Infusion tube plug-in connector

Abstract

The application discloses a transfusion tube plug-in connector, which comprises a transfusion hose and a puncture needle tube, the bottom end of the puncture needle tube is provided with an extension tube in communication with the puncture needle tube, the outer wall of the extension tube is threadedly sleeved with a limiting cylinder, the upper end surface of the limiting cylinder is tightly attached to the bottom end of the puncture needle tube, the transfusion hose is sleeved on the outer wall of the extension tube and extends to the inner cavity of the limiting cylinder, one end of the transfusion hose located in the inner cavity of the limiting cylinder is provided with a sealing end plate, the sealing end plate is tightly attached to the inner cavity wall of the limiting cylinder, and the outer wall of the transfusion hose is slidably provided with a fixing cylinder below the sealing end plate. The transfusion tube plug-in connector disclosed by the application can directly detach the puncture device from the transfusion tube, thereby avoiding the situation that the transfusion tube needs to be cut by scissors and the situation that medical staffs are injured, saving time and effort, facilitating the puncture device splitting work and improving the splitting efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical supplies technology, specifically to an infusion tube plug-in connector. Background Technology

[0002] An infusion tubing is a widely used medical device in medical procedures. It is mainly made of soft plastic and includes a transparent delivery tube, a flow regulator, a needle connector, and a puncture needle that connects to a medicine bottle or infusion bag. It is used to safely, stably, and accurately deliver liquid medications, nutritional solutions, or saline into the patient's body to meet the needs of treatment, fluid replenishment, or maintenance of vital signs, ensuring sterility, smoothness, and controllability during the infusion process.

[0003] However, since most existing disposable IV tubing consists of a single molded piece of puncture device and infusion tubing, after use, to facilitate cleaning and disinfection and prevent personnel injury and cross-infection, tools such as scissors are typically used to separate the puncture device and infusion tubing for separate handling. However, this method of separating the puncture device and infusion tubing is not only time-consuming and labor-intensive but also prone to causing accidental injury to medical personnel. Therefore, those skilled in the art have provided an IV tubing plug-in connector to solve the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide an infusion tube plug-in connector to solve the problems mentioned in the background art.

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

[0006] An infusion tube plug-in connector includes: an infusion tubing and a puncture needle tube. The bottom end of the puncture needle tube is provided with an extension tube communicating with it. A limiting sleeve is threaded onto the outer wall of the extension tube. The upper end face of the limiting sleeve is tightly against the bottom end of the puncture needle tube. The infusion tubing is fitted onto the outer wall of the extension tube and extends into the inner cavity of the limiting sleeve. A sealing end plate is provided at one end of the infusion tubing located in the inner cavity of the limiting sleeve. The sealing end plate is tightly against the inner wall of the limiting sleeve. A fixing sleeve is slidably provided on the outer wall of the infusion tubing located below the sealing end plate. The fixing sleeve is threaded onto the inner wall of the limiting sleeve and is tightly pressed against the lower end face of the sealing end plate.

[0007] Preferably, a sealing gasket is provided on the end face of the sealing end plate, and the sealing end plate is tightly attached to the inner wall of the limiting cylinder through the sealing gasket.

[0008] Preferably, the inner wall of the limiting cylinder is provided with a threaded groove, and the fixing cylinder is threadedly installed in the inner cavity of the limiting cylinder through the threaded groove.

[0009] Preferably, the extension tube is made of an externally threaded tube, and the top of the limiting cylinder is provided with a threaded hole that communicates with its inner cavity. The limiting cylinder is threaded onto the outer wall of the extension tube through the threaded hole and is tightly attached to the bottom end of the puncture needle tube.

[0010] Preferably, the fixing cylinder has a cavity inside, and the fixing cylinder surrounds the outside of the infusion tubing through the cavity. Furthermore, the diameter of the fixing cylinder is the same as the diameter of the sealing end plate.

[0011] Preferably, a limiting end plate is provided at the end of the fixed cylinder away from the sealing end plate, and a sliding hole communicating with the cavity is opened on the end face of the limiting end plate. The fixed cylinder is slidably installed on the outer wall of the infusion tubing through the sliding hole.

