Flushable anti-clogging flat perforated drainage tube

Abstract

The utility model discloses a washable anti-clogging flat punching drainage tube, which relates to the technical field of drainage tubes, and comprises a drainage section and a connecting tube body, the drainage section adopts a flat structure, the outer contour is in a concave-convex alternate shape, a plurality of drainage holes are formed in a concave part, and a convex part is used for supporting surrounding tissues and reducing the contact area with the tissues; tissue fragments, blood clots or secretions are prevented from being attached to the drainage holes, and the blocking risk is reduced. An independent flushing cavity and an independent drainage cavity are arranged in the tube body, the flushing cavity is used for injecting flushing fluid into the wound surface and is matched with the flow guide structure to accelerate liquid diffusion, drainage and flushing are synchronously carried out, the operation process is simplified, and the infection risk is reduced. The reinforcing structure longitudinally arranged on the inner edge of the drainage section effectively maintains the shape stability of the flat drainage section, tube body collapse or deformation caused by the negative pressure effect is prevented, and smooth drainage is ensured. The drainage device has the advantages of efficient drainage, tissue damage prevention, flushable function and structural stability, and is suitable for surgical postoperative drainage and wound healing promotion.

Description

Technical Field

[0001] This utility model relates to the field of drainage tube technology, specifically to a flushable and clog-resistant flat perforated drainage tube. Background Technology

[0002] Drainage catheters are widely used in postoperative surgical treatment. Their core function is to drain fluid and blood clots from body cavities, reducing the risk of infection and promoting wound healing. Currently, most drainage tubes on the market use a flat structure. Compared to traditional round drainage tubes, while this improves drainage efficiency to some extent, it still has the following significant drawbacks:

[0003] Existing flat drainage tubes have a simple drainage section design, lacking a dynamic isolation mechanism for tissues around the opening. During negative pressure drainage, tissue debris, blood clots, or secretions can easily adhere directly to the surface of the drainage hole, causing blockage and requiring frequent replacement or unblocking of the catheter, thus affecting clinical efficacy.

[0004] The existing flat drainage tubes lack physical barriers at the edges of the openings. During long-term placement, granulation tissue is prone to grow into the openings due to negative pressure adsorption. When the tube is removed, the newly formed granulation tissue is easily pulled and torn, causing secondary damage to the wound, increasing patient pain and postoperative recovery difficulty.

[0005] Existing flat drainage tubes focus solely on drainage and do not integrate an irrigation module. Postoperative wound cleaning relies on external irrigation, which is not only cumbersome but may also lead to residual irrigation fluid or an increased risk of infection, failing to achieve the synergistic effect of drainage and irrigation.

[0006] In addition, some drainage tubes are prone to collapse or deformation under negative pressure, resulting in a decrease in drainage efficiency. Although existing technologies (such as CN205698853U) have proposed drainage tubes with an I-shaped pressure-resistant structure, their design is complex and difficult to adapt to different anatomical sites. The optimization of the tissue contact surface is insufficient, and there are still problems of local compression or unstable adhesion.

[0007] In summary, existing flat drainage tubes still have significant shortcomings in terms of anti-clogging performance, tissue protection mechanisms, multi-functional integration, and structural stability, and there is an urgent need to provide an improved drainage tube structure. Utility Model Content

[0008] The problem this invention aims to solve is that existing flat drainage tubes suffer from issues such as easy clogging of the drainage holes, risk of granulation tissue invasion and secondary damage, limited functionality, and insufficient structural stability. The invention provides a flushable and clogging-resistant flat perforated drainage tube that combines efficient drainage, prevention of tissue damage, and flushing capabilities with a stable structure.

[0009] To address the aforementioned issues, this utility model provides a flushable, anti-clogging flat perforated drainage tube, comprising a drainage section and a connected tube body. The drainage section has a flat structure with an outer contour featuring alternating concave and convex sections. The concave sections are provided with multiple drainage holes, while the convex sections are configured to support surrounding tissues during drainage.

