Negative pressure puncture drainage device
The negative pressure puncture drainage device uses siphon or gravity to achieve automatic drainage of effusion, solving the problems of cumbersome operation and infection risk in the prior art, and achieving safe, stable and efficient drainage of effusion.
Patent Information
- Application Number
- CN202510524657.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2025-06-13
AI Technical Summary
Existing puncture drainage devices are difficult to drain through gravity autonomously when dealing with viscous or pus, which is complicated to operate and has a risk of infection, especially when dealing with large amounts of fluid, the syringe capacity is often limited and blocked.
A negative pressure puncture drainage device is designed to generate siphon or gravity through the negative pressure device to realize automatic suction and drainage of fluid, avoid the risks of air contact and infection, and ensure the safety and stability of the drainage process through the flow rate regulator and a one-way valve.
It realizes automatic, safe and stable drainage of effusion, with unlimited capacity, avoids the risks of blockage and infection, simplifies the operation process, and improves efficiency.
Smart Images
Figure CN120132090A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a device for extracting postoperative effusion, belonging to the field of medical instruments, and particularly relates to a negative pressure puncture drainage device. Background Art
[0002] Puncture drainage is a medical supply used to drain various effusions and gases in body cavities out of the body. The existing puncture drainage is either steel needle puncture drainage or catheter drainage. Medical staff need to use a steel needle or catheter to extract body cavity effusion, generally by gravity drainage, which requires relying on the self-gravity of the liquid to drain it out of the body to achieve the treatment purpose. However, it is found in clinical applications that there are the following defects: viscous body fluids or pus cannot drain out of the body autonomously by gravity, and it is necessary to use a syringe to extract or first inject drugs into the syringe to dilute the liquid and then extract it with a syringe. Due to the limited capacity of the syringe, after reaching the maximum carrying capacity, the liquid in the syringe needs to be emptied and then extracted. The process is cumbersome. When encountering tuberculosis patients' body fluids, it will also increase the infection risk for medical staff, and each time when reconnecting the syringe, it will also increase the infection risk for patients. Currently, the syringe extraction method for extracting effusion has a small syringe capacity. When extracting several thousand milliliters of effusion, it needs to be extracted multiple times, which is rather cumbersome, and the exposure of the port to the air increases the risk of infection. In addition, when the effusion is relatively viscous, it is not easy to extract with a syringe; when using a needle to connect a drainage bag for extraction, the drainage bag has a large enough capacity, but blockage is likely to occur during the extraction process, and the effusion cannot be extracted autonomously. Summary of the Invention
[0003] In order to solve the above problems, the present invention designs a negative pressure closed drainage device with a simple structure and can be punctured. This device can automatically extract effusion, has an unlimited capacity, is safe and stable, and is not prone to blockage during the extraction process.
[0004] In order to achieve the above object, the present invention is realized through the following technical solutions:
[0005] A negative pressure puncture drainage device, including a drainage tube 1, a drainage tube 3, a flow rate regulator 4, a drainage tube 7, and a liquid storage bag 8. The drainage tube is connected to the liquid storage bag 8. The flow rate regulator 4 is fixedly arranged around the drainage tube 7. Its characteristics are that: the negative pressure puncture drainage device is provided with a negative pressure device 5. An internal one-way valve 6 is arranged at the upper end inside the negative pressure device 5. The negative pressure puncture drainage device is provided with an external one-way valve 12. The upper end of the negative pressure device 5 is connected to the lower end of the drainage tube 3. The lower end of the negative pressure device 5 is connected to the external one-way valve 12. The external one-way valve 12 is connected to the upper end of the drainage tube 7 through a Luer connector. The lower end of the drainage tube 7 is connected to the liquid storage bag 8. When the negative pressure device 5 is squeezed, the effusion will be automatically sucked into the drainage tube 3. After the effusion enters the negative pressure device 5, due to siphon or gravity, the external one-way valve 12 automatically opens, and the effusion continues to flow along the drainage tube 7 until it enters the liquid storage bag 8.
[0006] The drainage device is also provided with a three-way interface 2. The upper end of the three-way interface 2 is connected to the lower end of the drainage tube 1, and the lower end of the three-way interface 2 is connected to the upper end of the drainage tube 3 through a luer interface.