[0012] Preferably, the diameter of the limiting end plate is the same as the diameter of the limiting cylinder, and the outer wall of the limiting cylinder is flush with the outer wall of the fixing cylinder.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] By incorporating a fixing sleeve and a limiting sleeve, during use, the extension tube on the puncture needle can be directly inserted into one end of the infusion tubing. The sealing end plate of the infusion tubing extends into the inner cavity of the limiting sleeve and fits tightly against its inner wall. Then, the fixing sleeve on the outer wall of the infusion tubing is screwed in, and through the threaded groove, the fixing sleeve is installed on the inner wall of the limiting sleeve. This allows the fixing sleeve to press firmly against the lower end face of the sealing end plate, defining the position of the infusion tubing. This completes the assembly of the puncture needle and infusion tubing, preventing the infusion tubing from detaching or separating from the puncture needle and improving the stability of the assembly. This design avoids the infusion tubing from becoming detached or separated from the puncture needle, preventing the infusion from being interrupted. It ensures the usability of both the infusion tubing and the puncture needle, making it highly practical. Moreover, after use, the fixing sleeve can be directly unscrewed to remove it from the limiting sleeve, allowing the puncture needle to be removed from the infusion tubing, thus completing the separation of the puncture needle from the infusion tubing. This not only avoids the need to use scissors or other tools to cut the infusion tubing but also prevents accidental injury to medical staff. It saves time and effort and improves the efficiency of disassembling the puncture device on the infusion tubing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly of a puncture needle and an infusion tubing according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram showing the disassembled puncture needle and infusion tubing according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the connection structure between the puncture needle and the infusion tubing according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram showing the disassembled limiting cylinder and puncture needle tube according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram showing the disassembled fixed cylinder and infusion tubing according to an embodiment of the present invention.

[0020] In the diagram: 1. Infusion tubing; 11. Sealing end plate; 111. Sealing gasket; 12. Fixing cylinder; 121. Cavity; 122. Limiting end plate; 123. Sliding hole; 2. Puncture needle tube; 21. Extension tube; 22. Limiting cylinder; 221. Threaded groove; 222. Threaded hole. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0022] Combination Figures 1-4 As shown, the bottom end of the puncture needle tube 2 is provided with an extension tube 21 connected to it. The outer wall of the extension tube 21 is threaded with a limiting sleeve 22. The upper end face of the limiting sleeve 22 is tightly attached to the bottom end of the puncture needle tube 2. The infusion tubing 1 is fitted on the outer wall of the extension tube 21 and extends into the inner cavity of the limiting sleeve 22. Furthermore, a sealing end plate 11 is provided at one end of the infusion tubing 1 located in the inner cavity of the limiting sleeve 22. The sealing end plate 11 is tightly attached to the inner wall of the limiting sleeve 22. A fixing sleeve 12 is slidably provided on the outer wall of the infusion tubing 1 located below the sealing end plate 11. The fixing sleeve 12 is threadedly installed on the inner wall of the limiting sleeve 22 and is tightly pressed against the lower end face of the sealing end plate 11.

[0023] In one embodiment, when assembling the puncture needle tube 2 and the infusion tubing 1, the limiting cylinder 22 can be threaded onto the outer wall of the extension tube 21 (made of externally threaded tubing) through the threaded hole 222, so that the limiting cylinder 22 is tightly against the bottom end of the puncture needle tube 2. Then, the extension tube 21 is inserted into one end of the infusion tubing 1, so that the sealing end plate 11 at the end of the infusion tubing 1 moves to the inner cavity of the limiting cylinder 22 and is tightly against its inner cavity wall. Then, the limiting end plate 122 and the fixing cylinder 12 slide on the outer wall of the infusion tubing 1 through the sliding hole 123 connected to the cavity 121, so that the fixing cylinder 12 slides to the limit. Below the cylinder 22, screw the fixing cylinder 12 to install it on the inner wall of the limiting cylinder 22 through the threaded groove 221, so that the fixing cylinder 12 is pressed tightly against the lower end face of the sealing end plate 11, limiting the position of the sealing end plate 11 and the infusion tubing 1. This completes the assembly of the puncture needle tube 2 and the infusion tubing 1, preventing the infusion tubing 1 from detaching from the puncture needle tube 2, improving the stability of the assembly of the infusion tubing 1 and the puncture needle tube 2, and avoiding the situation where the infusion tubing 1 cannot be infused due to detachment or separation from the puncture needle tube 2, thus ensuring the use of the infusion tubing 1 and the puncture needle tube 2.

