Pleural effusion drainage device

Abstract

This invention relates to the field of drainage device technology, and more particularly to a pleural effusion drainage device, comprising a drainage bottle, a drainage tube and an aspiration tube installed on the drainage bottle, one end of the aspiration tube communicating with the interior of the drainage bottle, and the other end located outside the drainage bottle, one end of the drainage tube communicating with the interior of the drainage bottle, and the other end connected to a flow guiding device, the flow guiding device comprising a syringe, one end of the syringe having a hollow steel needle communicating with the interior of the syringe, the flow guiding device further comprising a push rod, one end of the push rod having a rubber stopper fixed thereto, the rubber stopper being located inside the syringe and slidably connected to the syringe; the rubber stopper having a first central hole and a structure for controlling the opening and closing of the first central hole; the push rod having a second central hole communicating with the first central hole, and the other end of the drainage tube communicating with the second central hole. This drainage device allows for drug administration and drainage with a single insertion of the hollow steel needle into the body.

Description

Technical Field

[0001] This invention relates to the field of drainage device technology, and more particularly to a pleural effusion drainage device. Background Technology

[0002] Currently, pleural effusion drainage is an effective measure for the treatment of pleural effusion. Among them, the commonly used drainage device is a negative pressure drainage device in the form of a drainage bottle. It has a drainage tube and an air suction tube installed on the drainage bottle. The drainage tube is connected to a syringe, and the syringe has a hollow steel needle that communicates with the inside of the syringe. When in use, the hollow steel needle is inserted into the body to the location of the effusion. The air suction tube is connected to an air pump to draw air from the drainage bottle to generate negative pressure, thereby draining the effusion.

[0003] In practical use, pleural effusions sometimes have a viscous consistency, hindering drainage. In such cases, a syringe or other device is needed to inject medication into the effusion site to reduce its viscosity and facilitate drainage. This method requires at least two devices, each inserted into the body to the location of the effusion, increasing patient discomfort. Research has been ongoing on designing a device that can perform both medication administration and drainage in a single insertion. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pleural effusion drainage device to solve the aforementioned technical problems.

[0005] The technical solution of the present invention is as follows:

[0006] A pleural effusion drainage device includes a drainage bottle with a drainage tube and an aspiration tube installed on it. One end of the aspiration tube communicates with the interior of the drainage bottle, and the other end is located outside the bottle. One end of the drainage tube communicates with the interior of the drainage bottle, and the other end is connected to a flow guiding device. The flow guiding device includes a syringe with a hollow steel needle communicating with the interior of the syringe at one end. The flow guiding device also includes a push rod with a rubber stopper fixed at one end. The rubber stopper is located inside the syringe and slidably connected to the syringe. The rubber stopper has a first central hole and a structure for controlling the opening and closing of the first central hole. The push rod has a second central hole communicating with the first central hole, and the other end of the drainage tube communicates with the second central hole.

[0007] Preferably, the rubber stopper has a side hole circumferentially located outside the first central hole. An elastic sheet is provided on the side of the rubber stopper near the hollow steel needle, which covers the first central hole and the side hole. The elastic sheet has multiple notches circumferentially, and a connecting part is formed between adjacent notches. The end of the connecting part that is not connected to the elastic sheet is connected to the rubber stopper, so that the elastic sheet abuts against the rubber stopper. A baffle is provided on the end of the syringe away from the hollow steel needle. The other end of the push rod passes through the baffle. There is a gap between the baffle and the push rod. A support rod that can be inserted into the side hole is provided on the baffle at the position corresponding to the side hole. The length of the support rod is greater than the length of the side hole.

[0008] Preferably, the elastic sheet is a rubber sheet or a silicone sheet.

[0009] Preferably, the push rod is provided with anti-slip teeth, and the inner side of the baffle is provided with a plurality of anti-slip grooves for accommodating the anti-slip teeth.

[0010] Preferably, the distance from the anti-slip teeth to the rubber stopper is less than or equal to the length of the support rod.

[0011] Preferably, the anti-slip teeth are inclined, and the angle between the side near the rubber stopper and the push rod is less than 90°.

[0012] Preferably, there are multiple anti-slip teeth, and the number of anti-slip grooves is greater than the number of anti-slip teeth.

[0013] Preferably, the drainage tube is detachably connected to the push rod.

