Device for automatically opening and closing indwelling catheter

Abstract

The invention belongs to the field of nursing, and provides a device for automatic opening and closing of an indwelling catheter, the device comprises a top plate, the top of the top plate is provided with a flow limiting block, both sides of the top of the top plate are provided with through grooves, and inner cavities of the through grooves are horizontally provided with reset mechanisms; the problem of irregular urination caused by negligence of manual operation is effectively avoided, the working intensity of nursing personnel is relieved, and the rehabilitation efficiency of a patient is improved; meanwhile, the whole control system adopts a closed structure and is connected with a medical differential pressure sensor through a sterile extension tube, so that the frequency of directly contacting the catheter by medical personnel is reduced, and the risks of bacterial propagation and cross infection are greatly reduced; in addition, a gear shifting mechanism and a buffer control mechanism are further introduced into the device, the gas flow is adjusted by switching a large opening or a small opening, and the moving speed and the clamping force of the flow limiting pipe are accurately controlled.

Description

Technical Field

[0001] This invention belongs to the field of nursing, specifically a device for automatic switching of indwelling urinary catheters. Background Technology

[0002] An automatic switch for indwelling urinary catheters is a device used in medical care to automatically control the opening and closing of urinary catheters placed in the patient's body. This device is typically used in clinical scenarios such as postoperative recovery, urinary incontinence, and bladder dysfunction, where long-term indwelling catheters are required. It aims to reduce the frequency of manual intervention and improve nursing efficiency and safety through automated control. As a key component of the urinary drainage system, its control method and operational performance have a decisive impact on patient comfort, infection risk control, and nursing efficiency. Especially in the core aspect of timed urination control, existing manual or electronically controlled switch devices have gradually revealed their limitations when dealing with requirements such as frequent opening and closing and aseptic operation.

[0003] Specifically, existing catheter switching devices for indwelling urinary catheters face problems such as inconvenience in operation, low efficiency, and unstable quality in actual use. In order to keep the bladder in a simulated normal pressure environment, the catheter switch needs to be manually opened or closed by medical staff at regular intervals. This manual method not only increases the workload of nursing staff, but also easily leads to irregular urination intervals due to human negligence, affecting the patient's recovery. More seriously, in the presence of pathogenic bacteria in the use environment, medical staff must perform hand disinfection and cleaning after each operation. Frequent manual opening and closing operations increase the risk of medical staff coming into contact with bacteria, which may lead to cross-infection and threaten the health of patients and medical staff. In addition, although some catheter switching devices using electronic control have achieved automated control, their switching action lacks a buffer mechanism, and the opening process is relatively abrupt. They cannot flexibly adjust the opening and closing speed and force according to the actual use scenario. This rigid control method not only reduces the patient's comfort, but also limits the adaptability and compatibility of the device in different conditions and environments.

[0004] To address the problems raised in the background art, those skilled in the art have proposed a device for automatic switching of indwelling urinary catheters. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a device for automatic switching of indwelling urinary catheters. This addresses the issue that in existing technologies, to maintain a pressure environment simulating normal physiological conditions within the bladder, the current catheter switch requires manual opening and closing by medical staff at regular intervals. This manual operation not only increases the workload of nursing staff but also easily leads to irregular urination due to negligence, affecting patient recovery. More seriously, in environments containing pathogens, frequent contact and disinfection increase the risk of infection for medical personnel, potentially causing cross-infection and threatening the health of both medical staff and patients. While some electronically controlled devices achieve automation, their switching actions lack buffering, are abrupt, and cannot adjust speed and force according to actual needs, affecting user comfort and applicability.

[0006] A device for automatic switching of indwelling urinary catheters includes a top plate, a flow limiting block is provided on the top of the top plate, and through slots are provided on both sides of the top of the top plate. A reset mechanism is horizontally provided in the inner cavity of the through slots. The reset mechanism includes a connecting plate. A vertical plate penetrating adjacent through slots is fixedly connected to one end of the connecting plate, and a push plate is fixedly connected to one side of the vertical plate.

[0007] A diversion mechanism is provided on one side of the bottom of the top plate, and the diversion mechanism includes a housing. A diversion channel is opened on one side of the outer wall of the housing, and a round rod is slidably connected to the inner cavity of the diversion channel. One end of the round rod is fixedly connected to one side of the adjacent push plate.

