Chest drainage device with backflow prevention function

Abstract

The utility model provides a chest drainage device with a backflow prevention function, which comprises a backflow prevention mechanism arranged between a drainage tube and a drainage box; the backflow prevention mechanism comprises a connecting box, a connecting pipe, a sliding block, a connecting frame plate, a sealing check block and an elastic piece. One end of the connecting pipe is communicated with the connecting box, and the other end of the connecting pipe is communicated with the drainage box; two opposite vertical grooves are formed in the connecting box, sliding blocks are connected into the vertical grooves in a sliding mode, the two sides of the connecting frame plate are correspondingly fixed to the sliding blocks, the sealing check block is installed on the connecting frame plate, and the sealing check block corresponds to the position of a through hole where the drainage pipe is communicated with the connecting box. The elastic piece is connected between the sliding block and the lower wall of the vertical groove and used for enabling the sliding block to drive the sealing check block to block the through hole under the elastic effect of the elastic piece. The device not only improves the safety and effectiveness of drainage, but also reduces the risk of complications caused by backflow, and plays an important role in improving the comfort level and the recovery speed of a patient.

Description

Technical Field

[0001] The utility model relates to the technical field of thoracic and cardiovascular surgery, and in particular to a chest cavity drainage device with a backflow prevention function. Background Art

[0002] When the chest cavity and lung tissue of the human body suffer from trauma or pathological changes, common complications such as hemothorax and pneumothorax require closed drainage for emergency treatment and treatment. This process is mainly to effectively drain the gas and fluid in the pleural cavity out of the body to ensure the normal relaxation of the lungs, maintain the respiratory function of the lung tissue, and promote the healing of lung tissue wounds.

[0003] The existing closed chest drainage device has largely solved the problem of gas and fluid accumulation in patients, helping to maintain negative pressure in the chest cavity and ensuring the normal vital characteristics of the patient's lungs. However, in actual application, we found that the existing drainage device has a backflow phenomenon when the patient's chest negative pressure is large, which not only affects the drainage effect, but may also have an adverse effect on the patient's recovery process. Utility Model Content

[0004] The utility model aims to provide a chest drainage device with anti-backflow function in view of the deficiencies in the prior art.

[0005] The specific technical solutions are as follows:

[0006] A chest drainage device with anti-backflow function, comprising a negative pressure device, a drainage box, a negative pressure tube and a drainage tube, wherein the surface of the drainage box is connected to the negative pressure tube, the other end of the negative pressure tube is connected to the negative pressure device, and the drainage box is provided with a drainage tube, comprising

[0007] An anti-backflow mechanism is arranged between the drainage pipe and the drainage box; the anti-backflow mechanism includes a connecting box, a connecting pipe, a slider, a connecting frame plate, a sealing block and an elastic member; one end of the connecting pipe is connected to the connecting box, and the other end is connected to the drainage box; two opposite vertical grooves are arranged inside the connecting box, and sliders are slidably connected in the vertical grooves, and the two sides of the connecting frame plate are correspondingly fixed on the sliders, and the sealing block is installed on the connecting frame plate, and the sealing block corresponds to the position of the through hole connecting the drainage pipe and the connecting box, and the elastic member is connected between the slider and the lower wall of the vertical groove to enable the slider to drive the sealing block to block the through hole under the elastic action of the elastic member.

[0008] Optionally, the connecting frame plate includes a frame body and a cross body arranged inside the frame body, and the sealing block is fixedly installed at the center of the cross body.

[0009] Optionally, the sealing block includes a first block and a second block connected to the lower end of the first block, the second block has a larger cross-sectional diameter than the first block, the first block is used to block the through hole, and the second block is used to strengthen the seal.

[0010] Optionally, the upper surface of the sealing block is arranged in an arc shape.

[0011] Optionally, a liquid level sensor is provided in the drainage box.

[0012] Optionally, the drainage box is connected to a drainage pipe, and a one-way valve is provided on the drainage pipe.

[0013] Optionally, the elastic member is configured as a spring.

[0014] Optionally, a supporting base is provided at the bottom of the negative pressure device and the drainage box.

[0015] Optionally, rollers are provided at the bottom of the support base.

