Negative pressure drainage kit

Abstract

The utility model relates to a negative pressure drainage kit, belongs to the technical field of medical equipment, and solves the problems that in the prior art, when the negative pressure drainage kit is used, multiple times of insertion and extraction are needed for dosing, the infection risk exists, and the sealing performance and the connection reliability of the negative pressure drainage kit become poor. The drainage device comprises a guide needle, a guide wire, a drainage tube and a connecting tube, the guide needle, the guide wire, the drainage tube and the connecting tube are sequentially connected in series; a drainage channel and a dosing channel are arranged in the drainage tube; a drainage interface and a dosing interface are arranged in the connecting tube; a water supply and blockage removal end and a dosing end are arranged outside the connecting pipe; the water supply and blockage removal end is communicated with the drainage channel through the drainage connector, and the drug delivery end is communicated with the drug delivery channel through the drug delivery connector. According to the utility model, the drainage end and the dosing end can be integrated by the connecting tube, and the integration of drainage and medicine injection functions is realized.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a negative pressure drainage kit. Background Technology

[0002] Currently, negative pressure drainage kits are frequently used in surgery to drain gastric fluid or other surgical waste from patients. During use, a guide needle is inserted directly into the area requiring drainage, and the waste is aspirated using negative pressure. In practice, medication may sometimes be administered to the patient. This often requires removing the negative pressure drainage kit and closing the drainage port. The kit is then reinserted after medication is administered. This process is inconvenient, as repeated insertion and removal increases the risk of infection and compromises the sealing and connection reliability of the negative pressure drainage kit, while also causing inconvenience for medical staff. Utility Model Content

[0003] Based on the above analysis, the present invention aims to provide a negative pressure drainage kit to solve the problems of repeated insertion and removal during drug administration, which poses an infection risk and degrades the sealing and connection reliability of the negative pressure drainage kit.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] A negative pressure drainage kit includes a guide needle, a guide wire, a drainage tube, and a connecting tube;

[0006] The guide needle, the guide wire, the drainage tube, and the connecting tube are connected in series.

[0007] The drainage tube is provided with a drainage channel and a drug delivery channel inside; the connecting tube is provided with a drainage interface and a drug delivery interface inside; the connecting tube is provided with a water supply and drainage end and a drug delivery end outside; the water supply and drainage end is connected to the drainage channel through the drainage interface, and the drug delivery end is connected to the drug delivery channel through the drug delivery interface.

[0008] Furthermore, the drug delivery channel is a circular straight channel; the drainage channel is an arc-shaped channel; the maximum diameter of the arc-shaped channel is the same as the inner diameter of the drainage tube.

[0009] Furthermore, both the water supply drain end and the drug delivery end are provided with a spiral cap, and the end face of the spiral cap is provided with a rubber valve.

[0010] Furthermore, a flow regulating clamp, which is a butterfly valve, is provided near the end of the water supply drain end and the dosing end.

[0011] Furthermore, the guide needle and the guide wire are used to guide the drainage tube into the human body.

[0012] Furthermore, it also includes a negative pressure ball, which is connected to the drainage channel of the drainage tube through the connecting tube for negative pressure drainage.

[0013] Furthermore, the negative pressure ball is also equipped with a filter device, which is located at the inlet where the negative pressure ball connects to the connecting pipe.

[0014] Furthermore, it also includes a drainage bag; the drainage bag is connected to the negative pressure ball.

[0015] Furthermore, both the drainage tube and the drainage bag are equipped with anti-backflow valves.

[0016] Furthermore, the drainage channel portion of the drainage tube has multiple side holes evenly distributed on its sidewall to increase the drainage area.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) Compared with the prior art, the connecting tube of this utility model integrates the drainage end and the drug administration end, realizing the integration of drainage and drug injection functions. No additional pipe connection is required, reducing operation steps and infection risk, and improving treatment efficiency and convenience.

[0019] (2) The drainage section and the drug administration end of this utility model are set separately, making full use of the internal space of the connecting tube and the drainage tube. The drug administration channel adopts a circular straight channel to avoid drug residue. The drainage channel adopts an arc-shaped pipe. In order to maximize the flow rate of the drainage section, the maximum diameter of the arc-shaped pipe is the same as the inner diameter of the pipe.

[0020] (3) The filter device at the inlet of the negative pressure ball of this utility model can filter impurities in the drainage fluid, preventing impurities from entering the negative pressure ball and affecting its negative pressure performance and service life, thus ensuring the stable operation of the device and the drainage effect. The drainage tube and drainage bag are respectively equipped with anti-backflow valves to effectively prevent the drainage fluid from flowing back and reduce the infection rate.

[0021] (4) The drainage channel of the drainage tube of this utility model has multiple side holes evenly distributed on the side wall of the tube body, arranged in a spiral shape, which increases the drainage area and prevents blockage.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the negative pressure drainage kit in a specific embodiment;

[0025] Figure 2 This is a schematic diagram of the drainage tube in a specific embodiment;

[0026] Figure 3 This is a schematic diagram of the connecting pipe in a specific embodiment.

