Quick-release infusion connecting device

Abstract

The invention discloses a quick-release infusion connecting device, and belongs to the technical field of medical instruments. The quick-release infusion connecting device comprises a first connector and a second connector which are respectively used for connecting an outlet of an infusion container and an inlet of an infusion pipeline. The first connector and the second connector are internally provided with a first connecting part and a second connecting part which are matched with each other respectively, and the first connecting part and the second connecting part are provided with a first annular magnet and a second annular magnet respectively to form a radially symmetrical magnetic attraction assembly used for achieving attraction alignment and connection fixation. A self-sealing valve mechanism is arranged in the first connecting part, the self-sealing valve mechanism is opened during connection, and the self-sealing valve mechanism is closed before physical disconnection of the fluid channel during disconnection, so that liquid medicine leakage is effectively prevented. The device is further provided with a rotary unlocking mechanism and a fixing assembly, so that the connection reliability and the operation convenience are further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a quick-release infusion connecting device. BACKGROUND

[0002] At present, traditional infusion connecting methods mostly adopt mechanical threaded connecting structures such as luer connectors. Such connectors need to be manually aligned and rotated for tightening during connection, which is relatively complicated. More importantly, a small amount of liquid medicine is prone to leak from the gap of the separated connector due to the residual positive pressure in the infusion container or the gravity of the liquid medicine itself at the moment of disconnection. Such leakage not only causes waste of liquid medicine and inaccuracy of dosage, but also may contaminate the hands of medical staff or the skin of patients, posing a risk of pollution and cross infection, and also bringing inconvenience to the disposal of medical waste. In addition, for some patients who need to be frequently transported or are in an active state, the traditional connecting method may have the risk of accidental disconnection due to the pulling of the pipeline, affecting the continuity and safety of treatment.

[0003] Therefore, there is an urgent need in the art for an infusion connecting device capable of realizing quick and convenient connection and disconnection and eliminating liquid leakage at the moment of disconnection. SUMMARY

[0004] The purpose of the present application is to realize quick alignment and fixation of the connector through the magnetic attraction assembly, and to solve the problem of liquid leakage by closing the self-sealing valve first at the moment of disconnection, thereby improving the safety and convenience of operation.

[0005] The present application adopts the following technical solution: a quick-release infusion connecting device, comprising a first connector for connecting the outlet of an infusion container and a second connector for connecting the inlet of an infusion pipeline, wherein the first connector and the second connector are respectively provided with a first connecting component and a second connecting component connected with each other, the first connecting component and the second connecting component are respectively provided with a first annular magnet and a second annular magnet to form a radially symmetrical magnetic attraction assembly for realizing the adsorption alignment and connecting fixation between the first connecting component and the second connecting component; and the first connecting component is internally provided with a self-sealing valve mechanism. The magnetic attraction assembly comprises a first annular magnet and a second annular magnet embedded in the housings of the first connecting component and the second connecting component, respectively, and the magnetic poles of the first annular magnet and the second annular magnet are arranged to be attracted to each other. The outer surfaces of the first annular magnet and the second annular magnet 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 connecting device of the present application lies in the cooperation of the magnetic attraction assembly and the linkage mechanism to ensure that the fluid channel can be quickly and automatically aligned and established during connection, and the self-sealing valve mechanism can be closed before the physical disconnection of the fluid channel during disconnection, thereby avoiding liquid leakage.

[0006] Specifically, the first connecting component and the second connecting component are attracted to each other by the magnetic attraction assembly, and trigger the linkage mechanism to open the self-sealing valve mechanism to form a fluid passage; when the first connecting component and the second connecting component are separated, the self-sealing valve mechanism closes before the physical disconnection of the fluid passage. The scheme of the present application ensures that the flow channel is reliably cut off before the two parts of the connector are completely separated, which effectively blocks the direct contact between external air and internal liquid of the pipeline, thereby solving a core pain point in the field of clinical infusion for many years: the drug liquid is prone to leak from the pulled-out connector due to the residual positive pressure in the infusion container or the action of gravity. The present application makes the pulling action itself no longer accompanied by drug liquid dripping, thereby improving the safety and standardization of operation.

[0007] Specifically, the self-sealing valve mechanism includes a double-valve valve made of elastic material for sealing the fluid passage. The double-valve valve is closed under the action of its own elastic force and pre-pressing spring. The closing surface of the double-valve valve is at an angle of 30° to 70° with respect to the fluid flow direction, so that when the fluid pressure acts on the closing surface, a positive pressure that enhances the sealing effect is generated.