[0010] The alternating concave and convex contour structure is designed to reduce the contact area with the drainage site tissue, inhibit the adhesion of tissue debris, coagulation or secretions at the drainage hole, thereby reducing the risk of blockage; through the physical barrier effect of the convex part, it prevents granulation tissue from growing into the drainage hole under negative pressure adsorption, avoiding mechanical damage to the tissue when the tube is removed.

[0011] The tube body has at least one cavity inside for drainage or flushing; the drainage section also includes a reinforcing structure to maintain the shape stability of the flat drainage section and prevent the tube body from collapsing due to negative pressure adsorption.

[0012] Preferably, in the alternating concave and convex contour, the convex portion is a continuous or discontinuous raised structure, and its cross-sectional shape is one or a combination of triangle, quadrilateral, circle or polygon.

[0013] Preferably, the reinforcing structure is a reinforcing rib extending longitudinally along the inner edge of the drainage section, and its cross-sectional shape includes, but is not limited to, a triangle, a quadrilateral, or an arc.

[0014] Preferably, the tube body includes independent flushing chambers and drainage chambers. The flushing chamber is a small cavity set inside a flat drainage section and extending into the tube body, and its inner wall is provided with a flow guiding structure to accelerate liquid diffusion.

[0015] Preferably, the tube body is used to connect with the guide needle for puncture and fixation. The surface of the tube body is provided with imaging marking dot line units for intraoperative positioning or depth marking. The imaging lines or markings on the surface of the tube body facilitate precise intraoperative positioning and depth control. Combined with the connection design between the tube body and the guide needle, the puncture and fixation process is simplified, the operation time is shortened, and the operation risk is reduced.

[0016] Preferably, the cross-sectional shape of the irrigation cavity is selected from circular, elliptical or rectangular, and the flow guiding structure is an auxiliary hole provided on the side wall of the small cavity. The auxiliary hole is connected to the outside and can be used to inject irrigation liquid into the drainage site for wound irrigation, while preventing the upper and lower walls of the drainage tube from sticking together under negative pressure and affecting drainage.

[0017] Preferably, the shape of the small cavity may include, but is not limited to, single cavity, multiple cavity, or through cavity, to adapt to different flushing needs.

[0018] Preferably, the transition area between the drainage section and the tube body has a tapered structure to reduce fluid resistance and improve drainage efficiency.

[0019] Preferably, the distribution density of the drainage holes varies gradually along the length of the drainage section. The tapered design of the transition area between the drainage section and the tube body reduces fluid resistance. The gradient variation of the drainage hole distribution density along the length direction allows for dynamic adjustment of the drainage efficiency according to the fluid characteristics of different drainage locations, thereby adapting to the fluid dynamics requirements of different drainage locations and further improving drainage uniformity and adaptability.

[0020] Compared with the prior art, the present invention achieves the following beneficial technical effects:

[0021] This invention utilizes an alternating concave-convex contour structure in the drainage section, with drainage holes centrally located in the concave portion and a physical support structure formed in the convex portion. This reduces direct contact between the drainage tube and the tissue, effectively inhibiting the adhesion of tissue debris, coagulation, or secretions at the drainage holes, thereby significantly reducing the risk of duct blockage and improving drainage efficiency and the continuity of clinical use.

[0022] The protrusion of this invention forms a barrier during drainage, preventing granulation tissue from growing into the drainage hole under negative pressure adsorption. At the same time, it supports the surrounding tissue, reduces the risk of tearing due to granulation adhesion during tube removal, protects the patient's wound, reduces the incidence of postoperative complications, and improves the patient's comfort and postoperative recovery quality.

[0023] This utility model has independent irrigation and drainage channels inside the tube. Irrigation fluid can be injected into the wound through the irrigation channel, and the fluid diffusion is accelerated by the guiding structure, so as to realize the simultaneous operation of drainage and irrigation without relying on external equipment, simplifying the operation process, improving the wound cleaning effect and infection prevention ability, avoiding the cumbersome external irrigation operation, reducing the risk of infection, and improving the convenience and safety of clinical operation.

