Anti-infusion device falling-off device
By incorporating anti-detachment devices for adjusting clamps, kits, and connectors into the infusion set, and utilizing adsorption magnetic blocks and engaging toothed groove structures, the problem of easy detachment between the bottle stopper puncture device and the infusion bottle opening is solved, achieving stable fixation of the infusion set and continuity of treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI NO 2 PEOPLES HOSPITAL
- Filing Date
- 2025-04-09
- Publication Date
- 2026-06-09
AI Technical Summary
In existing infusion sets, the stopper puncture device is prone to detaching from the infusion bottle opening, leading to an increased risk of contamination and affecting the continuity of treatment.
An anti-drop device, including adjusting clamps, kits, and connectors, is adopted. It utilizes adsorption magnetic blocks and a locking toothed groove structure, and achieves stable fixation of the infusion set through the snapping of a semi-locking ring and the cooperation of a positioning pin.
This effectively prevents the stopper puncture device from detaching from the infusion bottle opening, improving the continuity of treatment and ease of operation, and reducing the risk of dislodgement.
Smart Images

Figure CN224331302U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of infusion set fixing technology, and in particular relates to a device to prevent infusion sets from falling off. Background Technology
[0002] An infusion set is a common medical consumable, mainly used for intravenous infusion to establish a channel between the vein and the medication. It generally consists of eight parts: an intravenous needle or injection needle, a needle cap, an infusion tubing, a medication filter, a flow regulator, a drip chamber, a stopper puncture device, and an air filter. Some infusion sets also have injection ports and medication dispensing ports.
[0003] Currently, traditional infusion systems primarily consist of a stopper and a trocar connected directly to the infusion bottle via friction, relying on gravity for drug delivery. However, this design has a significant structural flaw: its fixation relies entirely on physical friction between the trocar and the bottle opening. In clinical use, changes in patient position (such as turning over or limb movement) can easily cause the trocar to detach from the bottle opening. This risk is particularly high in pediatric patients due to their greater mobility and lower cooperation. Once detachment occurs, the exposed trocar may come into contact with contaminants, necessitating a complete replacement of the infusion set according to clinical practice. This directly wastes medical resources and increases the repetitive workload for nursing staff. This design flaw not only affects treatment continuity but also poses a potential threat to infection control.
[0004] In summary, existing infusion sets have the problem that the stopper puncture device can easily detach from the infusion bottle opening, leading to contamination and affecting the continuity of treatment. Utility Model Content
[0005] This invention provides a device to prevent infusion sets from falling off, which can solve the problem in the prior art where the bottle stopper puncture device easily detaches from the infusion bottle mouth, causing contamination and affecting the continuity of treatment.
[0006] To achieve the above objectives, an anti-dislodgement device for an infusion set is provided according to an embodiment of the first aspect of the present invention, including a fixing device disposed on the infusion set;
[0007] The fixing device includes an adjusting clamp, a kit, and a connector;
[0008] The top surface of the connector is fixedly equipped with a clip, and the side surface is provided with a locking groove;
[0009] The kit includes a first half-clamp and a second half-clamp. The end of the first half-clamp is fixedly sleeved on the post of the pin, and the second half-clamp is movably disposed on the post of the pin.
[0010] The adjusting clamp includes a clamping seat and a locking element disposed on the edge of one side surface of the clamping seat. The clamping seat has a clamping body on the side away from the locking element, and the clamping seat has a through-hole for mounting groove on the side near the locking element. The connecting element is movably inserted into the mounting groove, and the engaging tooth groove on the side engages with the locking element.
[0011] A further improvement is that an adsorption magnetic block is fixedly embedded at the ends of both the first and second half-rings.
[0012] A further improvement is that an installation notch is provided at the end of the second half-ring, and the second half-ring is movably locked onto the post of the pin through the installation notch.
[0013] A further improvement is that the inner side of the card is provided with a card block that engages with the toothed groove.
[0014] A further improvement is that the card bends upward on the side away from the card block.
[0015] A further improvement is that a mounting hole is provided through one side of the clamping base, and a positioning pin is provided in the mounting hole.
[0016] A further improvement is that the connector has several positioning holes sequentially formed from top to bottom on the side of the positioning pin.
[0017] A further improvement is that the card and the mounting base are integrated and both are made of ABS plastic.
[0018] A further improvement is that the connector is made of ABS plastic.
