Anti-reflux device for drainage bag

Abstract

The technical scheme of the utility model provides an anti-reflux device for a drainage bag. The anti-reflux device comprises a cylinder body, an anti-reflux mechanism, a gravity protective tube and a floating ball exhaust tube, the anti-backflow mechanism is arranged on the inner side of the barrel, a gas-liquid medium flows in one direction, one end of the gravity protective tube is connected with the barrel and arranged on the flowing side of the anti-backflow mechanism, and a gravity ball capable of sliding along the axis of the gravity protective tube is arranged in the gravity protective tube. The sliding block is used for sliding to a tube opening of the gravity protective tube for plugging when inclining downwards; the floating ball exhaust pipe is connected and communicated with the gravity protective tube, and a floating ball body capable of sliding in the axial direction of the floating ball exhaust pipe is arranged in the floating ball exhaust pipe. According to the anti-backflow device, the anti-backflow mechanism is arranged in the cylinder body, the basic anti-backflow function of the anti-backflow device is achieved, the gravity ball is arranged in the gravity protective tube, the floating ball body is arranged in the floating ball volleyball tube, an exhaust channel is provided, and meanwhile basic protection and safety protection for liquid leakage prevention are provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical appliance technical field especially, relate to a drainage bag anti -backflow device. BACKGROUND

[0002] Drainage bag is one of medical equipment, is mainly used for collecting the liquid drained from human body. In order to avoid the liquid in drainage bag backflow, usually there is the structure preventing liquid backflow. For example, China patent 202320705378.6 discloses a backflow prevention mechanism arranged at the interface of drainage bag, including cover and base respectively connected at the bottom end of drainage tube and the interface of drainage bag, and the two are fixedly connected, the base upper end opening is fixed with elastic check body for preventing fluid backflow, and the cover is pressed on the elastic check body.

[0003] For the above prior art, there are still the following problems: the drainage of gastrointestinal tract, abdominal cavity and other positions will be mixed with gas into the drainage bag, due to the blockage of backflow prevention structure, under the accumulation of gas, the bag will be inflated, which not only leads to poor drainage, but also affects the volume of liquid stored in the drainage bag. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a drainage bag anti-backflow device to solve the technical problems of gas bag inflation, poor drainage and affecting the liquid storage capacity of the drainage bag in the prior art.

[0005] To achieve the above technical purpose, the technical scheme of the utility model provides a drainage bag anti-backflow device, which comprises:

[0006] A cylinder body;

[0007] A backflow prevention mechanism arranged on the inner side of the cylinder body for one-way flow of gas-liquid medium;

[0008] A gravity safety tube, one end of the gravity safety tube is connected with the cylinder body and arranged on the flow side of the backflow prevention mechanism, a gravity ball slidable along the axis of the gravity safety tube is arranged in the gravity safety tube, and the gravity ball is used to slide to the pipe opening of the gravity safety tube for plugging when inclined downward; and

[0009] A float ball exhaust pipe connected with and communicated with the gravity safety tube, a float ball body slidable along the axial direction of the float ball exhaust pipe is arranged in the float ball exhaust pipe, and the float ball body is used to enter the pipe and float to the pipe opening of the float ball exhaust pipe for plugging.

[0010] Further, the gravity safety tube comprises a sliding pipe parallel to the axial direction of the cylinder body, the gravity ball is slidingly connected in the sliding pipe, the inner side of the sliding pipe is provided with a first clamping hole matched with the outer diameter of the gravity ball, and the bottom end of the sliding pipe is communicated with the cylinder body through a first pipeline.

[0011] Further, the floating ball exhaust pipe comprises an exhaust pipe body parallel to the axial direction of the cylinder body, the floating ball body is slidably connected to the inner side of the exhaust pipe body, the inner side of the exhaust pipe body is provided with a second clamping hole matched with the outer diameter of the floating ball body, and the bottom side of the exhaust pipe body is communicated with the top end of the sliding pipe through a second pipeline.

[0012] Further, the anti-backflow mechanism comprises an elastic valve and a closing frame, the closing frame is arranged on the inner wall of the cylinder body and is provided with a hollow hole, and the elastic valve is arranged at the bottom of the closing frame and has a first position state of covering the hollow hole and a second position state of bending downward and opening the hollow hole.

[0013] Further, the first pipeline and the second pipeline form a transversely arranged U-shaped flow channel.

[0014] Further, the inner cavity of the sliding pipe is conical and narrows from top to bottom, and the first clamping hole is provided with an elastic pad.

[0015] Further, the top end of the floating ball exhaust pipe is inserted with a sealing plug.

[0016] Further, the connection between the gravity safety pipe and the cylinder body is arranged on the back of the bending direction of the elastic valve.

[0017] Further, the number of the elastic valves is at least one.

