A kind of plug-in connector
By designing a plum blossom-shaped connector, and utilizing the bonding and fixing of long strip connecting strips and adhesive pads, as well as the snap-fit structure of the insertion slot, the problem of medical connectors loosening and detaching under external force is solved, achieving connection stability and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU K L F MEDICAL PLASTICS CO LTD
- Filing Date
- 2025-03-07
- Publication Date
- 2026-06-26
AI Technical Summary
Existing medical connectors are prone to loosening and detachment under external force, leading to fluid leakage and cross-infection risks. Furthermore, reconnection is cumbersome and time-consuming, affecting medical efficiency.
Design a plum blossom-shaped connector, which uses a long strip connecting the connector body to fix it. The two ends of the connecting strip are equipped with adhesive tabs, which are bonded to the tube body with adhesive layer. The connection stability is enhanced by the combination of plug groove and snap-fit structure.
It effectively prevents the connector from loosening and detaching from the tube body, improves connection stability, reduces the risk of fluid leakage, simplifies connection operations, and improves medical work efficiency.
Smart Images

Figure CN224404180U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, specifically to a plum blossom-shaped connector. Background Technology
[0002] There are various types of medical connectors on the market, among which a common type is the elongated medical connector, widely used in scenarios such as infusion tubing connections and drainage device connections. As shown in Figure 1, one end of this medical connector is designed with a gradually decreasing diameter structure. This diameter-changing design is intended to accommodate tubes of different diameters, facilitating insertion and establishing a preliminary connection. The other end has a insertion slot to receive the insertion of another tube. In actual use, the connection between the connector and the tube mainly relies on the pre-tightening force formed between them. When the variable-diameter part of the connector is inserted into the tube, and another tube is inserted into the insertion slot of the connector, due to the deformation capacity of the tube material itself, the tube and the inner wall of the connector are in close contact during insertion, generating friction. This friction serves as the pre-tightening force, keeping them in a seemingly stable connection state.
[0003] However, in medical practice, this connection method has revealed serious flaws. On the one hand, during patients' daily activities, such as turning over, sitting up, and walking, the various medical tubing connected to them inevitably gets pulled, and these external forces directly affect the connection between the medical connector and the tubing. On the other hand, medical staff may also unintentionally apply external forces to the connection during the operation of medical devices, equipment movement, or replacement of consumables. Under these pulling forces, the connection balance maintained by the pre-tightening force between the tubing and the connector is easily broken. Due to the limited stability of the pre-tightening force, once subjected to an external force exceeding a certain threshold, the tubing will shift relative to the connector, leading to loosening and detachment. This not only causes fluid leakage, affecting the treatment process such as drug infusion and body fluid drainage, delaying patient recovery, but may also cause cross-infection risks due to leaked liquid contaminating the surrounding environment, posing a potential threat to patients' lives and health. In addition, the reconnection operation after loosening is cumbersome and time-consuming, reducing medical work efficiency and increasing the workload of medical staff. Therefore, there is an urgent need to develop a medical connector that can effectively overcome the above problems and has higher connection stability. Summary of the Invention
[0004] In view of the problems pointed out in the background art, this utility model proposes a plum blossom-shaped connector to solve the above-mentioned technical problems.
[0005] The technical solution of this utility model is implemented as follows:
[0006] A plum blossom-shaped connector includes a connector body and an elongated connecting strip. The middle part of the connecting strip is fixedly connected to the connector body. The length of the connecting strip is greater than the length of the connector body. Adhesive pieces are provided at both ends of the connecting strip.
[0007] The present invention is further provided that the adhesive sheet has an adhesive layer, and the adhesive layer has a removable release film layer.
[0008] The present invention is further configured such that the adhesive sheet and the connecting strip are integrally formed.
[0009] The present invention is further configured such that the adhesive sheet is elongated and is perpendicular to the connecting strip.
[0010] The present invention is further configured such that the adhesive sheet and the connecting strip are made of plastic film or plastic sheet.
[0011] The present invention is further configured such that a fluid channel is provided at the center of the connector body, one end of the connector body is configured with a gradually decreasing outer diameter, and the other end of the connector body is provided with an annular insertion groove.
[0012] The present invention is further provided that the side wall of the insertion slot is provided with a protruding annular snap-fit part.
