A detachable leakage-proof urinary catheter device

Abstract

This invention discloses a detachable leak-proof urinary catheterization device, relating to the field of urological nursing technology. It includes a connector, an insertion / removal body, a positioning connection mechanism, a bidirectional leak-proof mechanism, and a locking mechanism. This invention features a reasonable and simple structure, low production cost, and convenient installation. The positioning connection mechanism achieves precise insertion and double locking, effectively preventing leakage due to loose connections and improving safety. The bidirectional leak-proof mechanism automatically opens during connection and closes during disassembly, forming a double-sided seal that completely solves the problem of urine leakage during disassembly, reducing operational risks and the probability of cross-infection for medical personnel. The detachable design allows for individual disassembly and replacement of each component, reducing overall waste and lowering medical costs. Furthermore, the locking structure and guide groove facilitate convenient assembly and disassembly, and the operation can be judged by the specific structural state, further enhancing usability.

Description

Technical Field

[0001] This invention relates to the field of urological nursing technology, and in particular to a leak-proof catheterization device with detachable components. Background Technology

[0002] In urological nursing, urinary catheterization devices are commonly used medical instruments to assist patients with urination, and are widely used in postoperative rehabilitation, long-term bedridden patients, and patients with urinary system diseases. Traditional urinary catheterization devices typically use a direct connection between the catheter and the collection device, which has revealed several problems during use. First, the connection method is mostly a simple plug-and-play or threaded connection, resulting in poor sealing and easy leakage when the patient moves or the device is accidentally pulled. This not only affects the cleanliness of the nursing environment but may also lead to complications such as local infection in patients. Second, traditional devices are mostly one-piece designs, making it impossible to disassemble and replace individual components. When parts of the structure are damaged or need to be replaced periodically, the entire device often needs to be discarded, increasing medical costs. Third, existing urinary catheterization devices lack effective leak-proof measures during disassembly, and residual urine can easily spill out during disassembly, causing inconvenience to medical staff and posing a risk of cross-infection.

[0003] With the development of medical technology and the increasing demands of patient care, the development of a urinary catheterization device that is structurally stable, easy to assemble and disassemble, and has a highly efficient leak-proof function has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable leak-proof catheterization device to solve the above-mentioned problems, which solves the problems of poor sealing of traditional catheterization devices, inability to disassemble and replace parts individually, and easy leakage during disassembly.

[0005] To address the aforementioned problems, the present invention provides a technical solution: a detachable leak-proof urinary catheterization device, comprising a urinary catheter and a urine collector; further comprising a connector, a pull-in / pull-out body, a positioning connection mechanism, a bidirectional leak-proof mechanism, and a locking mechanism; the lower side of the connector is located at the upper inlet of the urine collector; the lower side of the pull-in / pull-out body is connected to the upper interior of the connector via the positioning connection mechanism; the bidirectional leak-proof mechanism is located inside the pull-in / pull-out body and the connector, and the lower outlet of the bidirectional leak-proof mechanism is connected to the upper inlet of the urine collector; the lower exterior of the urinary catheter is fixedly connected to the upper center of the pull-in / pull-out body via the locking mechanism, and the lower outlet of the urinary catheter is connected to the upper interior of the bidirectional leak-proof mechanism.

[0006] Preferably, the positioning and connecting mechanism includes a clamping structure and a guide locking structure; several clamping structures and guide locking structures are provided between the lower side of the insertion body and the upper side of the connecting body.

[0007] Preferably, the clamping structure includes a guide cavity, a spring, a clamping head, and a clamping groove. The guide cavity is located inside the upper edge of the connector. The clamping groove is located outside the lower side of the insert / remove body. The clamping head is externally and movably connected to the inside of the guide cavity. A spring is provided between one side of the clamping head and the inside of the guide cavity, and the other side of the clamping head is connected to the inside of the clamping groove.

[0008] Preferably, the first clamping groove is a hemispherical groove that matches the outer end of the first clamping head.