[0018] Further, the cylinder body comprises a square cylinder and a cylindrical joint, and the two cylindrical joints are arranged at the top end and the bottom end of the square cylinder respectively and are used for connecting the drainage tube and the drainage bag.

[0019] Compared with the prior art, the drainage bag anti-backflow device has the beneficial effects that: the anti-backflow mechanism arranged in the cylinder body constitutes the basic anti-backflow function of the anti-backflow device, the gravity ball arranged in the gravity safety pipe and the floating ball body arranged in the floating ball exhaust pipe provide the basic protection and the safety protection of liquid leakage while providing the exhaust passage. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of a drainage bag anti-backflow device according to an embodiment of the present application;

[0021] Figure 2 FIG. 2 is a structural perspective view of a drainage bag anti-backflow device according to an embodiment of the present application;

[0022] Figure 3 FIG. 3 is a structural front view of a drainage bag anti-backflow device according to an embodiment of the present application;

[0023] Figure 4is according to the utility model discloses the installation sealing plug of the anti -backflow device of drainage bag's front view of section of the cone -shaped inner cavity of the anti -backflow device of drainage bag;

[0024] Figure 5 is according to the utility model discloses the installation sealing plug of the anti -backflow device of drainage bag's front view of section of the cone -shaped inner cavity of the anti -backflow device of drainage bag;

[0025] Figure 6 is according to the utility model discloses the installation sealing plug of the anti -backflow device of drainage bag's front view of section of the cone -shaped inner cavity of the anti -backflow device of drainage bag;

[0026] In the drawing,

[0027] 1, cylinder body;11, square cylinder;12, cylindrical joint;

[0028] 2, anti -backflow mechanism;21, elastic valve;22, closed frame;2201, hollow mouth;

[0029] 3, gravity safety tube;31, gravity ball;32, sliding tube;33, first pipeline;3201, first clamping port;3202, elastic pad;

[0030] 4, float ball exhaust pipe;41, float ball body;42, exhaust pipe body;43, second pipeline;4201, second clamping port;

[0031] 5, sealing plug. Specific implementation

[0032] The preferred embodiments of the utility model will be described in detail below in conjunction with the drawings, wherein, the drawing constitutes the part of this application, and with the embodiment of the utility model for explaining the principle of the utility model, not for limiting the scope of the utility model.

[0033] As Figures 1-6The utility model provides a kind of anti-reflux device of drainage bag, including cylinder 1, anti-reflux mechanism 2, gravity safety tube 3 and float ball exhaust pipe 4;Anti-reflux mechanism 2 is arranged in the inside of the cylinder 1, gas-liquid medium one-way flow, can adopt check valve or other mechanism with anti-reflux, so that the gas-liquid medium drained can one-way flow;Gravity safety tube 3 is connected with the cylinder 1 in one end, and it is arranged in the flow-through side of anti-reflux mechanism 2, i.e. the side close to drainage bag, after the side of patient drainage from medium flow through anti-reflux mechanism 2, gravity ball 31 that can slide along its axis is equipped in gravity safety tube 3, for sliding to the pipe opening of gravity safety tube 3 when downward inclination and plugging, mainly for downward inclination or inverted drainage bag, make the orientation of this anti-reflux device change, utilize gravity, guide gravity ball 31 to slide down along inclined surface, move to pipe opening and plugging, avoid this position state, under the action of gravity, liquid medium passes downward through gas exhaust flow channel and is discharged, with the safety function of preventing leakage;Float ball exhaust pipe 4 is connected with gravity safety tube 3 and communicates, float ball body 41 that can slide along its axial direction is equipped in float ball exhaust pipe 4, for liquid into pipe, float ball body 41 floats to the pipe opening of float ball exhaust pipe 4 and plugging, under normal vertical placement, gravity ball 31 and float ball body 41 are located at the bottom of the containing pipeline respectively, so that gravity safety tube 3 and float ball exhaust pipe 4 have gap, constitute the exhaust flow channel of gas, when liquid overflows, it will enter gravity safety tube 3 and float ball exhaust pipe 4, when entering float ball exhaust pipe 4, buoyancy is generated to float ball body 41, so that it floats and blocks the pipe opening of float ball exhaust pipe 4, and then the effect of preventing liquid leakage is achieved, but, when downward inclination or inverted drainage bag, the float ball structure will fail, therefore, cooperate with gravity ball 31 component in gravity safety tube 3, can provide the function of preventing leakage when downward inclination or inverted drainage bag, improve the reliability of whole structure.