[0024] The drainage section of this utility model is equipped with a reinforcing structure that extends longitudinally along the inner edge, which can effectively maintain the shape stability of the flat drainage section, prevent the tube from collapsing or deforming due to negative pressure, ensure the continuous unobstructed drainage channel, and adapt to the mechanical needs of different anatomical sites. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the first embodiment of the flushable and clog-resistant flat perforated drainage tube of this utility model.

[0026] Figure 2 This is a schematic diagram of the side end of the first embodiment.

[0027] Figure 3 This is a schematic diagram of the front view of the first embodiment.

[0028] Figure 4This is a schematic diagram of the second embodiment of the flushable and clog-resistant flat perforated drainage tube of this utility model.

[0029] Figure 5 This is a schematic diagram of the side end of the second embodiment.

[0030] Figure 6 This is a schematic diagram of the front view of the second embodiment.

[0031] Figure 7 This is a schematic diagram of various structures with alternating concave and convex contours.

[0032] Figure 8 Schematic diagrams of various structures for flushing the internal cavities of the flushing channel.

[0033] In the figure: 1-drainage section, 2-tube body, 21-rinsing cavity, 22-drainage cavity, 23-guide structure, 24-development marker dot line unit, 3-alternating concave and convex contour, 31-concave part, 32-convex part, 33-drainage hole, 4-reinforcing structure. Detailed Implementation

[0034] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings and embodiments, provides a detailed description of the flushable and clog-resistant flat perforated drainage tube of this utility model. Example

[0035] Reference Figures 1-3 As shown, this embodiment provides a flushable, anti-clogging flat perforated drainage tube, including a drainage section 1 and a connected tube body 2. Wherein:

[0036] The drainage section 1 has a flat structure with an outer contour 3 featuring alternating concave and convex features. The recesses 31 are evenly distributed along the length of the drainage section, and each recess 31 has multiple drainage holes 33. Drilling holes in the recesses allows for drainage, guiding the discharge of accumulated fluid or blood clots to provide efficient drainage.

[0037] The convex part 32 is a continuously raised triangular cross-sectional structure, as shown in the figure. Figure 7 As shown, the alternating concave and convex contour 3 forms a physical barrier through the protrusion 32, preventing granulation tissue from growing into the drainage hole 33 under negative pressure adsorption, and preventing the drainage hole from being blocked.

[0038] The protrusion 32 prevents granulation tissue from growing into the drainage hole under negative pressure adsorption, which can easily cause granulation tissue to be pulled and torn when the drainage tube is removed, resulting in secondary damage. At the same time, it supports the surrounding tissue during the drainage process, reduces the pressure and contact area on the surrounding tissue, reduces the adhesion of tissue debris, coagulation or secretions, and significantly reduces the risk of blockage caused by foreign body retention during the drainage process.

[0039] Reinforcing structure 4 is set at the inner edge of drainage section 1, such as Figure 3As shown, the inner edge of the drainage section 1 is provided with a triangular cross-section reinforcing rib extending longitudinally. The function of the reinforcing rib is to prevent the upper and lower parts of the flat section from being sucked together during negative pressure adsorption, which would affect the drainage effect. At the same time, it also enhances the strength of the entire tube body to maintain the stability of the flat structure and prevent collapse caused by negative pressure adsorption.

[0040] The tube body 2 has at least one cavity inside for drainage or flushing. In this embodiment, the tube body 2 adopts a single-cavity structure.

[0041] The transition area between the drainage section 1 and the tube body 2 has a tapered structure, with the cross-section gradually transitioning from flat to circular to reduce fluid resistance and improve drainage efficiency.

