A quick-release infusion connection device

Abstract

This invention discloses a quick-release infusion connection device, belonging to the field of medical device technology. The quick-release infusion connection device includes a first connector and a second connector, used to connect the outlet of an infusion container and the inlet of an infusion line, respectively. The first and second connectors each have a cooperating first and second connecting component, each equipped with a first and a second annular magnet, forming a radially symmetrical magnetic attraction assembly for adsorption alignment and connection fixation. The first connecting component has a self-sealing valve mechanism inside, which opens during connection and closes before the fluid channel physically disconnects during disconnection, effectively preventing drug leakage. The device also includes a rotation unlocking mechanism and a fixing component, further improving the reliability of the connection and ease of operation.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a quick-release infusion connection device. Background Technology

[0002] Currently, traditional infusion connection methods mostly use mechanical threaded connections such as Luer connectors. These connectors require manual alignment and tightening of the threads, which is relatively cumbersome. More importantly, at the moment of disconnection, due to residual positive pressure within the infusion container or the weight of the medication itself, a small amount of medication can easily leak from the separated connector. This leakage not only wastes medication and causes inaccurate dosage, but also risks contaminating the hands of healthcare workers or the patient's skin, posing a risk of contamination and cross-infection, and also complicates medical waste disposal. Furthermore, for patients requiring frequent transport or who are active, traditional connection methods may be prone to accidental loosening due to tubing tension, affecting the continuity and safety of treatment.

[0003] Therefore, there is an urgent need in this field for an infusion connection device that can enable quick and convenient connection and disconnection, and prevent leakage of the infusion solution at the moment of disconnection. Summary of the Invention

[0004] The purpose of this invention is to achieve rapid alignment and fixation of connectors through magnetic components, and to solve the problem of drug leakage by using a self-sealing valve to close it first when disconnected, thereby improving operational safety and convenience.

[0005] This invention adopts the following technical solution: a quick-release infusion connection device, comprising a first connector for connecting to the outlet of an infusion container and a second connector for connecting to the inlet of an infusion line. The first and second connectors are respectively provided with mutually cooperating first and second connecting components. The first and second connecting components are respectively provided with a first annular magnet and a second annular magnet forming a radially symmetrical magnetic attraction assembly, used to achieve adsorption alignment and connection fixation between the first and second connecting components. A self-sealing valve mechanism is provided inside the first connecting component. The magnetic attraction assembly includes a first annular magnet and a second annular magnet respectively embedded in the outer shell of the first and second connecting components, with the magnetic poles of the first and second annular magnets arranged to attract each other. The outer surfaces of the first and second annular magnets are covered with a biocompatible sealing layer to isolate them from the liquid in the flow channel. The core working principle of this quick-release infusion connection device is that, through the synergy of the magnetic attraction assembly and the linkage mechanism, it ensures rapid and automatic alignment and establishment of a fluid channel during connection, and that, upon disconnection, the self-sealing valve mechanism closes before the physical disconnection of the fluid channel, thereby preventing liquid leakage.

[0006] Specifically, the first and second connecting components approach each other through the magnetic attraction of the magnetic assembly, triggering a linkage mechanism to open the self-sealing valve mechanism, forming a fluid channel. When the first and second connecting components separate, the self-sealing valve mechanism closes before the physical disconnection of the fluid channel. This invention ensures, mechanistically, that the flow channel is reliably cut off before the two parts of the connector are completely separated, effectively blocking direct contact between external air and the liquid inside the tubing. This solves a core pain point that has plagued the clinical infusion field for many years: at the moment of disconnecting a traditional infusion connector, due to residual positive pressure or gravity within the infusion container, the medication easily leaks from the disconnected connector. This invention eliminates medication leakage during the disconnection process, improving operational safety and standardization.

[0007] Specifically, the self-sealing valve mechanism includes a double-valve valve made of elastic material for sealing the fluid passage. Under normal conditions, the double-valve valve closes under its own elasticity and the action of a pre-compression spring. The closing surface of the double-valve valve is at an angle of 30° to 70° to the fluid flow direction, so that when fluid pressure acts on the closing surface, it generates a positive pressure that enhances the sealing effect.