[0008] A pressurizing mechanism is provided on one side of the housing, and the pressurizing mechanism includes a pump, and the output end of the pump is fixedly connected to an output pipe.

[0009] Preferably, a bottom plate is provided below the top plate, and connecting columns are fixedly connected to the four corners of the bottom of the bottom plate. The top of the connecting columns is fixedly connected to the bottom of the adjacent top plate. A urinary catheter is provided above the top plate, and one end of the urinary catheter passes through the side wall of the top plate and the side wall of the bottom plate in sequence. A vertical tube is fitted around the outer ring of the urinary catheter. One end of the vertical tube is fixedly connected to the bottom of the top plate, and the other end of the vertical tube is fixedly connected to the top of the bottom plate.

[0010] Preferably, a damper is fixedly connected to one side of the inner wall of the through groove, one end of the damper is fixedly connected to one side of the adjacent connecting plate, and a spring is sleeved on the outer ring of the damper. One end of the spring is fixedly connected to the inner wall of the adjacent through groove, and the other end of the spring is fixedly connected to one side of the adjacent connecting plate. The outer ring of the connecting plate is adapted to the inner cavity of the adjacent through groove.

[0011] Preferably, the top of the outer shell is fixedly connected to the bottom of the top plate, a transmission channel is provided on one side of the outer shell, the inner cavities of the two diversion channels are connected to the inner cavities of the transmission channel, and a rubber sealing ring is fixedly connected to one end of the round rod, the outer ring of the rubber sealing ring is in contact with the inner wall of the adjacent diversion channel.

[0012] Preferably, a mounting groove is provided on one side of the bottom of the top plate, and a fixed seat is slidably connected to the inner cavity of the mounting groove. Guide grooves are provided on both sides of the bottom of the top plate, and sliding blocks that are adapted to the guide grooves are fixedly connected to both sides of the top of the pump.

[0013] Preferably, a second damper is fixedly connected to one side of the sliding block, and one end of the second damper is fixedly connected to the inner wall of the adjacent mounting groove. A second spring is sleeved on the outer ring of the second damper, one end of the second spring is fixedly connected to the inner wall of the adjacent mounting groove, and the other end of the second spring is fixedly connected to one side of the adjacent fixed seat.

[0014] Preferably, a gear-adjusting mechanism is horizontally arranged between the pressurizing mechanism and the diverting mechanism. The gear-adjusting mechanism includes a movable rod, one end of which is fixedly connected to a disc. A large opening and a small opening are respectively opened on both sides of the outer wall of one side of the disc. A docking cap tube one and a docking cap tube two are respectively fixedly connected to both ends of the disc. The inner cavities of docking cap tube one and docking cap tube two are both connected to the inner cavity of the small opening. The inner cavity of docking cap tube two is connected to the inner cavity of the adjacent output tube.

[0015] Preferably, the inner cavity of the docking cap tube is fitted with a guide tube, one end of the guide tube is fixedly connected to one side of the adjacent outer shell, and the inner cavity of the guide tube is connected to the inner cavity of the transmission channel. The outer ring of the output tube is adapted to the inner cavity of the large opening, and the outer ring of the output tube is fitted with a limiting square ring, and one end of the limiting square ring is in contact with one end of the adjacent docking cap tube.

[0016] Preferably, a connecting seat is fixedly connected to the bottom of the top plate, and a limit gasket is fixedly connected to one end of the movable rod through the side wall of the connecting seat.

[0017] Preferably, a handle is fixedly connected to the side of the pump away from the output pipe, and an integrated microcontroller body is fixedly connected to the top side of the top plate, with one end of the integrated microcontroller body connected to one end of the pump via a wire.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention replaces the traditional manual timed switching method with automated control, effectively avoiding irregular urination caused by human error, reducing the workload of nursing staff, and improving patient recovery efficiency. Simultaneously, the control system adopts a closed structure and connects to a medical differential pressure sensor via a sterile extension tube, reducing the frequency of direct contact between medical staff and the catheter, thereby significantly reducing the risk of bacterial transmission and cross-infection. Furthermore, the device incorporates an adjustment mechanism and a buffer control mechanism, allowing for precise control of the flow rate and clamping force of the flow-limiting tube by switching between large and small openings. This meets the needs of various clinical scenarios, from emergency depressurization in the ICU to simulating normal urination curves in general wards, improving the adaptability of the equipment and patient comfort.