[0027] Figure label:

[0028] 1-Guide needle, 2-Guide wire, 3-Drainage tube, 31-Drainage channel, 32-Administration channel, 4-Connecting tube, 41-Administration connector, 42-Drainage connector, 43-Administration end, 44-Water supply drain end, 5-Negative pressure ball, 51-Filter device, 6-Drainage bag. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0030] A specific embodiment of this utility model is as follows: Figure 1 As shown, a negative pressure drainage kit is disclosed, including a guide needle 1, a guide wire 2, a drainage tube 3, and a connecting tube 4.

[0031] The guide needle 1 and guide wire 2, together with the drainage tube 3, are inserted into the human body to serve as a catheter. The guide needle 1 punctures the tissue for catheter placement, while the guide wire 2 acts as a reinforcing agent to facilitate catheter placement through the surgical channel. The guide needle 1 and guide wire 2 are made of medical-grade stainless steel, which has good rigidity and biocompatibility, ensuring that they are not easily bent during puncture and have minimal tissue irritation.

[0032] The drainage tube 3 is made of medical-grade silicone, which is soft and elastic, reducing friction and pressure on tissues and alleviating patient discomfort. The tube body has good biocompatibility and corrosion resistance, allowing it to remain in the body for extended periods. The proximal end of the drainage tube 3 is connected to the guide needle 1, and the distal end is connected to the connecting tube 4. It forms a drainage system by sequentially connecting to the connecting tube 4, the negative pressure bulb 5, and the drainage bag 6.

[0033] A backflow prevention valve is installed at one end of the drainage tube 3 near the connecting tube 4. It is a one-way silicone valve structure that allows liquid to flow unidirectionally to the connecting tube 4, preventing the drainage fluid from flowing back into the body and causing infection.

[0034] The drainage tube 3 has a drainage channel 31 and a drug delivery channel 32 arranged side by side inside. The drainage channel 31 and the drug delivery channel 32 extend throughout the entire length of the drainage tube 3. The drug delivery channel 32 is a straight circular channel to reduce drug residue in the channel. To make full use of the space inside the drainage tube 3, the drainage channel 31 is arc-shaped, and the maximum diameter of the arc is the maximum diameter of the tube.

[0035] The drainage channel 31 of the drainage tube 3 has multiple side holes evenly distributed on the side wall of the tube body, arranged in a spiral shape, to increase the drainage area and prevent blockage.

[0036] The connecting tube 4 is made of medical-grade transparent polyurethane material, which has good flexibility and transparency, making it easy to observe the flow of liquid inside the tube and the drug injection process.

[0037] The connecting tube 4 is externally equipped with a water supply and drain end 44 and a drug delivery end 43. Internally, the connecting tube 4 is equipped with a drug delivery connector 41 and a drainage connector 42 corresponding to the drainage channel 31 and drug delivery channel 32. The water supply and drain end 44 on the connecting tube 4 is connected to the drainage channel 31 via the drainage connector 42, allowing for intravenous fluid injection or draining of the drainage channel 31. The drug delivery end 43 on the connecting tube 4 is connected to the drug delivery channel 32 via the drug delivery connector 41, allowing for irrigation and drug delivery to surgical sites (such as postoperative irrigation, postoperative drug delivery, and administration of anesthetic after tube removal).

[0038] The water supply drain end 44 and the drug delivery end 43 are extensions of the connecting pipe 4. Both ends of the water supply drain end 44 and the drug delivery end 43 have a spiral cap structure, with a rubber valve on the end face of the spiral cap to seal the port. When water or drug is to be injected, the center of the valve is opened using the syringe needle for injection.

[0039] The water supply drain end 44 and the dosing end 43 are equipped with flow regulating clamps near their ends, which can precisely control the flow rate. The flow regulating clamps are butterfly valves, which are easy to operate and can lock the flow rate.

[0040] Furthermore, it also includes a negative pressure bulb 5. The bulb 5 is made of medical-grade rubber material, possessing good elasticity and sealing properties, and can be repeatedly squeezed and used. The negative pressure bulb 5 is connected to the drainage channel 31 of the drainage tube 3 via the connecting tube 4, serving as a negative pressure drainage device. The bulb is marked with graduations for easy observation of the drainage fluid volume. An exhaust valve is located at the top of the bulb; it is a one-way valve that automatically closes when the bulb is squeezed to prevent gas from entering; when the bulb is released, outside air can slowly enter to balance the internal pressure, facilitating the removal of the drainage device. A filter device is installed at the inlet where the negative pressure bulb 5 connects to the connecting tube 4 to prevent impurities in the drainage fluid from entering the negative pressure bulb 5; the filter device uses a medical-grade microporous membrane.

