Visual drainage tube with self-expansion function

Abstract

The utility model relates to a visual drainage tube with a self-expansion function, the visual drainage tube with the self-expansion function comprises a visual module and a drainage tube, and the visual module can obtain an image of a target position; the drainage tube is provided with an access channel for the visual module to enter, and the front end of the drainage tube is provided with a self-expansion structure; wherein the self-expanding structure is provided with an opening, the opening can be opened under the acting force of the visual module, and the size of the opening can be adjusted according to the position of the visual module relative to the opening. The front end of the drainage tube is arranged in the form of the expansion structure, so that when blood or drainage substances are more, the expansion structure is slightly expanded, the lens can be prevented from being polluted by the blood or the drainage substances, and the accuracy of the acquired image can be improved. Through the arrangement, the puncture precision is improved, the quality of a drainage operation is improved, the presale of the operation is improved, and the safety and effectiveness of the drainage operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a visual drainage tube with a self-expansion function. Background Art

[0002] Drainage tubes are used to drain fluid from body cavities, discharging excess fluid and maintaining pressure balance within the body. In clinical medicine, drainage is required in areas such as the thoracic cavity, cranial cavity, lumbar cistern, and bladder.

[0003] Currently, drainage tubes are available in both single-lumen and multi-lumen configurations. However, these tubes are typically inserted blindly, relying on the physician's experience to determine the desired puncture location and depth. This inevitably leads to inaccurate punctures, resulting in failed punctures, repeated punctures, incorrect placement of the tube, and poor drainage outcomes. The inability to confirm the need for repositioning during the drainage process can result in incomplete drainage and a poor prognosis.

[0004] In related art, a detachable visual module is installed inside the drainage tube to assist the doctor in visually puncturing and guide the doctor in determining the optimal drainage location. However, the design of the drainage tube in related art leaves the visual module completely exposed during the detection process. When there is a large amount of blood or fluid to be drained, the visual module is easily contaminated, resulting in the inability to accurately determine the drainage location. Utility Model Content

[0005] Based on this, it is necessary to provide a visual drainage tube with a self-expanding function to address the technical problem in related technologies that the visual module is easily contaminated by blood, resulting in the inability to accurately determine the drainage position.

[0006] A visual drainage tube with a self-expanding function, comprising:

[0007] A visual module capable of acquiring images of target locations;

[0008] A drainage tube is constructed with an inlet and outlet passage for the visual module to enter, and a front end of the drainage tube is constructed with a self-expanding structure;

[0009] The self-expanding structure has an opening, which can be opened under the action of the visual module, and the size of the opening can be adjusted according to the position of the visual module relative to the opening.

[0010] In one embodiment, the drainage tube comprises:

[0011] A drainage tube body, wherein the drainage tube body is constructed as a hollow structure, and a spherical end portion of the drainage tube body is provided with petals to construct the self-expanding structure, and a through groove formed after the petals are opened is the opening;

[0012] When the visual module is operably moved from the entry and exit channel to the spherical end, as the visual module moves toward the opening, the opening is gradually opened by the visual module. When the visual module exits, the opening gradually closes under the elastic force of the open petals.

[0013] In one embodiment, a groove is constructed on the inner wall of each petal, and the grooves on the plurality of petals define the ends of the inlet and outlet channels, and the grooves are constructed in a conical shape.

[0014] In one embodiment, the petal groove is configured as a stepped groove.

[0015] In one embodiment, the drainage tube body is made of any one of silicone, polyvinyl chloride or polyurethane.

[0016] In one embodiment, a hydrophilic coating is provided on the outer side of the spherical end of the drainage tube body.

[0017] In one embodiment, the visual module includes:

[0018] A visual tube is constructed with a mounting cavity and a wire passage communicating with the mounting cavity, wherein the end of the visual tube where the mounting cavity is located is configured as a transparent structure;

[0019] A visual component is provided in the installation cavity, and the visual component is capable of acquiring an image signal of the target position;

[0020] a socket, electrically connected to the visual component via a cable;

[0021] The cable passage is used for passing the cables.

[0022] In one embodiment, the visual component includes:

[0023] The outer tube is packaged and provided with a receiving cavity;

[0024] A support seat is provided in the accommodating cavity;

[0025] an image module, fixedly supported on the support base, and configured to acquire an image signal of the target position;

[0026] A light source is fixedly supported on the support base and arranged adjacent to the image module, and is used to provide lighting for the image module.

