catheter is inserted into a frustum tube and the penis is inserted into a connecting sleeve, so that the urethral opening of the penis is aligned with the catheter. Under the action of the squeezing mechanism, the urethral opening is squeezed open. Under the guidance of the horizontal straight section of the support plate, the catheter enters the bladder through the urethral opening, reducing the pain at the urethral opening caused by the bending of the catheter.

[0018] By moving the inner tube, the two annular sealing rings are brought together and, with the help of the cap, the inner tube is blocked, preventing the urine collection bag from rising and causing urine backflow, which could lead to urinary tract infection.

[0019] The urine outlet tube is threadedly connected to the pipe. The end cap protrudes from the connecting pipe through the outlet tube, allowing urine to enter the urine collection bag through the slot, inlet, and outlet tube. When removing the urine collection bag, the outlet tube is rotated to remove it. The end cap is no longer squeezed by the outlet tube. Under the pressure of the transverse spring, the end cap enters the connecting pipe and blocks it, preventing urine from flowing out. The sealing ring is no longer squeezed by the connecting pipe. Under the action of the compression spring, the sealing ring blocks the inlet, preventing urine from flowing out of the collection bag. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a catheterization device for urology according to the present invention.

[0021] Figure 2 This is an enlarged view of point A in a catheterization device for urology according to the present invention.

[0022] Figure 3 This is a cross-sectional view of the docking anti-bending mechanism of a catheterization device for urology according to the present invention.

[0023] Figure 4 This is an exploded view of the docking anti-bending mechanism of a catheterization device for urology according to the present invention.

[0024] Figure 5 This is an enlarged view of point B of a catheterization device for urology according to the present invention.

[0025] Figure 6 This is a cross-sectional view of an anti-backflow plug for a urinary catheterization device used in urology according to the present invention.

[0026] Figure 7 This is an exploded view of an anti-backflow plug for a catheterization device used in urology according to the present invention.

[0027] Figure 8 This is an enlarged view of point C in a catheterization device for urology according to the present invention.

[0028] Figure 9 This is a cross-sectional structural diagram of the inlet tube mechanism of a urinary catheterization device for urology according to the present invention.

[0029] Figure 10 This is an exploded view of the inlet tube mechanism of a catheterization device for urology according to the present invention.

[0030] Figure 11 This is a cross-sectional view of the opening and closing head of a catheterization device for urology according to the present invention.

[0031] Figure 12 This is an exploded view of the opening and closing head of a catheterization device for urology according to the present invention.

[0032] 1. Urinary catheter; 2. Drainage tube; 3. Urine collection bag; 4. Connecting sleeve; 5. Frustum tube; 6. Support plate; 7. Horizontal straight section; 8. Vertical straight section; 9. Curved angle; 10. Protrusion; 11. Pressure plate; 12. Connecting plate; 13. Squeezing plate; 14. Spring; 15. Arc structure; 16. Grille; 17. Connecting sleeve; 18. Inlet head; 19. Inner tube; 20. Fixing strip; 21. Outlet head; 22. Catheter; 23. Sealing ring; 2 4. Moving groove; 25. Push plate; 26. Fixing plate; 27. Plug cap; 28. Frustum cap; 29. ​​Annular sealing ring; 30. Pipe; 31. Push plate; 32. End cap; 33. Transverse spring; 34. Connecting pipe; 35. Compression spring; 36. Retaining ring; 37. Urine outlet tube; 38. Sealing cylinder; 39. Liquid inlet hole; 40. Liquid inlet groove; 41. Rounded corner structure; 42. Flared flare; 43. Slot hole; 44. Top head; 45. Threaded part. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0034] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 The present invention relates to a catheterization device for urology, comprising a catheter 1, a drainage tube 2, and a urine collection bag 3; characterized in that: a docking anti-bending mechanism is sleeved on the outer end of one side of the catheter 1; the docking anti-bending mechanism includes a docking sleeve 4 and a frustum tube 5, wherein the catheter 1 passes through the frustum tube 5 and the docking sleeve 4 in sequence; A support plate 6 is fixedly connected inside the frustum tube 5; the support plate 6 includes a horizontal straight section 7 and a vertical straight section 8, the horizontal straight section 7 and the vertical straight section 8 are integrally formed and connected by an arc angle 9; the vertical cross section of the horizontal straight section 7 is a semi-circular structure; the urinary catheter 1 is in contact with the straight section 7.

