An infusion set
By integrating a three-way valve assembly and dynamic valve core switching control, the problem of long establishment time for multiple channels in intravenous infusion has been solved, achieving efficient and safe multi-channel drug infusion, improving work efficiency and reducing operational errors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI JINDAO MEDICAL TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-08-04
AI Technical Summary
In intravenous infusion therapy, when critically ill or emergency patients need to establish multiple intravenous access points, the traditional three-way valve assembly is time-consuming and inefficient.
By adopting an integrated three-way valve assembly and combining it with dynamic valve core switching control, the pre-construction of multi-channel drug infusion paths can be realized, forming a fully closed infusion system, which shortens the setup time and reduces the probability of operational errors.
It improves the efficiency of establishing intravenous access, reduces the probability of human error, avoids cross-contamination of medications, and ensures the safety and efficiency of the infusion process.
Smart Images
Figure CN224585126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an infusion kit. Background Technology
[0002] Currently, in clinical practice, when performing intravenous infusion therapy, medical staff need to assemble various infusion accessories and infusion devices, and then use needles to administer the infusion.
[0003] However, some critically ill or emergency patients often need to establish multiple intravenous access points during treatment. This requires the use of multiple three-way valves to connect and form multiple access points, which consumes a lot of preparation time and results in low work efficiency. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an infusion kit that uses a molded three-way valve assembly to centrally set up all three-way valves, eliminating the cumbersome assembly of individual three-way valves connected in series in the past and improving work efficiency.
[0005] An infusion kit according to an embodiment of the present invention includes a puncture assembly, a drip chamber, a flow regulator, a three-way valve assembly, and an external connector. The puncture assembly connects to a medication bottle; one end of the drip chamber is connected to the puncture assembly and is used to hold the medication output from the medication bottle; one end of the flow regulator is connected to the other end of the drip chamber and is used to regulate the infusion flow rate; the three-way valve assembly has a medication channel and several injection channels, the injection channels connecting to the medication channel, a valve core located at the junction of the medication channel and the injection channels, one end of the medication channel connecting to the other end of the flow regulator, and the valve core controlling whether the injection channels are connected, connected to the medication channel, or blocked; one end of the external connector connects to the other end of the medication channel, and the other end of the external connector connects to the infusion needle tubing.
[0006] It has at least the following beneficial effects:
[0007] The infusion kit integrates the three-way valve assembly, creating a unified pathway structure between the drug delivery channel and multiple injection channels. Combined with the valve core's dynamic switching control of each channel, it enables the pre-construction of multi-channel drug delivery paths, completely replacing the traditional assembly method of sequentially connecting three-way valves and improving preparation efficiency. Furthermore, the direct connection between the puncture assembly and the drug bottle, the pre-storage function of the drip chamber, the precise control of the flow regulator, and the standardized interface between the external connector and the infusion needle form a fully closed-loop infusion system. This shortens the multi-channel setup time, reduces the probability of human error, and the valve core's independent sealing mechanism for the injection channels prevents cross-contamination of the drugs.
[0008] According to some embodiments of this utility model, the puncture assembly includes a bottle stopper puncturer, an air inlet, and a Robert clamp. The bottle stopper puncturer is used to puncture the stopper of a medicine bottle; the air inlet is disposed on the pipe between the bottle stopper puncturer and the drip chamber, and is used to allow air to flow out of the medicine bottle; the Robert clamp is disposed on the pipe between the bottle stopper puncturer and the drip chamber, and is disposed between the air inlet and the drip chamber, and is used to clamp the pipe.
[0009] According to some embodiments of this utility model, a plurality of bottle stopper puncturers are provided, and an air inlet, a Robert clamp, and a bottle stopper puncturer are provided in a one-to-one correspondence. The pipe at the end of the Robert clamp away from the bottle stopper puncturer converges and connects to the drip chamber.
[0010] According to some embodiments of this utility model, the three-way valve assembly includes a valve housing, a valve core, and a movable connector. The valve housing has a drug solution channel and a drug injection channel. The drug solution channel extends out of the valve housing in a left-right direction. One end of the drug injection channel is connected to the drug injection channel, and the other end extends upward out of the valve housing. Several drug injection channels are provided. The valve core is correspondingly provided with each drug injection channel and is connected to the valve housing. The valve core is located at the intersection of the drug solution channel and the drug injection channel. Both the drug solution channel and the drug injection channel are controlled to be blocked or opened by the valve core. The movable connector connects to the left and right ends of the drug solution channel and the open end of the drug injection channel. A filter membrane is provided inside the movable connector. The valve housing and the movable connector are made of a blend of color dye, ultraviolet absorber, and polycarbonate. The drug solution channel and the drug injection channel in the valve housing cooperate with each other to achieve multiple drug injection channels in the drug solution channel, ensuring that multiple drugs can be added and infused together during a single infusion. The filter membrane in the movable connector can filter particles in the drug solution, ensuring the safety of the infusion. The valve body and movable joint are made of a blend of color dyes, ultraviolet absorbers and polycarbonate. The valve body is modified to prevent light from being absorbed by the drug solution during the infusion process, thus avoiding decomposition, oxidation and other reactions that could lead to drug failure.