[0014] Preferably, the drainage tube is detachably connected to the drainage bottle.

[0015] In use, if the pleural effusion of the patient is viscous, the first central hole can be opened. The end of the suction tube outside the drainage bottle is pre-connected to an air pump. Turning on the air pump will create negative pressure in the drainage bottle. Under the action of negative pressure, the effusion passes through the hollow steel needle, the first central hole, the second central hole, and the drainage tube in sequence to reach the drainage bottle, completing the drainage operation. It can be seen that the hollow steel needle of this drainage device can complete the drug administration and drainage operation with a single insertion into the human body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pleural effusion drainage device in one of the embodiments;

[0017] Figure 2 This is one of the structural schematic diagrams of the flow guiding device;

[0018] Figure 3 for Figure 2 Enlarged view at point A;

[0019] Figure 4 This is a schematic diagram illustrating how the elastic sheet is set up.

[0020] Figure 5 This is the second schematic diagram of the flow guiding device;

[0021] Figure 6 for Figure 5 Enlarged view at point B;

[0022] Figure 7 for Figure 5 Enlarged view at point C;

[0023] In the diagram: 1. Drainage bottle; 2. Drainage tube; 3. Suction tube; 4. Syringe; 5. Hollow steel needle; 6. Push rod; 7. Rubber stopper; 8. First central hole; 9. Side hole; 10. Elastic sheet; 11. Notch; 12. Connecting part; 13. Second central hole; 14. Baffle; 15. Support rod; 16. Anti-slip teeth; 17. Anti-slip groove. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example, refer to Figures 1-4This embodiment is a pleural effusion drainage device, including a drainage bottle 1, on which a drainage tube 2 and an aspiration tube 3 are installed. One end of the aspiration tube is connected to the inside of the drainage bottle, and the other end is located outside the drainage bottle. One end of the drainage tube is connected to the inside of the drainage bottle, and the other end is connected to a flow guiding device. The flow guiding device includes a syringe 4 and a push rod 6. A hollow steel needle 5, which is connected to the inside of the syringe, is installed at one end of the syringe. A rubber stopper 7 is fixed at one end of the push rod. The rubber stopper is located inside the syringe and is slidably connected to the syringe. The rubber stopper is provided with a first central hole 8 and a side hole 9 located circumferentially outside the first central hole. An elastic sheet 10 is provided on the side of the rubber stopper near the hollow steel needle. In this embodiment, the elastic sheet can be a rubber sheet. Alternatively, a silicone sheet may be used. The elastic sheet covers the first central hole and the side hole. The elastic sheet has multiple notches 11 arranged circumferentially, and a connecting part 12 is formed between adjacent notches. The end of the connecting part that is not connected to the elastic sheet is connected to the rubber stopper, so that the elastic sheet abuts against the rubber stopper. The push rod is provided with a second central hole 13 that communicates with the first central hole. The other end of the drainage tube communicates with the second central hole. A baffle 14 is provided at the end of the syringe away from the hollow steel needle. The other end of the push rod passes through the baffle and is connected to the drainage tube. There is a gap between the baffle and the push rod. A support rod 15 that can be inserted into the side hole is provided on the baffle at the position corresponding to the side hole. The length of the support rod is greater than the length of the side hole.

[0026] When using the aforementioned pleural effusion drainage device, if the patient's pleural effusion is viscous, the push rod can be pulled to draw out some medication, and then the push rod can be pushed to inject the medication into the pleural effusion site to reduce its viscosity. Then, the push rod is pulled until the support column is inserted into the side hole, lifting the elastic plate. At this time, the notch is connected to the first central hole. The end of the suction tube outside the drainage bottle is pre-connected to an air pump. Turning on the air pump will create negative pressure in the drainage bottle. Under the action of negative pressure, the effusion passes sequentially through the hollow steel needle, the notch, the first central hole, the second central hole, and the drainage tube to reach the drainage bottle, completing the drainage operation. It can be seen that this drainage device can complete the medication and drainage operation with a single insertion of the hollow steel needle into the human body.