[0009] Preferably, the guide locking structure includes a guide groove, an annular locking groove, a second locking head, a second guide cavity, a second spring, a fixing block, and a second locking groove. Vertical guide grooves are provided on both lower outer sides of the insertion / removal body. The annular locking groove is located on the lower outer side of the insertion / removal body, and its interior communicates with the upper opening of the guide groove. A second guide cavity is provided on both the left and right sides of the annular locking groove. The second locking head is movably connected inside the second guide cavity, and a second spring is provided between the inner side of the second locking head and the interior of the second guide cavity. Two fixing blocks are provided, each fixedly connected to the front and rear positions of the upper inner center of the connecting body. A second locking groove is provided on the center of the inner side of each of the two fixing blocks.

[0010] Preferably, the second clamping groove is a hemispherical groove that matches the outer surface of the second end of the clamping head.

[0011] Preferably, the specific structure of the bidirectional leak-proof mechanism includes an inner cavity, a guide hole, a through hole, a fixed tube, a bidirectional leak-proof structure, and an insertion hole; the inner cavity is located in the center of the upper side of the insertion / removal body, and guide holes are provided on both the left and right sides of the bottom surface of the inner cavity; the insertion hole is located in the center of the lower side of the insertion / removal body; the lower side of the fixed tube is fixedly connected to the center of the lower side of the connecting body, and the lower opening of the fixed tube is connected to the inlet of the urine collector; all through holes are provided on the upper left and right sides of the fixed tube, and the external opening of the through hole is connected to the lower opening of the guide hole; the lower side of the bidirectional leak-proof structure is located on the upper side of the inside of the fixed tube, and the upper side of the bidirectional leak-proof structure is located on the upper side of the insertion hole.

[0012] Preferably, the specific structure of the bidirectional leak-proof structure includes a valve core one, a spring three, a top block, a pull rope, a valve core two, a spring four, a tightening wheel, a pulley, a slot, and a fixed outer shell; the valve core one is externally movably connected to the upper side of the insertion hole, a spring three is provided between the upper side of the valve core one and the upper side of the insertion hole, a slot is opened in the center of the bottom surface of the valve core one, and the inside of the slot matches the upper side of the fixed tube; the fixed outer shell is externally fixedly connected to the inner center of the upper side of the fixed tube; the valve core two is externally movably connected to the upper side of the fixed tube, several springs four are provided between the upper side of the valve core two and the upper side of the inner side of the fixed tube; the pulley is movably connected to the left side of the inside of the fixed outer shell; the top block is externally movably connected to the inner side of the upper side of the fixed outer shell, and a tightening wheel is movably connected to the lower side of the top block; the left end of the pull rope is fixedly connected to the inner bottom surface of the center of the valve core two, and the right side of the pull rope is fixedly connected to the inner right side of the fixed outer shell through the pulley; the lower side of the tightening wheel is connected to the pull rope.

[0013] Preferably, the locking mechanism includes a locking nut, a conical sleeve, and a conical hole; the conical hole is located inside the center of the upper side of the conical hole; the outer side of the conical sleeve is located inside the conical hole; the lower side of the catheter is fixedly connected to the inside of the conical hole by the locking nut and the conical sleeve.

[0014] Preferably, the upper outer side of the plug-in body is provided with an anti-slip layer.

[0015] The beneficial effects of the present invention are: (1) The present invention has the characteristics of reasonable and simple structure, low production cost and convenient installation. It achieves precise insertion and double locking through positioning and connecting mechanism, effectively avoiding leakage problems caused by loose connection and improving safety of use.

[0016] (2) The present invention utilizes the characteristics of the bidirectional leak-proof mechanism to automatically open when connected and automatically close when disassembled, forming a bidirectional seal at the top and bottom, which completely solves the problem of urine leakage during disassembly and reduces the operational risks and cross-infection probability of medical staff.

[0017] (3) The present invention adopts a detachable design, and each component can be disassembled and replaced individually, reducing overall waste and lowering medical costs; at the same time, the clamping structure and guide groove make the disassembly and assembly process convenient, and the operation can be judged by the specific structural state, improving the ease of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 for Figure 1 A sectional view.

[0020] Figure 3 This is a schematic diagram of the positioning and connecting mechanism.

[0021] Figure 4 This is a schematic diagram of the clamping structure.

