Anti-reflux drainage device based on Tesla valve
By using a combination of a first three-way valve and a Tesla valve in the drainage device, and setting up three-way valves with different interface forms to connect the drainage pipe and the flushing branch, the problems of easy clogging and backflow of the Tesla valve are solved, thereby improving the smoothness and applicability of the drainage device.
Patent Information
- Application Number
- CN202421963380.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-08-14
AI Technical Summary
In existing drainage devices, the Tesla valve is prone to blockage due to the deposition of blood or viscous substances, causing reflux and affecting the patient's recovery.
Design a backflow prevention and drainage device based on a Tesla valve. The device uses a combination of a first three-way valve and a Tesla valve. Three-way valves with different interface types are set to connect the drainage pipe and the flushing branch. A second Tesla valve is used to prevent backflow of the flushing fluid. The unidirectional conductivity of the Tesla valve is used to prevent backflow. At the same time, a flushing branch is set at the idle interface of the three-way valve for cleaning.
It effectively prevents backflow of drainage fluid, expands the applicability of the device, and solves the blockage problem caused by long-term use by flushing the branch, thus improving the patency of the drainage device and the patient's quality of life.
Smart Images
Figure CN223504587U_ABST
Abstract
Description
Technical Field
[0001] This application provides a backflow prevention and drainage device based on a Tesla valve, which relates to the field of medical device technology. Background Technology
[0002] Drainage devices are commonly used post-surgical procedures to drain accumulated fluid from the body. After drainage, the fluid is temporarily stored in a drainage bag, which is then emptied into a waste bin when partially full. For patients who can walk, the drainage bag is typically worn on their body. To prevent backflow of drainage fluid due to patient movement, current technology proposes using a Tesla valve on the drainage tube, utilizing its one-way flow characteristic to prevent backflow. While the Tesla valve's unique flow path structure provides one-way flow, the drainage fluid often contains blood or viscous substances. Over time, this can easily cause sedimentation and accumulation on the tube wall, leading to blockage. Utility Model Content
[0003] The technical problem to be solved by this application is the blockage problem of the drainage device using a Tesla valve.
[0004] To solve the above-mentioned technical problems, the technical solution of this application is to provide a backflow prevention and drainage device based on a Tesla valve, including a first three-way valve, a first Tesla valve and a drainage bag. The third port of the first three-way valve is connected to the inlet end of the first Tesla valve and the outlet end of the first Tesla valve is connected to the drainage bag. One of the first port and the second port of the first three-way valve is used to connect to a drainage tube drawn out from the patient's body and the other port is connected to a flushing branch.
[0005] Preferably, the flushing branch includes a flusher that provides flushing liquid and a flushing pipeline connected to a first three-way valve; a second Tesla valve is provided between the flusher and the flushing pipeline, with the flusher connected to the inlet end of the second Tesla valve and the outlet end of the second Tesla valve connected to the flushing pipeline.
[0006] Preferably, the first and second interfaces of the first three-way valve are configured with different interface types.
[0007] Preferably, the flushing pipeline includes a second three-way valve, the outlet end of the second Tesla valve is connected to the third port of the second three-way valve, the first port of the second three-way valve is connected to a first hose that matches the interface form of the first port of the first three-way valve, and the second port of the second three-way valve is connected to a second hose that matches the interface form of the second port of the first three-way valve.
[0008] Preferably, the flushing pipeline includes a main pipe, a first branch pipe and a second branch pipe. The outlet end of the second Tesla valve is connected to the main pipe, and the main pipe is connected to the first branch pipe and the second branch pipe. The end of the first branch pipe is configured to match the interface type of the first interface of the first three-way valve, and the end of the second branch pipe is configured to match the interface type of the second interface of the first three-way valve. Both the first branch pipe and the second branch pipe are provided with buckles to open or close the corresponding branch pipe.
[0009] Preferably, the first port of the first three-way valve is a tapered port, and the second port of the first three-way valve is a thin tube port.
[0010] Preferably, the Tesla valve includes a valve body and a plurality of Tesla valve port units arranged sequentially within the valve body.
[0011] Preferably, the number of Tesla valve orifice units is not less than four.
[0012] Preferably, the drainage bag is provided with a drain port, the drain port is connected to a drain pipe, and the end of the drain pipe is provided with a drain valve.
