Anti-reflux drainage tube

Abstract

The utility model relates to drainage tube technical field especially relates to a kind of anti-reflux drainage tube, including the pipe body with compressible capsule in one end, the pipe body is provided with the adsorption hole for adsorbing internal drainage liquid of human body in the end away from compressible capsule;The end away from the pipe body of compressible capsule is provided with outlet pipe, switch valve is provided on this outlet pipe, one-way valve for controlling drainage liquid to flow out from human body interior to human body exterior is also provided on the pipe body, sensor for monitoring pressure difference on both sides of one-way valve is also provided on the pipe body, the drainage tube further includes control mainboard for receiving sensor signal, the output end of control mainboard is used to send control signal, control signal is used to control prompting device to work, it can reduce the occurrence of reflux by setting one-way valve, through sensor, control mainboard and prompting device, can timely prompt when appearing reflux, one-way valve blockage or negative pressure degree is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of drainage tube technology, and in particular to an anti-backflow drainage tube. Background Technology

[0002] Following thoracic or abdominal surgery, drainage tubes are typically placed to drain blood, pus, or other exudates from the wound. Their main functions can be summarized as follows: First, drainage: The drainage tube uses negative pressure or gravity to remove excess fluid (such as blood, pus, urine, etc.) or gas, reducing tissue pressure and edema. This drainage helps relieve patient pain and discomfort and promotes wound healing. Second, fluid collection and monitoring: The drainage tube can collect and measure exudates, such as urine or blood, to assess the severity of the condition and the effectiveness of treatment. By observing the color, nature, and amount of drainage fluid, doctors can determine whether the patient's condition is improving and whether there is a risk of infection or other complications. Third, promoting wound healing: The drainage tube removes accumulated blood, pus, or other foreign matter from the wound, providing a clean environment. This clean environment helps reduce bacterial growth, lowers the risk of infection, and thus promotes wound healing. Fourth, treating and preventing infection: The drainage tube plays an important role in treating infection. Draining secretions or pus from the infected site can reduce the spread of infection. Simultaneously, doctors can use drainage tubes for local irrigation and medication, accelerating healing. Furthermore, drainage tubes can prevent postoperative infections, especially when placed near the wound, effectively removing blood, pus, and exudate around the wound and reducing the risk of infection.

[0003] The existing drainage tubes have the following problems during use: First, they are prone to backflow, that is, the drainage fluid absorbed from the body flows back into the body through the drainage tube. Second, backflow or blockage cannot be detected in time, leading to infection or loss of drainage effect. Third, there is no standard for patients to adjust the negative pressure of the drainage tube, so the drainage effect cannot be guaranteed. Utility Model Content

[0004] This utility model provides an anti-backflow drainage tube, which can reduce the occurrence of backflow by setting a one-way valve. Through sensors, control board and prompting device, it can promptly prompt when backflow, one-way valve blockage or insufficient negative pressure occurs.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] This utility model provides an anti-reflux drainage tube, comprising a tube body with a compressible bladder at one end, an adsorption hole for adsorbing drainage fluid from inside the body at the end of the tube body away from the compressible bladder, an outlet tube with a switch valve at the end of the compressible bladder away from the tube body, a one-way valve for controlling the flow of drainage fluid from inside the body to the outside of the body, a sensor for monitoring the pressure difference across the one-way valve, and a control main board for receiving the sensor signal. The output of the control main board is used to send a control signal to control the operation of a prompting device.

[0007] Preferably, the sensor is a differential pressure sensor, and the two ends of the differential pressure sensor bypass the check valve and are connected to the pipelines on both sides of the check valve.

[0008] Preferably, the sensors are a first pressure sensor and a second pressure sensor located on the pipe body and independently disposed on both sides of the one-way valve.

[0009] Preferably, the control motherboard also controls the prompting device based on the pressure values ​​of the first and second pressure sensors.

[0010] Preferably, the prompting device includes a touch screen and a speaker, and the touch screen is also used to display the parameter adjustment interface of the control motherboard.

