A drainage tube

Abstract

The application provides a drainage tube, and relates to the technical field of medical devices.The drainage tube comprises a main pipe, the inside of the main pipe is provided with a first channel, the front end of the main pipe is provided with an extensible elastic part, the rear end of the main pipe is provided with an operating mechanism, the operating mechanism passes through the first channel and is connected to the front end of the main pipe, and is used for switching the elastic part between a natural state and an inflation state under the action of external force.The operating mechanism has three states.In the first state, the elastic part is in the natural state, and the first channel is open.In the second state, the elastic part is in the inflation state, and the first channel is closed.In the third state, the elastic part is in the inflation state, and the first channel is open.Through the setting of the operating mechanism, the operating mechanism makes the elastic part form a lantern-shaped structure and is fixed in the bladder, the operating mechanism controls the opening and closing of the first channel while keeping the elastic part in the inflation state, and then the independent, step-by-step and controllable adjustment of the shape of the elastic part and the opening and closing state of the first channel is realized, so that diversified clinical requirements are met.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a drainage tube. Background Technology

[0002] More than a century has passed since Frederick Foley invented the Foley catheter in the early 20th century. The Foley catheter revolutionized urinary tract care. It typically features a main drainage chamber and a separate balloon inflation chamber. In use, the catheter is inserted into the bladder, and fluid (such as saline) is injected into the distal balloon through the inflation chamber, causing the balloon to inflate and lock into place inside the bladder neck. However, the Foley catheter still had many shortcomings. Therefore, over the past century, numerous improvements have been made to the Foley catheter, including material improvements (silicone, latex, etc.), antibacterial coatings, self-lubricating catheters, and intermittent catheterization techniques.

[0003] However, existing urinary catheters cannot achieve coordinated and state-specific control of "fixation, sealing, and drainage." Their operating mechanisms mostly only achieve simple "two-state switching," namely, the initial passage state and the activated anchoring state. Specifically, existing designs cannot: 1) actively and reliably close the drainage channel in the anchoring state to achieve temporary sealing or irrigation retention; 2) reopen the drainage channel to restore continuous drainage without retracting the anchoring part or compromising the fixation effect. In other words, the operating mechanisms of existing mechanical urinary catheters lack the ability to independently and collaboratively control the two key variables of "anchoring morphology" and "channel closure," resulting in a single functional state that cannot meet the needs of refined and time-sequential management of fixation, sealing, and drainage in complex clinical scenarios. Summary of the Invention

[0004] The purpose of this application is to address the above problems by providing a drainage tube, comprising:

[0005] The main body has a first channel inside, and the front end of the main body has a stretchable elastic part;

[0006] An operating mechanism is provided at the rear end of the main tube and passes through the first channel to connect to the front end of the main tube. The operating mechanism is used to switch the elastic part between a natural state and an expanded state under the action of external force. The expanded state is that the two ends of the elastic part move closer to each other along the axial direction of the main tube under the action of external force and deform along the radial direction of the main tube to form a lantern-shaped structure, so as to increase the maximum diameter of the elastic part.

[0007] The operating mechanism has a first state, a second state, and a third state. When it is in the first state, the elastic part is in the natural state and the first channel is open. When it is in the second state, the elastic part is in the expanded state and the first channel is closed. When it is in the third state, the elastic part is in the expanded state and the first channel is open.

[0008] According to the technical solutions provided in certain embodiments of this application, the operating mechanism includes:

[0009] An operating lever, which is hollow and located at the rear end of the main tube, has a first through hole communicating with the first channel. A first output port is located at the end of the operating lever furthest from the main tube, and the first output port communicates with the first channel through the interior of the operating lever. The operating lever is connected to the front end of the main tube and is used to switch the elastic part between its natural state and its expanded state under external force.

[0010] A control structure, located on the operating lever, is used to control the connection and disconnection between the first channel and the first output port.

[0011] According to the technical solutions provided in certain embodiments of this application, the first channel has a first cavity, a second cavity, and a third cavity, wherein the inner diameter of the second cavity is smaller than the inner diameters of the first cavity and the third cavity;

[0012] The control structure includes an annular protrusion, which is disposed on the operating lever;

[0013] When the operating lever is in the first position, the annular protrusion is located in the first cavity, the elastic part is in the natural state, and the first cavity, second cavity, and third cavity are connected to allow the first channel to communicate with the first output port. When the operating lever is in the second position, the annular protrusion is located in the second cavity, the elastic part is in the expanded state, and the annular protrusion blocks the second cavity to disconnect the first channel from the first output port. When the operating lever is in the third position, the annular protrusion is located in the third cavity, the elastic part is in the expanded state, and the first cavity, second cavity, and third cavity are connected to allow the first channel to communicate with the first output port.

[0014] According to the technical solutions provided in certain embodiments of this application, the control structure includes a first control member, which is movably connected to the operating rod along the axial direction of the operating rod. The first control member has a first closed end, which is used to seal the interior of the operating rod. When the first control member is in a fourth position, the first channel is connected to the first output port. When the first control member is in a fifth position, the first closed end seals the interior of the operating rod.

[0015] According to certain embodiments of the present application, the control structure includes a second control member, which is movably connected to the operating rod radially along the operating rod. The second control member has a conductive cavity inside. When the second control member is in the sixth position, the conductive cavity connects the first channel and the first output port. When the second control member is in the seventh position, the second control member blocks the interior of the operating rod.

[0016] According to the technical solutions provided in certain embodiments of this application, the main tube also has a second channel inside, the second channel is not connected to the first channel, the second channel is located at the front end of the main tube and has a first injection hole; the main tube is provided with a first injection tube, the interior of the first injection tube is connected to the first injection hole through the second channel.

[0017] According to the technical solutions provided in certain embodiments of this application, the operating mechanism has a third channel inside, the third channel is not connected to the first channel, and the third channel is provided with a second injection hole at the front end of the main tube; the operating mechanism is provided with a second injection tube, and the interior of the second injection tube is connected to the second injection hole through the third channel.

[0018] According to the technical solutions provided in certain embodiments of this application, the operating rod is slidably connected to the rear end of the main tube, a first limiting protrusion is provided on the inner wall of the third cavity, and a first limiting groove, a second limiting groove and a third limiting groove are provided on the outer wall of the operating rod along its axial direction.

[0019] When the first limiting protrusion engages with the first limiting groove, the elastic part is in its natural state, and the first channel and the first output port are connected.