[0022] Figure 5 A schematic diagram of the guide locking structure.

[0023] Figure 6 This is a schematic diagram of the two-way leak-proof mechanism.

[0024] Figure 7 This is a schematic diagram of a two-way leak-proof structure.

[0025] Figure 8 This is a schematic diagram of the locking mechanism.

[0026] 1-Urinary catheter; 2-Urinary collection device; 3-Connector; 4-Insertion / removal body; 5-Positioning connection mechanism; 6-Two-way leak-proof mechanism; 7-Locking mechanism; 51-Clamping structure; 52-Guide locking structure; 511-Guide hole cavity one; 512-Spring one; 513-Clamping head one; 514-Clamping groove one; 521-Guide groove; 522-Annular locking groove; 523-Clamping head two; 524-Guide hole cavity two; 525-Spring two; 526-Fixing block ; 527-Clamping groove two; 61-Inner cavity; 62-Guide hole; 63-Through hole; 64-Fixed pipe body; 65-Two-way leak-proof structure; 66-Insertion hole; 651-Valve core one; 652-Spring three; 653-Top block; 654-Pull rope; 655-Valve core two; 656-Spring four; 657-Tightening wheel; 658-Pulley; 659-Clamping groove; 6510-Fixed outer shell; 71-Locking nut; 72-Conical sleeve; 73-Conical hole. Detailed Implementation

[0027] like Figure 1 and Figure 2 As shown, this specific embodiment adopts the following technical solution: a detachable leak-proof urinary catheter device, including a urinary catheter 1 and a urine collector 2; it also includes a connecting body 3, a pull-in / pull-out body 4, a positioning connection mechanism 5, a bidirectional leak-proof mechanism 6, and a locking mechanism 7; the lower side of the connecting body 3 is located at the upper inlet of the urine collector 2; the lower side of the pull-in / pull-out body 4 is connected to the upper interior of the connecting body 3 through the positioning connection mechanism 5; the bidirectional leak-proof mechanism 6 is located inside the pull-in / pull-out body 4 and the connecting body 3, and the lower outlet of the bidirectional leak-proof mechanism 6 is connected to the upper inlet of the urine collector 2; the lower exterior of the urinary catheter 1 is fixedly connected to the upper center of the pull-in / pull-out body 4 through the locking mechanism 7, and the lower outlet of the urinary catheter 1 is connected to the upper interior of the bidirectional leak-proof mechanism 6.

[0028] like Figure 3As shown, the specific structure of the positioning connection mechanism 5 includes a clamping structure 51 and a guide locking structure 52; several clamping structures 51 and guide locking structures 52 are provided between the lower side of the plug-in body 4 and the upper side of the connector 3.

[0029] like Figure 4 As shown, the specific structure of the clamping structure 51 includes a guide cavity 511, a spring 512, a clamping head 513, and a clamping groove 514. The guide cavity 511 is located inside the upper edge of the connector 3. The clamping groove 514 is located outside the lower side of the insert / extractor 4. The clamping head 513 is externally movably connected to the inside of the guide cavity 511. A spring 512 is provided between one side of the clamping head 513 and the inside of the guide cavity 511, and the other side of the clamping head 513 is connected to the inside of the clamping groove 514.

[0030] The clamping groove 514 is a hemispherical groove that matches the outer end of the clamping head 513.

[0031] like Figure 5 As shown, the specific structure of the guide locking structure 52 includes a guide groove 521, an annular locking groove 522, a second locking head 523, a second guide cavity 524, a second spring 525, a fixing block 526, and a second locking groove 527. Vertical guide grooves 521 are provided on both lower outer sides of the plug-in body 4. The annular locking groove 522 is located on the lower outer side of the plug-in body 4, and its interior is connected to the upper opening of the guide groove 521. Second guide cavities 524 are provided on both the left and right sides of the annular locking groove 522. The second locking head 523 is movably connected inside the second guide cavity 524, and a second spring 525 is provided between the inner side of the second locking head 523 and the interior of the second guide cavity 524. Two fixing blocks 526 are provided, each fixedly connected to the front and rear positions of the upper inner center of the connecting body 3. A second locking groove 527 is provided on the center of the inner side of each of the two fixing blocks 526.