[0011] Preferably, a branch pipe is provided on the tube body near the end where the adsorption hole is provided and the one-way valve is provided, which communicates with the interior of the branch pipe, and a sealing cap is provided at the end of the branch pipe.

[0012] Preferably, the one-way valve includes a housing communicating with the pipe body, a spring fixed inside the housing, and a bead for sealing the connection between the housing and the pipe body. A guide rod is fixed at the axial position of the pipe body, and the guide rod passes through the center of the bead.

[0013] The beneficial effect of this utility model is that by setting a one-way valve, the phenomenon of backflow in the drainage tube can be reduced.

[0014] By setting up a differential pressure sensor, a control board, and an alert device, an alarm can be triggered when the pressure difference across the two ends of the check valve is abnormal.

[0015] By setting up a first sensor, a second sensor, a control board, and an alert device, an alarm can be triggered when the pressure values ​​at both ends of the check valve are abnormal. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the prior art structure provided for this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 A schematic diagram of the structure of the first embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the first embodiment of the present invention.

[0022] Figure 6 Provided by this utility model Figure 5 Enlarged structural diagram at point A;

[0023] Figure 7 A schematic diagram of the host structure provided by this utility model;

[0024] Figure 8 The circuit block diagram of the first embodiment of this utility model is provided;

[0025] Figure 9 The circuit block diagram of the second embodiment of this utility model is shown.

[0026] In the diagram, 1. Tube body; 2. Compressible capsule; 3. Adsorption orifice; 4. One-way valve; 401. Housing; 402. Spring; 403. Bead; 404. Guide rod; 5. Switch valve; 6. Outlet pipe; 7. Main unit; 701. Power supply; 702. Control main board; 703. Speaker; 704. Touch screen; 8. Differential pressure sensor; 9. Sealing cap; 10. Branch pipe; 11. First pressure sensor; 12. Second pressure sensor. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0028] To enable those skilled in the art to understand the innovative aspects of this utility model, the prior art involved in this utility model is first described, with reference to... Figure 1 The existing drainage tube includes a tube body 1, one end of which is connected to a compressible bladder 2. The other end of the tube body 1 is provided with adsorption holes 3 (multiple adsorption holes 3 are generally provided to ensure sufficient adsorption effect). An outlet tube 6 is provided at one end of the compressible bladder 2 and the tube body 1, and a switch valve 5 is provided on the outlet tube 6. In use, first, the end of the tube body 1 with the adsorption holes 3 is placed inside the body and then secured. The tube body 1 is then clamped (the tube body 1 is generally made of soft silicone and can be clamped by bending or using pliers). After clamping, the tube body 1 is in a state of blocking the compressible bladder 2. Then, the switch valve 5 on the outlet tube 6 at one end of the compressible bladder 2 is kept open, and the compressible bladder 2 is compressed. The compression process... The gas inside the compressible bladder 2 can only be discharged through the outlet pipe 6. Then, the switch valve 5 on the outlet pipe 6 of the compressible bladder 2 is closed, and the clamped tube 1 is kept in a closed state. Under its own tendency to recover its deformation, the compressible bladder 2 forms a negative pressure. This negative pressure extends from the tube all the way to the inside of the human body. When drainage fluid seeps out from the wound inside the human body, under the action of negative pressure, it flows from the adsorption hole 3 along the tube into the inside of the compressible bladder 2. When enough drainage fluid accumulates inside the compressible bladder 2, the ability of the compressible bladder 2 to generate negative pressure also decreases. The switch valve 5 is opened again to release the drainage fluid. Then, the tube 1 is clamped to compress the compressible bladder 2 and the switch valve 5 is closed. The clamped drainage tube is then kept in a closed state. The existing drainage tubes have several problems in use. First, during activity, unintentional movements may cause the compressible bladder 2 to be squeezed during drainage, resulting in the drainage fluid in the tube 1 flowing back into the body. Second, the negative pressure capacity of the existing compressible bladder 2 is generally judged by visual inspection of its compression state, without a fixed standard. Third, when the existing tube becomes blocked, it cannot be detected in time, leading to a decrease in the drainage effect. Based on the above, it is necessary to design an anti-backflow drainage tube to solve these problems.