[0020] 2. This invention, through the design of a pressurizing mechanism and its internal components—a pump, a sliding block, a fixed base, a second damper, a second spring, a handle, an output tube, and a limiting square ring—achieves efficient driving and stable control of the catheter clamping and opening process. The pump, as the core power source, can quickly respond to feedback signals from the pressure sensor and automatically control the inhalation and output of gas, enhancing the device's intelligence level. The sliding block, in conjunction with the guide groove, ensures the pump's linear stability during operation, preventing movement deviation that could lead to jamming or wear. The second damper and the second spring work together to provide reset power while absorbing vibration shock, enhancing the system's stability and safety. Operators can manually adjust the pump position via the handle, enabling gear adjustment and improving the human-machine interface. The structural cooperation between the output tube and the limiting square ring ensures the reliability and sealing of the gas connection, thereby guaranteeing stable and safe operation of the device in various clinical scenarios.

[0021] 3. This invention, through the design of its diversion mechanism and component housing, round rod, rubber sealing ring, diversion channel, and transmission channel, achieves efficient transmission and uniform distribution of gas pressure, ensuring the synchronicity and stability of the catheter clamping and releasing actions. The housing, as a supporting structure, provides sealing and protection for the internal gas path system. The transmission channel receives gas from the pump and evenly delivers the gas to the flow-limiting mechanisms on both sides through two diversion channels, ensuring the consistency of actions on both sides. The round rod, in conjunction with the rubber sealing ring, slides within the diversion channel, effectively preventing gas leakage and improving the system's sealing performance and response efficiency. This structural design not only enhances the reliability of the device's operation but also improves gas utilization, reduces energy loss, and makes the opening and closing process of the catheter more precise and gentle, suitable for pressure control needs in various clinical scenarios. Attached Figure Description

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

[0023] Figure 2 This is a schematic diagram of the base plate structure of the present invention;

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

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

[0026] Figure 5 This is a schematic diagram of the rubber sealing ring structure of the present invention;

[0027] Figure 6 This is a cross-sectional view of the outer casing of the present invention;

[0028] Figure 7 This is a schematic diagram of the output tube structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the sliding block structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the through-slot structure of the present invention.

[0031] In the diagram: 1. Top plate; 2. Integrated microcontroller body; 3. Base plate; 4. Current limiting block; 5. Connecting column; 6. Vertical pipe; 7. Reset mechanism; 701. Damper one; 702. Spring one; 703. Connecting plate; 704. Vertical plate; 705. Push plate; 8. Pressurization mechanism; 801. Pump; 802. Sliding block; 803. Fixed base; 804. Damper two; 805. Spring two; 806. Handle; 807. Output pipe; 808. Limit switch 9. Square ring; 10. Diverting mechanism; 11. Outer shell; 12. Round rod; 13. Rubber sealing ring; 14. Diverting channel; 15. Transmission channel; 16. Guide groove; 17. Through groove; 18. Adjusting mechanism; 19. Disc; 10. Guide tube; 11. Docking cap tube one; 12. Connecting seat; 12. Movable rod; 13. Limiting gasket; 14. Large opening; 15. Docking cap tube two; 16. Mounting groove. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] As attached Figure 1 To be continued Figure 9 As shown:

[0034] Example 1: The present invention provides a device for automatic switching of indwelling urinary catheter, including a top plate 1, a flow limiting block 4 is provided on the top of the top plate 1, and through grooves 11 are provided on both sides of the top of the top plate 1. A reset mechanism 7 is horizontally provided in the inner cavity of the through grooves 11. The reset mechanism 7 includes a connecting plate 703. One end of the connecting plate 703 is fixedly connected to a vertical plate 704 that penetrates the adjacent through grooves 11. A push plate 705 is fixedly connected to one side of the vertical plate 704.

[0035] A diversion mechanism 9 is provided on one side of the bottom of the top plate 1, and the diversion mechanism 9 includes a housing 901. A diversion channel 904 is provided on one side of the outer wall of the housing 901, and a round rod 902 is slidably connected to the inner cavity of the diversion channel 904. One end of the round rod 902 is fixedly connected to one side of the adjacent push plate 705.

