An infusion set with automatic air venting function
By designing an infusion set with an automatic air venting function, air bubbles are automatically expelled using the buoyancy of the medication, solving the problem of low efficiency in manual air venting and achieving an efficient and safe infusion process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YAKAI MEDICAL TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-31
AI Technical Summary
In existing technologies, manual venting is inefficient and prone to operational errors when dealing with multiple infusion bottles, consumes a lot of time and effort, and poses safety risks.
An infusion set with automatic venting function was designed. By setting multiple outlets and long ports of specific widths in the drip chamber assembly, air bubbles are automatically expelled by the buoyancy of the medicine. The drip chamber top cover, drip tube and drip chamber bottom cover are connected by cyclohexanone, and the cap is slidably connected to the extension tube to realize automatic venting.
It improves exhaust efficiency, reduces time and effort consumption, lowers the risk of operational errors, and ensures the safety and stability of the infusion process.
Smart Images

Figure CN224573035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of infusion set technology, and in particular to an infusion set with automatic venting function. Background Technology
[0002] Automatic air-venting infusion sets, as crucial equipment in the field of medical infusion, have demonstrated numerous positive implications during their development. Since the 1960s, infusion set technology has continuously evolved, and the introduction of automatic air-venting functionality has brought significant convenience to medical infusion operations. Automatic air-venting infusion sets can automatically remove air bubbles from the infusion tubing, effectively preventing them from entering the patient's circulatory system. This is vital for ensuring patient safety, as air bubbles entering the bloodstream can lead to serious complications such as air embolism, threatening the patient's health and even life. Simultaneously, the automatic air-venting function improves the stability and reliability of the infusion process, reducing infusion interruptions caused by air bubbles and ensuring a continuous and stable delivery of medication to the patient, thus helping to maintain therapeutic effects. Furthermore, the use of automatic air-venting infusion sets also improves the efficiency of medical work, as medical staff no longer need to frequently manually check and remove air bubbles, allowing them to devote more time and energy to other important medical and nursing tasks.
[0003] However, before the development of automatic air-venting infusion sets, the medical community generally used manual air-venting. Manual air-venting required medical staff to manually control the pressure of the infusion tubing to expel air bubbles. This method had obvious inconveniences and risks. When medical staff faced the situation of handling multiple infusion bottles at the same time, manual air-venting was extremely inefficient. Each infusion bottle required medical staff to perform air-venting operations individually, which not only consumed a lot of time and energy, but also easily led to operational errors. Utility Model Content
[0004] The purpose of this invention is to provide an infusion set with automatic air venting function, which aims to solve the problem that before the development of automatic air venting infusion sets, the medical community generally used manual air venting. Manual air venting requires medical staff to manually control the pressure of the infusion tubing to expel air bubbles. This method has obvious inconvenience and risks. When medical staff are dealing with multiple infusion bottles at the same time, manual air venting is extremely inefficient. Each infusion bottle requires medical staff to perform air venting operation individually, which not only consumes a lot of time and energy, but also easily leads to operational errors.
[0005] To achieve the above objectives, this utility model employs an infusion set with an automatic venting function, comprising a drip chamber assembly, a drip tube, and a cap. The drip chamber assembly includes an upper drip chamber cap and a lower drip chamber cap. The bottom of the cap has an outlet port. An extension tube is provided in the middle of the lower drip chamber cap. The lower drip chamber cap has a long port inside. The upper drip chamber cap is slidably connected to the drip tube and covers the top of the drip tube. The drip tube is slidably connected to the lower drip chamber cap and covers the top of the lower drip chamber cap. The cap is slidably connected to the extension tube and is fitted onto the extension tube.
[0006] The number of outflow ports is three, and the width of each outflow port is 1mm.
[0007] The number of the long ports is three, and the width of each long port is 0.5mm.
[0008] The upper cover of the dropper, the dropper tube, and the lower cover of the dropper are connected by applying cyclohexanone, and the cyclohexanone is located on the side wall of the dropper tube.
[0009] The cap and the lower cover of the drip chamber are connected by applying cyclohexanone, with the cyclohexanone located at the bottom of the cap.
[0010] The cap has multiple slots on its outer edge, and the lower cover of the dripping bucket has multiple blocks on its inner side, with each block located within a corresponding slot.
[0011] This utility model discloses an infusion set with automatic air venting function. Through the special design of the drip chamber cap, the drip tube, the drip chamber bottom cap, and the cap, it achieves automatic air venting of the medication, eliminating the need for medical personnel to manually control the pressure of the infusion tubing to expel air bubbles. The bottom of the cap has three 1mm wide outflow ports, allowing the medication to flow out from the bottom while air bubbles move upwards due to buoyancy. The bottom cap of the drip chamber has three 0.5mm wide elongated ports to facilitate the upward expulsion of air bubbles, thus avoiding the risk of air bubbles entering the circulatory system. This design greatly improves air venting efficiency, reduces time and effort consumption, and also reduces the risk of operational errors when medical personnel are handling multiple infusion bottles simultaneously. Attached Figure Description
[0012] 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.
[0013] Figure 1 This is a three-dimensional perspective view of the infusion set with automatic venting function according to this utility model.
[0014] Figure 2 This is a disassembled schematic diagram of the infusion set with automatic venting function according to this utility model.
[0015] Figure 3 This is a schematic diagram of the internal structure of the infusion set with automatic venting function according to this utility model.