[0032] The second clamping groove 527 is a hemispherical groove that matches the outer end of the second clamping head 523.

[0033] like Figure 6As shown, the specific structure of the bidirectional leak-proof mechanism 6 includes an inner cavity 61, a guide hole 62, a through hole 63, a fixed tube 64, a bidirectional leak-proof structure 65, and an insertion hole 66. The inner cavity 61 is located in the center of the upper side of the insert / remove body 4, and guide holes 62 are provided on both the left and right sides of the bottom surface of the inner cavity 61. The insertion hole 66 is located in the center of the lower side of the insert / remove body 4. The lower side of the fixed tube 64 is fixedly connected to the center of the lower side of the connecting body 3. The lower opening of the fixed tube 64 is connected to the inlet of the urine collector 2. All through holes 63 are provided on the upper left and right sides of the fixed tube 64, and the external opening of the through hole 63 is connected to the lower opening of the guide hole 62. The lower side of the bidirectional leak-proof structure 65 is located on the upper side of the inside of the fixed tube 64, and the upper side of the bidirectional leak-proof structure 65 is located on the upper side of the insertion hole 66.

[0034] like Figure 7 As shown, the specific structure of the bidirectional leak-proof structure 65 includes a valve core 651, a spring 652, a top block 653, a pull rope 654, a valve core 655, a spring 656, a tensioning wheel 657, a pulley 658, a slot 659, and a fixed outer shell 6510. The valve core 651 is externally movably connected to the upper side of the insertion hole 66. A spring 652 is provided between the upper side of the valve core 651 and the upper side of the insertion hole 66. A slot 659 is provided in the center of the bottom surface of the valve core 651, and the inside of the slot 659 matches the upper outside of the fixed tube body 64. The fixed outer shell 6510 is externally fixedly connected to the inner center of the upper side of the fixed tube body 64. The valve core 655 is externally and movably connected to the upper side of the fixed tube 64. Several springs 656 are provided between the upper side of the valve core 655 and the upper side of the fixed tube 64. The pulley 658 is movably connected to the left side of the fixed housing 6510. The top block 653 is externally and movably connected to the upper side of the fixed housing 6510. A tensioning wheel 657 is movably connected to the lower side of the top block 653. The left end of the pull rope 654 is fixedly connected to the bottom center of the valve core 655. The right side of the pull rope 654 is fixedly connected to the right side of the fixed housing 6510 via the pulley 658. The lower side of the tensioning wheel 657 is connected to the pull rope 654.

[0035] like Figure 8 As shown, the locking mechanism 7 includes a locking nut 71, a conical sleeve 72, and a conical hole 73. The conical hole 73 is located inside the center of the upper side of the conical hole 73. The outer side of the conical sleeve 72 is located inside the conical hole 73. The lower side of the catheter 1 is fixedly connected to the inside of the conical hole 73 by the locking nut 71 and the conical sleeve 72.

[0036] The upper outer side of the plug-in body 4 is provided with an anti-slip layer.