[0013] The present invention is further configured such that the connector body on the inner side of the insertion slot has a protruding insertion part, the outer diameter of the insertion part is smaller than the inner diameter of the insertion slot, and a sealing ring is fitted on the insertion part.
[0014] The present invention is further configured such that an annular rim is provided on the outer side wall of the other end of the connector body, and the rim is provided with a slot for the connecting strip to pass through.
[0015] By adopting the above technical solution, the beneficial effects of this utility model are as follows:
[0016] The plum blossom-shaped connector provided by this utility model has adhesive tabs at both ends of the connector after it is plugged into the pipeline or equipment. These tabs are then bonded and fixed to the pipeline or equipment. This further enhances the stability of the connection between the connector and the pipeline or equipment and prevents the connector from loosening and detaching due to pulling. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the existing technology.
[0019] Figure 2 This is a schematic diagram of the structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the structure of this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of this utility model.
[0022] The following are the labels in the attached diagram: 1. Connector body; 2. Fluid channel; 3. Connecting strip; 4. Adhesive piece; 5. Insertion slot; 6. Snap-fit part; 7. Insertion part; 8. Sealing ring; 9. Edge; 10. Slot. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] For reference as follows Figures 1-4 The present invention will be described as follows:
[0025] Example: A plum blossom-shaped connector includes an elongated connector body 1, with a fluid channel 2 at its center. The fluid channel 2 is the key channel for the entire connector to function, ensuring that various fluids such as medications, bodily fluids, and gases can be smoothly, stably, and accurately transferred from one end of the tube to the other. During medical treatment, it ensures the continuity and accuracy of operations such as infusion, drainage, and gas delivery, and does not allow any blockage, leakage, or unstable flow.
[0026] It also includes a long, narrow connecting strip 3, whose middle section is fixedly connected to the connector body 1, ensuring that the two form an organic whole. The length of the connecting strip 3 is greater than the length of the connector body 1. After the connector body 1 is inserted into the tube, the connecting strip 3, with its extra length, can extend to the outer part of the tube, reinforcing the connection between the tube and the connector over a wider coverage area. Adhesive tabs 4 are provided at both ends of the connecting strip 3. After the connector body 1 is accurately inserted into the tube according to the standard procedure, the connecting strip 3 is initially in place, and the adhesive tabs 4 then come into play. They adhere tightly to the surface of the tube, forming a strong adhesive relationship through their inherent adhesive properties. This adhesive force, combined with the insertion friction between the connector body 1 and the tube, forms a double layer of protection. In everyday medical settings, whether it's a patient's unintentional limb movements, such as a slight turning over or a slow raising of the hand, or the routine touching and moving of tubing by medical staff during nursing care or equipment adjustments, the adhesive pad 4 ensures that the connection between the tubing and the connector remains tight at all times, completely eliminating the problem of loosening or detachment caused by external pulling, and ensuring the safe and orderly progress of the medical process.
[0027] The adhesive patch 4 has an adhesive layer, and a removable release film layer is provided on the adhesive layer. When the adhesive patch 4 is needed, medical staff only need to gently peel off the release film layer to quickly and conveniently apply the adhesive patch 4 to the tube connection reinforcement operation, which greatly improves the ease of use and reduces the risk of damage to the adhesive layer due to improper operation.
[0028] The adhesive pad 4 and the connecting strip 3 are integrated into one piece. This integrated molding simplifies the production process, reduces assembly steps between parts, lowers production costs, and improves production efficiency, ensuring product quality stability during large-scale industrial production. The integrated design eliminates gaps or weak points between the adhesive pad 4 and the connecting strip 3, allowing them to work together more efficiently to withstand external forces.
[0029] The adhesive piece 4 is long and narrow, and is set perpendicular to the connecting strip 3.
[0030] The adhesive pad 4 and the connecting strip 3 are made of plastic film or plastic sheet. The plastic material has excellent flexibility, and whether in the process of connector assembly or in actual medical use scenarios, the adhesive pad 4 and the connecting strip 3 can easily adapt to various bending and twisting operations without breaking or damaging due to excessive rigidity, thus ensuring the service life of the product.