[0019] A further improvement is that all the kits are made of ABS plastic.
[0020] Compared with the prior art, the beneficial effects of this utility model are:
[0021] (1) This utility model achieves a stable connection of the kit on the mouth of the dripping bottle by first locking the first half of the kit onto one half of the bottle opening. Then, the second half of the kit is rotated to lock the second half of the bottle opening onto the other half of the bottle opening. At this time, the magnetic adsorption block at the second half of the kit is connected to the magnetic adsorption block at the first half of the kit, thereby achieving a stable connection of the kit on the mouth of the dripping bottle.
[0022] (2) This utility model allows the adjusting clamp to slide onto the connector to a suitable position by moving the bent part of the clamp, and then the infusion tubing is clamped at the narrowest point inside the clamping body. When the clamp is released, the locking block on the inside of the clamp will lock into the locking tooth groove on the side of the connector, thereby fixing the entire infusion set and effectively preventing the bottle stopper puncture device from detaching from the infusion bottle mouth, making operation more convenient and improving the continuity of treatment. In addition, after the clamp and connector are connected, the positioning pin and positioning hole can be engaged to prevent the adjusting clamp from falling off due to wear, further improving its clamping and fixing effect and enhancing its practicality. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the entire fixing device structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the adjusting clamp structure of this utility model;
[0025] Figure 3 This is a schematic diagram of the connector and kit structure of this utility model.
[0026] Marked in the image:
[0027] 1. Adjusting clamp; 11. Mounting slot; 12. Clip; 13. Clamping seat; 14. Clamping notch; 15. Positioning pin;
[0028] 2. Connector; 21. Engaging tooth groove; 22. Clip; 23. Positioning hole;
[0029] 3. Kit; 31. Half-clamp ring one; 32. Half-clamp ring two; 321. Mounting notch; 33. Adsorption magnet. Detailed Implementation
[0030] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] like Figure 1 As shown, an anti-dislodgement device for infusion sets includes:
[0032] Fixing device, installed on the infusion set;
[0033] Specifically, the fixing device includes an adjusting clamp 1, a kit 3, and a connector 2. The adjusting clamp 1, kit 3, and connector 2 are all made of ABS plastic, which has a certain degree of elasticity and is easy to operate and use.
[0034] The top surface of the connector 2 is fixedly equipped with a clip 22, and the side surface is provided with a locking tooth groove 21;
[0035] The kit 3 includes a first half-clamp ring 31 and a second half-clamp ring 32. The end of the first half-clamp ring 31 is fixedly sleeved on the post of the pin 22. The end of the second half-clamp ring 32 has an installation notch 321. The second half-clamp ring 32 is movably locked on the post of the pin 22 through the installation notch 321 for rotation, so as to facilitate the installation on the dripper.
[0036] As a preferred embodiment, both the first half-clamp ring 31 and the second half-clamp ring 32 are fixedly embedded with an adsorption magnetic block 33. The adsorption magnetic block 33 is used to assist the first half-clamp ring 31 and the second half-clamp ring 32 in adsorption, prevent the kit from falling off, and further improve the anti-detachment effect.
[0037] The adjusting clamp 1 includes a clamping base 13 and a locking member 12 disposed on the edge of one side surface of the clamping base 13. The clamping base 13 is provided with a clamping body 14 on the side away from the locking member 12. The clamping body 14 is flared outward in an arc shape on the side away from the locking member 12. The clamping base 13 is provided with a through mounting groove 11 on the side close to the locking member 12. The connecting member 2 is movably inserted into the mounting groove 11. The engaging tooth groove 21 on the side and the locking member 12 are engaged.
[0038] Specifically, the inner side of the locking piece 12 is provided with a locking block 121 that engages with the locking groove 21 for locking and positioning the locking piece 12. The side of the locking piece 12 away from the locking block 121 is bent upwards, making it easier to move the locking piece 12 to disengage the locking block 121 from the locking groove 21. The adjusting clamp 1 can be removed or its position adjusted. By moving the bent part of the locking piece 12, the adjusting clamp 1 can be slid onto the connecting piece 2 to a suitable position. Then, the infusion tubing is secured at its narrowest point within the clamping body 14. When the locking piece is released, the locking block 121 on the inner side of the locking piece 12 will engage in the locking groove 21 on the side of the connecting piece 2, thus fixing the entire infusion set. This effectively prevents the bottle stopper puncture device from detaching from the infusion bottle opening, making operation more convenient and improving the continuity of treatment.