[0037] The invention is used as follows: It features a simple and reasonable structure, low production cost, and convenient installation. In use, firstly, the lower outer side of the catheter 1 is fixed to the center of the upper side of the insertion / removal body 4 using the locking mechanism 7. Specifically, the tapered hole 73 of the locking mechanism 7 is located in the center of the upper side of the insertion / removal body 4, and the tapered sleeve 72 is inserted into the tapered hole 73. After the lower side of the catheter 1 passes through the tapered sleeve 72, the tapered sleeve 72 is compressed by the locking nut 71, causing it to expand and clamp the catheter 1, thereby achieving a sealed fixation. Next, the lower side of the insertion / removal body 4 is inserted into the upper interior of the connecting body 3. Insertion can only continue if the guide groove 521 is engaged with the corresponding fixing block 526. This prevents liquid leakage caused by random insertion. As the device is fully inserted, the locking head 523, under the action of the spring 525, embeds into the locking groove 527 of the fixing block 526, completing the initial positioning and locking. Simultaneously, the fixing tube 64 causes the valve core 651 to move upwards, exposing the lower opening of the guide hole 62. Additionally, the top block 653 moves downwards, pushing the pull rope 654 via the top wheel 657. This allows the pull rope 654 to pull the valve core 655 upwards, exposing the through hole 63. Then, rotating the insertion / removing body 4 causes the fixing block 526 to enter the annular locking groove 522, ensuring that the insertion / removing body 4 cannot move up or down at this point. Continued rotation will... The clamping head 513 is inserted into the clamping groove 514 to complete the clamping and fixing. At the same time as the clamping and fixing is rotated, the through hole 63 is also rotated to the lower opening position of the guide hole 62 to form a connection. Then the catheterization operation can be performed. Specifically, during catheterization, urine flows from the lower outlet of the catheter 1 into the inner cavity 61 on the upper side of the insertion and removal body 4, and flows downward through the guide hole 62 on the bottom surface of the inner cavity 61. At this time, the lower opening of the guide hole 62 is connected to the through hole 63 on the upper side of the fixed tube body 64. The urine enters the fixed tube body 64 through the through hole 63 and finally flows into the urine collector 2. When disassembling, first rotate the insertion and removal body 4 in the opposite direction to make the clamping head 513 disengage from the clamping groove 514. 4. The fixing block 526 slides back from the annular locking groove 522 to the top of the guide groove 521. Here, the state of the locking head 2 523 being inserted into the locking groove 2 527 can easily determine whether the plug-in body 4 has been rotated into place, which greatly facilitates disassembly. Then, the plug-in body 4 can be directly pulled out to complete the disassembly. During the process of pulling out the plug-in body 4, the valve core 1 651 moves down under the action of the spring 3 652 to block the lower opening of the guide hole 62, while the valve core 2 655 moves down under the action of the spring 4 656 to block the through hole 63 on the upper side of the fixing tube 64, preventing urine from flowing back or leaking from the urine collector 2, thereby avoiding liquid leakage after disassembly.

[0038] The control method of this invention is either manual start-up or control through existing automation technology. The wiring diagram of the power element and the supply of power are common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail here.

[0039] In the description of the invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications may be made to the invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A detachable leak-proof urinary catheter device, comprising a urinary catheter (1) and a urine collector (2); characterized in that: It also includes a connector (3), a plug-in body (4), a positioning connection mechanism (5), a two-way leak-proof mechanism (6), and a locking mechanism (7); The lower side of the connector (3) is located at the upper inlet of the urine collector (2); The lower side of the plug-in body (4) is connected to the upper interior of the connector (3) through a positioning connection mechanism (5); The bidirectional leak prevention mechanism (6) is located inside the insertion / removal body (4) and the connecting body (3), and the lower outlet of the bidirectional leak prevention mechanism (6) is connected to the upper inlet of the urine collector (2). The lower outer side of the catheter (1) is fixedly connected to the upper center of the insertion / removal body (4) by a locking mechanism (7), and the lower outlet of the catheter (1) is connected to the upper interior of the bidirectional leak prevention mechanism (6).

2. The detachable leak-proof catheterization device according to claim 1, characterized in that: The specific structure of the positioning and connecting mechanism (5) includes a clamping structure (51) and a guide locking structure (52). Several locking structures (51) and guide locking structures (52) are provided between the lower side of the plug-in body (4) and the upper side of the connector (3).

3. The detachable leak-proof catheterization device according to claim 2, characterized in that: The specific structure of the clamping structure (51) includes a guide hole cavity (511), a spring (512), a clamping head (513), and a clamping groove (514). The guide hole cavity (511) is located inside the upper edge of the connector (3); The locking groove (514) is located on the lower outer side of the insertion body (4); The clamping head (513) is externally movably connected to the inside of the guide hole cavity (511). A spring (512) is provided between one side of the clamping head (513) and the inside of the guide hole cavity (511), and the other side of the clamping head (513) is connected to the inside of the clamping groove (514).

4. The detachable leak-proof catheterization device according to claim 3, characterized in that: The clamping groove (514) is a hemispherical groove that matches the outer end of the clamping head (513).