[0007] The three-way interface 2 is provided with a side port 11, and the side port 11 can extract the effusion sample or input the medicine. The drainage device is also provided with a three-way specific switch 13, and the switch can be rotated and adjusted to communicate or block the drainage tube cavity. When the switch 13 is adjusted to the position communicating with the side port 11, the medicine can be input into the drainage tube 1 through the side port 11 and then enter the body or the effusion can be sampled, avoiding the disconnection of the drainage channel and contact with air.
[0008] The negative pressure device 5 is provided with a pneumatic pressure regulating valve 9, and the valve can be opened to appropriately adjust the air pressure in the ball.
[0009] The negative pressure device 5 is provided with a hanging buckle 10, which is convenient for fixing the negative pressure device.
[0010] The liquid flow direction of the built-in one-way valve 6 of the negative pressure device 5 is closed to the body cavity and opened to the cavity of the negative pressure device 5. The liquid flow direction of the external one-way valve 12 connected to the outside of the negative pressure device 5 is closed to the negative pressure device 5 and opened to the liquid storage bag 8. By squeezing the negative pressure device 5, the air inside the negative pressure device is exhausted outward, and the negative pressure is generated by the restoration of the state of the negative pressure device 5 to suck the liquid from the body cavity and finally reach the liquid storage bag 8. The whole process of the effusion from the body cavity to the liquid storage bag 8 is in a closed state, avoiding the occurrence of infection. Due to the function of the negative pressure device, this operation can be carried out by one person.
[0011] Advantageous effects: The present invention can assist medical staff to quickly and effectively extract effusion. The extraction of effusion can be automatically carried out, and the capacity is unlimited. It is safe and stable, and it is not easy to be blocked during the extraction process. At the same time, because of the closed drainage, the contact with air is avoided, and the risk of contact between the effusion and medical staff is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 : Schematic illustration of the present application Figure 1 ;
[0013] Figure 2 : Schematic illustration of the present application Figure 2 ;
[0014] Figure 3 : Schematic illustration of the present application Figure 3 ;
[0015] Figure 4 : Schematic illustration of the present application Figure 4 .
[0016] 1 - Drainage tube; 2 - Three-way connector; 3 - Drainage tube; 4 - Flow rate regulator; 5 - Negative pressure device; 6 - Built-in one-way valve; 7 - Drainage tube; 8 - Liquid storage bag; 9 - Air pressure regulating valve; 10 - Hanging buckle; 11 - Side port of three-way connector; 12 - External one-way valve; 13 - Specific three-way switch. Detailed implementation
[0017] A negative pressure puncture drainage device includes a drainage tube 1, a drainage tube 3, a flow rate regulator 4, a drainage tube 7, and a liquid storage bag 8. The drainage tube is connected to the liquid storage bag 8, and the flow rate regulator 4 is fixedly arranged around the drainage tube 7. It is characterized in that: the negative pressure puncture drainage device is provided with a negative pressure device 5, an upper end inside the negative pressure device 5 is provided with a built-in one-way valve 6, the negative pressure puncture drainage device is provided with an external one-way valve 12, an upper end of the negative pressure device 5 is connected to a lower end of the drainage tube 3, a lower end of the negative pressure device 5 is connected to the external one-way valve 12, the external one-way valve 12 is connected to an upper end of the drainage tube 7 through a Luer interface, and a lower end of the drainage tube 7 is connected to the liquid storage bag 8. When the negative pressure device 5 is squeezed, the effusion will be automatically sucked into the drainage tube 3. After the effusion enters the negative pressure device 5, due to siphon or gravity, the external one-way valve 12 will automatically open, and the effusion will continue to flow along the drainage tube 7 until it enters the liquid storage bag 8.
[0018] The drainage device is further provided with a three-way connector 2. An upper end of the three-way connector 2 is connected to a lower end of the drainage tube 1, and a lower end of the three-way connector 2 is connected to an upper end of the drainage tube 3 through a Luer interface.