[0027] In one embodiment, the image module includes:

[0028] An imaging element, configured to acquire an image signal of the target position;

[0029] The lens is arranged at the front end of the imaging element to expand the field of view of the imaging element.

[0030] In one embodiment, the drainage tube further comprises:

[0031] pipe joints;

[0032] A drainage cavity branch tube is connected to the drainage tube body through the pipe joint;

[0033] A drainage Luer connector is connected to an end of the drainage cavity branch tube away from the drainage tube body;

[0034] T-type valve and drainage Luer connector;

[0035] The drainage tube body, the pipe joint, the drainage cavity branch, the drainage Luer joint and the T-shaped valve are connected in sequence to form the inlet and outlet channel.

[0036] Beneficial effects of the utility model:

[0037] The utility model provides a visual drainage tube with a self-expanding function. By setting a visual module to obtain images of the location that needs drainage, it assists doctors in obtaining more lesions. An entry and exit channel for the visual module is set on the drainage tube to facilitate the entry of the visual module. By constructing a self-expanding structure at the front end of the drainage tube, when the visual module is operably moved from the entry and exit channel to the spherical end, as the visual module moves toward the opening, the opening is gradually opened by the visual module. When the visual module withdraws, the opening gradually closes under the elastic force of the open petal. When the drainage tube is in the puncture operation, the expansion structure at the front end of the drainage tube is in an expanded state, and the puncture is performed under image guidance to determine whether the path is correct during the puncture process. When the drainage tube is in the drainage operation, the visual module withdraws from the entry and exit channel of the drainage tube to provide the best channel for drainage and improve the efficiency of drainage. When it is gradually discovered during the drainage process that there is not much blood or other substances to be drained, the visual module can be reinserted and the front end of the drainage tube can be expanded to detect whether there are more lesions that need drainage, further enhancing the efficacy of drainage. The front end of the drainage tube is set in the form of an expansion structure, so that when there is a lot of blood or drainage substances, the expansion structure is slightly expanded, which helps to avoid blood or drainage substances from contaminating the lens, thereby improving the accuracy of the acquired image. Such a setting helps to improve the accuracy of puncture, improve the quality of drainage surgery, improve the pre-sale of surgery, and increase the safety and effectiveness of drainage surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of a visual drainage tube with self-expansion function provided by one embodiment of the present invention;

[0039] Figure 2 A schematic structural diagram of a visual drainage tube with self-expansion function provided by one embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of the self-expanding structure of the visual drainage tube with self-expanding function in a closed state provided by one embodiment of the present invention;

[0041] Figure 4 A schematic diagram of the structure of a self-expanding structure in a visual drainage tube with a self-expanding function in an expanded state provided by one embodiment of the present invention;

[0042] Figure 5 A schematic structural diagram of a self-expanding structure of a visual drainage tube with a self-expanding function provided by one embodiment of the present invention when the groove is conical;

[0043] Figure 6 A schematic structural diagram of a self-expanding structure of a visual drainage tube with a self-expanding function provided by one embodiment of the present invention when the groove of the self-expanding structure is stepped;

[0044] Figure 7 A schematic diagram of the end structure of a self-expanding visual drainage tube with a self-expanding function provided by one embodiment of the present invention when the self-expanding structure adopts four petals;

[0045] Figure 8 A schematic structural diagram of a visual module in a visual drainage tube with self-expansion function provided by one embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the end structure of a visual module in a visual drainage tube with self-expansion function provided by one embodiment of the present invention.

[0047] Reference numerals:

[0048] Visual module 100; visual tube 110; visual component 120; package outer tube 121; support base 122; image module 123; light source 124; socket 130; drainage tube 200; drainage tube body 210; drainage hole 211; self-expanding structure 212; groove 2121; opening 2122; pipe joint 220; drainage cavity branch 230; drainage Luer joint 240; T-valve 250. DETAILED DESCRIPTION

[0049] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0053] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0055] See Figures 1 to 9 An embodiment of the present invention provides a visual drainage tube 200 with a self-expanding function. The visual drainage tube 200 with a self-expanding function includes a visual module 100 and a drainage tube 200. The visual module 100 can obtain an image of a target location. The drainage tube 200 is configured with an entry and exit channel for the visual module 100 to enter. The front end of the drainage tube 200 is configured with a self-expanding structure 212. The self-expanding structure 212 has an opening 2122. The opening 2122 can be opened under the action of the visual module 100, and the size of the opening 2122 can be adjusted according to the position of the visual module 100 relative to the opening 2122.