[0020] When the first limiting protrusion engages with the second limiting groove, the elastic part is in the expanded state, and the annular protrusion blocks the second cavity;

[0021] When the first limiting protrusion engages with the third limiting groove, the elastic part is in the expanded state, and the first channel and the first output port are connected.

[0022] According to the technical solutions provided in some embodiments of this application, the operating rod is slidably connected to the rear end of the main tube, a second limiting protrusion is provided on the inner wall of the rear end of the main tube, and a fourth limiting groove and a fifth limiting groove are provided on the outer wall of the operating rod along its axial direction.

[0023] When the second limiting protrusion engages with the fourth limiting groove, the elastic part is in its natural state.

[0024] When the second limiting protrusion engages with the fifth limiting groove, the elastic part is in the expanded state.

[0025] According to the technical solutions provided in some embodiments of this application, an adapter hose is connected to the first output port, and the adapter hose is used to connect to the urine collection bag.

[0026] Compared with the prior art, the beneficial effects of this application are as follows: This application provides a drainage tube, including a main tube with a first channel inside. The front end of the main tube has a stretchable elastic part, and the rear end of the main tube is provided with an operating mechanism. The operating mechanism passes through the first channel and connects to the front end of the main tube. It is used to switch the elastic part between a natural state and an expanded state under the action of external force. In the expanded state, the two ends of the elastic part move closer to each other along the axial direction of the main tube under the action of external force and deform along the radial direction of the main tube to form a lantern-shaped structure, thereby increasing the maximum diameter of the elastic part. The operating mechanism has a first state, a second state, and a third state. When it is in the first state, the elastic part is in the natural state and the first channel is open. When it is in the second state, the elastic part is in the expanded state and the first channel is closed. When it is in the third state, the elastic part is in the expanded state and the first channel is open.

[0027] By setting an operating mechanism at the rear end of the tube, the operating mechanism can expand the elastic part to form a lantern-shaped structure, thereby fixing the front end of the tube in the bladder. While keeping the elastic part in an expanded state, the operating mechanism controls the opening and closing of the first channel, thereby achieving independent, step-by-step, and controllable adjustment of the shape of the elastic part and the opening and closing state of the first channel, thus meeting diverse clinical needs such as reliable fixation, leak-proof sealing, smooth drainage, and the ability to be interrupted as needed.

[0028] By using a lantern-shaped structure formed by the elastic part for fixation, compared with the traditional balloon fixation method, the elastic part is softer than the balloon after being inflated by fluid, and is less likely to damage the bladder and urethra. The lantern-shaped structure does not have a blocking effect, avoiding the presence of residual urine in the bladder due to balloon obstruction, and ensuring that urine can be completely drained during drainage.

[0029] Only the first channel needs to be set up inside the main tube for urine drainage, without the need for an additional filling channel for filling / draining operations, which simplifies the operation steps during use. At the same time, the diameter of the main tube is optimized, which effectively reduces the risk of friction and damage to the urethra during insertion / removal.

[0030] By setting up an operating mechanism to control the opening and closing of the first channel, the first channel is periodically closed during use to keep the bladder adequately filled with urine for stimulation, thereby effectively maintaining the bladder's ability to sense urination and its contractile function.

[0031] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a drainage tube provided in an embodiment of this application;

[0034] Figure 2 A cross-sectional view of a drainage tube control structure provided in this application embodiment when the first structural form is adopted;

[0035] Figure 3 A cross-sectional view of a drainage tube control structure provided in an embodiment of this application, which adopts a first structural form and is provided with a second channel;

[0036] Figure 4 A cross-sectional view of a drainage tube control structure provided in an embodiment of this application, which adopts a first structural form and is provided with a third channel;

[0037] Figure 5 A schematic diagram of the operating lever when the control structure of a drainage tube provided in this application adopts the first structural form;

[0038] Figure 6A cross-sectional view of a drainage tube control structure provided in this application embodiment when the second structural form is adopted;

[0039] Figure 7 A cross-sectional view of a drainage tube control structure provided in this application embodiment when it adopts a second structural form and is provided with a second channel;

[0040] Figure 8 A cross-sectional view of a drainage tube control structure provided in an embodiment of this application, which adopts a second structural form and is provided with a third channel;

[0041] Figure 9 A schematic diagram of the operating lever when the control structure of a drainage tube provided in this application adopts the second structural form;

[0042] Figure 10 Another cross-sectional view of the control structure of a drainage tube provided in this application embodiment when it adopts a second structural form;

[0043] Figure 11 Another cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a second structural form and is provided with a second channel;

[0044] Figure 12 Another cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a second structural form and is provided with a third channel;

[0045] Figure 13 Another schematic diagram of the operating lever when the control structure of a drainage tube provided in the embodiments of this application adopts the second structural form;

[0046] Figure 14 A cross-sectional view of a drainage tube control structure provided in this application embodiment when it adopts a third structural form;

[0047] Figure 15 A cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a third structural form and is provided with a second channel;

[0048] Figure 16 A cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a third structural form and is provided with a third channel;

[0049] Figure 17 Another cross-sectional view of a drainage tube control structure provided in this application embodiment when a third structural form is adopted;

[0050] Figure 18 Another cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a third structural form and is provided with a second channel;

[0051] Figure 19 Another cross-sectional view of a drainage tube control structure provided in this application embodiment, which adopts a third structural form and is provided with a third channel;

[0052] Figure 20 This is a schematic diagram of the operating lever when the control structure of a drainage tube provided in this application adopts a third structural form.

[0053] The text labels in the image represent:

[0054] 1. Main tube; 2. Operating mechanism; 3. First injection tube; 4. Second injection tube; 5. Adapter hose; 11. Main body; 12. Connecting part; 13. Adapter hose; 21. Operating lever; 22. Annular protrusion; 23. First control component; 24. Second control component; 25. Traction component; 26. End cap; 31. First sealing plug; 41. Second sealing plug; 101. First channel; 102. Second channel; 111. Elastic part; 121. First cavity; 122. Second limiting protrusion ; 131, Second cavity; 132, First limiting protrusion; 201, First through hole; 202, First output port; 203, Second through hole; 204, Second output port; 211, First limiting groove; 212, Second limiting groove; 213, Third limiting groove; 214, Fourth limiting groove; 215, Fifth limiting groove; 216, Sixth limiting groove; 217, Seventh limiting groove; 231, First closed end; 232, Third limiting protrusion; 241, Conducting cavity; 251, Third channel. Detailed Implementation

[0055] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this application.