[0036] A pressurizing mechanism 8 is provided on one side of the housing 901, and the pressurizing mechanism 8 includes a pump 801, and the output end of the pump 801 is fixedly connected to an output pipe 807.

[0037] As described above, in actual operation, medical personnel first pass the catheter sequentially through the inner cavities of the flow-limiting block 4, the top plate 1, the vertical tube 6, and the bottom plate 3. Then, one end of the catheter is connected to the patient's bladder, and the other end to the urine bag. Next, a sterile extension tube connects the external port of the catheter to a medical differential pressure sensor. The reference plane of the sensor or three-way valve is adjusted to the upper edge of the patient's pubic symphysis, aligned with the bladder level, to avoid measurement errors caused by body position or height differences. After draining the tubing and venting the air, 25 mL of adult sterile saline is injected into the bladder to form a closed water column. After zeroing the sensor, changes in bladder pressure can be monitored in real time. Depending on different clinical needs... In scenarios such as emergency decompression needs in the ICU or sudden bladder hypertension crisis requiring rapid decompression, medical staff can pre-adjust the adjustment mechanism 12. Specifically, pulling the handle 806 outwards moves the pump 801 horizontally, disengaging the output pipe 807 from the corresponding connecting cap pipe 1208. Then, the disc 1201 is moved horizontally, causing the movable rod 1205 to slide within the connecting seat 1204. The disc 1201 is rotated so that the large opening 1207 aligns with the output pipe 807. Releasing the handle 806, the fixed seat 803 is forced back to its original position by the damper 804 and spring 805. Simultaneously, the output tube 807 moves the limiting square ring 808, pushing the disc 1201 back to its original position, allowing the output tube 807 to pass through the large opening 1207 and connect with the guide tube 1202, thus completing the pre-setting; when the system detects that the bladder pressure exceeds the set threshold, the integrated microcontroller body 2 will send an opening signal to the suction pump 801. The suction pump 801 draws in air and transmits it through the output tube 807 to the guide tube 1202, entering the transmission channel 905 inside the outer shell 901. After the gas is separated by two diversion channels 904, it pushes the rubber sealing ring 903 and the corresponding round rod 902 to move, driving the push plate 705, the vertical plate 704 and the connecting plate 703 to move synchronously, thereby pushing the flow limiting block 4 to move; due to the catheter Because the vertical tube 6 limits the flow, the flow-limiting block 4 will not deviate. Therefore, the movement of the flow-limiting block 4 gradually widens its inner cavity, relieving the compression on the catheter and allowing urine to be discharged quickly, achieving efficient pressure relief. When the pressure sensor returns the pressure to normal, the integrated microcontroller 2 controls the pump 801 to stop running. At this time, the connecting plate 703 moves in the opposite direction under the action of the damper 701 and the spring 702, driving the flow-limiting block 4 to reset. Its inner cavity gradually narrows, reapplying clamping action to the catheter and completing the closing action. In daily use in ordinary wards, the output tube 807 can be connected to the small opening to make the movement speed of the flow-limiting block 4 moderate, simulating the detrusor muscle contraction curve, which is suitable for the needs of patients for long-term clamping training.

[0038] This solution replaces the traditional manual timed switching method with automated control, reducing the workload of nursing staff, minimizing irregular urination caused by human error, and improving patient recovery efficiency. Secondly, the entire control system adopts a closed structure, combined with the connection between the sterile extension tube and the medical differential pressure sensor, significantly reducing the frequency of direct contact between medical staff and the catheter, thereby effectively reducing the risk of bacterial transmission due to frequent manual operation and preventing cross-infection. Furthermore, the device incorporates a setting mechanism 12 and a buffer control mechanism, allowing for the selection of different settings... The gas flow rate can be flexibly adjusted by using different opening sizes, such as large opening 1207 or small opening, thereby controlling the moving speed and force of the flow restrictor 4. This enables multi-mode switching from rapid pressure relief to simulating a normal urination curve, meeting the diverse needs of different clinical scenarios such as ICU emergency care and long-term care in general wards. At the same time, during the opening and closing process, the synergistic action of damper 701, spring 702, damper 804, and spring 805 effectively reduces the impact of mechanical action, making the clamping and releasing process of the catheter gentler and improving the patient's comfort.