[0056] This technical solution provides a self-expanding visual drainage tube 200. By setting a visual module 100 to obtain images of the location where drainage is required, it helps doctors to obtain more lesions. An inlet and outlet channel for the visual module 100 is provided on the drainage tube 200 to facilitate the entry of the visual module 100. By constructing a self-expanding structure 212 at the front end of the drainage tube, when the visual module 100 is operably moved from the inlet and outlet channel to the spherical end, as the visual module 100 moves toward the opening 2122, the visual module 100 moves. Figure 4As shown, the opening 2122 is gradually opened by the visual module 100, and when the visual module 100 is withdrawn, the opening 2122 is gradually closed under the elastic force of the open petal. When the drainage tube 200 is in the puncture operation, the expansion structure at the front end of the drainage tube 200 is in an expanded state, and the puncture is performed under image guidance to determine whether the path during the puncture process is correct. When the drainage tube 200 is in the drainage operation, the visual module 100 is withdrawn from the inlet and outlet channels of the drainage tube 200 to provide the best channel for drainage and improve the efficiency of drainage. When it is gradually found that there is not much blood or other substances to be drained during the drainage process of the drainage tube 200, the visual module 100 can be reinserted and the front end of the drainage tube 200 can be expanded to explore whether there are more lesions that need drainage, further enhancing the efficacy of drainage. The front end of the drainage tube 200 is configured as an expandable structure. When a large amount of blood or drainage material is present, the expandable structure slightly expands, preventing blood or drainage material from contaminating the lens, thereby improving the accuracy of the captured image. This configuration helps improve puncture accuracy, enhance the quality of drainage surgery, improve surgical preparation, and increase the safety and effectiveness of drainage surgery.

[0057] like Figure 2 As shown, in one embodiment, the drainage tube 200 includes a drainage tube body 210, a pipe connector 220, a drainage lumen branch 230, a drainage Luer connector 240, and a T-valve 250. The drainage lumen branch 230 is connected to the drainage tube body 210 through the pipe connector 220; the drainage Luer connector 240 is connected to the end of the drainage lumen branch 230 away from the drainage tube body 210; and the T-valve 250 is connected to the drainage Luer connector 240. The drainage tube body 210, the pipe connector 220, the drainage lumen branch, the drainage Luer connector 240, and the T-valve 250 are sequentially connected to form an inlet and outlet channel.

[0058] It is understandable that the inlet and outlet channels can be used for the visual module to enter and exit to obtain images of the drainage position and thus determine the lesion; they can also be used as drainage channels to drain the liquid in the drainage area out of the body.

[0059] The length of the drainage tube body 210 is set to be between 200-300mm; the material of the drainage tube body 210 is any one of silicone, polyvinyl chloride or polyurethane. Preferably, the material of the drainage tube body 210 is silicone. The outer side of the spherical end of the drainage tube body 210 is provided with a hydrophilic coating, for example, a silver coating. Figure 3 As shown, a plurality of drainage holes 211 are provided on the front end of the drainage tube body 210 for providing an inlet and outlet channel for the liquid to be drained during drainage.

[0060] The pipe connector 220 connects the drainage tube body 210 to the drainage lumen branch 230. The pipe connector 220 is made of engineering plastics such as ABS (acrylonitrile butadiene styrene) or HIPS (high-impact polystyrene), but can also be made of metals such as stainless steel or titanium alloy. The drainage lumen branch 230 connects to the drainage Luer connector 240 and is made of the same material as the drainage tube body 210. The T-valve 250 locks the visual module 100 and controls the opening and closing of the drainage channel. It can also be used to facilitate drug injection. It can be made of PC (polycarbonate).

[0061] like Figures 3 to 6 As shown, in one embodiment, the drainage tube body 210 is constructed as a hollow structure, and the spherical end of the drainage tube body 210 is opened to form a self-expanding structure 212, and the through groove formed after the opening is an opening 2122; wherein, when the visual module 100 is operably moved from the entry and exit channel to the spherical end, as the visual module 100 moves toward the opening 2122, the opening 2122 is gradually expanded by the visual module 100, and when the visual module 100 withdraws, the opening 2122 is gradually closed under the elastic force of the opened petals.