[0008] Specifically, the linkage mechanism includes a pin, which is disposed inside the second connecting component and is magnetic. The magnetic poles of the first annular magnet and the pin are arranged to repel each other. A spring is connected to the bottom of the pin, which drives the pin to open the self-sealing valve mechanism during connection. When the operator brings the first connector and the second connector close together, the first and second annular magnets inside them begin to interact. The magnets are preferably radially magnetized or axially multi-pole magnetized. During the pulling and closing process, the linkage mechanism is triggered. Specifically, the pin disposed inside the second connecting component moves relative to the second connector housing in the final stage of their connection. Due to the combined effect of the supporting force of the spring at its bottom and the repulsive force between its magnetic tip and the first annular magnet, the pin maintains a retracted and stable state in the initial stage of connector proximity. When the first connecting component and the second connecting component are attracted together, the repulsive force decreases, the compressed spring pushes the pin, and the pin extends into the first connecting component and opens its double-valve valve. At the same time, the opening action of the self-sealing valve mechanism is completed at the moment of connection.

[0009] Specifically, the maximum magnetic attraction force generated by the magnetic attraction component is greater than the sum of the opening force of the self-sealing valve mechanism, the magnetic repulsion force between the ejector pin and the first annular magnet, and the pressure of the spring driving the ejector pin in the open state.

[0010] Specifically, a rotary unlocking mechanism is provided between the first connecting component and the second connecting component. The rotary unlocking mechanism includes a protrusion and an L-shaped guide groove that mates with it. During disassembly, the infusion tubing is slightly rotated relative to the quick-release infusion connection device, causing the first connecting component and the second connecting component to rotate relative to each other to the unlocked position. The slider is then moved to pull the first connector and the second connector to both sides. The protrusion slides along the transverse section of the L-shaped guide groove, driving the ejector pin to retract under the action of the spring. The double-valve valve closes before the first connecting component and the second connecting component are completely separated.

[0011] Specifically, a fixing component is fitted onto the first connector and / or the second connector. The fixing component includes a slider and a ball. The slider is slidably disposed, and its inner surface has a protruding structure. By sliding the slider, the protruding structure can limit the ball's position, thereby achieving the connection, fixing, and disassembly between the first connector and the second connector. The fixing component also includes an elastic element that can move synchronously under the action of the slider. The outer periphery of the first connector has a recess for accommodating the ball. When the slider slides to the locking position, the protruding structure causes the ball to partially embed into the recess, thereby achieving connection and fixing.

[0012] While magnetic assemblies offer convenient connection guidance and primary adsorption force, they still pose a risk of accidental separation under unexpected axial tension or system vibration. This fixing assembly utilizes a sliding slider and raised structures on its inner surface to press and confine the ball within the corresponding recess on the outer periphery of the first connector. During connection, the magnetic assemblies function first, achieving rapid self-alignment and initial adsorption, pre-fixing the two connectors in the correct position. The user then slides the slider to complete the final locking. This provides double protection for the connection, effectively preventing connector detachment due to external pulling, tubing traction, or accidental collisions. It is particularly suitable for scenarios involving mobile patients or intravenous infusions during transport, fundamentally improving reliability and safety. The combination of the slider and ball can be looped around the connector housing without significantly increasing the connector's radial dimensions, achieving enhanced functionality and a miniaturized overall structure. This facilitates hand operation and aligns with the trend towards lightweight and portable medical devices.

[0013] The core advantages of this invention are as follows: By using radially symmetrical magnetic suction components set in the first and second connecting parts, the magnetic force is used to automatically guide and attract the two parts, enabling them to be quickly and accurately aligned and initially fixed, simplifying the connection operation; by setting a self-sealing valve mechanism inside the first connecting part, it is ensured that the valve can close before the physical disconnection of the fluid channel during the connector separation process, thereby preventing leakage of medicine caused by positive pressure or gravity in the container when the infusion line is removed; by integrating the magnetic alignment function with the built-in sealing valve into a compact connector structure, while pursuing the convenience of "quick disassembly", it ensures the sealing reliability of the connection process and the leak-free safety when disconnecting, improving the overall reliability of the infusion process. Attached Figure Description

[0014] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is an overall structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the first connecting component in Embodiment 1.

[0017] Figure 3 This is a schematic diagram of the second connecting component in Embodiment 1.

[0018] Figure 4 This is a schematic diagram of the first connecting component, the second connecting component, and the rotation unlocking mechanism in Embodiment 1.