[0013] Preferably, the drainage bag is equipped with a colorimetric card and a liquid level scale.
[0014] The anti-backflow drainage device based on the Tesla valve provided in this application, on the one hand, utilizes the unidirectional conductivity of the Tesla valve to avoid backflow during the drainage process; on the other hand, by setting different interfaces of the three-way valve to different interface types, it can be matched and connected to different drainage pipes, thereby improving the applicability of the drainage device; furthermore, the idle interface of the three-way valve is provided with a flushing branch. When the drainage device has too much residue on the pipe wall due to long-term use, the three-way valve can be rotated to switch to the flushing branch to flush the drainage device. Attached Figure Description
[0015] Figure 1 A schematic diagram of the anti-backflow diversion device provided in the embodiments of this application;
[0016] Figure 2 Schematic diagrams showing different interface forms of the first three-way valve in the anti-backflow diversion device provided in the embodiments of this application;
[0017] Figure 3 A schematic diagram of the flushing branch structure in the anti-backflow diversion device provided in the embodiments of this application;
[0018] Figure 4 A schematic diagram illustrating the matching of the flushing branch and the interface of the first three-way valve in the anti-backflow diversion device provided in this embodiment of the application. Figure 1 ;
[0019] Figure 5A schematic diagram illustrating the matching of the flushing branch and the interface of the first three-way valve in the anti-backflow diversion device provided in this embodiment of the application. Figure 2 ;
[0020] Figure 6 A schematic diagram illustrating the matching of the flushing branch and the interface of the first three-way valve in the anti-backflow diversion device provided in this embodiment of the application. Figure 3 ;
[0021] Figure 7 A schematic diagram of the Tesla valve structure in the anti-backflow diversion device provided in the embodiments of this application;
[0022] Figure 8 A schematic diagram of the drainage bag structure in the anti-backflow drainage device provided in the embodiments of this application;
[0023] Explanation of reference numerals in the attached drawings: First three-way valve 100, first interface 101, second interface 102, first Tesla valve 200, valve body 210, Tesla valve orifice unit 220, drainage bag 300, drain valve 310, colorimetric card 320, liquid level scale 330, flushing device 400, flushing pipeline 500, second three-way valve 510, first interface 511, second interface 512, first hose 521, second hose 522, main pipe 531, first branch pipe 541, second branch pipe 542, second Tesla valve 600. Detailed Implementation
[0024] To make this application more apparent and understandable, various exemplary embodiments will be described below. These examples are non-limiting and should be understood as illustrating aspects of the broader application of the apparatus, system, and method. These embodiments can be varied and substituted with equivalents without departing from the spirit and scope of this application. Furthermore, various variations can be made to adapt to specific circumstances, materials, material compositions, processing types, processing actions, or steps to suit the purpose, content, or scope of this application. All such variations will be within the protection scope of this application.
[0025] Any materials, dimensions, or quantities described in the overview or detailed description are merely examples and are not intended to limit the subject matter of this application. Furthermore, the various implementations of the embodiments described herein are complementary rather than purely alternating, unless otherwise stated. In other words, implementations from one embodiment can be freely combined with implementations from other embodiments, as will readily be apparent to those skilled in the art, unless these implementations are stated to be used only as substitutions.
[0026] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium such as a flexible tube; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] Drainage devices are commonly used after surgery to drain bodily fluids, blood, or other secretions to prevent them from accumulating in the body and affecting postoperative recovery. However, since the drainage fluid is usually mixed with blood or contains viscous substances, prolonged drainage can easily cause it to settle and accumulate on the tube wall, causing blockage and leading to reflux.
[0029] To address the issues of blockage and backflow, this application provides an anti-backflow diversion device based on a Tesla valve, see [link to relevant documentation]. Figure 1 It includes a first three-way valve 100, a first Tesla valve 200, and a drainage bag 300. The third port of the first three-way valve 100 is connected to the inlet end of the first Tesla valve 200, and the outlet end of the first Tesla valve 200 is connected to the drainage bag 300. The first port 101 and the second port 102 of the first three-way valve 100 are set to different port forms. One port is used to connect to the drainage tube drawn out from the patient's body, and the other port is used to connect to the irrigation branch. The port connected to the drainage component is called the drainage port, and the port connected to the irrigation branch is called the irrigation port.