[0011] According to some embodiments of this utility model, the valve housing is provided with holes corresponding to the valve core, and the holes are used to hang tags.
[0012] According to some embodiments of the present invention, the valve housing includes a body and an indicator plate. The indicator plate is integrally formed with the body. The liquid medicine channel and the injection channel are both located in the body, and the holes are located on the indicator plate.
[0013] According to some embodiments of this utility model, a knob is provided on the valve core, and the knob is used to operate the valve core to rotate.
[0014] According to some embodiments of the present invention, the filter membrane is detachably embedded in the movable joint.
[0015] According to some embodiments of the present invention, a baffle is provided on the inner side of the movable joint, and the filter membrane is embedded in the baffle.
[0016] According to some embodiments of this utility model, the left end, right end and opening end of the drug channel are all threaded with movable joints.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0019] Figure 1 This is a schematic diagram of the infusion kit according to an embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the three-way valve assembly according to an embodiment of the present utility model;
[0021] Figure 3 for Figure 2 An exploded view of the movable joint of the three-way valve assembly is shown.
[0022] Figure label:
[0023] Valve housing 100, body part 100a, indicator plate 100b;
[0024] Medicine channel 110, medicine injection channel 120, hole position 130, hollow hole 140;
[0025] Valve core 200, knob 210;
[0026] 300 movable connector, 310 filter membrane, 320 baffle;
[0027] Puncture assembly 400, bottle stopper puncturist 410, air inlet 420, Robert's clamp 430;
[0028] 500 dripping bucket, 510 filter membrane, 600 flow regulator, 700 external connector. Detailed Implementation
[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0030] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.
[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0032] Reference Figures 1 to 3 This utility model discloses an infusion kit, including a puncture assembly 400, a drip chamber 500, a flow regulator 600, a three-way valve assembly, and an external connector 700. The puncture assembly 400 is used to connect to the medication bottle; one end of the drip chamber 500 is connected to the puncture assembly 400, and the drip chamber 500 is used to hold the medication output from the medication bottle; one end of the flow regulator 600 is connected to the other end of the drip chamber 500, and the flow regulator 600 is used to regulate the infusion flow rate; the three-way valve assembly is provided with a medication channel 110 and several injection channels 120, the injection channels 120 are connected to the medication channel 110, a valve core 200 is provided at the junction of the medication channel 110 and the injection channels 120, one end of the medication channel 110 is connected to the other end of the flow regulator 600, and the valve core 200 is used to control the injection channels 120 to connect, connect to the medication channel 110, or block the injection channels 120; one end of the external connector 700 is connected to the other end of the medication channel 110, and the other end of the external connector 700 is used to connect to the infusion needle tubing.
[0033] Understandably, the infusion kit integrates the three-way valve assembly, forming a unified pathway structure between the drug channel 110 and multiple injection channels 120. Combined with the dynamic switching control of each channel by the valve core 200, it achieves pre-construction of multi-channel drug infusion paths, completely replacing the traditional assembly mode of sequentially connecting three-way valves and improving preparation efficiency. The direct connection between the puncture component 400 and the drug bottle, the pre-storage function of the drip chamber 500, the precise control of the flow regulator 600, and the standardized interface between the external connector 700 and the infusion needle form a fully closed infusion system. This shortens the multi-channel setup time, reduces the probability of human error, and the independent sealing mechanism of the valve core 200 for the injection channels 120 prevents cross-contamination of the drugs. The drip chamber 500 contains a filter membrane 510, which serves the same function as the filter membrane 310—filtering impurities.
[0034] In some embodiments, the puncture assembly 400 includes a bottle stopper puncturer 410, an air inlet 420, and a Robert clamp 430. The bottle stopper puncturer 410 is used to puncture the stopper of a medicine bottle; the air inlet 420 is disposed on the conduit between the bottle stopper puncturer 410 and the drip chamber 500, and is used to allow air to flow out of the medicine bottle; the Robert clamp 430 is disposed on the conduit between the bottle stopper puncturer 410 and the drip chamber 500, and is used to clamp the conduit. It is understood that the Robert clamp 430 is a commonly used water-stopping clamp.