[0019] The three-way connector 2 is provided with a side port 11, and the side port 11 can be used to extract an effusion sample or input a medicament. The drainage device is further provided with a specific three-way switch 13. The switch can be rotated and adjusted to communicate or block the drainage tube cavity. When the switch 13 is adjusted to the position communicating with the side port 11, the drug can be input into the drainage tube 1 through the side port 11 and then enter the body or an effusion sample can be taken, avoiding the disconnection of the drainage channel and contact with air.
[0020] The negative pressure device 5 is provided with an air pressure regulating valve 9, and the valve can be opened to appropriately adjust the air pressure inside the sphere.
[0021] The negative pressure device 5 is provided with a hanging buckle 10, which is convenient for fixing the negative pressure device.
[0022] According to the body cavity part and the need for indwelling drainage, it is determined whether the front section is a puncture needle or a catheter to be inserted into the patient's body. After puncture, the internal air is discharged by squeezing the negative pressure device, thereby generating negative pressure. The liquid passes through the puncture needle or the drainage tube and enters the negative pressure device 5 through the built-in one-way valve 6. After entering the negative pressure device 5, it automatically flows into the liquid storage bag 8 by gravity and siphon effect. Due to the existence of the built-in one-way valve 6 and the external one-way valve 12, the drained liquid can only flow from the body cavity to the liquid storage bag unidirectionally and will not flow back. The whole process is transparent and airtight, protecting medical staff and patients.
[0023] The present invention can assist medical staff in quickly and effectively extracting effusion. The extraction of effusion can be automatically carried out, with no limit on the volume, safe and stable. Due to the function of the negative pressure device, the extraction process is smoother and not easily blocked.
Claims
1. A negative pressure puncture drainage device, comprising a drainage tube (1), a drainage tube (3), a flow rate regulator (4), a drainage tube (7), and a liquid storage bag (8), wherein the drainage tube is connected to the liquid storage bag (8), and the flow rate regulator (4) is fixed around the drainage tube (7), characterized in that: The negative pressure puncture drainage device is provided with a negative pressure device (5), the upper end of the negative pressure device (5) is provided with a built-in one-way valve (6), the negative pressure puncture drainage device is provided with an external one-way valve (12), the upper end of the negative pressure device (5) is connected to the lower end of the drainage tube (3), the lower end of the negative pressure device (5) is connected to the external one-way valve (12), the external one-way valve (12) is connected to the upper end of the drainage tube (7) through a Luer interface, and the lower end of the drainage tube (7) is connected to the liquid storage bag (8), when the negative pressure device (5) is squeezed, the accumulated fluid is automatically sucked into the drainage tube (3), after the accumulated fluid enters the negative pressure device (5), the external one-way valve (12) is automatically opened due to siphoning or gravity, and the accumulated fluid continues to flow along the drainage tube (7) until it enters the liquid storage bag (8).
2. The negative pressure puncture drainage device according to claim 1, characterized in that: The liquid flow direction of the built-in one-way valve (6) of the negative pressure device (5) is closed toward the body cavity and opened toward the negative pressure device (5) cavity. The liquid flow direction of the external one-way valve (12) connected to the negative pressure device (5) is closed toward the negative pressure device (5) and opened toward the liquid storage bag (8). The air in the negative pressure device is discharged to the outside by squeezing the negative pressure device (5). The negative pressure device (5) is restored to its state to generate negative pressure to attract liquid from the body cavity and finally reach the liquid storage bag (8).
3. The negative pressure puncture drainage device according to claim 1, characterized in that: The drainage device is also provided with a three-way interface (2), the upper end of the three-way interface (2) is connected to the lower end of the drainage tube (1), and the lower end of the three-way interface (2) is connected to the upper end of the drainage tube (3) via a Luer interface.
4. The negative pressure puncture drainage device according to claim 3, characterized in that: The side port (11) of the three-way interface (2) can be used to extract effusion samples or to infuse medicines.
5. The negative pressure puncture drainage device according to claim 3, characterized in that: The three-way interface (2) is provided with a three-way specific switch (13), and the switch (13) can be rotated and adjusted to achieve dredging or sealing with the drainage tube cavity.
6. The negative pressure puncture drainage device according to claim 1, characterized in that: The negative pressure device (5) is provided with an air pressure regulating valve (9) and a suspension buckle (10).