[0034] In the embodiment, in order to provide the air exhaust channel in the state of tilting, the safety measure for preventing liquid overflow, the gravity safety tube 3 includes a sliding tube 32 parallel to the axial direction of the cylinder 1, the gravity ball 31 is slidingly connected in the sliding tube 32, the inner side of the sliding tube 32 is provided with a first clamping hole 3201 matched with the outer diameter of the gravity ball 31, and the bottom end of the sliding tube 32 is communicated with the cylinder 1 through a first pipeline 33, the inner diameter of the first clamping hole 3201 is matched with the outer diameter of the gravity ball 31, when tilting occurs, a slope is provided for the gravity ball 31 to slide down, the gravity ball 31 slides along the wall of the sliding tube 32 and is embedded in the first clamping hole 3201 to form plugging, and then the communication between the sliding tube 32 and the second pipeline 43 is cut off.

[0035] Further, the floating ball exhaust pipe 4 includes an exhaust pipe body 42 parallel to the axial direction of the cylinder body 1, the floating ball body 41 is slidably connected to the inner side of the exhaust pipe body 42, the inner side of the exhaust pipe body 42 is provided with a second clamping opening 4201 matched with the outer diameter of the floating ball body 41, the bottom side of the exhaust pipe body 42 is communicated with the top end of the sliding pipe 32 through a second pipe 43, under the normal floating ball structure, if the liquid overflows and flows through the first pipe 33, the sliding pipe 32, the second pipe 43 and enters the exhaust pipe body 42, the floating ball body 41 is floated and embedded in the second clamping opening 4201, so as to form a blockage and avoid liquid overflow.

[0036] It can be understood that, in the normal vertical placement of the drainage bag, the anti-backflow device is also vertically placed in the normal direction, the gravity safety pipe 3 and the floating ball exhaust pipe 4 are in the initial normal state, the gravity ball 31 and the floating ball body 41 are both in the blocking state, at this time, the entire exhaust passage is unobstructed, the gas will flow through the first pipe 33, the sliding pipe 32, the second pipe 43 and the exhaust pipe body 42, and be discharged, and the liquid will flow downward into the drainage bag and accumulate, effectively solving the problem of bag swelling caused by gas retention.

[0037] In an embodiment, in order to achieve the basic anti-backflow effect, the anti-backflow mechanism 2 includes an elastic valve 21 and a closing frame 22, the closing frame 22 is integrally formed on the inner wall of the cylinder body 1 and has a hollow opening 2201 serving as a medium flow passage, wherein the elastic valve 21 is arranged at the bottom of the closing frame 22 and has a first position state of covering the hollow opening 2201 and a second position state of bending downward and opening the hollow opening 2201, the elastic valve 21 is a sheet-shaped elastic material, under the pressure of the fluid, the elastic valve 21 bends to form the second position state, and the hollow opening 2201 is penetrated to form the downward flow of the medium, when the fluid presses downward to form the first position state, the elastic valve 21 covers the hollow opening 2201 to form a blockage, and the length and width of the elastic valve 21 covering the hollow opening 2201 are greater than the length and width of the hollow opening 2201, so as to form a cover and block the upward flow of the fluid, thereby achieving the anti-backflow effect.

[0038] It can be understood that the specific structure of the anti-backflow mechanism 2 is only one possible implementation, and the anti-backflow mechanism 2 can also adopt a mature one-way valve structure to achieve the one-way flow of the fluid.

[0039] In an embodiment, the first pipe 33 and the second pipe 43 form a transversely arranged U-shaped flow channel, so as to avoid the immersion of the floating ball exhaust pipe 4 when the fluid flows through the cylinder body 1.

[0040] In an embodiment, in order to improve the gravity anti-blocking sensitivity of the gravity safety pipe 3, please refer to Figure 5 andFigure 6 The inner cavity of the sliding tube 32 is conical from top to bottom, the first clasp 3201 is provided with an elastic pad 3202, and the conical inner cavity forms a downward inclined surface when the sliding tube 32 is flat, so that the gravity ball 31 slides to the first clasp 3201, and the elastic pad 3202 is extruded to seal the first clasp 3201.

[0041] It can be understood that, under the design of the conical inner cavity, if the drainage bag falls to the ground with the front flat or the back flat, an inclined surface can be formed to guide the sliding of the gravity ball 31, and the elastic pad 3202 is extruded by gravity to seal the gap and block the first clasp 3201.

[0042] In an embodiment, in the case of not needing to exhaust, the air port is directly closed, please refer to Figure 4 The top end of the floating ball exhaust pipe 4 is inserted with a sealing plug 5.

[0043] In an embodiment, in order to reduce the probability of sputtering on the gravity safety tube 3 when the fluid flows, the connection between the gravity safety tube 3 and the barrel 1 is arranged on the back of the bending direction of the elastic valve 21, and the gravity safety tube 3 is shielded by the downward bending elastic valve 21.

[0044] In an embodiment, in order to form a basic anti-reflux structure, the number of elastic valves 21 is at least one, and optionally, the number of elastic valves 21 can be multiple and distributed in a circle, which can correspond to multiple hollow ports.