[0056] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0057] As mentioned in the background section, in order to solve the problems existing in the prior art, this embodiment provides a drainage tube, including:

[0058] The main tube 1 has a first channel 101 inside, and the front end of the main tube 1 has a plurality of stretchable elastic parts 111.

[0059] Operating mechanism 2 is located at the rear end of the main pipe 1 and passes through the first channel 101 to connect to the front end of the main pipe 1. Operating mechanism 2 is used to switch the elastic part 111 between the natural state and the expanded state under the action of external force. In the expanded state, the two ends of the elastic part 111 approach each other along the axial direction of the main pipe 1 under the action of external force and deform along the radial direction of the main pipe 1 to form a lantern-shaped structure, so as to increase the maximum diameter of the elastic part 111.

[0060] The operating mechanism 2 has a first state, a second state, and a third state. When it is in the first state, the elastic part 111 is in a natural state and the first channel 101 is open. When it is in the second state, the elastic part 111 is in an expanded state and the first channel 101 is closed. When it is in the third state, the elastic part 111 is in an expanded state and the first channel 101 is open.

[0061] like Figure 1-20As shown, the main pipe 1 is made of flexible materials such as polyvinyl chloride, latex, or silicone. The front end of the main pipe 1 is used for insertion into the urethra and bladder, while the rear end of the main pipe 1 is the outlet for urine. The front end of the main pipe 1 has multiple strip-shaped holes extending along the length of the main pipe 1. The locations of the strip-shaped holes on the main pipe 1 form elastic parts 111. The operating mechanism 2 is located at the rear end of the main pipe 1. The operating mechanism 2 passes through the first channel 101 and is connected to an end cap 26. The end cap 26 is located at the front end of the main pipe 1 and is integrally formed with the main pipe 1 or abuts against the main pipe 1. At the outside of the port of tube 1, by pulling the end cap 26, the end cap 26 pushes the elastic part 111, causing the two ends of the elastic part 111 to come closer to each other and generate elastic deformation along the radial direction of the main tube 1, thereby forming a lantern-shaped structure. The maximum diameter of the lantern-shaped structure is larger than the diameter of the main tube 1, which can be snapped into the bladder to produce an anchoring effect. The urine in the bladder enters the first channel 101 through the strip hole and can be discharged from the rear end of the main tube 1. At the same time, the operating mechanism 2 can control the opening and closing of the first channel 101 to realize the control of urine drainage.

[0062] Initially, the elastic part 111 is in a natural state without external force, and the elastic part 111 is straight. The main tube 1 is inserted into the urethra. When the front end of the main tube 1 enters the bladder, the urine in the bladder can enter the first channel 101 through the strip hole and be discharged from the rear end of the main tube 1. When the operator observes that urine is being discharged from the rear end of the main tube 1, it can be determined that the front end of the main tube 1 has entered the bladder. At this time, the end cap 26 can be pulled by the operating mechanism 2 to make the elastic part 111 form a lantern-shaped structure, thereby anchoring the front end of the main tube 1 in the bladder. While keeping the elastic part 111 in an expanded state, the opening and closing of the first channel 101 is controlled by the operating mechanism 2. When the user feels the urge to urinate, the first channel 101 is opened by the operating mechanism 2, and the urine can be discharged from the rear end of the main tube 1 through the first channel 101. When the urine is discharged or there is no need to urinate, the first channel 101 is closed by the operating mechanism 2 to stop the discharge of urine.

[0063] By setting an operating mechanism 2 at the rear end of the main tube 1, the operating mechanism 2 can unfold the elastic part 111 to form a lantern-shaped structure, thereby fixing the front end of the main tube 1 in the bladder. While keeping the elastic part 111 in an expanded state, the operating mechanism 2 controls the opening and closing of the first channel 101, thereby realizing independent, step-by-step, and controllable adjustment of the shape of the elastic part 111 and the opening and closing state of the first channel 101, thus meeting diverse clinical needs such as reliable fixation, leak-proof sealing, smooth drainage, and the ability to be interrupted as needed.

[0064] The lantern-shaped structure formed by the elastic part 111 is used for fixation. Compared with the traditional balloon fixation method, the elastic part 111 is softer than the balloon after it is inflated by water, and is less likely to damage the bladder and urethra. The lantern-shaped structure does not have a blocking effect, so as to avoid the presence of residual urine in the bladder due to the balloon obstruction and ensure that the urine can be completely drained during drainage.

[0065] Only the first channel 101 needs to be set in the main tube 1 for urine drainage, without the need to set up an additional filling channel for filling / draining operations, which simplifies the operation steps during use. At the same time, the diameter of the main tube 1 is optimized, which effectively reduces the risk of friction and damage to the urethra during insertion.

[0066] By setting the operating mechanism 2 to control the opening and closing of the first channel 101, the first channel 101 is periodically closed during use to keep the bladder filled with appropriate urine for stimulation, thereby effectively maintaining the bladder's ability to sense urination and its contraction function.

[0067] In a preferred embodiment, the operating mechanism 2 includes:

[0068] The operating lever 21 is a hollow structure and is located at the rear end of the main pipe 1. The operating lever 21 has a first through hole 201 that connects to the first channel 101. The end of the operating lever 21 away from the main pipe 1 has a first output port 202, which connects to the first channel 101 through the interior of the operating lever 21. The operating lever 21 is connected to the front end of the main pipe 1 and is used to switch the elastic part 111 between a natural state and an expanded state under the action of external force.

[0069] The control structure is located on the operating lever 21 and is used to control the connection and disconnection between the first channel 101 and the first output port 202.

[0070] like Figure 2 As shown, the main pipe 1 includes an integrally connected main body 11 and a connecting part 12. The connecting part 12 is located at the rear end of the main pipe 1. The operating rod 21 is coaxially arranged with the main pipe 1 and slidably connected to the connecting part 12 along the axial direction of the main pipe 1. The operating rod 21 and the connecting part 12 are sealed together. A traction member 25 is fixedly connected to the front end of the operating rod 21. The traction member 25 passes through the first channel 101 and is fixedly connected to the end cap 26 at the other end. The operating rod 21 is provided with a plurality of first through holes 201. The first channel 101 communicates with the interior of the operating rod 21 through the first through holes 201, so that urine can enter the interior of the operating rod 21 through the first through holes 201 from the first channel 101 and be discharged from the first output port 202. The control structure is provided on the operating rod 21 and can control the opening and closing between the first channel 101 and the first output port 202, thereby controlling the urine drainage.