[0030] In this embodiment, the flushing branch includes a flusher 400 that provides flushing liquid and a flushing pipeline 500 with an adapted drainage interface connected to the first three-way valve.
[0031] The anti-backflow drainage device based on a Tesla valve provided in this application prevents backflow by utilizing the unidirectional conductivity of the Tesla valve. Furthermore, the two ports of the first three-way valve 100 are configured with different interface types, thereby expanding the application scenarios of this drainage device. Additionally, the other port of the first three-way valve 100, which is not connected to the drainage component, can be connected to a flushing branch. When drainage is needed, the first three-way valve 100 opens the drainage port and the third port while closing the flushing port to perform drainage; when flushing is needed, the first three-way valve 100 opens the flushing port and the third port while closing the drainage port, thus flushing the entire drainage device and cleaning any residual substances within it.
[0032] In the embodiments of this application, see Figure 2 The first port 101 of the first three-way valve 100 is a plug-in port, and the second port 102 of the first three-way valve is a thin tubular port. The plug-in port is generally a tapered connector that directly connects to a flexible tube and is locked in place. For example, it can be used to connect wound drainage tubes, double-tube drainage tubes, and gastric tubes. The second port is a thin tubular port that can be used to adapt to biliary drainage T-tubes with a diameter smaller than that of conventional drainage tubes. The second port 102 is fitted with a removable sheath.
[0033] In the embodiments of this application, see Figure 3 A second Tesla valve 600 is also provided between the flusher 400 and the flushing line 500. The flusher 400 is connected to the inlet end of the second Tesla valve 600, and the outlet end of the second Tesla valve 600 is connected to the flushing line 500. The use of the second Tesla valve 600 can prevent the flushing fluid from flowing back.
[0034] In an optional implementation, see Figure 4 and Figure 5 The flushing pipeline 500 includes a second three-way valve 510. The outlet end of the second Tesla valve 600 is connected to the third port of the second three-way valve 510. The first port 511 of the second three-way valve 510 is connected to a first hose 521 that matches the interface type of the first port 101 of the first three-way valve. The second port 512 of the second three-way valve 510 is connected to a second hose 522 that matches the interface type of the second port 102 of the first three-way valve 100. See also... Figure 4 When the drainage tube drawn from the patient's body is connected to the first port 101 of the first three-way valve according to the interface type, the second port 102 of the first three-way valve is connected to the second flexible tube 522. The second three-way valve 510 keeps the second flexible tube 522 connected to the second Tesla valve 600 and closes the first flexible tube 521. See also Figure 5When the drainage tube drawn from the patient's body is connected to the second port 102 of the first three-way valve according to the interface type, the first port 101 of the first three-way valve is connected to the first flexible tube 521, and the second three-way valve 510 keeps the first flexible tube 521 connected to the second Tesla valve 600 and closes the second flexible tube 522. Using this embodiment, regardless of which port of the first three-way valve is the drainage port, the other port, as the flushing port, can be connected to a matching flexible tube, allowing flushing to be performed.
[0035] In another alternative implementation, see Figure 6 The flushing pipeline 500 includes a main pipe 531 and two branch pipes. The main pipe 531 is connected to the second Tesla valve 600, and both branch pipes are connected to the main pipe 531. The two branch pipes include a first branch pipe 541 and a second branch pipe 542. The end of the first branch pipe 541 matches the first interface 101 of the first three-way valve, and the end of the second branch pipe 542 matches the second interface 102 of the first three-way valve. Both branch pipes are provided with latches for opening or closing the corresponding branch pipe. In this embodiment, regardless of which interface of the first three-way valve is the drainage interface, the other interface can be connected to the matching branch pipe as the flushing interface. By opening the latch of the first branch pipe and closing the latch of the second branch pipe, flushing can be performed.