[0062] The self-expanding structure 212 is configured as a spherical end with open petals, allowing the leaflets to be elastic. When pressed by a rigid component, the head of the petal expands, causing the slots between the petals to open, allowing the visual module 100 to detect the scene at the drainage site. When the compressive force is removed, the petals return to their initial state. The self-expanding structure 212 is configured as an open petal structure, making good use of the elastic deformation of the drainage tube body 210, resulting in a simple structure and easy processing.

[0063] like Figure 5 Specifically, a groove 2121 is formed on the inner wall of each petal. The grooves 2121 on the multiple petals define the ends of the inlet and outlet channels and are tapered. The tapered surface of the grooves 2121 guides the movement of the visual module 100. Furthermore, as the visual module 100 gradually moves, the openings 2122 of the petals gradually open, allowing the size of the opening 2122 of the self-expanding structure 212 to be adjusted according to actual application scenarios.

[0064] like Figure 7As shown, in another embodiment, the petal groove 2121 is constructed as a stepped groove 2121. Specifically, the groove 2121 on the petal can be sequentially set to a conical surface, a cylindrical surface and a conical surface connected in sequence, the smallest radius of the first conical surface is the same as the radius of the cylindrical surface, and the largest radius of the second conical surface is less than or equal to the radius of the cylindrical surface. This arrangement allows the self-expanding structure 212 to have multiple fixed slots inside, thereby achieving multi-level adjustment of the self-expanding structure 212 according to different application scenarios.

[0065] It is understood that the self-expanding structure 212 can be opened in half, such as Figure 3 and Figure 4 As shown. It can also be divided into 3 or 4 equal parts for opening, such as Figure 7 shown.

[0066] like Figure 8 As shown, in one embodiment, the visual module 100 includes a visual tube 110, a visual component 120 and a socket 130. The visual tube 110 is constructed with an installation cavity and a wire passage connected to the installation cavity. The end of the visual tube 110 where the installation cavity is set is set as a transparent structure; the visual component 120 is set in the installation cavity, and the visual component 120 can obtain a field of view of the target position; the socket 130 is electrically connected to the visual component 120 through a cable; wherein, the wire passage is used for the cable to pass through.

[0067] Specifically, if Figure 9 As shown, the visual component 120 includes a packaging outer tube 121, a support seat 122, an image module 123 and a light source 124. The packaging outer tube 121 is provided with a accommodating cavity; the support seat 122 is arranged in the accommodating cavity; the image module 123 is fixedly supported on the support seat 122, and the image module 123 is used to obtain the image signal of the target position; the light source 124 is fixedly supported on the support seat 122 and is arranged adjacent to the image module 123, and the light source 124 is used to provide lighting for the image module 123.

[0068] Furthermore, the image module 123 includes an imaging element and a lens. The imaging element is used to obtain an image signal of a target position; the lens is provided at the front end of the imaging element to expand the field of view of the imaging element.

[0069] The image module 123 is used to acquire image signals, and includes a lens and an imaging element. The lens is a convex lens for achieving a larger viewing angle. The lens can be a single piece or a lens group. The imaging element can be a CCD camera or a CMOS camera. Preferably, the imaging element adopts a CMOS camera. Optionally, the CMOS camera models include the OH0B and OV6946 models produced by OMNIVISION (Haowei Technologies). The lens system is arranged at the front end of the imaging element, and the image signal enters the imaging element through the lens and is converted into an electrical signal, which is transmitted to the image processor through the visual tube 110 and the plug at the rear to realize the image display function.

[0070] The light source 124 is used to illuminate the observation area. The light source 124 can be an LED lighting device, which is arranged at the end of the package outer tube 121. Alternatively, an optical fiber can be used to transmit the cold light source 124, and an external cold light source 124 can be connected separately to achieve lighting.

[0071] The outer packaging tube 121 is a tube used to encapsulate the image module 123. It can be made of stainless steel, titanium alloy, or a biocompatible polymer. A window is opened in the packaging component, and the visible end of the graphic component is placed in the window to obtain the image signal.

[0072] The package support base 122 is used to place the image module 123 and the light source 124. The package support base 122 is a hollow structure. The light source 124 and the image module 123 are set at the front end, and a cable hole is reserved at the rear for transmitting image information and light source 124 signals.

[0073] The visual tube 110 and plug are used to connect the visual component 120 to the image processing system. The visual tube 110 includes an outer sheath and an internal cable. The outer sheath is placed in the inlet and outlet channel of the drainage tube body 210. The outer sheath of the visual tube 110 can be made of TPU (thermoplastic polyurethane elastomer rubber), FEP (fluorinated ethylene propylene copolymer), or PE (polyethylene). PE is preferably used for the outer sheath. The plug is used to connect the visual module 100 to the image processor.