[0045] In an embodiment, in order to connect with the drainage tube and the drainage bag, the barrel 1 includes a square barrel 11 and a cylindrical joint 12, two cylindrical joints 12 are respectively arranged at the top end and the bottom end of the square barrel 11, and are used to connect the drainage tube and the drainage bag.

[0046] The specific working process of the utility model is as follows: in normal use, the drainage tube and the drainage bag are connected to the cylinder joint 12 at the top and the cylinder joint 12 at the bottom of the cylinder body 1 respectively; in the drainage process, the fluid flows from top to bottom through the cylinder body 1, presses the elastic valve 21 downward, makes it bend, and then passes through the hollow port 2201, is injected into the drainage bag, while the air can be discharged through the exhaust flow channel composed of the first pipeline 33, the sliding pipe 32, the second pipeline 43 and the exhaust pipe body 42, and does not affect the normal anti-reflux of the anti-reflux mechanism 2; when the liquid overflows, it will flow through the first pipeline 33, the sliding pipe 32 and the second pipeline 43, and then enter the exhaust pipe body 42, the floating ball body 41 in the exhaust pipe body 42 floats, is clamped into the second clamping port 4201, forms the blockage of the air discharge flow channel, and avoids the liquid overflow; when the drainage bag falls and forms the lying or the inversion, the gravity ball 31 slides along the sliding pipe 32, is clamped into the first clamping port 3201, forms the blockage of the air discharge flow channel, and avoids the liquid overflow.

[0047] The whole working process is ended, and the contents not described in detail in the specification all belong to the prior art known by the professional technical personnel.

[0048] The above is only the preferable specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of the changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An anti-reflux device for a drainage bag, characterized in that The application relates to a one-way valve for a drainage tube, which comprises the following parts: a cylinder; a backflow prevention mechanism arranged on the inner side of the cylinder for one-way flow of gas-liquid medium; a gravity safety tube, one end of which is connected with the cylinder and arranged on the flow side of the backflow prevention mechanism, the gravity safety tube being provided with a gravity ball which can slide along the axial line of the gravity safety tube and is used for sliding to the pipe opening of the gravity safety tube to block the pipe opening when the tube is inclined downward; a floating ball exhaust pipe connected with the gravity safety tube and in communication with the gravity safety tube, the floating ball exhaust pipe being provided with a floating ball body which can slide along the axial line of the floating ball exhaust pipe and is used for blocking the pipe opening of the floating ball exhaust pipe when liquid enters the pipe. The gravity safety tube comprises a sliding pipe which is parallel to the axial line of the cylinder, the gravity ball is slidably connected in the sliding pipe, the inner side of the sliding pipe is provided with a first clamping hole matched with the outer diameter of the gravity ball, and the bottom end of the sliding pipe is in communication with the cylinder through a first pipe.

2. The anti-reflux device for a drainage bag according to claim 1, characterized in that The floating ball exhaust pipe comprises an exhaust pipe body which is parallel to the axial line of the cylinder, the floating ball body is slidably connected to the inner side of the exhaust pipe body, the inner side of the exhaust pipe body is provided with a second clamping hole matched with the outer diameter of the floating ball body, and the bottom side of the exhaust pipe body is in communication with the top end of the sliding pipe through a second pipe.

3. The anti-reflux device for a drainage bag according to claim 2, characterized in that The backflow prevention mechanism comprises an elastic valve and a closing frame, the closing frame is arranged on the inner wall of the cylinder and is provided with a hollow hole, and the elastic valve is arranged on the bottom of the closing frame and has a first position state in which the elastic valve covers the hollow hole and a second position state in which the elastic valve is bent downward and opens the hollow hole.

4. The anti-reflux device for a drainage bag according to claim 3, characterized in that The first pipe and the second pipe form a transversely arranged U-shaped flow channel.

5. The anti-reflux device for a drainage bag according to claim 4, characterized in that The inner cavity of the sliding pipe is conical and narrows from top to bottom, and the first clamping hole is provided with an elastic pad.

6. The anti-reflux device of claim 5, wherein The top end of the floating ball exhaust pipe is inserted with a sealing plug.

7. The anti-reflux device of claim 6, wherein The connection between the gravity safety tube and the cylinder is arranged on the back of the bending direction of the elastic valve.

8. The anti-reflux device for a drainage bag of claim 7, wherein, The number of the elastic valves is at least one.

9. The anti-reflux device of claim 8, wherein The cylinder comprises a square cylinder and two cylinder joints, the two cylinder joints are arranged at the top end and the bottom end of the square cylinder respectively and are used for connecting a drainage tube and a drainage bag.

10. The anti-reflux device of claim 9, wherein ​

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