[0019] Figure 5 This is a schematic diagram of the ejector pin described in Embodiment 1.

[0020] Figure 6 This is a schematic diagram showing the connection between the first and second annular magnets.

[0021] Figure 7 This is a schematic diagram of the first and second ring magnets when connected.

[0022] Figure 8 This is a schematic diagram of the first and second ring magnets after they are connected.

[0023] Figure 9 This is a schematic diagram of the fixed components during connection.

[0024] Figure 10 This is a schematic diagram of the fixing components during disassembly.

[0025] Figure Descriptions: 1-First connector; 11-First connecting component; 111-First connecting component housing; 112-Self-sealing valve mechanism; 12-First thread; 13-First damping element; 2-Second connector; 21-Second connecting component; 211-Second connecting component housing; 212-Pin; 213-Spring; 22-Second thread; 23-Second damping element; 31-First annular magnet; 32-Second annular magnet; 4-Rotation unlocking mechanism; 41-Protrusion; 42-L-shaped guide groove; 5-Fixing assembly; 51-Slider; 52-Elastic element; 53-Bouncing ball. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] See Figures 1-3A quick-release infusion connection device includes a first connector 1 for connecting to the outlet of an infusion container and a second connector 2 for connecting to the inlet of an infusion line. The first connector 1 and the second connector 2 each have a first connecting component 11 and a second connecting component 21 that cooperate with each other. The first connecting component 11 and the second connecting component 21 are each provided with a first annular magnet 31 and a second annular magnet 32, forming a radially symmetrical magnetic attraction assembly 3 for adsorption alignment and connection fixation between the first connecting component 11 and the second connecting component 21. A self-sealing valve mechanism 112 is provided inside the first connecting component 11. The magnetic attraction assembly 3 includes a first annular magnet 31 and a second annular magnet 32 ​​respectively embedded in the outer shell of the first connecting component 11 and the second connecting component 21, with the magnetic poles of the first annular magnet 31 and the second annular magnet 32 ​​arranged to attract each other. The outer surfaces of the first annular magnet 31 and the second annular magnet 32 ​​are covered with a biocompatible sealing layer to isolate them from the liquid in the flow channel. The core working principle of the quick-release infusion connection device of the present invention is to ensure that the fluid channel can be quickly and automatically aligned and established during connection through the cooperation of the magnetic suction component 3 and the linkage mechanism. When disconnected, the self-sealing valve mechanism 112 can close before the physical disconnection of the fluid channel, thereby avoiding liquid leakage.

[0030] Specifically, the first connecting component 11 and the second connecting component 21 approach each other through the attraction of the magnetic component 3, triggering a linkage mechanism to open the self-sealing valve mechanism 112, forming a fluid channel. When the first connecting component 11 and the second connecting component 21 separate, the self-sealing valve mechanism 112 closes before the physical disconnection of the fluid channel. The solution of this invention ensures, mechanistically, that the flow channel is reliably cut off before the two parts of the connector are completely separated. This effectively blocks direct contact between external air and the liquid inside the pipeline, solving a core pain point that has plagued the clinical infusion field for many years: at the moment of disconnecting a traditional infusion connector, due to residual positive pressure or gravity inside the infusion container, the medication easily leaks from the disconnected connector. This invention eliminates the leakage of medication during the disconnection process, improving the safety and standardization of the operation.

[0031] Specifically, the self-sealing valve mechanism 112 includes a double-valve valve made of elastic material for sealing the fluid passage. Under normal conditions, the double-valve valve closes under its own elasticity and the action of a pre-compression spring. The closing surface of the double-valve valve is at an angle of 30° to 70° to the fluid flow direction, so that when fluid pressure acts on the closing surface, it generates a positive pressure that enhances the sealing effect.