[0071] Furthermore, the main pipe 1 is also provided with an injection channel for cleaning injection, and the injection channel can have different structural forms.

[0072] like Figure 3 As shown, the injection channel adopts the first structural form, wherein:

[0073] The main tube 1 also has a second channel 102 inside. The second channel 102 is not connected to the first channel 101. The second channel 102 is located at the front end of the main tube 1 and has a first injection hole.

[0074] The main tube 1 is provided with a first injection tube 3, and the interior of the first injection tube 3 is connected to the first injection hole through the second channel 102.

[0075] Specifically, the second channel 102 is formed on the side wall of the main pipe 1 and extends from the front end to the rear end of the main pipe 1. The first injection hole is located at the front end of the main pipe 1 and connects to the second channel 102. The end cap 26 has a third injection hole corresponding to the first injection hole. The main body 11 of the main pipe 1 has a first injection tube 3 integrally formed near the connecting part 12. The interior of the first injection tube 3, the second channel 102, and the third injection hole are sequentially connected. A first sealing plug 31 is movably connected to the first injection tube 3. The first sealing plug 31 is used to seal the free end of the first injection tube 3. By setting a second channel 102 independent of the first channel 101 on the main pipe 1, the second channel 102 can be used to... 2. A medium such as saline or medication is injected into the bladder to achieve the purpose of administering medication or rinsing the bladder. At the same time, the first injection tube 3 and the second channel 102 are located on the main body 11 of the main tube 1 and are independent of the operating mechanism 2 at the rear end of the main tube 1 to avoid mutual interference. It should be noted that the position of the second channel 102 is not limited to the inner wall of the main tube 1. The second channel 102 described above is only one of the structural forms formed on the main tube 1. In other embodiments of this application, the second channel 102 can also be formed in other positions on the main tube 1, such as forming a cavity independent of the first channel 101 to form the second channel 102 in the first channel 101. No special limitation is made here.

[0076] like Figure 4 As shown, the injection channel adopts the second structural form, wherein:

[0077] The operating mechanism 2 has a third channel 251 inside. The third channel 251 is not connected to the first channel 101. The third channel 251 is located at the front end of the main tube 1 and has a second injection hole.

[0078] The operating mechanism 2 is provided with a second injection tube 4, and the interior of the second injection tube 4 is connected to the second injection hole through a third channel 251;

[0079] Specifically, the traction member 25 has a third channel 251 inside, and a second injection hole connected to the third channel 251 at the front end of the traction member 25. A fourth injection hole is provided on the end cap 26 corresponding to the second injection hole. The rear end of the traction member 25 extends from the front end of the main tube 1 into the interior of the operating rod 21 and is integrally formed with a second injection tube 4 through the operating rod 21. The traction member 25 is fixed to the operating rod 21. The interior of the second injection tube 4, the third channel 251 and the fourth injection hole are connected in sequence. A second sealing plug 41 is movably connected to the second injection tube 4. The second sealing plug 41 is used to seal the free end of the second injection tube 4. By setting the third channel 251 inside the traction member 25, physiological saline or drug solution can be injected into the bladder through the third channel 251, thereby achieving the purpose of drug administration or irrigation treatment in the bladder.

[0080] Control structures can have different structural forms.

[0081] like Figure 2-5 As shown, the control structure adopts the first structural form, wherein:

[0082] The first channel 101 has a first cavity 121, a second cavity 131 and a third cavity, and the inner diameter of the second cavity 131 is smaller than the inner diameters of the first cavity 121 and the third cavity.

[0083] The control structure includes an annular protrusion 22, which is disposed on the operating lever 21;

[0084] When the operating lever 21 is in the first position, the annular protrusion 22 is located inside the first cavity 121, the elastic part 111 is in a natural state, and the first cavity 121, the second cavity 131, and the third cavity are connected to allow the first channel 101 to be connected to the first output port 202. When the operating lever 21 is in the second position, the annular protrusion 22 is located inside the second cavity 131, the elastic part 111 is in an expanded state, and the annular protrusion 22 blocks the second cavity 131 to disconnect the connection between the first channel 101 and the first output port 202. When the operating lever 21 is in the third position, the annular protrusion 22 is located inside the third cavity, the elastic part 111 is in an expanded state, and the first cavity 121, the second cavity 131, and the third cavity are connected to allow the first channel 101 to be connected to the first output port 202.

[0085] Specifically, an adapter pipe 13 is inserted and fixed to the connecting part 12. The adapter pipe 13 includes an integrally connected first section and a second section. The first section is located inside the connecting part 12. The connecting part 12 has a first cavity 121 inside, the first section has a second cavity 131 inside, and the second section has a third cavity inside. The first cavity 121, the second cavity 131, and the third cavity are sequentially connected along the axial direction of the main pipe 1 from the front end to the rear end of the main pipe 1. The operating rod 21 is slidably inserted into the third cavity and is sealed to the second section. A first through hole 201 is located on the operating rod 21. The number of first through holes 201 and their specific positions on the operating rod 21 are not limited. The connection between the first channel 101 and the inside of the operating rod 21 is sufficient. The annular protrusion 22 is formed on the outer periphery of the operating rod 21 and is located on the side of the first through hole 201 near the front end of the main tube 1. Initially, the operating rod 21 is in the first position, and the annular protrusion 22 is located in the first cavity 121 of the connecting part 12. At this time, the elastic part 111 is in its natural state. The first channel 101 connects to the inside of the operating rod 21 through the first through hole 201. The main tube 1 is inserted into the urethra. When the operator observes urine being discharged from the first outlet 202, it can be determined that the front end of the main tube 1 has entered the bladder. At this time, the operating rod 1 is pulled along its axis away from the front end of the main tube 1. The operating lever 21 slides relative to the adapter pipe 13 and pulls the end cap 26 via the traction member 25, causing multiple elastic parts 111 to elastically deform. When the operating lever 21 moves to the second position, the elastic parts 111 unfold to form a lantern-shaped structure, the front end of the main pipe 1 is anchored in the bladder, and the annular protrusion 22 moves into the second cavity 131 and seals the second cavity 131, disconnecting the connection between the first channel 101 and the first output port 202, and urine no longer flows out of the first output port 202. When urination is required, the operating lever 21 is pulled further away from the front end of the main pipe 1 along the axis of the main pipe 1 from the second position. The operating lever 21 is pulled by the traction member... 25 drives the end cap 26 to further deform the elastic part 111, but the multiple elastic parts 111 as a whole still maintain the lantern-shaped structure, so that the front end of the main tube 1 is anchored to the bladder. When the operating rod 21 moves to the third position, the annular protrusion 22 moves into the third cavity, and the first channel 101 is connected to the inside of the operating rod 21 through the first through hole 201, and urine can be discharged from the first output port 202. By pushing and pulling the operating rod 21 to switch between the second position and the third position, the connection and disconnection between the first channel 101 and the first output port 202 can be controlled while keeping the front end of the main tube 1 anchored to the bladder, thereby realizing the control of the drainage of urine.