[0016] Optionally, an armrest is also provided on the support base.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a chest drainage device with anti-backflow function, wherein the negative pressure device is used to generate negative pressure, the drainage box is a container for storing and collecting liquid or gas drained from the patient's body, the connecting pipe is connected to the top of the drainage box for connecting the drainage box with the connecting box, the drainage pipe is connected to the top of the connecting box for guiding the liquid or gas in the patient's body into the drainage box, when drainage is performed, the negative pressure device works, and under the action of negative pressure, the baffle compresses the elastic member downward, so that the sealing block is away from the through hole at the top of the connecting box, so that the liquid or gas in the patient's body passes smoothly into the drainage box, when the negative pressure in the patient's body is too large or the negative pressure machine stops working, the tension of the elastic member causes the slider to drive the sealing block to reset, so that the sealing block is plugged into the through hole, and the baffle is attached to the inner top of the connecting box, thereby preventing backflow. Not only the safety and effectiveness of drainage are improved, but also the risk of complications caused by backflow is reduced, which plays an important role in improving the comfort and recovery speed of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a chest drainage device with an anti-backflow function provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the internal cross-sectional structure of an anti-backflow mechanism in a chest drainage device with an anti-backflow function provided by an embodiment of the utility model;

[0021] Figure 3 A chest drainage device with anti-backflow function provided by an embodiment of the utility model is used to show the overall structural schematic diagram from another perspective;

[0022] Figure 4 A schematic structural diagram for displaying the interior of a drainage box in a chest drainage device with an anti-backflow function provided in an embodiment of the utility model.

[0023] In the figure: 1. negative pressure equipment; 2. drainage box; 21. liquid level sensor; 22. drainage pipe; 23. one-way valve; 3. negative pressure pipe; 4. drainage pipe; 5. anti-backflow mechanism; 50. vertical groove; 51. connecting box; 52. connecting pipe; 53. slider; 54. connecting frame plate; 541. frame body; 542. cross body; 55. sealing block; 550. through hole; 551. first block; 552. second block; 56. elastic member; 6. support base; 61. roller; 62. handrail; 7. display controller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0027] The utility model provides a chest drainage device with anti-backflow function, referring to Figure 1-4, including a negative pressure device 1, a drainage box 2, a negative pressure tube 3 and a drainage tube 4, the surface of the drainage box 2 is connected with the negative pressure tube 3, the other end of the negative pressure tube 3 is connected to the negative pressure device 1, the drainage box 2 is provided with a drainage tube 4, and in addition, an anti-backflow mechanism 5 is provided between the drainage tube 4 and the drainage box 2; the anti-backflow mechanism 5 includes a connecting box 51, a connecting tube 52, a slider 53, a connecting frame plate 54, a sealing block 55 and an elastic member 56, one end of the connecting tube 52 is connected to the connecting box 51, and the other end is connected to the drainage box 2 is connected, two opposite vertical grooves 50 are arranged inside the connection box 51, and sliders 53 are slidably connected in each of the vertical grooves 50. Two sides of the connection frame plate 54 are correspondingly fixed on the sliders 53. The sealing block 55 is installed on the connection frame plate 54. The sealing block 55 corresponds to the position of the through hole 550 connecting the drainage tube 4 and the connection box 51. The elastic member 56 is connected between the slider 53 and the lower wall of the vertical groove 50 to enable the slider 53 to drive the sealing block 55 to block the through hole 550 under the elastic action of the elastic member 56.

[0028] Specifically, refer to Figure 1 , the negative pressure device 1 is the core of the whole system. In this embodiment, the negative pressure device 1 is set as a negative pressure machine, which is responsible for generating the required negative pressure environment, and the negative pressure is transmitted to the drainage box 2 through the negative pressure tube 3. The drainage box 2 is a container for collecting liquid and gas discharged from the patient's body, and the drainage tube 4 is the part directly connected to the chest cavity in the patient's body, responsible for draining the effusion or gas; in order to prevent backflow when the negative pressure device 1 is turned off or the pressure in the patient's body changes, an anti-backflow mechanism 5 is set in the device. When the negative pressure device 1 is running, the negative pressure generated in the drainage box 2 will be transmitted to the connection box 51 through the connecting tube 52, and then act on the sealing block 55. Under the action of negative pressure, the sealing block 55 overcomes the resistance of the elastic member 56 (such as a spring) and moves downward, thereby leaving the through hole 550, allowing the liquid and gas to flow smoothly through the drainage tube 4 into the drainage box 2. Once the negative pressure device 1 stops working, or excessive pressure appears in the patient's body (for example, when the patient coughs), the elastic member 56 will use its restoring force to push the slider 53 upward, so that the sealing block 55 re-seals the through hole 550, thereby effectively preventing the backflow of liquid and gas. In general, this anti-reflux chest drainage device achieves effective drainage through negative pressure suction, and at the same time provides double insurance through a mechanical barrier mechanism to prevent reflux that may cause harm to the patient. This design not only improves the safety and effectiveness of drainage, but also reduces the risk of complications caused by reflux, and plays an important role in improving the patient's comfort and recovery speed.