[0039] As a preferred embodiment, a mounting hole is provided through one side of the clamping base 13, and a positioning pin 15 is provided in the mounting hole. The connector 2 has a number of positioning holes 23 sequentially opened from top to bottom on the side of the positioning pin 15. After the clamping member 12 and the connector 2 are connected, the positioning pin 15 and the positioning holes 23 are then inserted to effectively prevent the adjusting clamp 1 from falling off after wear, and further improve the performance of the adjusting clamp 1.
[0040] like Figures 1 to 3As shown in this embodiment, it should also be noted that the infusion set has a mounting point for the fitting kit 3 at the drip bottle opening. The actual dimensions of each component in the application document should be selected for installation based on actual site requirements. Additionally, it should be noted that this application document only addresses the shortcomings of existing infusion sets where the stopper puncture device easily detaches from the infusion bottle opening, leading to contamination and affecting treatment continuity; it does not involve other aspects. The working principle of this anti-infusion set detachment device is described below:
[0041] When using this new solution, after hanging up the infusion set, medical staff first attach the first half-clamping ring 31 from kit 3 to one half of the drip bottle opening. Then, they rotate the second half-clamping ring 32 to attach it to the other half of the drip bottle opening. At this point, the magnetic adsorption block 33 at the end of the second half-clamping ring 32 adheres to the magnetic adsorption block 33 of the first half-clamping ring 31, thereby achieving a stable connection of kit 3 to the drip bottle opening.
[0042] Next, adjust the bent part of the clamp 12 according to actual needs, allowing the adjusting clamp 1 to slide onto the connector 2 to a suitable position. Then, clamp the infusion tubing into the narrowest part of the clamping body 14. When the clamp is released, the locking block 121 on the inner side of the clamp 12 will engage in the engaging groove 21 on the side of the connector 2, thereby fixing the entire infusion set and effectively preventing the bottle stopper puncture device from detaching from the infusion bottle mouth, making operation more convenient and improving the continuity of treatment. In addition, after the clamp 12 and the connector 2 are connected, the positioning pin 15 and the positioning hole 23 are engaged to prevent the adjusting clamp 1 from falling off due to wear, further improving its clamping and fixing effect and enhancing its practicality.
[0043] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.
Claims
1. A device for preventing infusion set detachment, characterized in that, include: Fixing device, installed on the infusion set; The fixing device includes an adjusting clamp (1), a kit (3), and a connector (2); The top surface of the connector (2) is fixedly equipped with a clip (22), and the side surface is provided with a locking groove (21); The kit (3) includes a first half-clamp (31) and a second half-clamp (32). The end of the first half-clamp (31) is fixedly sleeved on the post of the pin (22), and the second half-clamp (32) is movably disposed on the post of the pin (22). The adjusting clamp (1) includes a clamping seat (13) and a locking member (12) disposed on the edge of one side surface of the clamping seat (13). The clamping seat (13) has a clamping body (14) on the side away from the locking member (12). The clamping seat (13) has a through mounting groove (11) on the side close to the locking member (12). The connecting member (2) is movably inserted into the mounting groove (11), and the engaging tooth groove (21) on the side engages with the locking member (12).
2. The device for preventing infusion set dislodgement according to claim 1, characterized in that, Both the first half-ring (31) and the second half-ring (32) have an adsorption magnetic block (33) fixedly embedded at their ends.
3. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The end of the second half-ring (32) is provided with an installation notch (321), and the second half-ring (32) is movably locked onto the column of the pin (22) through the installation notch (321).
4. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The inner side of the card (12) is provided with a card block (121) that engages with the engaging tooth groove (21).
5. The device for preventing infusion set dislodgement according to claim 4, characterized in that, The card (12) bends upward on the side away from the card block (121).
6. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The mounting base (13) has a through mounting hole on one side, and a positioning pin (15) is provided in the mounting hole.
7. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The connector (2) has a number of positioning holes (23) sequentially opened from top to bottom on one side of the positioning pin (15).
8. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The card (12) and the mounting base (13) are integrated and are both made of ABS plastic.
9. The device for preventing infusion set dislodgement according to claim 1, characterized in that, The connector (2) is made of ABS plastic.
10. The device for preventing infusion set dislodgement according to claim 1, characterized in that, All of the kits (3) are made of ABS plastic.