Split double-lumen drainage catheter

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a split double -cavity drainage catheter, include: drainage tube, the one end of drainage tube is provided with drainage drainage port and flushing port, and drainage tube is formed drainage channel and flushing channel respectively from one end to the other end, and drainage channel is linked with drainage drainage port, and flushing channel and flushing port are linked, double -cave joint is set up in the end of drainage tube far from puncture hole, and double -cave joint is provided with cavity, and the inlet of cavity is communicated with flushing channel, flushing pipe, one end is connected in the cavity inside of double -cave joint, and is communicated with flushing channel. The utility model on one hand has solved the problem that the existing drainage catheter is punctured, because puncture hole and drainage hole share a hole position, thereby leading to blood infection, on the other hand has solved the problem that the integrated design double -cavity drainage catheter is used for puncture hole and drainage hole simultaneously, because its larger joint size, thereby leading to its unable to pass through drainage hole smoothly.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a split double-lumen drainage catheter. Background Technology

[0002] External ventricular drainage (EVD) is a common neurosurgical procedure, primarily used for draining cerebral hemorrhage and cerebrospinal fluid. There are two existing drainage methods: one where the puncture site and drainage hole share the same location, a simple design; and another where the puncture site and drainage hole are located in different positions, a design that helps reduce the risk of infection because fluid and blood are less likely to adhere to the surface of the drainage tube.

[0003] However, current drainage catheters that share a single port for both the puncture and drainage sites may allow blood or other fluids to adhere to the catheter surface, increasing the risk of infection. On the other hand, dual-lumen drainage catheters with separate puncture and drainage sites, due to their integrated design and large connector size, often cannot pass smoothly through the drainage site. Therefore, a new dual-lumen drainage catheter design is urgently needed. Utility Model Content

[0004] The purpose of this invention is to provide a split double-lumen drainage catheter that can reduce the risk of blood infection while allowing the drainage hole to pass smoothly.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A split-type double-lumen drainage catheter, comprising:

[0007] A drainage tube is provided at one end with a drainage outlet and a flushing outlet. The drainage tube extends from one end to the other to form a drainage channel and a flushing channel, respectively. The drainage channel is connected to the drainage outlet, and the flushing channel is connected to the flushing outlet.

[0008] A double-lumen connector is located at the end of the drainage tube away from the puncture hole, and the double-lumen connector is provided with a cavity that communicates with the inlet of the flushing channel;

[0009] The flushing tube is connected at one end to the cavity of the double-chamber connector and communicates with the flushing channel.

[0010] The drainage tube penetrates the puncture hole, and the flushing tube works in conjunction with the drainage tube to complete the drainage through the pressure difference between the inside and outside.

[0011] Furthermore, the dual-cavity connector has a groove inside, which accommodates the connection end of the flushing tube.

[0012] Furthermore, it also includes Luer connectors, which are respectively connected to the ends of the flushing tube and the drainage tube away from the puncture hole.

[0013] Furthermore, it also includes: flow-stopping clamps, which are respectively clamped on the walls of the flushing pipe and the drainage pipe to control the drainage.

[0014] Furthermore, a drainage tube scale is provided on the wall of the drainage tube to indicate the depth of the drainage tube inserted into the patient's skull.

[0015] Furthermore, the length of the drainage channel is greater than that of the flushing channel, and the diameter of the drainage outlet is greater than that of the flushing outlet.

[0016] Furthermore, a plurality of flushing ports are linearly arrayed along the axis of the drainage tube.

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

[0018] This invention utilizes a dual-lumen connector to connect a drainage tube and a flushing tube separately, thereby completing the drainage operation. Specifically, the drainage tube contains two parts: a drainage channel and a flushing channel. The drainage channel is connected to a drainage outlet located at the end of the drainage tube near the puncture site. One end of the flushing channel communicates with the flushing port, and the other end connects to the cavity of the dual-lumen connector. The cavity then accommodates the flushing tube, connecting the flushing tube and the flushing channel, thus completing the assembly of the device. This split design overcomes the limitations of existing integrated dual-lumen drainage tubes, which are too large to be suitable for separate puncture and drainage sites. It allows for the initial insertion of a single drainage tube into the drainage site, followed by the assembly of the flushing tube. Furthermore, its suitability for separate puncture and drainage sites reduces the risk of infection due to blood adhering to the catheter. Attached Figure Description

[0019] Figure 1 This is a front view of the present utility model;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a side sectional view of the channel of this utility model;

[0022] Figure 4 This is a cross-sectional view of the drainage tube portion of this utility model;

[0023] Figure 5 This is a cross-sectional view of the flushing pipe of this utility model.