[0042] Drainage hole density gradient distribution: The density of the holes gradually changes along the length of the drainage section to adapt to the fluid dynamics requirements of different anatomical sites and improve drainage uniformity. Example

[0043] This embodiment, based on Embodiment 1, further optimizes the flushing function of the pipe and enhances its anti-clogging capability, as detailed below:

[0044] Reference Figures 4-6 As shown, in this embodiment, the tube body 2 adopts a dual-cavity structure, with an independent flushing cavity 21 and a drainage cavity 22 inside the tube body 2.

[0045] Irrigation cavity 21: Used to inject irrigation fluid into the drainage site to achieve postoperative wound cleaning.

[0046] Drainage channel 22: Used to drain fluid or blood from body cavities, reducing the risk of infection.

[0047] The flushing cavity 21 is a small, circular cross-section cavity extending from the interior of the flat drainage section 1, such as... Figure 8 As shown, its inner wall is provided with a flow guiding structure 23, which can take the form of auxiliary holes on the side wall of a small cavity to accelerate the diffusion of the irrigation fluid and improve the wound cleaning effect. The drainage cavity 22 is the main channel through the tube body and is used to drain accumulated fluid.

[0048] Imaging marker dot line unit 24: The tube surface is equipped with imaging markers, which can be used for intraoperative positioning or depth control, facilitating precise operation by doctors. Example

[0049] This embodiment provides several optional structural variations for different application scenarios, see reference. Figures 7-8 As shown, it includes:

[0050] Different morphologies of protrusions 32: They can be continuous or discontinuous raised structures, with cross-sectional shapes including triangles, quadrilaterals, circles or polygons, to adapt to different tissue environments.

[0051] The flushing cavity 21 has multiple cross-sectional shapes: circular, elliptical or rectangular, and can be combined with auxiliary holes to optimize the flushing effect and prevent the cavity from collapsing due to negative pressure.

[0052] Various variations of the reinforced structure 4: The reinforced structure can employ longitudinal stiffeners, and its cross-sectional shape can include triangles, quadrilaterals, or arcs to improve the compressive strength of the tube.

[0053] Multi-chamber design: In addition to single-chamber structures, dual-chamber or multi-chamber structures can also be used to further enhance flushing and drainage functions.

[0054] To facilitate understanding of the above technical solutions of this utility model, the following detailed description of the above technical solutions of this utility model is provided through specific usage methods.

[0055] The specific working process is as follows: The doctor connects the guide needle to the tube body 2, and inserts the drainage tube into the target wound or body cavity effusion area through puncture. Using the imaging markers 24 on the surface of the tube body, such as imaging lines or marks, the position and depth of the drainage tube are accurately located by X-ray or ultrasound imaging to ensure that the drainage section 1 accurately covers the target area. The negative pressure suction device is connected to the drainage channel 22, and the negative pressure drainage function is activated to perform the drainage operation. Under the action of negative pressure, the drainage holes 33 set in the recess 31 of the drainage section 1 continuously drain the effusion, blood clots, etc. in the body cavity through the drainage channel 22.

[0056] The protrusions 32 on the surface of the drainage section have a continuous or intermittent raised structure, which acts as a physical barrier to prevent granulation tissue or tissue debris from entering the channel under negative pressure adsorption, thereby reducing the risk of blockage. At the same time, the protrusions also reduce the direct contact area with the surrounding tissue while supporting it, effectively preventing the adhesion of foreign objects.

[0057] In the first embodiment, the reinforcing structure 4—a longitudinally extending triangular reinforcing rib—is provided along the inner edge of the drainage section to ensure that the drainage section does not collapse or deform under negative pressure, maintain the shape stability of the tube, and ensure that the drainage cavity remains unobstructed.

[0058] In the second embodiment, the tube 2 employs independent irrigation channels 21 and drainage channels 22. When blockage is found at the drainage site or further wound cleaning is required, irrigation fluid is injected into the drainage area through the irrigation channel 21.