[0032] See Figure 3 and Figure 5The linkage mechanism includes a pin 212, which is disposed inside the second connecting component 21 and is magnetic. The magnetic poles of the first annular magnet 31 and the pin 212 are arranged to repel each other. A spring 213 is connected to the bottom of the pin 212, which drives the pin 212 to open the self-sealing valve mechanism 112 during connection. When the operator brings the first connector 1 and the second connector 2 close together, the first annular magnet 31 and the second annular magnet 32 ​​disposed inside them begin to interact. The magnets are preferably magnetized radially or axially with multiple poles. During the pulling and closing process, the linkage mechanism is triggered. Figure 6 , Figure 7 , Figure 8 These are schematic diagrams showing the relative positions of the first annular magnet 31 and the second annular magnet 32 ​​before, during, and after connection. Specifically, the ejector pin 212, located inside the second connecting component 21, moves relative to the housing of the second connector 2 during the final stage of connection. Due to the combined effect of the supporting force of its bottom spring 213 and the repulsive force between its magnetic tip and the first annular magnet 31, the ejector pin 212 maintains a stable retracted state during the initial approach of the connector. When the first connecting component 11 and the second connecting component 21 are attracted together, the repulsive force decreases, the compressed spring 213 pushes the ejector pin 212, and the ejector pin 212 extends into the first connecting component 11 and opens its double-valve valve. Simultaneously, the opening action of the self-sealing valve mechanism 112 is completed at the moment of connection.

[0033] Specifically, the maximum magnetic attraction force generated by the magnetic attraction component 3 is greater than the opening force of the self-sealing valve mechanism 112, the magnetic repulsion force between the ejector pin 212 and the first annular magnet 31, and the pressure of the spring 213 driving the ejector pin 212 in the open state.

[0034] See Figure 4A rotary unlocking mechanism 4 is provided between the first connecting component 11 and the second connecting component 21. The rotary unlocking mechanism 4 includes a protrusion 41 and an L-shaped guide groove 42 that mates with it. Specifically, the first connector 1 has a first thread 12 inside its housing for connecting to an infusion container. The second connector 2 has a second thread 22 inside its housing for connecting to an infusion tubing. The first connecting component 11 is installed inside the first connector 1 via a bearing, bushing, or loose-fit guide structure, allowing it to rotate relative to the housing of the first connector 1. The connection relationship between the second connecting component 21 and the housing of the second connector 2 is the same. The outer circumference of the second connecting component 21 is provided with a keyway structure for circumferential positioning, and the keyway structure mates with a corresponding structure on the inner wall of the infusion tubing. During disassembly, slightly rotate the infusion tubing relative to the quick-release infusion connection device to rotate the first connecting component 11 and the second connecting component 21 relative to each other to the unlock position. Move the slider 51 to pull the first connector 1 and the second connector 2 to both sides. The protrusion 41 slides along the transverse section of the L-shaped guide groove 42, driving the pin 212 to retract under the action of the spring 213. The double-valve valve closes before the first connecting component 11 and the second connecting component 21 are completely separated. The retraction mechanism of the ejector pin 212 is as follows: When the protrusion 41 slides along the transverse section of the L-shaped guide groove 42, the outer shell of the second connecting component 21 undergoes axial displacement relative to the ejector pin 212, i.e., the outer shell moves backward. At this time, the tip of the ejector pin 212 is obstructed because it is still in the self-sealing valve mechanism 112, which causes the spring 213 at the bottom of the ejector pin 212 to be further stretched and retracted. As the separation action continues, when the tip of the ejector pin 212 exits from the self-sealing valve mechanism 112 to the critical point, the double-valve valve closes instantly under its own strong elastic restoring force. After the valve closes, its obstruction force on the tip of the ejector pin 212 disappears immediately. At this time, the ejector pin 212 moves backward and quickly retracts to the initial position inside the housing of the second connecting component 21. This design ensures that the ejector pin 212 will inevitably retract during disassembly through the forced displacement of the mechanical structure and the release of spring energy, thereby ensuring that the self-sealing valve mechanism 112 can reliably close before the physical disconnection of the fluid channel.

[0035] See Figure 1 , Figure 9 and Figure 10A fixing component 5 is fitted onto the first connector 1 and / or the second connector 2. The fixing component 5 includes a slider 51 and a ball 53. The slider 51 is slidably disposed, and its inner surface has a protruding structure. By sliding the slider 51, the protruding structure can limit the ball 53, thereby realizing the connection, fixation, and disassembly between the first connector 1 and the second connector 2. The fixing component 5 also includes an elastic element 52, which can move synchronously under the drive of the slider 51. The outer periphery of the first connector 1 has a recess for accommodating the ball 53. When the slider 51 slides to the locking position, the protruding structure causes the ball 53 to partially embed into the recess, thereby achieving connection and fixation. During disassembly, the user first needs to rotate the first connecting component 11 and the second connecting component 21 relative to each other, so that the protrusion 41 moves along the vertical section of the L-shaped guide groove 42 to the horizontal section entrance, releasing the axial locking of the magnetic suction component 3; then, slide the slider 51 again to release the limitation of the ball 53, so that the first connector 1 and the second connector 2 can be completely separated. This process drives the ejector pin 212 to retract, and the self-sealing valve mechanism 112 closes. The first connecting part 11 and the second connecting part 21 are respectively connected to the first damping element 13 and the second damping element 23, which can play a buffering role and eliminate vibration.