[0029] refer to Figures 2-6The first innovation of this utility model lies in the installation of a one-way valve 4 in the pipeline. This one-way valve 4 allows the drainage fluid from inside the body to flow unidirectionally through the pipeline to the compressible bladder 2. Specifically, when the pipeline pressure on the side of the one-way valve 4 near the compressible bladder 2 is greater than the pipeline pressure on the side of the one-way valve 4 near the adsorption hole 3, the one-way valve 4 is in a closed-circuit state, allowing the drainage fluid to pass through. When the pipeline pressure on the side of the one-way valve 4 near the compressible bladder 2 is less than the pipeline pressure on the side of the one-way valve 4 near the adsorption hole 3, the one-way valve 4 is in a closed-circuit state. At this time, the pipeline is closed under the action of the one-way valve 4. This type of one-way valve 4 is quite common in daily life, such as swing-type one-way valves 4 and spring-loaded 402 type one-way valves 4. To enable those skilled in the art to more clearly understand the principle of the one-way valve 4, this utility model provides a structural diagram of a spring-loaded 402 type one-way valve 4. (Refer to...) Figure 6 The spring-type one-way valve 402 includes a housing 401 communicating with the tube body 1, a spring 402 fixed inside the housing 401, and a bead 403 for sealing the connection between the housing 401 and the tube body 1. A guide rod 404 is fixed at the axial position of the tube body 1, and the guide rod 404 passes through the center of the bead 403. When the one-way valve 4 is close to the compressible bladder 2, the pressure ( Figure 6 When the pressure on the lower side of the valve is greater than the pressure on the side of the one-way valve 4 near the adsorption hole 3, Figure 6 On the upper middle side, the ball is in a blocking state at the connection between the one-way valve 4 and the pipeline. When the pressure on the side of the one-way valve 4 near the compressible bladder 2 is less than the pressure on the side of the one-way valve 4 near the adsorption hole 3, the ball slides down along the guide rod 404 under the action of the pressure difference, and at the same time the spring 402 is compressed, thereby achieving the effect of one-way conduction.

[0030] Furthermore, to address the issue of existing pipeline blockages being promptly detected by personnel, the drainage tube of this invention also includes a control motherboard 702, a prompting device, and a sensor. The sensor monitors the pressure difference between the pipelines on both sides of the one-way valve 4. When the one-way valve 4 is blocked, the drainage fluid accumulates inside the tube 1 on the side of the one-way valve 4 closest to the adsorption hole 3, resulting in a reduced negative pressure effect. Meanwhile, the tube 1 on the side of the one-way valve 4 closest to the compressible bladder 2 remains under high negative pressure due to the action of the compressible bladder 2. Thus, by monitoring the pressure difference between the pipelines on both sides of the one-way valve 4, it is possible to indirectly determine whether the one-way valve 4 is blocked. When the sensor detects that the pressure difference between the pipelines on both sides of the one-way valve 4 exceeds a threshold, the controller activates the prompting device to issue a prompt. The specific prompting device can be a touch screen 704, used to display a visual prompt, such as "Pipeline Blockage," or a speaker 703, used to issue a voice prompt, such as "Pipeline Blockage."

[0031] Specifically, the aforementioned sensor can be a differential pressure sensor 8. The two ends of the differential pressure sensor 8 bypass the one-way valve 4 and are connected to the pipelines on both sides of the one-way valve 4. There are various types of existing differential pressure sensors, such as capacitive differential pressure sensors and pressure-sensing chip differential pressure sensors, which will not be described in detail here.

[0032] Specifically, the aforementioned sensors can also be a first pressure sensor 11 and a second pressure sensor 12 located on the tube body 1 and independently installed on both sides of the one-way valve 4. The output terminals of the first pressure sensor 11 and the second pressure sensor 12 are both connected to the control motherboard 702. Based on the signals from the first pressure sensor 11 and the second pressure sensor 12, the control motherboard 702 judges the pressure difference in the pipeline on both sides of the one-way valve 4. When the pressure difference exceeds a set threshold, the control prompt device is activated. Furthermore, the control motherboard 702 also judges the current negative pressure state of the compressible bladder 2 based on the values ​​of the first pressure sensor 11 and the second pressure sensor 12. When the negative pressure value that the compressible bladder 2 can provide is lower than the set threshold, the control motherboard 702 controls the prompt device to perform corresponding prompts, such as displaying "The current negative pressure is low".