[0024] In one embodiment, since a sealing gasket 111 is provided on the end face of the sealing end plate 11, the sealing end plate 11 is tightly attached to the inner wall of the limiting cylinder 22 through the sealing gasket 111. During infusion, the sealing gasket 111 can seal the gap between the sealing end plate 11 and the inner wall of the limiting cylinder 22, preventing gaps from appearing between the inner wall of the limiting cylinder 22 and the sealing end plate 11. This avoids the situation where dust enters the infusion tubing 1 from the gaps between the inner wall of the limiting cylinder 22 and the sealing end plate 11, thus contaminating the medication, and improves the infusion effect.

[0025] In one embodiment, since the diameter of the fixing cylinder 12 is the same as the diameter of the sealing end plate 11, when limiting the infusion tubing 1, the fixing cylinder 12 can be installed on the inner wall of the limiting cylinder 22 through the threaded groove 221, so that the fixing cylinder 12 presses the sealing end plate 11 against the inner wall of the limiting cylinder 22, preventing the infusion tubing 1 from detaching from the puncture needle tube 2, ensuring the stability of the infusion tubing 1 installation. Moreover, when the puncture needle tube 2 and the infusion tubing 1 are not assembled, the position of the fixing cylinder 12 can also be limited by the sealing end plate 11 to prevent the fixing cylinder 12 from detaching from the infusion tubing 1, thereby avoiding the loss of the fixing cylinder 12.

[0026] In one embodiment, since the diameter of the limiting end plate 122 is the same as the diameter of the limiting cylinder 22, and the outer wall of the limiting cylinder 22 is flush with the outer wall of the fixing cylinder 12, when the fixing cylinder 12 is installed inside the limiting cylinder 22, the limiting end plate 122 can be tightly attached to the lower end face of the limiting cylinder 22, and the limiting cylinder 22 can be tightened to prevent the limiting cylinder 22 from shaking on the outer wall of the extension tube 21. This avoids the situation where the infusion tubing 1 becomes loose on the puncture needle tube 2 due to the shaking of the limiting cylinder 22 on the outer wall of the extension tube 21, and further improves the stability of the infusion tubing 1 installation.

[0027] In one embodiment, when separating the puncture needle tube 2 and the infusion tubing 1, the fixing cylinder 12 can be directly twisted to remove it from the limiting cylinder 22. Then, the puncture needle tube 2 can be pulled out to remove the extension tube 21 from the inner cavity of the infusion tubing 1. This completes the separation of the puncture needle tube 2 and the infusion tubing 1, avoiding the need to use scissors or other tools to cut the infusion tube and preventing accidental injury to medical staff. It saves time and effort and facilitates the disassembly of the puncture device.