[0035] In some embodiments, the bottle stopper piercing device 410 is provided in several ways, with the air inlet 420 and the Robert clamp 430 corresponding to the bottle stopper piercing device 410 one by one. The pipe of the Robert clamp 430 at the end away from the bottle stopper piercing device 410 converges and connects to the drip chamber 500.
[0036] Reference Figure 2 and Figure 3 The three-way valve assembly includes a valve housing 100, a valve core 200, and a movable joint 300. The valve body 100 is provided with a liquid medicine channel 110 and a drug injection channel 120. The liquid medicine channel 110 extends out of the valve body 100 in a left-right direction. One end of the drug injection channel 120 is connected to the drug injection channel 120, and the other end of the drug injection channel 120 extends upward out of the valve body 100. Several drug injection channels 120 are provided. The valve core 200 is provided in a one-to-one correspondence with the drug injection channel 120. The valve core 200 is connected to the valve body 100 and is located at the intersection of the liquid medicine channel 110 and the drug injection channel 120. The liquid medicine channel 110 and the drug injection channel 120 are both controlled to be blocked or opened by the valve core 200. The movable joint 300 is connected to the left end, the right end of the liquid medicine channel 110 and the open end of the drug injection channel 120. The movable joint 300 is provided with a filter membrane 310. The valve body 100 and the movable joint 300 are made of a blend of color dye, ultraviolet absorber and polycarbonate.
[0037] It should be understood that the drug solution channel 110 and the drug injection channel 120 of the valve housing 100 cooperate with each other to achieve multiple drug injection channels 120 on the drug solution channel 110, ensuring that multiple drugs can be added and infused together during a single infusion. A filter membrane 310 is installed inside the movable connector 300 to filter particles in the drug solution, ensuring the safety of the infusion. The valve housing 100 and the movable connector 300 are made of a blend of color dye, ultraviolet absorber, and polycarbonate; that is, the valve housing 100 undergoes light-shielding modification treatment. This prevents the drug solution from absorbing light energy and undergoing decomposition, oxidation, or other reactions during the infusion of photosensitive drugs, thus avoiding drug inactivation.
[0038] It should be noted that the valve body 100 and the movable connector 300 are made by blending colored dyes (different colors) and ultraviolet absorbers with polycarbonate (PC), which gives the valve body 100 and the movable connector 300 a light-shielding effect (light-shielding range: 290 nm~460 nm) and a certain degree of transparency, making it convenient to observe the infusion status during use. The valve core 200 of the three-way valve is a non-transparent part, so it does not require light-shielding modification treatment.
[0039] In some embodiments, the valve housing 100 is provided with a hole 130 corresponding to the valve core 200, and the hole 130 is used to hang a tag. It is understood that the tag can be provided with instruction text to prevent medical staff from making mistakes in the midst of chaos and confusing the types of medications required for different channels.
[0040] In some embodiments, the valve housing 100 includes a body portion 100a and an indicator plate 100b. The indicator plate 100b is integrally formed with the body portion 100a. Both the liquid channel 110 and the injection channel 120 are located on the body portion 100a, and the orifice 130 is located on the indicator plate 100b. It is understood that the indicator plate 100b can both hang an indicator tag and be easily gripped; it has good mechanical strength and is less prone to breakage compared to several three-way valves connected in series.
[0041] In some embodiments, a knob 210 is provided on the valve core 200. The knob 210 is used to operate the valve core 200 to rotate. It can be understood that the knob 210 is provided with three arrows pointing outwards. The valve core 200 has three interconnected holes, and the direction of the valve core 200 is determined by rotating it.
[0042] In some embodiments, the filter membrane 310 is detachably embedded in the movable joint 300. It is understood that the filter membrane 310 is adhered to the movable joint 300 by adhesive. A baffle 320 is provided on the inner side of the movable joint 300, and the filter membrane 310 is embedded in the baffle 320.
[0043] In some embodiments, the left and right ends of the liquid channel 110 and the open end of the injection channel 120 are all threadedly connected to a movable connector 300. A perforated hole 140 is provided between two adjacent valve cores 200 on the valve housing 100. It should be noted that the perforated hole 140 allows observation of the flow of medicine in the liquid channel 110 and allows for easy handling. The so-called movable connector 300 refers to a detachable connector, mainly used for transfer connection.