5. The detachable leak-proof catheterization device according to claim 2, characterized in that: The specific structure of the guide locking structure (52) includes a guide groove (521), an annular locking groove (522), a second clamping head (523), a second guide hole cavity (524), a second spring (525), a fixing block (526), ​​and a second clamping groove (527). The plug-in body (4) has vertical guide grooves (521) on both sides of its lower outer side. The annular locking groove (522) is located on the lower side of the outside of the plug-in body (4). The interior of the annular locking groove (522) is connected to the upper opening of the guide groove (521). Guide holes (524) are provided on both the left and right sides of the annular locking groove (522). The clamping head two (523) is movably connected inside the guide hole cavity two (524), and a spring two (525) is provided between the inner side of the clamping head two (523) and the inside of the guide hole cavity two (524). There are two fixing blocks (526), ​​which are fixedly connected to the front and rear positions of the upper inner center of the connecting body (3). Each of the two fixing blocks (526) has a clamping groove (527) in the center of its inner side.

6. The detachable leak-proof catheterization device according to claim 5, characterized in that: The second clamping groove (527) is a hemispherical groove that matches the outer end of the second clamping head (523).

7. The detachable leak-proof catheterization device according to claim 1, characterized in that: The specific structure of the bidirectional leak-proof mechanism (6) includes an inner cavity (61), a guide hole (62), a through hole (63), a fixed tube body (64), a bidirectional leak-proof structure (65), and an insertion hole (66). The inner cavity (61) is located in the center of the upper side of the insert body (4), and the bottom surface of the inner cavity (61) is provided with guide holes (62) on both the left and right sides. The insertion hole (66) is located inside the center of the lower side of the plug-in body (4); The lower side of the fixed tube (64) is fixedly connected to the lower center of the connector (3). The lower opening of the fixed tube (64) is connected to the inlet of the urine collector (2). All through holes (63) are opened on the upper left and right sides of the fixed tube (64), and the external opening of the through hole (63) is connected to the lower opening of the guide hole (62). The lower side of the bidirectional leak-proof structure (65) is located inside the upper side of the fixed tube (64), and the upper side of the bidirectional leak-proof structure (65) is located on the upper side of the insertion hole (66).

8. The component-detachable leak-proof catheterization device according to claim 7, characterized in that: The specific structure of the bidirectional leak-proof structure (65) includes valve core one (651), spring three (652), top block (653), pull rope (654), valve core two (655), spring four (656), top tightening wheel (657), pulley (658), and slot (659) and fixed housing (6510). The valve core (651) is externally movably connected to the upper side of the socket (66). A spring (652) is provided between the upper side of the valve core (651) and the upper side of the socket (66). A slot (659) is provided in the center of the bottom surface of the valve core (651), and the inside of the slot (659) matches the upper outside of the fixed tube (64). The fixed outer shell (6510) is externally fixedly connected to the upper center of the fixed tube body (64); The valve core 2 (655) is externally movably connected to the upper side of the fixed tube (64), and several springs 4 (656) are provided between the upper side of the valve core 2 (655) and the upper side of the fixed tube (64). The pulley (658) is movably connected to the left side inside the fixed housing (6510); The top block (653) is externally movably connected to the upper interior of the fixed housing (6510), and a top clamping wheel (657) is movably connected to the lower interior of the top block (653). The left end of the pull rope (654) is fixedly connected to the bottom surface of the center of the valve core (655), and the right side of the pull rope (654) is fixedly connected to the right side of the inside of the fixed housing (6510) through the pulley (658). The lower side of the tensioning wheel (657) is connected to the pull rope (654).

9. The component-detachable leak-proof catheterization device according to claim 1, characterized in that: The specific structure of the locking mechanism (7) includes a locking nut (71), a tapered sleeve (72), and a tapered hole (73). The conical hole (73) is opened in the center of the upper side of the conical hole (73); The outside of the tapered sleeve (72) is located inside the tapered hole (73); The lower side of the catheter (1) is fixedly connected to the inside of the conical hole (73) by a locking nut (71) and a conical sleeve (72).

10. The component-detachable leak-proof catheterization device according to claim 1, characterized in that: The upper outer side of the plug-in body (4) is provided with an anti-slip layer.

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