[0037] The urinary catheter 1 is a medical tube in the prior art. The urine drainage path is urinary catheter 1, drainage tube 2, urine collection bag 3, and connecting sleeve 4 to support the penis. The connecting sleeve 4, the frustum tube 5, and the horizontal straight section 7 of the support plate 6 can make the urinary catheter 1 aligned with the urethral opening, so that the urinary catheter and the urethra at the urethral opening are in a straight line. The transition of the arc angle 9 avoids the glans penis from touching the support plate 6, which would increase discomfort. The horizontal straight section 7 with a semi-circular vertical cross section better supports the urinary catheter 1.

[0038] The present invention provides a squeezing mechanism for squeezing open the urethral opening on the connecting sleeve 4; the squeezing mechanism includes two protrusions 10 integrally formed with the connecting sleeve 4, each protrusion 10 having a placement groove extending into the interior of the connecting sleeve 4, a pressure plate 11 being provided in the placement groove, a connecting plate 12 extending out of the protrusions 10 being fixedly connected to the pressure plate 11, a squeezing plate 13 being fixedly connected to the end of the connecting plate 12 away from the pressure plate 11, and a spring 14 fixedly connected to the protrusions 10 being fixedly connected to the squeezing plate 13; the pressure plate 11 The end face away from the connecting plate 12 is an arc-shaped structure 15 and is part of the inner diameter circle of the docking sleeve 4. Medical soft pads are laid on the inner wall of the docking sleeve 4, as well as on the pressure plate 11, the frustum tube 5, and the support plate 6. The frustum tube 5 is provided with a grid 16. A connecting sleeve 17 is fixedly connected to the end of the frustum tube 5 near the docking sleeve 4. The connecting sleeve 17 is threadedly connected to the docking sleeve 4. The end of the docking sleeve 4 away from the frustum tube 5 is a rounded corner structure 41. The end of the frustum tube 5 away from the docking sleeve 4 extends outward to form a flared horn 42.

[0039] Squeezing the compression plate 13 allows the pressure plate 11 to emerge from the placement groove, squeezing the upper and lower ends of the penis, thereby opening the urethral opening of the penis and facilitating the insertion of the catheter 1. The placement groove on the protrusion 10 facilitates the placement of the pressure plate 11, and the end face of the pressure plate 11 away from the connecting plate 12 is an arc-shaped structure 15, which is part of the inner diameter circle of the docking sleeve 4, to avoid the pressure plate 11 having a protrusion that would obstruct the penis when it enters the docking sleeve 4 and increase discomfort. The spring 14 allows the pressure plate 11 to be released when the compression plate 13 is not pressed. Under the action of force, it re-enters the placement slot. The medical pad reduces the discomfort of contact between the docking sleeve 4 and the penis. The grid 16 facilitates the observation of whether the urethral opening of the penis and the catheter 1 are aligned. The connecting sleeve 17 is threadedly connected to the docking sleeve 4, which facilitates the disassembly of the docking sleeve and the frustum tube. The end of the docking sleeve 4 away from the frustum tube 5 has a rounded corner structure 41 to avoid damage to the penis. The end of the frustum tube 5 away from the docking sleeve 4 is integrally formed with a flared horn 42 to facilitate the insertion of the catheter 1 into the frustum tube 5.