[0086] Furthermore, the inner wall of the third cavity is provided with a first limiting protrusion 132, and the outer wall of the operating rod 21 is provided with a first limiting groove 211, a second limiting groove 212 and a third limiting groove 213 along its axial direction;

[0087] When the first limiting protrusion 132 engages with the first limiting groove 211, the elastic part 111 is in a natural state, and the first channel 101 and the first output port 202 are connected.

[0088] When the first limiting protrusion 132 engages with the second limiting groove 212, the elastic part 111 is in an expanded state, and the annular protrusion 22 blocks the second cavity 131.

[0089] When the first limiting protrusion 132 and the third limiting groove 213 are engaged, the elastic part 111 is in an expanded state, and the first channel 101 and the first output port 202 are connected.

[0090] For details, please refer to Figure 2-5 The inner wall of the third cavity is provided with an annular first limiting protrusion 132. The outer wall of the operating lever 21 is provided with an annular first limiting groove 211, a second limiting groove 212, and a third limiting groove 213 sequentially along its axial direction from the rear end of the main pipe 1 to the front end of the main pipe 1. The first limiting groove 211, the second limiting groove 212, and the third limiting groove 213 are respectively adapted to the first limiting protrusion 132. When the first limiting groove 211 engages with the first limiting protrusion 132, the operating lever 21 is in the aforementioned first position, at which time the elastic part 111 is in its natural state, and the first channel 101 is connected to the first output port 202 through the first through hole 201. When the second limiting groove 212 engages with the first limiting protrusion 132, the operating lever 21 is in the aforementioned second position, at which time the elastic part 111 unfolds to form a lantern-shaped structure, and the annular protrusion 22 blocks the first... Channel 101 is connected to the first output port 202; when the third limiting groove 213 cooperates with the first limiting protrusion 132, the operating rod 21 is in the third position mentioned above. At this time, the multiple elastic parts 111 still form a lantern-shaped structure. The first channel 101 is connected to the first output port 202 through the first through hole 201. By setting the first limiting protrusion 132 on the inner wall of the third cavity, and setting the corresponding first limiting groove 211, second limiting groove 212 and third limiting groove 213 on the outer wall of the operating rod 21, the position of the operating rod 21 can be limited, avoiding changes in the position of the operating rod 21 due to misoperation. When the operator pulls the operating rod 21, the position of the operating rod 21 can be determined by the feedback generated when the first limiting protrusion 132 cooperates with the three limiting grooves, which effectively reduces the difficulty of operation and can be widely popularized and applied.

[0091] Optionally, the connecting part 12 has a first cavity 121 inside, and the adapter pipe 13 includes a first section and a second section integrally connected. The first section has a third cavity inside, and the second section has a second cavity 131 inside. The first cavity 121, the third cavity and the second cavity 131 are sequentially connected from the front end to the rear end of the main pipe 1 along the axial direction of the main pipe 1. The operating rod 21 is slidably inserted into the second cavity 131 and is sealed to the second section. Correspondingly, the inner wall of the second cavity 131 is provided with an annular first limiting protrusion 132, which can cooperate with the first limiting groove 211, the second limiting groove 212 and the third limiting groove 213 on the outer wall of the operating rod 21 respectively. The rest of the structure is the same as in the first structure above, and will not be described again here.

[0092] Initially, the operating lever 21 is in the first position, the first limiting groove 211 engages with the first limiting protrusion 132, and the annular protrusion 22 is located in the first cavity 121 of the connecting part 12. At this time, the elastic part 111 is in its natural state, and the first channel 101 connects to the interior of the operating lever 21 through the first through hole 201. The main tube 1 is inserted into the urethra. When the operator observes urine being discharged from the first outlet 202, it can be determined that the front end of the main tube 1 has entered the bladder. At this time, the operating lever 21 is pulled along the axis of the main tube 1 away from the front end of the main tube 1. The operating lever 21 slides relative to the adapter tube 13 and pulls the end cap 26 through the traction member 25, causing the elastic part 111 to undergo elastic deformation. When the operating lever 21 moves to the third position, the second limiting groove 212 engages with the first limiting protrusion 132, the elastic part 111 unfolds to form a lantern-shaped structure, the front end of the main tube 1 is anchored in the bladder, and the annular protrusion 22 moves to the third cavity. Inside, the first channel 101 remains connected to the first output port 202; the operating rod 21 is pulled further away from the front end of the main pipe 1 along the axis of the main pipe 1. The operating rod 21 drives the end cap 26 through the traction member 25, causing the elastic part 111 to deform further. However, the elastic part 111 as a whole still maintains a lantern-shaped structure, keeping the front end of the main pipe 1 anchored to the bladder. When the operating rod 21 moves to the second position, the third limiting groove 213 cooperates with the first limiting protrusion 132, and the annular protrusion 22 moves into the second cavity 131 and blocks the second cavity 131. The connection between the first channel 101 and the first output port 202 is disconnected, and urine no longer flows out of the first output port 202. By pushing and pulling the operating rod 21, it can be switched between the second and third positions. Under the premise of keeping the front end of the main pipe 1 anchored to the bladder, the connection between the first channel 101 and the first output port 202 can be controlled, thereby realizing the control of the drainage of urine.

[0093] Furthermore, an adapter hose 5 is connected to the first output port 202, which is used to connect to the urine collection bag.

[0094] like Figure 6-13As shown, the control structure adopts the second structural form, in which:

[0095] The operating lever 21 is slidably connected to the rear end of the main pipe 1. The inner wall of the rear end of the main pipe 1 is provided with a second limiting protrusion 122. The outer wall of the operating lever 21 is provided with a fourth limiting groove 214 and a fifth limiting groove 215 along its axial direction.

[0096] When the second limiting protrusion 122 engages with the fourth limiting groove 214, the elastic part 111 is in a natural state.