[0039] Example 2: This example is basically the same as the previous example, except that a bottom plate 3 is provided below the top plate 1, and connecting posts 5 are fixedly connected to the four corners of the bottom of the bottom plate 3. The top of the connecting posts 5 is fixedly connected to the bottom of the adjacent top plate 1. A urinary catheter is provided above the top plate 1, and one end of the urinary catheter passes through the side wall of the top plate 1 and the side wall of the bottom plate 3 in sequence. A vertical tube 6 is fitted around the outer ring of the urinary catheter. One end of the vertical tube 6 is fixedly connected to the bottom of the top plate 1, and the other end of the vertical tube 6 is fixedly connected to the top of the bottom plate 3.

[0040] A damper 701 is fixedly connected to one side of the inner wall of the through groove 11. One end of the damper 701 is fixedly connected to one side of the adjacent connecting plate 703. A spring 702 is sleeved on the outer ring of the damper 701. One end of the spring 702 is fixedly connected to the inner wall of the adjacent through groove 11, and the other end of the spring 702 is fixedly connected to one side of the adjacent connecting plate 703. The outer ring of the connecting plate 703 is adapted to the inner cavity of the adjacent through groove 11.

[0041] The top of the outer casing 901 is fixedly connected to the bottom of the top plate 1. A transmission channel 905 is provided on one side of the outer casing 901. The inner cavities of the two diversion channels 904 are connected to the inner cavities of the transmission channel 905. A rubber sealing ring 903 is fixedly connected to one end of the round rod 902. The outer ring of the rubber sealing ring 903 is in contact with the inner wall of the adjacent diversion channel 904.

[0042] A mounting groove 13 is provided on one side of the bottom of the top plate 1, and a fixed seat 803 is slidably connected to the inner cavity of the mounting groove 13. Guide grooves 10 are provided on both sides of the bottom of the top plate 1, and sliding blocks 802 that are adapted to the guide grooves 10 are fixedly connected to both sides of the top of the pump 801.

[0043] A second damper 804 is fixedly connected to one side of the sliding block 802, and one end of the second damper 804 is fixedly connected to the inner wall of the adjacent mounting groove 13. A second spring 805 is sleeved on the outer ring of the second damper 804. One end of the second spring 805 is fixedly connected to the inner wall of the adjacent mounting groove 13, and the other end of the second spring 805 is fixedly connected to one side of the adjacent fixed seat 803.

[0044] A gear-adjusting mechanism 12 is horizontally arranged between the pressurizing mechanism 8 and the diverting mechanism 9. The gear-adjusting mechanism 12 includes a movable rod 1205. One end of the movable rod 1205 is fixedly connected to a disc 1201. A large opening 1207 and a small opening are respectively opened on both sides of the outer wall of one side of the disc 1201. A first docking cap tube 1203 and a second docking cap tube 1208 are respectively fixedly connected to both ends of the disc 1201. The inner cavities of the first docking cap tube 1203 and the second docking cap tube 1208 are both connected to the inner cavity of the small opening. The inner cavity of the second docking cap tube 1208 is connected to the inner cavity of the adjacent output pipe 807.

[0045] As can be seen from the above, the coordinated arrangement of the top plate 1, bottom plate 3, connecting column 5, and vertical pipe 6 ensures that the catheter is limited by the vertical pipe 6 during operation, preventing it from shifting or twisting during clamping or release. This improves the overall structural stability and the reliability of the catheter operation, enhancing the safety and control precision of the device. The coordinated arrangement of the through groove 11, damper 701, spring 702, and connecting plate 703 provides buffering and rebound force during the reset of the flow limiting block 4, effectively mitigating the impact of mechanical action and making the catheter clamping process gentler. This improves patient comfort and extends the device's lifespan. The coordinated arrangement of the outer shell 901, transmission channel 905, diversion channel 904, round rod 902, and rubber sealing ring 903 further enhances the device's performance. This system achieves efficient gas transmission and diversion, ensuring that the gas pressure output by the pump 801 can uniformly drive the flow limiting mechanisms on both sides to operate synchronously. This improves the consistency of system response and the coordination of actions. Through the coordinated arrangement of the mounting groove 13, guide groove 10, and sliding block 802, a stable horizontal movement path is provided for the pump 801, allowing it to maintain linear movement during adjustment or opening and closing, avoiding deviation or jamming. This improves the smoothness of operation and the stability of the structure. Through the coordinated arrangement of the sliding block 802, damper 804, spring 805, and fixed seat 803, the pump 801 can automatically reset to the initial position after completing the gear adjustment action, and absorb vibration and impact during the reset process, thereby improving the automation level and safety of the device.