[0016] 1-Dropper, 2-Cap, 3-Drop chamber top cover, 4-Drop chamber bottom cover, 5-Outlet port, 6-Extension tube, 7-Long port, 8-Slot, 9-Card block. Detailed Implementation
[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0018] Please see Figures 1 to 3 This utility model provides an infusion set with automatic venting function, including a drip chamber assembly, a drip tube 1, and a cap 2. The drip chamber assembly includes an upper drip chamber cover 3 and a lower drip chamber cover 4. The bottom of the cap 2 has an outlet port 5. An extension tube 6 is provided in the middle of the lower drip chamber cover 4. The lower drip chamber cover 4 has a long port 7 inside. The upper drip chamber cover 3 is slidably connected to the drip tube 1 and covers the top of the drip tube 1. The drip tube 1 is slidably connected to the lower drip chamber cover 4 and covers the top of the lower drip chamber cover 4. The cap 2 is slidably connected to the extension tube 6 and is sleeved on the extension tube 6.
[0019] In this embodiment, by integrating the drip chamber assembly, the dropper 1, and the cap 2, an automatic air venting function is achieved, effectively preventing air bubbles from entering the blood circulation system, thereby reducing the medical risks caused by air bubbles and improving the safety and convenience of the infusion process.
[0020] Furthermore, the number of outflow ports 5 is three, and the width of each outflow port 5 is 1mm.
[0021] In this embodiment, the three 1mm wide outflow ports 5 ensure that the medicine flows out evenly and stably from the bottom of the drip chamber. At the same time, it facilitates the upward movement and discharge of air bubbles under the action of buoyancy, further enhancing the automatic air venting effect of the infusion set and improving the infusion efficiency.
[0022] Furthermore, the number of the long ports 7 is three, and the width of each long port 7 is 0.5mm.
[0023] In this embodiment, three 0.5mm wide and long ports 7 provide a clear upward channel for the air bubbles, allowing them to smoothly escape upwards along these ports, avoiding the accumulation of air bubbles in the medication solution, thereby ensuring the smoothness and safety of the infusion process.
[0024] Furthermore, the upper cover 3 of the dripping chamber, the dropper 1, and the lower cover 4 of the dripping chamber are connected by applying cyclohexanone, and the cyclohexanone is located on the side wall of the dropper 1.
[0025] In this embodiment, by using cyclohexanone as a binder and applying it to the side wall of the dropper 1 to achieve a tight connection between the upper cover 3 of the drip chamber, the dropper 1 and the lower cover 4 of the drip chamber, not only is the structural stability of the infusion set guaranteed, but the assembly process is also simplified and production efficiency is improved. At the same time, the sealing of the connection is ensured to prevent leakage of the medicine.
[0026] Furthermore, the cap 2 and the lower cover 4 of the drip chamber are connected by applying cyclohexanone, and the cyclohexanone is located at the bottom of the cap 2.
[0027] In this embodiment, this connection method ensures a firm connection between the cap 2 and the lower cover 4 of the drip chamber, while also facilitating disassembly and cleaning. At the same time, the use of cyclohexanone enhances the sealing performance of the connection, effectively preventing leakage of the medicine and air bubbles.
[0028] Furthermore, the outer edge of the cap 2 has multiple slots 8, and the inner side of the dripping bucket cover 4 is provided with multiple blocks 9, and the multiple blocks 9 are all located in the corresponding slots 8.
[0029] In this embodiment, this design not only enhances the connection strength between the cap 2 and the lower cover 4 of the drip chamber, but also improves the overall structural stability of the infusion set, ensuring that the components will not loosen or fall off due to vibration or external force during the infusion process.
[0030] In this invention, the upper cover 3, the dropper 1, and the lower cover 4 of the drip chamber are first tightly connected and assembled in place by applying cyclohexanone to the side wall of the dropper 1 and the bottom of the cap 2, ensuring that the locking block 9 on the inner side of the lower cover 4 is accurately engaged in the locking groove 8 on the outer edge of the cap 2 to form a stable lock. Then, the medicine is injected into the drip chamber through the upper cover 3. The medicine gathers at the bottom of the drip chamber and slowly flows into the lower cover 4 through the three 1mm wide outflow ports 5 at the bottom of the cap 2. At this time, air bubbles are discharged upward along the three 0.5mm wide long ports 7 inside the lower cover 4 under the action of buoyancy, avoiding entry into the blood circulation system. During the infusion process, the sliding connection design between the extension tube 6 and the cap 2 ensures smooth flow of medicine. The entire device significantly improves the safety and ease of operation of infusion through an automated venting mechanism.
[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. An infusion set with automatic venting function, characterized in that, The device includes a dripping container assembly, a dropper, and a cap. The dripping container assembly includes an upper cap and a lower cap. The cap has an outlet port at its bottom. An extension tube is provided in the middle of the lower cap. The lower cap has a long port inside. The upper cap is slidably connected to the dropper and covers the top of the dropper. The dropper is slidably connected to the lower cap and covers the top of the lower cap. The cap is slidably connected to the extension tube and is fitted onto the extension tube.
2. The infusion set with automatic venting function as described in claim 1, characterized in that, The number of outflow ports is three, and the width of each outflow port is 1mm.
3. The infusion set with automatic venting function as described in claim 2, characterized in that, The number of long ports is three, and the width of each long port is 0.5mm.
4. The infusion set with automatic venting function as described in claim 3, characterized in that, The upper cover of the dropper, the dropper tube, and the lower cover of the dropper are connected by applying cyclohexanone, and the cyclohexanone is located on the side wall of the dropper tube.
5. The infusion set with automatic venting function as described in claim 4, characterized in that, The cap and the lower cover of the drip chamber are connected by applying cyclohexanone, with the cyclohexanone located at the bottom of the cap.
6. The infusion set with automatic venting function as described in claim 5, characterized in that, The outer edge of the cap has multiple slots, and the inner side of the lower cover of the dripping bucket is provided with multiple blocks, and each block is located in a corresponding slot.