[0097] When the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 is in an expanded state.

[0098] For details, please refer to Figure 6-13 The operating lever 21 is slidably inserted into the connecting part 12 and is sealed to the connecting part 12. The first channel 101 also connects to the interior of the operating lever 21 through the first through hole 201. The inner wall of the connecting part 12 is provided with an annular second limiting protrusion 122. The outer wall of the operating lever 21 is provided with an annular fourth limiting groove 214 and a fifth limiting groove 215 along its axial direction from the rear end side of the main pipe 1 to the front end side of the main pipe 1. The fourth limiting groove 214 and the fifth limiting groove 215 are respectively adapted to the second limiting protrusion 122. When the fourth limiting groove 214 cooperates with the second limiting protrusion 122, the elastic part 111 is in a natural state. When the fifth limiting groove 215 engages with the second limiting protrusion 122, the elastic part 111 unfolds to form a lantern-shaped structure. By providing the second limiting protrusion 122 on the inner wall of the connecting part 12, and providing corresponding fourth limiting grooves 214 and fifth limiting grooves 215 on the outer wall of the operating rod 21, the position of the operating rod 21 can be limited, preventing changes in the position of the operating rod 21 due to misoperation. When the operator pulls the operating rod 21, the position of the operating rod 21 can be determined by the feedback generated when the second limiting protrusion 122 engages with the two limiting grooves, effectively reducing the difficulty of operation and enabling widespread popularization and application.

[0099] Furthermore, the control structure includes a first control element 23, which is movably connected to the operating lever 21 along the axial direction of the operating lever 21. The first control element 23 has a first closed end 231, which is used to seal the interior of the operating lever 21. When the first control element 23 is in the fourth position, the first channel 101 and the first output port 202 are connected. When the first control element 23 is in the fifth position, the first closed end 231 seals the interior of the operating lever 21.

[0100] Alternatively, please refer to Figure 6-9The operating lever 21 includes an integrally connected third and fourth sections. The inner diameter of the third section is smaller than that of the fourth section. The outer wall of the fourth section has annular sixth limiting groove 216 and seventh limiting groove 217 sequentially arranged along its axial direction from the front end of the main pipe 1 to the rear end. The first control member 23 is coaxially arranged with the operating lever 21, and its front end is slidably inserted into the operating lever 21. The inner wall of the first control member 23 has annular third limiting protrusion 232, which is adapted to the sixth limiting groove 216 and seventh limiting groove 217. The first control member 23 can slide relative to the operating lever 21 along the axial direction of the main pipe 1 and is sealed to the fourth section. The first control member 23 has a hollow structure; its end away from the operating lever 21 has a second output port 204, and its end near the operating lever 21 has a first closed end 231, which allows the third section to disconnect from the fourth section. The component 23 is provided with several second through holes 203. The second through holes 203 are located on the side of the first closed end 231 away from the front end of the main pipe 1. The inside of the operating rod 21 is connected to the inside of the first control component 23 through the second through holes 203. Urine can enter the inside of the operating rod 21 through the first through holes 201 from the first channel 101, and then enter the inside of the first control component 23 through the second through holes 203 from the inside of the operating rod 21, and finally be discharged from the second output port 204. Furthermore, the first closed end 231 can also be formed on the operating rod 21. The first closed end 231 can block the inside of the first control component 23. The second through holes 203 are provided on the side of the first closed end 231 close to the front end of the main pipe 1, which can achieve the same effect as the above, that is, the first closed end 231 disconnects the first channel 101 and the second output port 204, and the first channel 101 can be connected to the second output port 204 through the second through holes 203.

[0101] Initially, the second limiting protrusion 122 engages with the fourth limiting groove 214, the elastic part 111 is in its natural state, and the first control member 23 is in the fourth position. At this time, the third limiting protrusion 232 engages with the seventh limiting groove 217, the first closed end 231 is located inside the fourth section, and the first channel 101 is connected to the second output port 204. When the main tube 1 is inserted into the urethra, and the operator observes urine being discharged from the second output port 204, it can be determined that the tip of the main tube 1 has entered the bladder. At this time, the operating lever 21 is pulled away from the tip of the main tube 1. The operating lever 21 is relative to the side away from the tip of the main tube 1. The main pipe 1 slides, and the end cap 26 is pulled by the traction member 25, causing the elastic part 111 to undergo elastic deformation. When the operating rod 21 moves to the point where the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 unfolds to form a lantern-shaped structure, and the front end of the main pipe 1 is anchored in the bladder. Then, the first control member 23 is pushed along the axis of the main pipe 1 to move it to the fifth position. At this time, the third limiting protrusion 232 engages with the sixth limiting groove 216, and the first sealing end 231 seals the interior of the third section, so urine no longer flows out from the second outlet 204. When urination is required, in the fifth position... Based on this, the first control member 23 is pulled along the axis of the main pipe 1 away from the front end of the main pipe 1. When the first control member 23 reaches the fourth position, the third limiting protrusion 232 cooperates with the seventh limiting groove 217, the first closed end 231 is located inside the fourth section, the first channel 101 is connected to the second output port 204, and urine can be discharged from the second output port 204. By pushing and pulling the first control member 23 to switch between the fourth position and the fifth position, the connection between the first channel 101 and the second output port 204 can be controlled while keeping the front end of the main pipe 1 anchored to the bladder. This allows for control of the drained urine. By setting a third limiting protrusion 232 on the inner wall of the first control member 23, and setting corresponding sixth limiting grooves 216 and seventh limiting grooves 217 on the outer wall of the operating rod 21, the position of the first control member 23 can be limited, preventing changes in the position of the first control member 23 due to misoperation. When the operator pulls the first control member 23, the position of the first control member 23 can be determined by the feedback generated when the third limiting protrusion 232 cooperates with the two limiting grooves, effectively reducing the difficulty of operation and enabling widespread popularization and application.

[0102] Alternatively, please refer to Figure 10-13 The inner wall of the first control component 23 is formed with an internal thread, and the outer wall of the fourth section is formed with an external thread. The first control component 23 is threaded along the axial direction of the main pipe 1 to the operating rod 21 and is sealed to the fourth section. The remaining structures of the first control component 23 and the operating rod 21 are the same as those in the second structural form described above, and will not be described again here.