[0046] Example 3: This example is basically the same as the previous example, except that the inner cavity of the first docking cap tube 1203 is fitted with a guide tube 1202. One end of the guide tube 1202 is fixedly connected to one side of the adjacent outer shell 901, and the inner cavity of the guide tube 1202 is connected to the inner cavity of the transmission channel 905. The outer ring of the output tube 807 is adapted to the inner cavity of the large opening 1207. The outer ring of the output tube 807 is fitted with a limiting square ring 808, and one end of the limiting square ring 808 is attached to one end of the adjacent second docking cap tube 1208.

[0047] A connecting seat 1204 is fixedly connected to the bottom of the top plate 1, and one end of the movable rod 1205 passes through the side wall of the connecting seat 1204 and is fixedly connected to a limit pad 1206.

[0048] A handle 806 is fixedly connected to the side of the pump 801 away from the output pipe 807. An integrated microcontroller body 2 is fixedly connected to the top side of the top plate 1, and one end of the integrated microcontroller body 2 is connected to one end of the pump 801 through a wire. Specifically, the model of the integrated microcontroller body 2 is STM32F407ZGT6.

[0049] As can be seen from the above, through the setting of the adjusting mechanism 12 between the pressurizing mechanism 8 and the diversion mechanism 9, including the coordinated action of components such as the disc 1201, large opening 1207, small opening, docking cap tube one 1203, docking cap tube two 1208, guide tube 1202, output tube 807, and limiting square ring 808, users can select different gas flow channels according to different clinical needs, thereby achieving precise adjustment of the moving speed and force of the flow limiting block 4. This achieves the effect of adapting to various usage scenarios and meeting personalized treatment needs. Through the snap-fit ​​setting of docking cap tube one 1203 and guide tube 1202, and the connection relationship between guide tube 1202 and the outer shell 901 and transmission channel 905, a stable transmission path for gas is ensured when switching between different modes. To prevent gas leakage or pressure loss, the system's sealing performance and control accuracy are improved. The combination of the connecting seat 1204, movable rod 1205, and limiting gasket 1206 provides a reliable support and guiding structure for the disc 1201, ensuring stability during horizontal movement and rotation. This avoids adjustment errors caused by structural loosening, thus improving adjustment accuracy and operational reliability. The handle 806 and integrated microcontroller 2 allow medical personnel to manually adjust the gear position by pulling the handle 806. Simultaneously, the integrated microcontroller 2 collects real-time bladder pressure data and controls the start and stop of the suction pump 801, achieving a combination of human-machine interaction and intelligent control, thereby enhancing operational convenience and intelligence.

[0050] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for automatic switching of indwelling urinary catheters, comprising a top plate (1), characterized in that: A flow limiting block (4) is provided on the top of the top plate (1). A through slot (11) is provided on both sides of the top of the top plate (1). A reset mechanism (7) is horizontally provided in the inner cavity of the through slot (11). The reset mechanism (7) includes a connecting plate (703). A vertical plate (704) penetrating the adjacent through slot (11) is fixedly connected to one end of the connecting plate (703). A push plate (705) is fixedly connected to one side of the vertical plate (704). A diversion mechanism (9) is provided on one side of the bottom of the top plate (1), and the diversion mechanism (9) includes a housing (901). A diversion channel (904) is provided on one side of the outer wall of the housing (901), and a round rod (902) is slidably connected to the inner cavity of the diversion channel (904). One end of the round rod (902) is fixedly connected to one side of the adjacent push plate (705). A pressurizing mechanism (8) is provided on one side of the housing (901), and the pressurizing mechanism (8) includes a pump (801), and the output end of the pump (801) is fixedly connected to an output pipe (807).

2. The device for automatic switching of indwelling urinary catheters as described in claim 1, characterized in that: A bottom plate (3) is provided below the top plate (1). Connecting columns (5) are fixedly connected to the four corners of the bottom of the bottom plate (3). The top of the connecting columns (5) is fixedly connected to the bottom of the adjacent top plate (1). A urinary catheter is provided above the top plate (1). One end of the urinary catheter passes through the side wall of the top plate (1) and the side wall of the bottom plate (3) in sequence. A vertical tube (6) is fitted around the outer ring of the urinary catheter. One end of the vertical tube (6) is fixedly connected to the bottom of the top plate (1), and the other end of the vertical tube (6) is fixedly connected to the top of the bottom plate (3).