[0029] Reference Figure 2The connecting frame plate 54 includes a frame body 541 and a cross body 542 disposed inside the frame body 541. The sealing block 55 is fixedly installed at the center of the cross body 542, so as to enhance the overall structural strength and stability of the anti-backflow mechanism 5 and ensure smooth operation. The frame body 541, as the main structural part of the connecting frame plate 54, is made of high-strength and lightweight materials. The cross body 542 is embedded in the frame body 541, and its four arms are evenly distributed on the four sides or four corners of the frame body 541, forming a symmetrical and balanced structure, which not only increases the rigidity of the connecting frame plate 54, but also helps to disperse the force generated during the movement of the slider 53, reduce the pressure on a single component, and extend the service life of the device; the sealing block 55 is installed at the center of the cross body 542. When the slider 53 slides up and down in the vertical groove 50, the connecting frame plate 54 moves accordingly, ensuring that the sealing block 55 can accurately block or leave the through hole 550. Due to the stable support provided by the cross body 542, the movement of the sealing block 55 is more accurate and stable, ensuring the effective execution of the anti-backflow function. When the negative pressure device 1 is working, the negative pressure generated acts on the connecting box 51 through the connecting pipe 52, thereby pushing the sealing block 55 away from the through hole 550, allowing the accumulated fluid or gas to flow smoothly into the drainage box 2 along the drainage tube 4, the frame body 541 and the connecting pipe 52. Once the negative pressure device 1 stops working or the pressure in the patient's body changes, the elastic force of the elastic member 56 will reset the slider 53. The stable structure connecting the frame plate 54 and the cross body 542 ensures that the sealing block 55 can quickly and accurately seal the through hole 550 to prevent the accumulated fluid or gas from flowing back into the patient's body.

[0030] In the present device, the main function of the sealing block 55 is to immediately block the through hole 550 when drainage is not required or reflux is detected, so as to prevent the liquid or gas in the chest cavity from flowing back into the patient's body, thereby avoiding infection or worsening of the condition. The sealing block 55 includes a first block 551 and a second block 552 connected to the lower end of the first block 551. The first block 551 serves as the first line of defense of the sealing system, and has a moderate cross-sectional diameter, which can not only fit closely to the edge of the through hole 550, but also will not affect the sealing effect due to being too large or too small. The design of the second stopper 552 further enhances the sealing effect. Its cross-sectional diameter is larger than that of the first stopper 551, so that an additional barrier can be formed under the through hole 550 to reduce the risk of leakage caused by wear or deformation of the sealing stopper 55; the second stopper 552 is used to strengthen the seal, and the upper surface of the sealing stopper 55 is set in an arc shape, which not only helps to disperse the fluid pressure, reduce local wear on the stopper, and extend its service life, but also can better adapt to the slight curvature change of the edge of the through hole 550, so that the sealing stopper 55 can still maintain good sealing performance even after long-term use. This double sealing strategy greatly improves the reliability of the anti-backflow mechanism 5.

[0031] In terms of material selection, the first stopper 551 and the second stopper 552 are both made of high-quality materials that are wear-resistant and corrosion-resistant. This is because the drainage device often needs to deal with a humid environment that may contain body fluids and bacteria, and the material must be able to resist these potential corrosion factors while withstanding repeated use and cleaning processes.