[0103] Initially, the second limiting protrusion 122 engages with the fourth limiting groove 214, the elastic part 111 is in its natural state, the first control member 23 is in the fourth position, the first closed end 231 is located inside the fourth segment, and the first channel 101 is connected to the second output port 204. When the main tube 1 is inserted into the urethra, and the operator observes urine discharge from the second output port 204, it can be determined that the tip of the main tube 1 has entered the bladder. At this time, the operating rod 21 is pulled away from the tip of the main tube 1, causing the operating rod 21 to slide relative to the main tube 1 and pull the end cap 26 through the traction member 25, causing the elastic part 111 to undergo elastic deformation. When the operating rod 21 moves to the point where the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 unfolds to form a lantern-shaped structure, and the tip of the main tube 1 is anchored inside the bladder, then around the first control... The first control member 23 is rotated along the central axis of the first control member 23 to move it to the fifth position. The first closed end 231 blocks the interior of the third section, and urine no longer flows out from the second output port 204. When urination is required, the first control member 23 is rotated around the central axis of the first control member 23 from the fifth position, so that it moves away from the front end of the main pipe 1. When the first control member 23 reaches the fourth position, the first closed end 231 is located inside the fourth section, and the first channel 101 is connected to the second output port 204, so that urine can be discharged from the second output port 204. By rotating the first control member 23 to switch between the fourth and fifth positions, the connection between the first channel 101 and the second output port 204 can be controlled while keeping the front end of the main pipe 1 anchored to the bladder, thereby achieving control of the drainage of urine.

[0104] Furthermore, an adapter hose 5 is connected to the second outlet 204, which is used to connect to the urine collection bag.

[0105] like Figure 14-20 As shown, the control structure adopts the third structural form, in which:

[0106] The operating lever 21 is slidably connected to the rear end of the main pipe 1. The inner wall of the rear end of the main pipe 1 is provided with a second limiting protrusion 122. The outer wall of the operating lever 21 is provided with a fourth limiting groove 214 and a fifth limiting groove 215 along its axial direction.

[0107] When the second limiting protrusion 122 engages with the fourth limiting groove 214, the elastic part 111 is in a natural state.

[0108] When the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 is in an expanded state.

[0109] The connection and cooperation structure between the operating lever 21 and the main pipe 1 is the same as the control structure when the second structural form is adopted, and will not be described in detail here;

[0110] Furthermore, the control structure includes a second control element 24, which is radially movably connected to the operating lever 21. The second control element 24 has a conductive cavity 241 inside. When the second control element 24 is in the sixth position, the conductive cavity 241 connects the first channel 101 and the first output port 202. When the second control element 24 is in the seventh position, the second control element 24 blocks the interior of the operating lever 21.

[0111] Alternatively, please refer to Figure 14-16 and Figure 20 The operating lever 21 has a mounting portion formed radially thereon. The mounting portion divides the interior of the operating lever 21 into a first part and a second part. The first part is connected to the first channel 101 through the first through hole 201, and the second part is connected to the first output port 202. The mounting portion has a mounting cavity. The first part and the second part are respectively connected to the mounting cavity through connecting holes. The second control member 24 is slidably disposed in the mounting cavity along the radial direction of the operating lever 21 and is sealed to the mounting portion.

[0112] Initially, the second limiting protrusion 122 engages with the fourth limiting groove 214, the elastic part 111 is in its natural state, and the second control member 24 is in the sixth position. At this time, the first part is connected to the second part through the conducting cavity 241, and the first channel 101 is connected to the first output port 202. When the main tube 1 is inserted into the urethra, and the operator observes urine being discharged from the first output port 202, it can be determined that the front end of the main tube 1 has entered the bladder. At this time, the operating rod 21 is pulled away from the front end of the main tube 1. The operating rod 21 slides relative to the main tube 1 and pulls the end cap 26 through the traction member 25, causing the elastic part 111 to undergo elastic deformation. When the operating rod 21 moves to the point where the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 unfolds to form a lantern-shaped structure, and the front end of the main tube 1 is anchored in the bladder. The second control member 24 is pressed radially to move it to the seventh position. At this time, the connecting cavity 241 is separated from the two connecting holes radially on the operating rod 21. The second control member 24 disconnects the first part and the second part, and urine no longer flows out from the first output port 202. When urination is required, the second control member 24 is pressed radially along the operating rod 21 from the seventh position to move it to the sixth position. The first part is connected to the second part through the connecting cavity 241, and the first channel 101 is connected to the first output port 202, so that urine can be discharged from the first output port 202. By pressing the second control member 24 to switch between the sixth and seventh positions, the connection between the first channel 101 and the first output port 202 can be controlled while keeping the front end of the main tube 1 anchored to the bladder, thereby realizing the control of the drainage of urine.

[0113] Alternatively, please refer to Figure 17-20The outer wall of the second control component 24 is provided with an annular fourth limiting protrusion, and the inner wall of the mounting part is provided with an eighth limiting groove. The second control component 24 is rotatably disposed in the mounting cavity along the radial direction of the operating rod 21 and is sealed to the mounting part. At the same time, the fourth limiting protrusion and the eighth limiting groove cooperate. The second control component 24 is also provided with a rotating handle to provide a point of force for the operator's hand. The remaining structures of the second control component 24 and the operating rod 21 are the same as those in the third structural form described above, and will not be described again here.

[0114] Initially, the second limiting protrusion 122 engages with the fourth limiting groove 214, and the elastic part 111 is in its natural state. At this time, the first part is connected to the second part through the conducting cavity 241, and the first channel 101 is connected to the first output port 202. When the main tube 1 is inserted into the urethra, and the operator observes urine being discharged from the first output port 202, it can be determined that the front end of the main tube 1 has entered the bladder. At this time, the operating rod 21 is pulled away from the front end of the main tube 1. The operating rod 21 slides relative to the main tube 1 and pulls the end cap 26 through the traction member 25, causing the elastic part 111 to undergo elastic deformation. When the operating rod 21 moves to the point where the second limiting protrusion 122 engages with the fifth limiting groove 215, the elastic part 111 unfolds to form a lantern-shaped structure, and the front end of the main tube 1 is anchored in the bladder, around the central axis of the second control member 24. The second control member 24 is rotated so that the connecting cavity 241 is separated from the two connecting holes in the circumferential direction of the second control member 24. The second control member 24 disconnects the first part and the second part, and urine no longer flows out from the first output port 202. When urination is required, the second control member 24 is rotated around its central axis so that the two ends of the connecting cavity 241 are aligned with the two connecting holes respectively. The first part is connected to the second part through the connecting cavity 241, and the first channel 101 is connected to the first output port 202, so that urine can be discharged from the first output port 202. By rotating the second control member 24 to adjust the extension direction of the connecting cavity 241, the connection and disconnection between the first channel 101 and the first output port 202 can be controlled while keeping the front end of the main tube 1 anchored to the bladder, thereby realizing the control of the drainage of urine.