3. The device for automatic switching of indwelling urinary catheters as described in claim 1, characterized in that: A damper (701) is fixedly connected to one side of the inner wall of the through groove (11). One end of the damper (701) is fixedly connected to one side of the adjacent connecting plate (703). A spring (702) is sleeved on the outer ring of the damper (701). One end of the spring (702) is fixedly connected to the inner wall of the adjacent through groove (11), and the other end of the spring (702) is fixedly connected to one side of the adjacent connecting plate (703). The outer ring of the connecting plate (703) is adapted to the inner cavity of the adjacent through groove (11).

4. The device for automatic switching of indwelling urinary catheters as described in claim 1, characterized in that: The top of the outer shell (901) is fixedly connected to the bottom of the top plate (1). A transmission channel (905) is provided on one side of the outer shell (901). The inner cavities of the two diversion channels (904) are connected to the inner cavity of the transmission channel (905). A rubber sealing ring (903) is fixedly connected to one end of the round rod (902). The outer ring of the rubber sealing ring (903) is in contact with the inner wall of the adjacent diversion channel (904).

5. The device for automatic switching of indwelling urinary catheters as described in claim 1, characterized in that: The top plate (1) has an installation groove (13) on one side of its bottom, and a fixed seat (803) is slidably connected to the inner cavity of the installation groove (13). Guide grooves (10) are provided on both sides of the bottom of the top plate (1), and sliding blocks (802) that are compatible with the guide grooves (10) are fixedly connected to both sides of the top of the pump (801).

6. The device for automatic switching of an indwelling urinary catheter as described in claim 5, characterized in that: A second damper (804) is fixedly connected to one side of the sliding block (802), and one end of the second damper (804) is fixedly connected to the inner wall of the adjacent mounting groove (13). A second spring (805) is sleeved on the outer ring of the second damper (804). One end of the second spring (805) is fixedly connected to the inner wall of the adjacent mounting groove (13), and the other end of the second spring (805) is fixedly connected to one side of the adjacent fixed seat (803).

7. The device for automatic switching of indwelling urinary catheters as described in claim 1, characterized in that: A gear-adjusting mechanism (12) is horizontally arranged between the pressurizing mechanism (8) and the diverting mechanism (9). The gear-adjusting mechanism (12) includes a movable rod (1205). One end of the movable rod (1205) is fixedly connected to a disc (1201). A large opening (1207) and a small opening are respectively opened on both sides of the outer wall of one side of the disc (1201). The two ends of the disc (1201) are respectively fixedly connected to a first docking cap tube (1203) and a second docking cap tube (1208). The inner cavity of the first docking cap tube (1203) and the inner cavity of the second docking cap tube (1208) are both connected to the inner cavity of the small opening. The inner cavity of the second docking cap tube (1208) is connected to the inner cavity of the adjacent output tube (807).

8. The device for automatic switching of an indwelling urinary catheter as described in claim 7, characterized in that: The inner cavity of the first docking cap tube (1203) is fitted with a guide tube (1202). One end of the guide tube (1202) is fixedly connected to one side of the adjacent outer shell (901), and the inner cavity of the guide tube (1202) is connected to the inner cavity of the transmission channel (905). The outer ring of the output tube (807) is adapted to the inner cavity of the large opening (1207). The outer ring of the output tube (807) is fitted with a limiting square ring (808), and one end of the limiting square ring (808) is in contact with one end of the adjacent second docking cap tube (1208).

9. The device for automatic switching of an indwelling urinary catheter as described in claim 7, characterized in that: The bottom of the top plate (1) is fixedly connected to a connecting seat (1204), and one end of the movable rod (1205) passes through the side wall of the connecting seat (1204) and is fixedly connected to a limiting gasket (1206).

10. The device for automatic switching of an indwelling urinary catheter as described in claim 1, characterized in that: A handle (806) is fixedly connected to the side of the pump (801) away from the output pipe (807). An integrated microcontroller body (2) is fixedly connected to the top side of the top plate (1), and one end of the integrated microcontroller body (2) is connected to one end of the pump (801) through a wire.

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