[0032] Reference Figure 3-Figure 4 The drainage box 2 is provided with a liquid level sensor 21. The liquid level sensor 21 is a sensing device installed inside the drainage box 2. Its main function is to monitor the liquid level or volume in the drainage box 2 in real time. This sensor can use float type, capacitance type, ultrasonic type or optical type and other technical principles to measure the liquid level. For example, the float type sensor relies on the float to change the magnetic force or mechanical linkage with the rise or fall of the liquid level, thereby outputting a liquid level signal; the capacitance type sensor determines the liquid level by detecting the change of the capacitance between the liquid and the sensor; the ultrasonic sensor emits ultrasonic waves and receives its reflected waves, and determines the liquid level by calculating the time difference; the optical sensor detects the liquid level by using the difference in the refractive index of light between different media. When the liquid reaches a specific level or volume, the liquid level sensor 21 will send a signal. The display controller 7 connected to the liquid level sensor 21 and the negative pressure electromechanical is a user interface and control center. It can receive the signal from the liquid level sensor 21 and convert it into visual information, such as numbers or graphics, and display it on the screen. In this way, medical staff can intuitively understand the liquid situation in the drainage box 2. In addition, the drainage box 2 is connected to a drain pipe 22 , and a one-way valve 23 is provided on the drain pipe 22 for only discharging liquid. When the liquid reaches the position of the liquid level sensor 21 , the medical staff can discharge the liquid in the drainage box 2 by opening the one-way valve 23 .

[0033] The elastic member 56 is set as a spring. In order to ensure the durability and stability of the spring, a spring made of rust-proof material is used. The spring made of rust-proof material not only has good corrosion resistance, but also can effectively resist wear and tear, extending the service life of the spring. In practical applications, this spring can meet the high-strength requirements of long-term continuous work and ensure the safe and stable operation of the equipment.

[0034] A support base 6 is provided at the bottom of the negative pressure device 1 and the drainage box 2. A roller 61 is provided at the bottom of the support base 6, so that the entire anti-reflux chest drainage device can be easily moved from one place to another. The roller 61 usually adopts a universal wheel design to adapt to the movement requirements in different directions. An armrest 62 is also provided on the support base 6. Medical staff can easily push or pull the entire device by grabbing the push-pull frame and applying force.

[0035] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A chest drainage device with anti-backflow function, comprising a negative pressure device, a drainage box, a negative pressure tube and a drainage tube, wherein the surface of the drainage box is connected with a negative pressure tube, the other end of the negative pressure tube is connected to the negative pressure device, and the drainage box is provided with a drainage tube, characterized in that: include An anti-backflow mechanism is arranged between the drainage pipe and the drainage box; the anti-backflow mechanism includes a connecting box, a connecting pipe, a slider, a connecting frame plate, a sealing block and an elastic member; one end of the connecting pipe is connected to the connecting box, and the other end is connected to the drainage box; two opposite vertical grooves are arranged inside the connecting box, and sliders are slidably connected in the vertical grooves, and the two sides of the connecting frame plate are correspondingly fixed on the sliders, and the sealing block is installed on the connecting frame plate, and the sealing block corresponds to the position of the through hole connecting the drainage pipe and the connecting box, and the elastic member is connected between the slider and the lower wall of the vertical groove to enable the slider to drive the sealing block to block the through hole under the elastic action of the elastic member.

2. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The connecting frame plate comprises a frame body and a cross body arranged inside the frame body, and the sealing stopper is fixedly installed at the center of the cross body.

3. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The sealing block includes a first block and a second block connected to the lower end of the first block, the second block has a larger cross-sectional diameter than the first block, the first block is used to block the through hole, and the second block is used to strengthen the seal.

4. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The upper surface of the sealing block is arranged in an arc shape.

5. The chest drainage device with anti-backflow function according to claim 1, characterized in that: A liquid level sensor is arranged in the drainage box.

6. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The drainage box is connected with a drainage pipe, and a one-way valve is arranged on the drainage pipe.

7. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The elastic member is configured as a spring.

8. The chest drainage device with anti-backflow function according to claim 1, characterized in that: The bottom of the negative pressure device and the drainage box is provided with a supporting base.

9. The chest drainage device with anti-backflow function according to claim 8, characterized in that: Rollers are arranged at the bottom of the support base.

10. The chest drainage device with anti-backflow function according to claim 8, characterized in that: An armrest is also provided on the support base.

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