[0036] While the magnetic suction component 3 provides convenient connection guidance and primary adsorption force, there is still a risk of accidental separation under unexpected axial tension or system vibration. This fixing component 5, through the sliding slider 51, utilizes the raised structure on its inner surface to press the ball 53 into and confine it within the corresponding recess on the outer periphery of the first connector 1. During connection, the magnetic suction component 3 first functions, achieving rapid self-alignment and initial adsorption, pre-fixing the two connectors in the correct position. At this point, the user slides the slider 51 to complete the final locking. This provides double protection for the connection, effectively preventing connector detachment due to external pulling, tubing traction, or accidental collisions. It is particularly suitable for scenarios involving mobile patients or infusion during transport, fundamentally improving reliability and safety. The combination of slider 51 and ball 53 can be looped around the connector housing without significantly increasing the radial dimension of the connector, achieving enhanced functionality and miniaturization of the overall structure. This facilitates hand operation and aligns with the trend towards lightweight and portable medical devices.

[0037] Example 2

[0038] Based on Embodiment 1, this embodiment further optimizes the design of the fit between the self-sealing valve mechanism 112 and the ejector pin 212 to achieve absolute stability of the ejector pin 212 position in the connected state and trigger its rapid and reliable retraction during disassembly, thereby further improving the reliability of leak prevention. The double-valve structure of the self-sealing valve mechanism 112 is integrally molded from high-resilience, fatigue-resistant medical-grade silicone, and its closure opening is in a tight linear contact in the natural state. The tip of the ejector pin 212 is designed to include a guide cone angle at the front end and a cylindrical positioning section at the rear end, and the ejector pin 212 is eccentrically positioned. To achieve stable maintenance in the connected state, the diameter of the cylindrical positioning section forms an interference fit of 0.05mm~0.15mm with the inner diameter of the double valve when it is naturally closed. When the ejector pin 212 pushes open the double-valve diaphragm during connection and the cylindrical positioning section completely passes through the diaphragm closure opening, the elastic deformation of the double-valve diaphragm material applies a uniform radial clamping force. The resulting static friction force constitutes axial locking of the ejector pin 212, effectively preventing accidental retraction or movement caused by pipeline vibration or pressure fluctuations, ensuring stable and unobstructed fluid flow. During disassembly, when the user's operation causes the second connecting component housing 211 to rotate relative to the first connecting component housing 111, an eccentric displacement occurs between the ejector pin 212 and the self-sealing valve mechanism 112, resulting in a sharp reduction in the contact area between the double-valve diaphragm and the ejector pin 212. Consequently, the radial clamping force and axial friction force decrease. At this time, the restoring force of the spring 213 becomes the dominant force, quickly pushing the ejector pin 212 away from the double-valve diaphragm, completing the retraction and reset. Simultaneously, after losing support, the double-valve diaphragm quickly and completely closes due to its strong elastic restoring force. Through the above design, the system can provide a strong holding force when connected, and when disassembled, only rotation is needed to trigger an instantaneous switching of force to achieve "micro-motion disengagement", which makes the closing action of the self-sealing valve mechanism 112 more sensitive.

[0039] The rotary unlocking mechanism 4 includes a protrusion 41 and a mating L-shaped guide groove 42. The vertical section of the L-shaped guide groove 42 has an unlocking position, a first locking position, and a second locking position. The unlocking position is located at the entrance of the horizontal section of the L-shaped guide groove 42, the first locking position is located near the horizontal section of the L-shaped guide groove 42, and the second locking position is located at the bottom of the vertical section of the L-shaped guide groove 42. The second connector 2 has markings for the unlocking position, the first locking position, and the second locking position. When disassembling this connecting device, two steps must be performed in sequence:

[0040] Step 1: The user operates the infusion tubing to rotate relative to the quick-release infusion connector. This action causes the first connecting component 11 (second connecting component 21) to rotate relative to the second connector 2 (first connector 1). The rotation causes the protrusion 41 on the first connecting component 11 to move from the first locking position of the L-shaped guide groove 42 to the second locking position and then to the unlocking position, sliding from the vertical section that restricts axial movement into the horizontal section that allows axial movement, completing the rotational unlocking. At this time, the ejector pin 212 retracts, and the self-sealing valve mechanism 112 reliably closes before the physical disconnection of the fluid channel, thereby cutting off the drug flow path. The connection between the two connectors is maintained solely by the magnetic force of the magnetic attraction component 3 and the mechanical locking of the fixing component 5.

[0041] Step 2: Subsequently, the user slides the slider 51 of the fixing component 5 to release the radial restraint on the ball 53. Under elastic action, the ball 53 disengages from the recess on the outer periphery of the first connector 1, releasing the final mechanical lock between the first connector 1 and the second connector 2. After completing this operation, the user can easily and completely separate the first connector 1 and the second connector 2 axially.

[0042] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art may make some modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but these should still be regarded as the technology or embodiments that are substantially the same as the present invention.

[0043] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A quick-release infusion connection device, comprising a first connector (1) for connecting to the outlet of an infusion container and a second connector (2) for connecting to the inlet of an infusion line, characterized in that, The first connector (1) and the second connector (2) are respectively provided with a first connecting component (11) and a second connecting component (21) that cooperate with each other. The first connecting component (11) and the second connecting component (21) are respectively provided with a first annular magnet (31) and a second annular magnet (32) to form a radially symmetrical magnetic attraction assembly (3) for adsorption alignment and connection fixation between the first connecting component (11) and the second connecting component (21). The first connecting component (11) is provided with a self-sealing valve mechanism (112) inside. The first connecting component (11) and the second connecting component (21) approach each other through the adsorption of the magnetic attraction assembly (3) and trigger the linkage mechanism to open the self-sealing valve mechanism (112) to form a fluid channel. When the first connecting component (11) and the second connecting component (21) are connected, the first connecting component (11) and the second connecting component (21) are connected. When the two connecting parts (21) are separated, the self-sealing valve mechanism (112) closes before the physical disconnection of the fluid channel; the linkage mechanism includes a pin (212), which is located inside the second connecting part (21) and is magnetic. The magnetic poles of the first annular magnet (31) and the pin (212) are arranged to repel each other. A spring (213) is connected to the bottom of the pin (212), and the spring (213) is used to drive the pin (212) to open the self-sealing valve mechanism (112) when connected; the maximum magnetic attraction force generated by the magnetic attraction component (3) is greater than the opening force of the self-sealing valve mechanism (112), the magnetic repulsion between the pin (212) and the first annular magnet (31), and the pressure of the spring (213) driving the pin (212) in the open state.

2. The quick-release infusion connection device according to claim 1, characterized in that, The self-sealing valve mechanism (112) includes a double-valve valve made of an elastic material for sealing the fluid passage.

3. The quick-release infusion connection device according to claim 2, characterized in that, The closing surface of the dual-valve valve is at an angle of 30° to 70° to the fluid flow direction, so that when the fluid pressure acts on the closing surface, it can generate a positive pressure that enhances the sealing effect.

4. The quick-release infusion connection device according to claim 1, characterized in that, A rotary unlocking mechanism (4) is provided between the first connecting component (11) and the second connecting component (21). The rotary unlocking mechanism (4) includes a protrusion (41) and an L-shaped guide groove (42) that cooperates with it.

5. The quick-release infusion connection device according to claim 1, characterized in that, A fixing component (5) is fitted on the first connector (1) and / or the second connector (2). The fixing component (5) includes a slider (51) and a ball (53). The slider (51) is slidably arranged and has a protruding structure on its inner surface. By sliding the slider (51), the protruding structure can limit the ball (53) to achieve the connection fixing and disassembly between the first connector (1) and the second connector (2).

6. The quick-release infusion connection device according to claim 5, characterized in that, The fixing component (5) also includes an elastic element (52), which can move synchronously under the drive of the slider (51).

7. The quick-release infusion connection device according to claim 5, characterized in that, The outer periphery of the first connector (1) is provided with a recess for accommodating the ball (53).

Images