[0040] The end of the urinary catheter 1 away from the frustum tube 5 is connected to the drainage tube 2 through an adjustable anti-backflow plug; the anti-backflow plug includes an inlet head 18, an inner tube 19, a plugging mechanism, and an outlet head 21, and the inlet head 18 and the outlet head 21 are connected by four fixing strips 20. The inlet head 18 and the outlet head 21 are respectively connected to the conduit 22. The urinary catheter 1 is sleeved on the conduit 22 on the inlet head 18, and the drainage tube 2 is sleeved on the conduit 22 on the outlet head 21. The two ends of the inner tube 19 are respectively connected to the inlet head 18 and the outlet head 21, and the inner tube 19 is provided with an annular groove, and the annular groove is provided with a sealing ring 23 that fits against the inner wall of the inlet head 18 and the outlet head 21. The fixed strip 20 is provided with a moving groove 24, and the inner tube 19 is provided with a push plate 25 that moves within the moving groove 24; The plugging mechanism is located between the liquid outlet head 21 and the inner tube 19. The plugging mechanism includes a plugging head 27 and a frustum cap 28 fixed to the end of the plugging head 27. The plugging head 27 is fixedly connected to the inside of the liquid outlet head 21 by a fixing plate 26. Annular sealing rings 29 are fixedly connected to the outer surface of the plugging head 27 and the inner wall of the inner tube 19.

[0041] The inner tube 19 is moved to the left by the push plate 25, which in turn moves the annular sealing ring 29 to the left. The right annular sealing ring 29 is in contact with the left annular sealing ring 29. The plug head 27 and the truncated cone cap 28 block the right annular sealing ring 29, preventing the urine in the drainage tube 2 and the catheter 1 from flowing back. The sealing ring 23 ensures the sealing between the inner tube 19 and the inlet head 18 and the outlet head 21. The moving groove 24 provides space for the push plate 25 to move left and right. The push plate 25 is in the moving groove 24, which also prevents the inner tube 19 from rotating.

[0042] The drainage tube 2 of the present invention is threadedly connected to the urine inlet tube mechanism provided on the urine collection bag 3 through an opening and closing head provided on the drainage tube 2. The opening and closing head includes a pipe 30, a push plate 31, a sealing head 32, and a transverse spring 33. The two ends of the pipe 30 are respectively connected to connecting pipes 34, and one end of the drainage tube 2 is sleeved on the outer wall of the connecting pipe 34. The push plate 31 is located at the end of the pipe 30 away from the drain pipe 2, and the push plate 31 is provided with a groove 43 for liquid passage; The transverse spring 33 is located on one side inside the pipe 30 and is used to push the push plate 31. The end cap 32 is used to block the connecting pipe 34 away from the drainage pipe 2 and is fixedly connected to the push plate 31. A top head 44 is fixedly connected to the end cap 32.

[0043] The urine inlet mechanism includes a compression spring 35, a retaining ring 36, a urine outlet tube 37, and a sealing cylinder 38 with one end sealed. The urine outlet tube 37 is fixedly connected to the urine collection bag 3. The compression spring 35, the retaining ring 36, and the sealing cylinder 38 are located inside the urine outlet tube 37. The sealing cylinder 38 is located at the end of the urine outlet tube 37 away from the end of the urine collection bag 3. The compression spring 35 is located between the sealing cylinder 38 and the retaining ring 36. The urine outlet tube 37 is provided with an inlet hole 39 near the sealing cylinder 38; The sealing column 38 is provided with multiple liquid inlet grooves 40; The outer surface of the urinary tube 37 is threaded to the inner surface of the connecting tube 34 by a threaded part 45. The inlet hole 39 at the front end of the urinary tube 37 and the sealing cylinder 38 extend into the connecting tube 34 to press against the top head 44.