[0027] As a preferred implementation method, see [link to relevant documentation]. Figures 5-7The push rod is provided with anti-slip teeth 16, and the inner side of the baffle is provided with multiple anti-slip grooves 17 for accommodating the anti-slip teeth. Preferably, the distance from the anti-slip teeth to the rubber stopper is less than or equal to the length of the support rod. In this embodiment, the anti-slip teeth are preferably inclined, with the angle between the side near the rubber stopper and the push rod being less than 90°. There can be one or more anti-slip teeth, and the number of anti-slip grooves is greater than the number of anti-slip teeth. Thus, when the push rod is pulled, as the support rod passes through the side hole and pushes open the elastic sheet, the anti-slip teeth can sequentially enter the anti-slip grooves, preventing the push rod from moving in the opposite direction and causing the first central hole to become blocked again. This structure also effectively prevents unscrupulous individuals from recycling and reusing the product, avoiding the risk of cross-infection among patients. Furthermore, the anti-slip teeth entering different anti-slip grooves allow the support rod to pass through the side hole at different lengths, resulting in different sizes of notch deformation, facilitating graded adjustment of the drainage speed to suit the patient's physical condition.

[0028] In a preferred embodiment, the drainage tube and the push rod are detachably connected; alternatively, the drainage tube and the drainage bottle can be detachably connected, typically using a plug-in connection. This allows for easy separation of the syringe and push rod, enabling the drainage bottle to be cleaned and reused, saving resources. Furthermore, when the fluid accumulation is small and non-viscous, the syringe and push rod can directly draw out the fluid, making it more convenient. Of course, when the fluid accumulation is small and non-viscous, the drainage device can also be used directly, eliminating the need for drawing and injecting medication.

[0029] It should be noted that the above embodiments are merely illustrative examples of this application and are not intended to limit this application. For example, other flow guiding devices may be used, and the opening and closing of the first central hole may be controlled by other structures, as long as the purpose of this invention can be achieved.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pleural effusion drainage device, comprising a drainage bottle (1), wherein a drainage tube (2) and an aspiration tube (3) are installed on the drainage bottle, one end of the aspiration tube is connected to the interior of the drainage bottle, and the other end is located outside the drainage bottle; one end of the drainage tube is connected to the interior of the drainage bottle, and the other end is connected to a flow guiding device; the flow guiding device comprises a syringe (4), one end of which is fitted with a hollow steel needle (5) communicating with the interior of the syringe, characterized in that: The flow guiding device also includes a push rod (6), one end of which is fixed with a rubber stopper (7), the rubber stopper being located inside the syringe and slidably connected to the syringe; The rubber stopper is provided with a first central hole (8) and a structure for controlling the opening and closing of the first central hole; The push rod is provided with a second central hole (13) that communicates with the first central hole, and the other end of the drainage tube is connected to the second central hole; The rubber stopper is provided with a side hole (9) located outside the first central hole in the circumferential direction. An elastic sheet (10) is provided on the side of the rubber stopper near the hollow steel needle. The elastic sheet covers the first central hole and the side hole. The elastic sheet is provided with a plurality of notches (11) in the circumferential direction. A connecting part (12) is formed between adjacent notches. The end of the connecting part that is not connected to the elastic sheet is connected to the rubber stopper, so that the elastic sheet abuts against the rubber stopper. A baffle (14) is provided at one end of the syringe away from the hollow steel needle. The other end of the push rod passes through the baffle. There is a gap between the baffle and the push rod. A support rod (15) that can be inserted into the side hole is provided on the baffle at the position corresponding to the side hole. The length of the support rod is greater than the length of the side hole. The elastic sheet is a rubber sheet or a silicone sheet.

2. The pleural effusion drainage device according to claim 1, characterized in that: The push rod is provided with anti-slip teeth (16), and the inner side of the baffle is provided with multiple anti-slip grooves (17) for accommodating the anti-slip teeth.

3. The pleural effusion drainage device according to claim 2, characterized in that: The distance from the anti-slip teeth to the rubber stopper is less than or equal to the length of the support rod.

4. The pleural effusion drainage device according to claim 2, characterized in that: The anti-slip teeth are inclined, and the angle between the side near the rubber stopper and the push rod is less than 90°.

5. A pleural effusion drainage device according to claim 2, characterized in that: There are multiple anti-slip teeth, and the number of anti-slip grooves is greater than the number of anti-slip teeth.

6. The pleural effusion drainage device according to claim 1, characterized in that: The drainage tube is detachably connected to the push rod.

7. A pleural effusion drainage device according to claim 1, characterized in that: The drainage tube is detachably connected to the drainage bottle.

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