[0028] The working principle of this utility model is as follows: When using the infusion tubing, the limiting cylinder 22 can be threaded onto the outer wall of the extension tube 21 (made of externally threaded tubing) through the threaded hole 222, so that the limiting cylinder 22 is tightly attached to the bottom end of the puncture needle tube 2. Then, the extension tube 21 is inserted into one end of the infusion tubing 1, so that the sealing end plate 11 at the end of the infusion tubing 1 moves to the inner cavity of the limiting cylinder 22 and is tightly attached to its inner cavity wall. Then, the limiting end plate 122 and the fixing cylinder 12 slide on the outer wall of the infusion tubing 1 through the sliding hole 123 connected to the cavity 121, so that the fixing cylinder 12 is slid to the bottom of the limiting cylinder 22. Then, the fixing cylinder 12 is screwed on, and the fixing cylinder 12 is installed on the inner cavity wall of the limiting cylinder 22 through the threaded groove 221, so that the fixing cylinder 12 is tightly pressed against the lower end face of the sealing end plate 11, limiting the position of the sealing end plate 11 and the infusion tubing 1. This allows for the assembly of the puncture needle 2 and the infusion tubing 1, preventing the infusion tubing 1 from detaching from the puncture needle 2 and improving the stability of the assembly. It avoids situations where the infusion tubing 1 and puncture needle 2 become detached and unable to be used, ensuring the usability of both. Furthermore, after use, the fixing sleeve 12 can be directly unscrewed to remove it from the limiting sleeve 22, and then the puncture needle 2 can be pulled out to remove the extension tube 21 from the inner cavity of the infusion tubing 1. This completes the disassembly of the puncture needle 2 and the infusion tubing 1, avoiding the need to cut the infusion tubing with scissors or other tools, preventing accidental injury to medical personnel, saving time and effort, and improving the efficiency of disassembling the puncture device on the infusion tubing.

[0029] 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 equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An infusion tubing plug-in connector, comprising: An infusion tubing (1) and a puncture needle tube (2) are characterized in that an extension tube (21) is provided at the bottom end of the puncture needle tube (2) and communicates with it. A limiting sleeve (22) is threadedly fitted on the outer wall of the extension tube (21). The upper end face of the limiting sleeve (22) is tightly attached to the bottom end of the puncture needle tube (2). The infusion tubing (1) is fitted on the outer wall of the extension tube (21) and extends to the inner cavity of the limiting sleeve (22). Furthermore, a sealing end plate (11) is provided at one end of the infusion tubing (1) located in the inner cavity of the limiting sleeve (22). The sealing end plate (11) is tightly attached to the inner wall of the limiting sleeve (22). A fixing sleeve (12) is slidably provided on the part of the outer wall of the infusion tubing (1) located below the sealing end plate (11). The fixing sleeve (12) is threadedly installed on the inner wall of the limiting sleeve (22) and tightly pressed against the lower end face of the sealing end plate (11).

2. The infusion tube plug-in connector according to claim 1, characterized in that, The sealing end plate (11) is provided with a sealing gasket (111) on its end face, and the sealing end plate (11) is tightly attached to the inner wall of the limiting cylinder (22) through the sealing gasket (111).

3. The infusion tube plug-in connector according to claim 1, characterized in that, The inner wall of the limiting cylinder (22) is provided with a threaded groove (221), and the fixing cylinder (12) is threadedly installed in the inner cavity of the limiting cylinder (22) through the threaded groove (221).

4. The infusion tube plug-in connector according to claim 1, characterized in that, The extension tube (21) is made of an externally threaded tube. The top end of the limiting cylinder (22) is provided with a threaded hole (222) that communicates with its inner cavity. The limiting cylinder (22) is threaded onto the outer wall of the extension tube (21) through the threaded hole (222) and is tightly attached to the bottom end of the puncture needle tube (2).

5. The infusion tube plug-in connector according to claim 1, characterized in that, The fixed cylinder (12) has a cavity (121) inside. The fixed cylinder (12) surrounds the outside of the infusion tubing (1) through the cavity (121). The diameter of the fixed cylinder (12) is the same as the diameter of the sealing end plate (11).

6. The infusion tube plug-in connector according to claim 5, characterized in that, The fixed cylinder (12) is provided with a limiting end plate (122) at one end away from the sealing end plate (11). The end face of the limiting end plate (122) is provided with a sliding hole (123) that communicates with the cavity (121). The fixed cylinder (12) is slidably installed on the outer wall of the infusion tubing (1) through the sliding hole (123).

7. The infusion tube plug-in connector according to claim 6, characterized in that, The diameter of the limiting end plate (122) is the same as the diameter of the limiting cylinder (22), and the outer wall of the limiting cylinder (22) is flush with the outer wall of the fixing cylinder (12).

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