[0059] The irrigation fluid is guided by the flow structure 23 in the irrigation cavity and is uniformly and rapidly diffused to the wound and the vicinity of the drainage hole through the auxiliary hole located on the side wall of the small cavity. This effectively removes attached blood clots, tissue debris or other blockages, while preventing the drainage tube from affecting fluid flow due to the upper and lower walls sticking together under negative pressure, and preventing the tube from collapsing under negative pressure.

[0060] The waste liquid after rinsing is discharged synchronously through the drainage channel 22, realizing the synergistic effect of drainage and rinsing, without relying on external rinsing equipment.

[0061] During drainage, the doctor can adjust the negative pressure or inject flushing fluid as needed to ensure effective drainage. After the drainage treatment is completed, the drainage tube is slowly removed. During removal, the physical barrier provided by the protrusion prevents granulation tissue from penetrating deeper into the drainage hole, thus reducing mechanical damage to surrounding tissues and effectively lowering the risk of secondary trauma.

[0062] Through the above steps, this invention achieves multiple functions including efficient drainage, anti-blockage, irrigation, and wound protection. It also simplifies intraoperative procedures and reduces the risk of infection and other complications. It significantly improves the safety and efficiency of postoperative treatment while reducing the complexity of medical procedures, and has broad clinical application value.

[0063] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0064] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A flushable anti-clogging flat drainage tube, comprising a drainage section (1) and a tube body (2) connected thereto, characterized in that, the drainage section (1) is flat in structure, and has an alternating concave-convex profile (3) with a plurality of drainage holes (33) in the concave part (31) and a convex part (32) configured to support the surrounding tissue during drainage; the alternating concave-convex profile (3) is configured to reduce the contact area with the tissue at the drainage site, inhibit the adhesion of tissue debris, blood clots or secretions at the drainage holes, thereby reducing the risk of clogging; through the physical barrier effect of the convex part (32), the growth of granulation tissue into the drainage hole under negative pressure adsorption is prevented, and mechanical damage to the tissue during tube removal is avoided; the tube body (2) is provided with at least one lumen for drainage or flushing; the drainage section (1) further comprises a reinforcing structure (4) for maintaining the shape stability of the flat drainage section and preventing the collapse of the tube body (2) caused by negative pressure adsorption.

2. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, In the alternating concave-convex profile (3), the convex part (32) is a continuous or intermittent raised structure, and the cross-sectional shape is one or a combination of triangle, quadrilateral, circle or polygon.

3. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, The reinforcing structure (4) is a reinforcing rib extending longitudinally along the inner edge of the drainage section (1), and the cross-sectional shape includes but is not limited to triangle, quadrilateral or arc.

4. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, The tube body (2) comprises an independent flushing lumen (21) and a drainage lumen (22), the flushing lumen (21) is a small cavity provided inside the flat drainage section (1) and extending to the inside of the tube body (2), and the inner wall is provided with a flow guide structure (23) to accelerate liquid diffusion.

5. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, The tube body (2) is used to connect with a guide needle for puncture fixation, and the surface of the tube body (2) is provided with a visible marker point line unit (24) for intraoperative positioning or depth marking.

6. The flushable, anti-clogging, flat, perforated drain tube of claim 4, wherein, The cross-sectional shape of the flushing lumen (21) is selected from circle, ellipse or rectangle, and the flow guide structure (23) is an auxiliary hole provided on the side wall of the small cavity, which communicates with the outside through the auxiliary hole, and can be used to inject flushing liquid to the drainage site for wound flushing, while preventing the upper and lower walls of the drainage tube from adhering under the action of negative pressure.

7. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, The transition area between the drainage section (1) and the tube body (2) is tapered in structure to reduce fluid resistance and improve drainage efficiency.

8. The flushable, anti-clogging, flat, perforated drain tube of claim 1, wherein, The distribution density of the drainage holes (33) changes gradiently along the length direction of the drainage section to adapt to the fluid dynamics requirements of different drainage sites.

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