[0033] Furthermore, the touch display 704 mentioned above is also used to adjust control parameters, such as adjusting the negative pressure range of the drainage process according to the patient's recovery. In the early postoperative period, the tissue produces a lot of drainage fluid, and a higher negative pressure value is required during this period to ensure the absorption effect of the drainage fluid. As the wound gradually heals, it is generally adjusted to a smaller negative pressure range to ensure that the wound is not affected by negative pressure and thus does not cause tissue damage.

[0034] Furthermore, in order to clean the one-way valve 4 of the drainage tube when it becomes blocked, a branch tube 10 is provided on the tube body 1 and near the end where the adsorption hole 3 is provided, which is connected to the one-way valve 4. A sealing cap 9 is provided at the end of the branch tube 10. By clamping the tube body 1 between the branch tube 10 and the adsorption hole 3 and opening the sealing cap 9, physiological saline is injected into the branch tube 10 body 1, which can clean the tube body 1.

[0035] Specifically, the speaker 703, touch screen 704, and control motherboard 702 mentioned above are all installed in a housing (not labeled in the figure). Inside the housing, a power supply 701 (a disposable power supply or a rechargeable power supply) is also installed, thus forming a host 7. The housing of the host 7 is fixed to the tube body, thereby achieving the effect of easy portability.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above-described embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reflux-resistant drainage tube, comprising a tube body (1) having a compressible bladder (2) at one end, wherein the end of the tube body (1) away from the compressible bladder (2) is provided with an adsorption hole (3) for adsorbing internal drainage fluid; and an outlet tube (6) is provided at the end of the compressible bladder (2) away from the tube body (1), wherein a switch valve (5) is provided on the outlet tube (6), characterized in that, The tube body (1) is also equipped with a one-way valve (4) for controlling the outflow of drainage fluid from inside the human body to outside the human body. The tube body (1) is also equipped with a sensor for monitoring the pressure difference on both sides of the one-way valve (4). The drainage tube also includes a control main board (702) for receiving the sensor signal. The output end of the control main board (702) is used to send a control signal, which is used to control the prompting device to work.

2. The anti-backflow drainage tube according to claim 1, characterized in that, The sensor is a differential pressure sensor (8), and the two ends of the differential pressure sensor (8) bypass the one-way valve (4) and are connected to the pipelines on both sides of the one-way valve (4).

3. The anti-backflow drainage tube according to claim 1, characterized in that, The sensors are a first pressure sensor (11) and a second pressure sensor (12) located on the pipe body (1) and independently installed on both sides of the one-way valve (4).

4. The anti-backflow drainage tube according to claim 3, characterized in that, The control board (702) also operates based on the pressure value control and prompting device of the first pressure sensor (11) and the second pressure sensor (12).

5. The anti-backflow drainage tube according to claim 1, characterized in that, The prompting device includes a touch screen (704) and a speaker (703), and the touch screen (704) is also used to display the parameter adjustment interface of the control motherboard (702).

6. The anti-backflow drainage tube according to claim 1, characterized in that, A branch pipe (10) is provided between the end of the pipe body (1) and the one-way valve (4) near the adsorption hole (3) and the pipe body (1) and communicates with the interior of the branch pipe (10). A sealing cap (9) is provided at the end of the branch pipe (10).

7. The anti-backflow drainage tube according to claim 1, characterized in that, The one-way valve (4) includes a housing (401) communicating with the pipe body (1), a spring (402) fixed inside the housing (401), and a bead (403) for sealing the connection between the housing (401) and the pipe body (1). A guide rod (404) is fixed at the axial position of the pipe body (1), and the guide rod (404) passes through the center of the bead (403).

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