[0031] One end of the connector body 1 has a gradually decreasing outer diameter (this reducing end allows for a smooth transition when connecting to tubes with different inner diameters), and the other end has an annular insertion groove 5. The side wall of the insertion groove 5 has a protruding annular snap-fit portion 6. When the tube is inserted into the insertion groove 5, its inner side wall has a snap-fit groove corresponding to the snap-fit portion 6. This snap-fit structure greatly enhances the connection stability between the tube and the connector body 1. After the tube is fully inserted, the snap-fit portion 6 is tightly embedded in the snap-fit groove of the tube, forming a mechanical interlock, effectively preventing the tube from accidentally coming out due to external pulling.
[0032] The connector body 1 inside the insertion slot 5 has a protruding insertion part 7. The outer diameter of the insertion part 7 is smaller than the inner diameter of the insertion slot 5. This design creates conditions for subsequent sealing. A sealing ring 8 is fitted onto the insertion part 7. When the tube is inserted, the inner diameter of the insertion end of the tube changes to a certain extent. Usually, the inner diameter is larger near the opening to facilitate insertion. After insertion, the insertion part 7 can accurately insert into the smaller inner diameter part of the tube, and a tight sealing fit is achieved with the help of the sealing ring 8.
[0033] The outer side wall of the other end of the connector body 1 is provided with an annular rim 9, and the rim 9 is provided with a slot 10 for the connecting strip 3 to pass through.
[0034] The connecting strip 3 is elongated, longer than the connector body 1. It is fixedly connected to the connector body 1 in the middle, and has adhesive tabs 4 at both ends, which are integrally formed with the connecting strip 3. This integrated design not only simplifies the manufacturing process and reduces production costs, but more importantly, during use, the connecting strip 3 and adhesive tabs 4 function as a tightly integrated unit. After the connector body 1 is initially inserted into the tube, the connecting strip 3, due to its length advantage, extends to the outside of the tube. The adhesive tabs 4 at both ends have an adhesive layer, and the adhesive layer has a removable release film layer. When preparing to reinforce the connection, medical personnel remove the release film layer and tightly adhere the adhesive tabs 4 to the surface of the tube. The adhesive layer's adhesion further constrains the tube from the outside, forming a double-layer protection with the internal snap-fit structure of the connector body 1, effectively resisting external forces from damaging the connection between the tube and the connector.
[0035] The adhesive patch 4 and connecting strip 3 are made of plastic film or sheet, a material choice that fully considers the complexity of the medical environment and the requirements of use. The plastic material has good flexibility, ensuring that the connecting strip 3 will not easily break during deformation under stress. The adhesive patch 4 can adapt to slight bending of the tube body when adhering to it, ensuring that the adhesion effect is not affected. At the same time, the chemical inertness of the plastic material ensures that it will not undergo chemical reactions when in contact with medical fluids, pharmaceuticals, or when exposed to the medical environment for extended periods, avoiding adverse effects on the medical process, such as fluid contamination or corrosion of its own structure, thus ensuring the long-term reliability and safety of the connector.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quincunx connector, comprising a connector body, characterized in that: It also includes a long strip connecting bar, the middle of which is fixedly connected to the connector body. The length of the connecting bar is greater than the length of the connector body, and adhesive pads are provided at both ends of the connecting bar.
2. The plum blossom-shaped connector according to claim 1, characterized in that: The adhesive sheet has an adhesive layer, and the adhesive layer has a removable release film layer.
3. A plum blossom-shaped connector according to claim 2, characterized in that: The adhesive patch and the connecting strip are integrated into one piece.
4. A plum blossom-shaped connector according to claim 2, characterized in that: The adhesive strip is long and narrow, and is positioned perpendicular to the connecting strip.
5. A quincunx connector according to claim 3, characterized in that: The adhesive strip and connecting strip are made of plastic film or plastic sheet.
6. A quincunx connector according to claim 1, characterized in that: The connector body has a fluid channel at its center, one end of the connector body has a gradually decreasing outer diameter, and the other end of the connector body has an annular insertion groove.
7. A quincunx connector according to claim 6, characterized in that: The side wall of the insertion slot is provided with a protruding annular snap-fit part.
8. A quincunx connector according to claim 7, characterized in that: The connector body inside the insertion slot has a protruding insertion part. The outer diameter of the insertion part is smaller than the inner diameter of the insertion slot, and a sealing ring is fitted on the insertion part.
9. A quincunx connector according to claim 6, characterized in that: The other end of the connector body has an annular rim on its outer side wall, and the rim has a slot for the connecting strip to pass through.