[0115] Furthermore, an adapter hose 5 is connected to the first output port 202, which is used to connect to the urine collection bag.

[0116] It should be noted that when the control structure adopts the first structural form, the operating lever 21 can also be equipped with the first control element 23 in the second structural form of the control structure, or the second control element 24 in the third structural form. The first control element 23 can be set on the operating lever 21 in the same way as in the second structural form, or the second control element 24 can be set on the operating lever 21 in the same way as in the third structural form, so as to independently control the opening and closing of the first channel 101.

[0117] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A drainage tube, characterized in that, The utility model relates to a lamp holder, which comprises: a main pipe (1) having a first channel (101) inside, the front end of the main pipe (1) having an elastic part (111) that can be stretched; an operating mechanism (2) arranged at the rear end of the main pipe (1) and connected to the front end of the main pipe (1) through the first channel (101), the operating mechanism (2) being used to switch the elastic part (111) between a natural state and an expanded state under the action of an external force, the expanded state being that the elastic part (111) is deformed along the radial direction of the main pipe (1) to form a lantern-shaped structure under the action of an external force, so as to increase the maximum diameter of the elastic part (111); the operating mechanism (2) has a first state, a second state and a third state, when being in the first state, the elastic part (111) is in the natural state, and the first channel (101) is open; when being in the second state, the elastic part (111) is in the expanded state, and the first channel (101) is closed; when being in the third state, the elastic part (111) is in the expanded state, and the first channel (101) is open; the operating mechanism (2) comprises: an operating rod (21) having a hollow structure and arranged at the rear end of the main pipe (1), the operating rod (21) being provided with a first through hole (201) that communicates with the first channel (101), the operating rod (21) being provided with a first output port (202) at the end away from the main pipe (1), the first output port (202) communicating with the first channel (101) through the inside of the operating rod (21); the operating rod (21) is connected to the front end of the main pipe (1) and used to switch the elastic part (111) between the natural state and the expanded state under the action of an external force; a control structure arranged on the operating rod (21) and used to control the on-off between the first channel (101) and the first output port (202).

2. A drainage tube according to claim 1, wherein, the first channel has a first cavity (121), a second cavity (131) and a third cavity, the inner diameter of the second cavity (131) being smaller than the inner diameters of the first cavity (121) and the third cavity; the control structure comprises an annular protruding part (22) arranged on the operating rod (21). When the operating rod (21) is in the first position, the annular protrusion (22) is located in the first cavity (121), the elastic part (111) is in the natural state, the first cavity (121), the second cavity (131) and the third cavity are communicated to make the first channel (101) and the first output port (202) conductive; when the operating rod (21) is in the second position, the annular protrusion (22) is located in the second cavity (131), the elastic part (111) is in the inflated state, the annular protrusion (22) blocks the second cavity (131) to make the first channel (101) and the first output port (202) discontinuous; when the operating rod (21) is in the third position, the annular protrusion (22) is located in the third cavity, the elastic part (111) is in the inflated state, the first cavity (121), the second cavity (131) and the third cavity are communicated to make the first channel (101) and the first output port (202) conductive.

3. A drainage tube according to claim 1, wherein, The control structure comprises a first control member (23), which is movably connected to the operating rod (21) along the axial direction of the operating rod (21), and has a first closed end (231) for blocking the inside of the operating rod (21); when the first control member (23) is in the fourth position, the first channel (101) and the first output port (202) are conductive; when the first control member (23) is in the fifth position, the first closed end (231) blocks the inside of the operating rod (21).

4. The drainage tube of claim 1, wherein, The control structure comprises a second control member (24), which is movably connected to the operating rod (21) along the radial direction of the operating rod (21), and has a conductive cavity (241) in the inside; when the second control member (24) is in the sixth position, the conductive cavity (241) communicates the first channel (101) and the first output port (202); when the second control member (24) is in the seventh position, the second control member (24) blocks the inside of the operating rod (21).

5. The drainage tube of claim 1, wherein, The main pipe (1) further has a second channel (102) in the inside, which is not communicated with the first channel (101), and is provided with a first injection hole at the front end of the main pipe (1); the main pipe (1) is provided with a first injection pipe (3), and the inside of the first injection pipe (3) is communicated with the first injection hole through the second channel (102).

6. The drainage tube of claim 1, wherein, The operating mechanism (2) is internally provided with a third channel (251) which is not communicated with the first channel (101), and the third channel (251) is provided with a second injection hole at the front end of the main pipe (1); the operating mechanism (2) is provided with a second injection pipe (4), and the interior of the second injection pipe (4) is communicated with the second injection hole through the third channel (251).

7. A drainage tube according to claim 2, wherein, The operating rod (21) is in sliding connection with the rear end of the main pipe (1), and the inner wall of the third cavity is provided with a first limiting protrusion (132), and the outer wall of the operating rod (21) is provided with a first limiting groove (211), a second limiting groove (212) and a third limiting groove (213) in the axial direction thereof; When the first limiting protrusion (132) is matched with the first limiting groove (211), the elastic part (111) is in the natural state, and the first channel (101) is communicated with the first output port (202); When the first limiting protrusion (132) is matched with the second limiting groove (212), the elastic part (111) is in the inflation state, and the annular protruding part (22) blocks the second cavity (131); When the first limiting protrusion (132) is matched with the third limiting groove (213), the elastic part (111) is in the inflation state, and the first channel (101) is communicated with the first output port (202).

8. A drainage tube according to claim 3 or 4, wherein, The operating rod (21) is in sliding connection with the rear end of the main pipe (1), and the inner wall of the rear end of the main pipe (1) is provided with a second limiting protrusion (122), and the outer wall of the operating rod (21) is provided with a fourth limiting groove (214) and a fifth limiting groove (215) in the axial direction thereof; When the second limiting protrusion (122) is matched with the fourth limiting groove (214), the elastic part (111) is in the natural state; When the second limiting protrusion (122) is matched with the fifth limiting groove (215), the elastic part (111) is in the inflation state.

9. The drainage tube of claim 1, wherein, The first output port (202) is connected with an adapter hose (5), and the adapter hose (5) is used for connecting a urine collection bag.

Images