[0044] The urine outlet tube 37 is threadedly connected to the connecting tube 34, facilitating the disassembly of the urine collection bag 3 and the pipe 30. During disassembly, the urine outlet tube 37 no longer presses against the push plate 31. Under the action of the transverse spring 33, the push plate 31 and the end cap 32 move to the left, blocking the connecting tube 34 on the left side to prevent urine from continuing to flow out of the catheter 1. The top head 44 no longer presses against the sealing cylinder 38. Under the action of the compression spring 35, the sealing cylinder 38 moves to the right, blocking the inlet hole 39 to prevent urine from the urine collection bag 3 from flowing out of the inlet hole 39. The position of the inlet hole 39 on the outer end face of the urine outlet tube 37 is in contact with the pipe 30 to prevent leakage.

[0045] The principle of this invention: In use, the penis is inserted into the docking sleeve 4, and the upper and lower compression plates 13 are pressed, which drives the connecting plate 12 to move and the pressure plate 11 to move. Through the compression of the two pressure plates 11, the urethral opening is opened and aligned with the opening of the frustum tube 5. The catheter 1 is inserted into the frustum tube 5 with tweezers and pushed forward. Under the guidance of the horizontal straight section 7 of the support plate 6, it is aligned with the urethral opening, avoiding the catheter 1 from deviating or bending and not being in a straight line with the urethra. The catheter 1 enters the bladder through the urethral opening for urine drainage.

[0046] Rotate the urinary tube 37, and it will be threaded together with the connecting pipe 34 through the threaded part 45. The urinary tube 37 and the pipe 30 will be relatively displaced. The top head 44 will push against the sealing cylinder 38 and move to the left, while the urinary tube 37 will push against the end cap 32 and move to the right, no longer sealing the connecting pipe 34.

[0047] Push the push plate 25 to the right. The push plate 25 moves in the moving groove 24, causing the inner tube 19 to move to the right. The two annular sealing rings 29 are no longer in contact, and the plug head 27 and the round cap 28 no longer block the annular sealing ring 29 on the right side.

[0048] After the above operations are completed, urine can enter the urine collection bag through catheter 1, drainage tube 2, anti-backflow plug, and urine inlet mechanism.

[0049] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A urinary catheterization device for urological surgery, comprising a catheter (1), a drainage tube (2), and a urine collection bag (3), characterized in that: The catheter (1) is fitted with a docking anti-bending mechanism on one side of its outer end. The docking anti-bending mechanism includes a docking sleeve (4) and a frustum tube (5). The catheter (1) passes through the frustum tube (5) and the docking sleeve (4) in sequence. A support plate (6) is fixedly connected inside the frustum tube (5); the support plate (6) includes a horizontal straight section (7) and a vertical straight section (8), the horizontal straight section (7) and the vertical straight section (8) are integrally formed and connected by an arc angle (9); the vertical section of the horizontal straight section (7) is a semi-circular structure; the catheter (1) is in contact with the straight section (7); The connecting sleeve (4) is threadedly connected to the frustum tube (5), and the connecting sleeve (4) is provided with a squeezing mechanism; The end of the urinary catheter (1) away from the frustum tube (5) is connected to the drainage tube (2) through an adjustable anti-backflow plug; The drainage tube (2) is threadedly connected to the urine inlet tube mechanism on the urine collection bag (3) via an opening and closing head on the drainage tube (2), and the opening and closing head and the urine inlet tube mechanism are self-pressing at the internal connection.

2. The catheterization device for urology according to claim 1, characterized in that: The extrusion mechanism includes two protrusions (10) integrally formed with the docking sleeve (4). The protrusions (10) are provided with a placement groove extending into the docking sleeve (4). A pressure plate (11) is provided in the placement groove. A connecting plate (12) extending out of the protrusions (10) is fixedly connected to the pressure plate (11). A pressing plate (13) is fixedly connected to the end of the connecting plate (12) away from the pressure plate (11). A spring (14) fixedly connected to the protrusions (10) is fixedly connected to the pressing plate (13).