[0041] Furthermore, it also includes a drainage bag 6. The drainage bag 6 is connected to the negative pressure bulb 5 and serves to collect the drainage fluid. The main body of the drainage bag 6 is made of medical-grade polyethylene material, which is lightweight, durable, and has good sealing properties. The suspension component is made of high-strength plastic material, which can withstand a certain weight and is easy to hang beside the hospital bed. The drainage bag 6 is designed to be flat with an arc-shaped bottom, which facilitates the collection and drainage of drainage fluid.

[0042] During use, medical staff first insert the guide needle 1 into the area requiring drainage, then insert the drainage tube 3 along the guide needle 1 to the appropriate depth, remove the guide needle 1, and securely connect the drainage tube 3 to the connecting tube 4, ensuring a good seal. The drainage end of the connecting tube 4 is connected to a negative pressure bulb 5. After squeezing the negative pressure bulb 5 to expel internal air, the exhaust valve is closed, creating negative pressure inside the bulb. Under this negative pressure, accumulated fluid and blood are drawn into the negative pressure bulb 5 through the drainage tube 3 and connecting tube 4. When the drainage fluid in the negative pressure bulb 5 reaches a certain volume, the exhaust valve can be opened to drain the drainage fluid into the drainage bag 6. If medication flushing or injection is required, a syringe can be connected to the medication delivery end 43 of the connecting tube 4 to slowly inject the medication into the body. Throughout the drainage process, the drainage speed can be controlled using a flow regulating clamp and adjusted according to the patient's condition and the drainage situation.

[0043] Compared to existing technologies, in this embodiment, the water supply drain end 44 and the drug delivery end 43 are set separately, making full use of the internal space of the connecting pipe 4 and the drainage pipe 3. The drug delivery channel 32 adopts a circular straight channel to avoid drug residue, and the drainage channel 31 adopts an arc-shaped pipe. To ensure maximum flow in the drainage channel 31, the maximum diameter of the arc-shaped pipe is the same as the inner diameter of the pipe. The connecting pipe 4 integrates the drainage end and the drug delivery end 43, realizing the integration of drainage and drug injection functions, eliminating the need for additional pipe connections, reducing operation steps and infection risks, and improving treatment efficiency and convenience.

[0044] Both the drainage tube 3 and the drainage bag 6 are equipped with anti-backflow valves to effectively prevent backflow of the drainage fluid and reduce the incidence of infection. The filter device 51 at the inlet of the negative pressure ball 5 can filter impurities in the drainage fluid, preventing impurities from entering the negative pressure ball 5 and affecting its negative pressure performance and service life, thus ensuring the stable operation of the device and the drainage effect.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure drainage kit, characterized in that, It includes a guide needle (1), a guide wire (2), a drainage tube (3), and a connecting tube (4); The guide needle (1), the guide wire (2), the drainage tube (3), and the connecting tube (4) are connected in series. The drainage tube (3) is provided with a drainage channel (31) and a drug delivery channel (32) inside; the connecting tube (4) is provided with a drug delivery interface (41) and a drainage interface (42) inside; the connecting tube (4) is provided with a drug delivery end (43) and a water supply and drain end (44) outside; the water supply and drain end (44) is connected to the drainage channel (31) through the drainage interface (42), and the drug delivery end (43) is connected to the drug delivery channel (32) through the drug delivery interface (41).

2. The negative pressure drainage kit according to claim 1, characterized in that, The drug delivery channel (32) is a circular straight channel; the drainage channel (31) is an arc-shaped channel; the maximum diameter of the arc-shaped channel is the same as the inner diameter of the drainage tube (3).

3. The negative pressure drainage kit according to claim 1, characterized in that, Both the drug delivery end (43) and the water supply drain end (44) are provided with a spiral cap, and the end face of the spiral cap is provided with a rubber valve.

4. The negative pressure drainage kit according to claim 3, characterized in that, The dosing end (43) and the water supply drain end (44) are provided with flow regulating clips near their ends, and the flow regulating clips are butterfly valves.

5. The negative pressure drainage kit according to claim 1, characterized in that, The guide needle (1) and the guide wire (2) are used to guide the drainage tube (3) into the human body.

6. The negative pressure drainage kit according to claim 1, characterized in that, It also includes a negative pressure ball (5); the negative pressure ball (5) is connected to the drainage channel (31) of the drainage tube (3) through the connecting tube (4); the negative pressure ball (5) is used for negative pressure drainage.

7. The negative pressure drainage kit according to claim 6, characterized in that, The negative pressure ball is also equipped with a filter device (51), which is located at the inlet where the negative pressure ball (5) connects to the connecting pipe (4).

8. The negative pressure drainage kit according to claim 6, characterized in that, It also includes a drainage bag (6); the drainage bag (6) is connected to the negative pressure ball (5).

9. The negative pressure drainage kit according to claim 8, characterized in that, The drainage tube (3) and the drainage bag (6) are respectively equipped with anti-backflow valves.

10. The negative pressure drainage kit according to claim 1, characterized in that, The drainage channel (31) portion of the drainage tube (3) has multiple side holes evenly distributed on the side wall of the tube body.

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