[0074] Reference Figures 1 to 9 It is understood that the method of using the self-expanding visual drainage tube 200 provided by the present invention is as follows:

[0075] When in use, the doctor first places the visual module 100 into the inlet and outlet channel of the drainage tube 200. Under the pressure of the visual module 100, the opening 2122 of the self-expanding structure 212 gradually expands, allowing the image component of the visual module 100 to obtain a visual field of the drainage site. When the visual module 100 is pushed to the desired position, the visual module 100 is locked using the T-valve 250. The doctor then places the drainage tube 200 into the area requiring drainage under image guidance, removes the visual module 100, and performs the drainage operation. During the drainage process, the visual module 100 can be reinserted to confirm whether the drainage is complete, or to find other areas requiring drainage and adjust the drainage position until the drainage is complete. The visual drainage tube 200 with self-expansion function provided by the embodiment of the present invention can help to clarify the drainage position in the early stage of drainage, and can assist in exploring more lesions that need drainage during the drainage process, which helps to improve the accuracy of puncture, improve the quality of drainage surgery, improve the prognosis of drainage surgery, and increase the safety and effectiveness of drainage surgery.

[0076] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A visual drainage tube with self-expansion function, characterized in that: The visual drainage tube with self-expansion function comprises: A visual module capable of acquiring images of target locations; A drainage tube, having an inlet and outlet passage for the visual module to enter, and a front end of the drainage tube having a self-expanding structure; The self-expanding structure has an opening, which can be opened under the action of the visual module, and the size of the opening can be adjusted according to the position of the visual module relative to the opening.

2. The visual drainage tube with self-expansion function according to claim 1, characterized in that: The drainage tube comprises: A drainage tube body, wherein the drainage tube body is constructed as a hollow structure, and a spherical end portion of the drainage tube body is provided with petals to construct the self-expanding structure, and a through groove formed after the petals are opened is the opening; When the visual module is operably moved from the entry and exit channel to the spherical end, as the visual module moves toward the opening, the opening is gradually opened by the visual module. When the visual module exits, the opening gradually closes under the elastic force of the open petals.

3. The self-expanding visual drainage tube according to claim 2, characterized in that: A groove is formed on the inner wall of each petal, and the grooves on the plurality of petals define the ends of the inlet and outlet channels, and the grooves are formed in a conical shape.

4. The self-expanding visual drainage tube according to claim 3, characterized in that: The petal groove is configured as a stepped groove.

5. The visual drainage tube with self-expansion function according to claim 2, characterized in that: The drainage tube body is made of any one of silicone, polyvinyl chloride or polyurethane.

6. The self-expanding visual drainage tube according to claim 2, characterized in that: The outer side of the spherical end of the drainage tube body is provided with a hydrophilic coating.

7. The self-expanding visual drainage tube according to any one of claims 1 to 6, characterized in that: The visual module includes: A visual tube is constructed with a mounting cavity and a wire passage communicating with the mounting cavity, wherein the end of the visual tube where the mounting cavity is located is configured as a transparent structure; A visual component is provided in the installation cavity, and the visual component is capable of acquiring an image signal of the target position; a socket, electrically connected to the visual component via a cable; The cable passage is used for passing the cables.

8. The self-expanding visual drainage tube according to claim 7, characterized in that: The visual components include: The outer tube is packaged and provided with a receiving cavity; A support seat is provided in the accommodating cavity; an image module, fixedly supported on the support base, and configured to acquire an image signal of the target position; A light source is fixedly supported on the support base and arranged adjacent to the image module, and is used to provide lighting for the image module.

9. The self-expanding visual drainage tube according to claim 8, characterized in that: The image module includes: An imaging element, configured to acquire an image signal of the target position; The lens is arranged at the front end of the imaging element to expand the field of view of the imaging element.

10. The self-expanding visual drainage tube according to any one of claims 2 to 6, characterized in that: The drainage tube further comprises: pipe joints; A drainage cavity branch tube is connected to the drainage tube body through the pipe joint; A drainage Luer connector is connected to an end of the drainage cavity branch tube away from the drainage tube body; T-type valve and drainage Luer connector; Wherein, the drainage tube body, the pipe joint, the drainage cavity branch, the drainage Luer joint and the T-shaped valve are connected in sequence to form the inlet and outlet channel.

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