3. A catheterization device for urology according to claim 2, characterized in that: The end face of the pressure plate (11) away from the connecting plate (12) is an arc-shaped structure (15) and is part of the inner diameter circle of the docking sleeve (4). Medical pads are laid on the inner wall of the docking sleeve (4), as well as on the pressure plate (11), the frustum tube (5), and the support plate (6).

4. A catheterization device for urology according to claim 1, characterized in that: The frustum tube (5) is provided with a grid (16), and a connecting sleeve (17) is fixedly connected to the end of the frustum tube (5) near the docking sleeve (4). The connecting sleeve (17) is threadedly connected to the docking sleeve (4).

5. A catheterization device for urology according to claim 1, characterized in that: The anti-backflow plug includes an inlet head (18), an inner tube (19), a plugging mechanism, and an outlet head (21). The inlet head (18) and the outlet head (21) are connected by several fixed strips (20). The inlet head (18) and outlet head (21) are respectively connected to a catheter (22). The urinary catheter (1) is sleeved on the catheter (22) on the inlet head (18), and the drainage tube (2) is sleeved on the catheter (22) on the outlet head (21). The inner tube (19) has two ends that are respectively connected to the inlet head (18) and the outlet head (21), and the inner tube (19) has an annular groove. The annular groove is provided with a sealing ring (23) that fits against the inner wall of the inlet head (18) and the outlet head (21). The fixed strip (20) is provided with a moving groove (24), and the inner tube (19) is provided with a push plate (25) that moves within the moving groove (24). The capping mechanism is located between the liquid outlet (21) and the inner tube (19).

6. A catheterization device for urology according to claim 5, characterized in that: The plugging mechanism includes a plugging head (27) and a frustum cap (28) fixed to the end of the plugging head (27). The plugging head (27) is fixedly connected to the inside of the liquid outlet head (21) by a fixing plate (26). Annular sealing rings (29) are fixedly connected to the outer surface of the plugging head (27) and the inner wall of the inner tube (19).

7. A catheterization device for urology according to claim 1, characterized in that: The opening and closing head includes a pipe (30), a push plate (31), a sealing head (32), and a transverse spring (33); the two ends of the pipe (30) are respectively connected to a connecting pipe (34), and one end of the drain pipe (2) is sleeved on the outer wall of the connecting pipe (34); The push plate (31) is located at the end of the pipe (30) away from the drain pipe (2), and the push plate (31) is provided with a slot (43). The transverse spring (33) is located on one side inside the pipe (30) and is used to push the push plate (31). The end cap (32) is used to block the connecting pipe (34) away from the drainage pipe (2) and is fixedly connected to the push plate (31). A top head (44) is fixedly connected to the end cap (32).

8. A catheterization device for urology according to claim 7, characterized in that: The urine inlet mechanism includes a compression spring (35), a retaining ring (36), a urine outlet tube (37), and a sealing cylinder (38) with one end sealed. The urine outlet tube (37) is fixedly connected to the urine collection bag (3). The compression spring (35), the retaining ring (36), and the sealing cylinder (38) are located inside the urine outlet tube (37). The sealing cylinder (38) is located at the end of the urine outlet tube (37) away from the end of the urine collection bag (3). The compression spring (35) is located between the sealing cylinder (38) and the retaining ring (36). The urine outlet tube (37) is provided with an inlet hole (39) near the sealing cylinder (38); The sealing cylinder (38) is provided with multiple liquid inlet grooves (40); The outer surface of the urinary tube (37) is threadedly connected to the inner surface of the connecting tube (34) by a threaded part (45). The inlet hole (39) at the front end of the urinary tube (37) and the sealing cylinder (38) extend into the connecting tube (34) to press against the top head (44).

9. A catheterization device for urology according to claim 1, characterized in that: The end of the connecting sleeve (4) away from the frustum tube (5) has a rounded corner structure (41). The end of the frustum tube (5) away from the docking sleeve (4) extends outward to form a flared horn (42).

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