[0044] It should be noted that the valve core 200 has three interconnected holes, which correspond to the liquid medicine channel 110 and the injection channel 120. Rotating the valve core 200 can block the injection channel 120 while opening the liquid medicine channel 110, meaning that the liquid medicine channel 110 is completely unobstructed from the left end to the right end. Rotating the valve core 200 can also connect the injection channel 120 and the liquid medicine channel 110, while keeping the liquid medicine channel 110 completely unobstructed from the left end to the right end. Rotating the valve core 200 can also connect the injection channel 120 and the liquid medicine channel 110, but the liquid medicine channel 110 will be blocked. The key is to see which channel is blocked on the side of the valve core 200 without holes, thereby achieving different connection settings.
[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0046] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. An infusion set, characterized in that, include: Puncture assembly (400) for connecting to the medicine bottle; A drip chamber (500) is connected at one end to the puncture assembly (400), and the drip chamber (500) is used to hold the medicine output from the medicine bottle; A flow regulator (600) is connected at one end to the other end of the drip chamber (500), and the flow regulator (600) is used to regulate the infusion flow rate; A three-way valve assembly is provided with a liquid medicine channel (110) and a plurality of injection channels (120). The injection channels (120) are connected to the liquid medicine channel (110). A valve core (200) is provided at the junction of the liquid medicine channel (110) and the injection channels (120). One end of the liquid medicine channel (110) is connected to the other end of the flow regulator (600). The valve core (200) is used to control the injection channels (120) to be connected, the injection channels (120) to be connected to the liquid medicine channel (110), or to block the injection channels (120). An external connector (700) is connected at one end to the other end of the drug channel (110), and the other end of the external connector (700) is used to connect to the infusion needle tube.
2. The infusion set of claim 1, wherein, The puncture assembly (400) includes: Bottle stopper puncturer (410), used to puncture the stopper of a medicine bottle; An air inlet (420) is provided on the pipe between the bottle stopper piercing device (410) and the dripping funnel (500). The air inlet (420) is used to allow air to flow out of the medicine bottle. A Robert clamp (430) is disposed on the conduit between the stopper piercing device (410) and the drip chamber (500). The Robert clamp (430) is disposed between the air inlet (420) and the drip chamber (500). The Robert clamp (430) is used to clamp the conduit.
3. The infusion set of claim 2, wherein, The bottle stopper piercing device (410) is provided in several ways. The air inlet (420), the Robert clamp (430) and the bottle stopper piercing device (410) are provided in a one-to-one correspondence. The pipe of the Robert clamp (430) at the end away from the bottle stopper piercing device (410) converges and connects to the drip chamber (500).
4. A set for infusion according to any one of claims 1 to 3, characterised in that The three-way valve assembly includes: The valve housing (100) is provided with a liquid medicine channel (110) and a drug injection channel (120). The liquid medicine channel (110) extends out of the valve housing (100) in the left-right direction. One end of the drug injection channel (120) is connected to the drug injection channel (120), and the other end of the drug injection channel (120) extends upward out of the valve housing (100). The drug injection channel (120) is provided with a plurality of channels. The valve core (200) is provided in a one-to-one correspondence with the drug injection channel (120). The valve core (200) is connected to the valve housing (100). The drug liquid channel (110) and the drug injection channel (120) are both controlled to be blocked or opened by the valve core (200). The movable connector (300) is connected to the left end and right end of the liquid channel (110) and the opening end of the injection channel (120). A filter membrane (310) is provided inside the movable connector (300). The valve body (100) and the movable joint (300) are made of a blend of color dye, ultraviolet absorber and polycarbonate.
5. The infusion set of claim 4, wherein the at least one protrusion is a plurality of protrusions. The valve housing (100) is provided with a hole (130) corresponding to the valve core (200), and the hole (130) is used to hang a tag.
6. A solution infusion set as defined in claim 5, wherein, The valve housing (100) includes a body part (100a) and an indicator plate (100b). The indicator plate (100b) is integrally formed with the body part (100a). The liquid channel (110) and the injection channel (120) are both located on the body part (100a). The hole (130) is located on the indicator plate (100b).
7. The infusion set of claim 4, wherein the at least one of the first and second portions of the housing is formed of a material that is more flexible than the material of the other of the first and second portions of the housing. A knob (210) is provided on the valve core (200), and the knob (210) is used to operate the valve core (200) to rotate.
8. The infusion set of claim 4, wherein the at least one of the first and second portions of the housing is formed of a material that is more flexible than the material of the other of the first and second portions of the housing. The filter membrane (310) is detachably embedded in the movable joint (300).
9. The infusion set of claim 4, wherein, A baffle (320) is provided on the inner side of the movable joint (300), and the filter membrane (310) is embedded in the baffle (320).
10. The infusion set of claim 4, wherein, The left and right ends of the liquid channel (110) and the open end of the injection channel (120) are all threadedly connected to the movable joint (300).