[0008] Specifically, the linkage mechanism includes a thimble provided inside the second connecting component and having magnetism, the magnetic poles of the first annular magnet and the thimble are arranged to repel each other, and the bottom of the thimble is connected to a spring for driving the thimble to lift the self-sealing valve mechanism when connected. When the operator moves the first connector and the second connector close to each other, the first annular magnet and the second annular magnet provided inside the first connector and the second connector start to act. The magnets are preferably radially magnetized or axially multi-pole magnetized, and during the pulling and closing process, the linkage mechanism is triggered. Specifically, the thimble provided inside the second connecting component moves relative to the second connector housing in the last stage of combination. Due to the support force of the spring at the bottom of the thimble and the repulsion force between the magnetic top end of the thimble and the first annular magnet, the thimble remains in a retracted stable state at the initial stage of the connector approaching. When the first connecting component and the second connecting component are attracted, the repulsion force decreases, the compressed spring pushes the thimble, the thimble extends into the first connecting component and lifts the double-valve valve of the first connecting component, and 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 assembly is greater than the sum of the opening force of the self-sealing valve mechanism, the magnetic repulsion force between the thimble and the first annular magnet, and the pressure of the spring driving the thimble in the lifting state.

[0010] Specifically, a rotation unlocking mechanism is arranged between the first connecting component and the second connecting component, and the rotation unlocking mechanism comprises a protrusion and an L-shaped guide groove matched with the protrusion. When disassembling, the infusion pipeline is slightly rotated relative to the quick-release infusion connecting device, so that the first connecting component and the second connecting component are relatively rotated to an unlocking position, the slider is actuated, and the first connector and the second connector are pulled to two sides. The protrusion slides along the transverse segment of the L-shaped guide groove, drives the ejector pin to retract under the action of the spring, and the double-valve valve is closed before the complete separation of the first connecting component and the second connecting component.

[0011] Specifically, a fixing assembly is sleeved on the first connector and / or the second connector, the fixing assembly comprises a slider and a ball, the slider is slidably arranged, and a protrusion structure is arranged on the inner surface of the slider; the protrusion structure can limit the ball by sliding the slider, so as to realize the connection and disconnection between the first connector and the second connector. The fixing assembly further comprises an elastic member, and the elastic member can move synchronously under the driving of the slider. The outer periphery of the second connector is provided with a recess for accommodating the ball. When the slider slides to a locking position, the protrusion structure makes the ball partially embedded in the recess, so as to realize the connection and disconnection.

[0012] Although the magnetic attraction assembly can provide convenient connection guidance and main attraction force, there is still a risk of accidental separation when an unexpected axial tension or system vibration is applied. The fixing assembly can press the ball into and limit the corresponding recess in the outer periphery of the second connector by sliding the slider and using the protrusion structure on the inner surface of the slider, thereby forming an independent and purely mechanical rigid lock. When connecting, the magnetic attraction assembly first plays a role to realize quick self-alignment and preliminary attraction, and pre-fixes the two connectors in the correct position. At this time, the user slides the slider to complete the final locking. This provides double insurance for the connection state, effectively prevents the connectors from being pulled off due to external force, pipeline pulling or accidental collision, and is especially suitable for patients on the move or infusion scenes during transportation, thereby fundamentally improving the reliability and safety of use. The combination of the slider and the ball can be sleeved outside the connector shell without significantly increasing the radial size of the connector, thereby realizing the strengthening of the function and the miniaturization of the overall structure, facilitating hand operation, and conforming to the development trend of light and portable medical equipment.

[0013] The core advantage of the present application is that: by setting the radial symmetry magnetic attraction assembly in the first and second connecting components, the magnetic force is used to automatically guide and attract, so that the two can be quickly and accurately aligned and preliminarily fixed, and the connection operation is simplified; by setting the self-sealing valve mechanism in the first connecting component, it is ensured that the valve can be closed before the physical disconnection of the fluid channel during the disconnection of the connector, so as to prevent the leakage of the liquid medicine caused by the positive pressure or gravity in the container when the infusion pipeline is pulled out; the magnetic attraction alignment function and the built-in sealing valve are integrated in the compact connector structure, while pursuing the convenience of "quick disassembly", the sealing reliability of the connection process and the no-leakage safety of the disconnection are ensured, and the overall reliability of the infusion process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0015] Figure 1 It is the overall structure diagram of the present application.