[0036] In the embodiments of this application, see Figure 7 The Tesla valve used includes a valve body 210 and multiple Tesla valve orifice units 220 connected sequentially within the valve body; the number of Tesla valve orifice units 220 is no less than four. The more Tesla valve orifice units 220 the Tesla valve has, the greater the resistance to fluid backflow and the better the anti-backflow effect. Using a Tesla valve ensures smooth drainage in the forward drainage direction while preventing backflow, thereby reducing the occurrence of retrograde drainage and improving the patient's quality of life. Each Tesla valve orifice unit 220 includes three orifices c, d, and e, which are interconnected. When the fluid flows forward, it mainly flows through orifice c of each Tesla valve orifice unit 220, and hardly enters orifices d and e, resulting in smooth forward flow with minimal resistance. If there is liquid backflow, the backflowing liquid will split into two paths: one through hole c and the other through holes d and e. The liquid through holes d and e will flow in the opposite direction due to the guidance of the holes, and will collide with the liquid through hole c, losing a large amount of flow energy. Therefore, the resistance to liquid backflow is large, which plays a role in preventing backflow.
[0037] In the embodiments of this application, see Figure 8The drainage bag 300 has a drain port at its lower end, which is connected to a drain pipe. The drain pipe has a drain valve 310 at its end. The drainage bag 300 is equipped with a colorimetric card 320 and a liquid level scale 330. Medical staff can compare the color of the drainage fluid collected in the drainage bag with the colorimetric card 320 to more clearly and accurately determine the color of the drainage fluid.
[0038] In the embodiments of this application, the medical three-way valve used is made of medical-grade polycarbonate and high-density polyolefin materials.
[0039] The above description is merely a preferred embodiment of this application and does not constitute any limitation on this application in any form or substance. It should be noted that those skilled in the art can make several improvements and additions without departing from this application, and these improvements and additions should also be considered within the scope of protection of this application. Any modifications, alterations, and equivalent variations made by those skilled in the art based on the disclosed technical content without departing from the content and scope of this application are equivalent embodiments of this application. Furthermore, any equivalent changes, alterations, and variations made to the above embodiments based on the essential technology of this application still fall within the scope of the technical solution of this application.
Claims
1. A backflow prevention and drainage device based on a Tesla valve, comprising a first three-way valve, a first Tesla valve, and a drainage bag, wherein the third port of the first three-way valve is connected to the inlet end of the first Tesla valve, and the outlet end of the first Tesla valve is connected to the drainage bag, characterized in that, One of the first and second ports of the first three-way valve is used to connect to a drainage tube led out from the patient's body, and the other port is connected to a flushing branch; the first and second ports of the first three-way valve are configured with different port forms; the first port of the first three-way valve is configured as a conical port, and the second port of the first three-way valve is configured as a thin tube port.
2. The anti-backflow diversion device based on a Tesla valve according to claim 1, characterized in that, The flushing branch includes a flusher that provides flushing liquid and a flushing pipeline connected to a first three-way valve; a second Tesla valve is provided between the flusher and the flushing pipeline, with the flusher connected to the inlet end of the second Tesla valve and the outlet end of the second Tesla valve connected to the flushing pipeline.
3. The anti-backflow diversion device based on a Tesla valve according to claim 2, characterized in that, The flushing pipeline includes a second three-way valve, the outlet end of the second Tesla valve is connected to the third port of the second three-way valve, the first port of the second three-way valve is connected to a first hose that matches the interface form of the first port of the first three-way valve, and the second port of the second three-way valve is connected to a second hose that matches the interface form of the second port of the first three-way valve.
4. The anti-backflow diversion device based on a Tesla valve according to claim 2, characterized in that, The flushing pipeline includes a main pipe, a first branch pipe, and a second branch pipe. The outlet end of the second Tesla valve is connected to the main pipe, and the main pipe is connected to the first branch pipe and the second branch pipe. The end of the first branch pipe is configured to match the interface type of the first interface of the first three-way valve, and the end of the second branch pipe is configured to match the interface type of the second interface of the first three-way valve. Both the first branch pipe and the second branch pipe are provided with buckles to open or close the corresponding branch pipe.
5. The anti-backflow diversion device based on a Tesla valve according to claim 1, characterized in that, The Tesla valve includes a valve body and a plurality of Tesla valve port units connected in sequence within the valve body.
6. The anti-backflow diversion device based on a Tesla valve according to claim 5, characterized in that, The number of Tesla valve orifice units is no less than four.
7. The anti-backflow diversion device based on a Tesla valve according to claim 1, characterized in that, The drainage bag is provided with a drain port, which is connected to a drain pipe, and the end of the drain pipe is provided with a drain valve.
8. The anti-backflow diversion device based on a Tesla valve according to claim 1, characterized in that, The drainage bag is equipped with a colorimetric card and a liquid level scale.