[0024] In the diagram: 1. Drainage tube; 10. Drainage outlet; 11. Flushing port; 12. Drainage tube scale; 13. Drainage channel; 14. Flushing channel; 2. Double-lumen connector; 20. Connecting part; 21. Slot; 3. Flushing tube; 30. Connecting end; 4. Stop clamp; 5. Luer connector; 50. First Luer connector; 51. Second Luer connector. Detailed Implementation

[0025] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0026] like Figures 1-5 In this embodiment, it includes: a drainage tube 1, a double-lumen connector 2, and a flushing tube 3, wherein the double-lumen connector 2 is connected to the flushing tube 3 respectively;

[0027] The end of the drainage tube 1 near the puncture hole is provided with a drainage outlet 10 and a flushing outlet 11. One end of the drainage tube 1 extends to the other end to form a drainage channel 13 and a flushing channel 14 respectively. The drainage channel 13 is connected to the drainage outlet 10, and the flushing channel 14 is connected to the flushing outlet 11.

[0028] Specifically, during drainage, the drainage channel 13 drains the fluid to a specific location through the drainage outlet 10, or the fluid enters the drainage channel 13 through the drainage outlet 10. Simultaneously, medication within the flushing channel 14 is delivered to the flushing port 11, resolving obstructions to drainage caused by blood clots or blood. Because the independent drainage channel is connected to the drainage outlet, it can more effectively drain blood and exudate from the body, ensuring smooth drainage and preventing blood accumulation. Blood accumulation provides a good culture medium for bacteria, easily leading to infection; effective drainage reduces this risk. Furthermore, the dedicated flushing channel and flushing port allow for regular flushing of the drainage tube and surrounding tissues. Flushing promptly removes blood, tissue debris, and other substances adhering to the surface and surrounding tissues, reducing the sites for bacterial adhesion and growth, thereby lowering the infection rate. Additionally, the detachable design facilitates individual replacement and cleaning of the drainage tube and flushing tube. If contamination or blockage is found in the drainage tube or flushing tube during use, the corresponding parts can be easily disassembled for replacement or cleaning and disinfection. Compared with the integrated design, it can more thoroughly remove dirt and bacteria and reduce the source of infection.

[0029] The double-lumen connector 2 is located at the end of the drainage tube 1 away from the puncture hole, and the double-lumen connector 2 is provided with a cavity that is connected to the inlet of the flushing channel 14.

[0030] Specifically, the purpose of setting up the cavity is to facilitate the delivery of drugs through the cavity to the flushing channel 14. At the same time, because the flushing channel 14 and the drainage channel 13 are not connected, it ensures that the channels will not interfere with each other.

[0031] One end of the flushing pipe 3 is connected to the inside of the cavity of the double-chamber connector 2 and communicates with the flushing channel 14;

[0032] Specifically, during drainage, the medication enters through the flushing tube 3, is delivered through the flushing channel 14, and finally reaches the drainage site through the flushing port 11;

[0033] After the puncture is completed, the drainage tube 1 is first passed through the puncture hole. After reaching the designated position, the subcutaneous tunneling needle enters through the puncture hole and moves along the subcutaneous tissue. When it reaches the designated position, the subcutaneous tunneling needle is passed out. The exit position is the drainage hole. After passing out, the puncture hole is sutured. After suturing, one end of the irrigation tube 3 is connected to the cavity of the double-lumen connector 2, so that it is connected to the irrigation channel 14. After connection, drainage begins. During drainage, the drainage channel 13 delivers cerebrospinal fluid to the designated position. At the same time, due to the function of the irrigation channel 14, the medication can enter from the irrigation tube 3 and be delivered to the required target location.

[0034] In this embodiment, a Luer connector 5 and a flow stop clamp 4 are also included;

[0035] Among them, the Luer connector 5 is respectively set at the ends of the drainage tube 1 and the flushing tube 3 away from the puncture hole;

[0036] It should be noted that the first Luer connector 50 is connected to the drainage tube 1, and the second Luer connector 51 is connected to the flushing tube 3;

[0037] Specifically, when it is necessary to drain cerebrospinal fluid from the body, Luer connector 5 is connected, and Luer connector 5 is then connected to an external device to drain the fluid through the pressure difference between the inside and outside.

[0038] Among them, the flow stop clamp 4 is clamped on the pipe wall of the flushing pipe 3 and the drainage pipe 1 respectively;

[0039] Specifically, the flow stop clamp 4 controls the flow of liquid or stops the flow, ensuring timely drainage or flushing of liquid.

[0040] In this embodiment, the inside of the double-cavity connector 2 is provided with a slot 21, and the inside of the slot 21 accommodates the connection end 30 of the flushing pipe 3;

[0041] It should be noted that the double-cavity connector 2 consists of a connecting part 20 and a cavity. The cavity is equipped with a slot 21 to ensure that the flushing pipe 3 can be securely connected to the drainage pipe 1. In order to enhance the stability of the connection, the slot is a raised slot, which can play a role in locking when the pipe is inserted, increasing the tensile strength and ensuring that the connection between the two pipes is more secure.

[0042] In this embodiment, a drainage tube scale 12 is provided on the wall of the drainage tube 1 to display the depth of the drainage tube 1 after it is inserted into the cranium.

[0043] In this embodiment, the materials of the dual-lumen connector 2 and the flushing tube 3 are medical elastic materials, such as silicone or polyurethane, to facilitate the connection between the two.

[0044] In this embodiment, the length of the drainage channel 13 is greater than that of the flushing channel 14, and the diameter of the drainage outlet 10 is greater than that of the flushing outlet 11.

[0045] In this embodiment, two flushing ports 11 are arranged linearly along the axis of the drainage tube 1.

[0046] Installation steps:

[0047] (1) Puncture and drainage tube insertion: After the puncture is completed, the drainage tube 1 is inserted through the puncture hole to reach the designated position in the body.

[0048] (2) Subcutaneous tunneling: A subcutaneous tunneling needle is inserted through the puncture site, moved along the subcutaneous tissue, and then exited at the designated location, which is the drainage hole. The puncture site is then sutured.

[0049] (3) Flushing tube connection: Connect one end of the flushing tube 3 to the cavity of the double-lumen connector 2. The double-lumen connector 2 is located at the end of the drainage tube 1 away from the puncture hole.

[0050] (4) Installation of Luer connector and stop clamp: A Luer connector 5 is installed at the end of the drainage tube 1 away from the puncture hole for subsequent connection of external devices to drain cerebrospinal fluid; a stop clamp 4 is clamped on the walls of the flushing tube 3 and the drainage tube 1 respectively to control the flow of liquid or stop the flow.

[0051] Working principle:

[0052] During drainage, the drainage channel 13 drains the cerebrospinal fluid in the body to a specific location through the drainage port 10; if it is necessary to drain the cerebrospinal fluid out of the body, the fluid enters the drainage channel 13 through the drainage port 10, connects to the Luer connector 5 and connects to the external device, and drains the fluid by using the pressure difference between the inside and outside.

[0053] At the same time, the flushing channel 14 plays its role. The medication enters from the flushing tube 3, passes through the cavity of the double-lumen connector 2 into the flushing channel 14, and finally acts on the drainage site through the flushing port 11 to resolve the obstruction to drainage caused by blood clots or blood.

[0054] 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 embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the 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 split-type double-lumen drainage catheter, characterized in that, include: A drainage tube (1) is provided with a drainage outlet (10) and a flushing outlet (11) at one end. The drainage tube (1) extends from one end to the other end to form a drainage channel (13) and a flushing channel (14) respectively. The drainage channel (13) is connected to the drainage outlet (10), and the flushing channel (14) is connected to the flushing outlet (11). A double-lumen connector (2) is provided at the end of the drainage tube (1) away from the puncture hole, and the double-lumen connector (2) is provided with a cavity that is connected to the inlet of the flushing channel (14); The flushing tube (3) is connected at one end to the cavity of the double-chamber connector (2) and communicates with the flushing channel (14); The drainage tube (1) penetrates the puncture hole, and the flushing tube (3) works in conjunction with the drainage tube (1) to complete the drainage through the pressure difference between the inside and outside.

2. The split-type double-lumen drainage catheter according to claim 1, characterized in that, The double-cavity connector (2) has a slot (21) inside, which accommodates the connection end (30) of the flushing pipe (3).

3. The split-type double-lumen drainage catheter according to claim 2, characterized in that, It also includes a Luer connector (5), which is connected to the ends of the flushing tube (3) and the drainage tube (1) away from the puncture hole.

4. The split-type double-lumen drainage catheter according to claim 3, characterized in that, Also includes: The flow stop clamp (4) is clamped on the walls of the flushing pipe (3) and the drainage pipe (1) respectively, and is used to control the drainage.

5. The split-type double-lumen drainage catheter according to claim 1, characterized in that, A drainage tube scale (12) is provided on the wall of the drainage tube (1).

6. The split-type double-lumen drainage catheter according to claim 1, characterized in that, The length of the drainage channel (13) is greater than that of the flushing channel (14), and the diameter of the drainage outlet (10) is greater than that of the flushing outlet (11).

7. The split-type double-lumen drainage catheter according to claim 5, characterized in that, Along the axis of the drainage tube (1), a plurality of flushing ports (11) are arranged in a linear array.

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