[0016] Figure 2 It is the schematic diagram of the first connecting component of example one.

[0017] Figure 3 It is the schematic diagram of the second connecting component of example one.

[0018] Figure 4 It is the schematic diagram of the first connecting component and the second connecting component and the rotating unlocking mechanism of example one.

[0019] Figure 5 It is the schematic diagram of the thimble of example one.

[0020] Figure 6 It is the schematic diagram of the first annular magnet and the second annular magnet before connection.

[0021] Figure 7 It is the schematic diagram of the first annular magnet and the second annular magnet during connection.

[0022] Figure 8 It is the schematic diagram of the first annular magnet and the second annular magnet after connection.

[0023] Figure 9 It is the schematic diagram of the fixed assembly during connection.

[0024] Figure 10 It is the schematic diagram of the fixed assembly 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 See Figures 1-3The utility model provides a kind of quick-release infusion connecting device, including the first connector 1 for connecting infusion container outlet and the second connector 2 for connecting infusion pipeline entrance, the first connector 1 and the second connector 2 are respectively equipped with the first connecting component 11 and the second connecting component 21 that are connected with each other, the first connecting component 11 and the second connecting component 21 are respectively provided with first annular magnet 31 and second annular magnet 32 constitute radial symmetry magnetic suction assembly 3, for realizing the adsorption alignment and connection fixed between the first connecting component 11 and the second connecting component 21;The inside of the first connecting component 11 is provided with self-sealing valve mechanism 112.The magnetic suction assembly 3 includes first annular magnet 31 and second annular magnet 32 respectively embedded in the shell of the first connecting component 11 and the second connecting component 21, and the magnetic poles of the first annular magnet 31 and the second annular magnet 32 are arranged to attract each other.The outer surface of the first annular magnet 31 and the second annular magnet 32 is covered with a biocompatible sealing layer to isolate it from the liquid in the flow channel.The quick-release infusion connecting device of the utility model, its core working principle lies in ensuring that fluid channel can be quickly and automatically aligned and established when being connected through the cooperation of magnetic suction assembly 3 and linkage mechanism, and self-sealing valve mechanism 112 can be closed before the physical disconnection of fluid channel when being disconnected, so as to avoid liquid leakage.

[0029] Specifically, the first connecting component 11 and the second connecting component 21 are attracted to each other by the magnetic suction assembly 3, triggering the linkage mechanism to open the self-sealing valve mechanism 112 and form a fluid channel; when the first connecting component 11 and the second connecting component 21 are separated, the self-sealing valve mechanism 112 closes before the physical disconnection of the fluid channel. The scheme of the utility model ensures that the flow channel is reliably cut off before the two parts of the connector are completely separated, effectively blocking the direct contact between external air and internal liquid of the pipeline, which solves a core pain point that has plagued the clinical infusion field for many years: at the moment of removing the traditional infusion connector, the liquid medicine is prone to leak from the removed connector due to the residual positive pressure in the infusion container or the action of gravity. The utility model makes the removal action itself no longer accompanied by liquid dripping, improving the safety and standardization of operation.

[0030] Specifically, the self-sealing valve mechanism 112 includes a double-valve valve made of elastic material for sealing the fluid channel. The double-valve valve is closed under the action of its own elasticity and pre-pressing spring. The closing surface of the double-valve valve is at an angle of 30° to 70° to the direction of fluid flow, so that when fluid pressure acts on the closing surface, a positive pressure that enhances the sealing effect is generated.

[0031] Reference Figure 3 and Figure 5, the linkage mechanism includes a plunger 212, which is arranged inside the second connector 2 and has magnetism, the magnetic poles of the first annular magnet 31 and the plunger 212 are arranged to repel each other, the bottom of the plunger 212 is connected to a spring 213, which is used to drive the plunger 212 to open the self-sealing valve mechanism 112 when connected. When the operator brings the first connector 1 and the second connector 2 close to each other, the first annular magnet 31 and the second annular magnet 32 arranged inside them start to act. The magnets are preferably radially magnetized or axially multi-pole magnetized. During the pulling-together process, the linkage mechanism is triggered. Figure 6 、 Figure 7 、 Figure 8 are respectively the schematic diagrams of the relative positions of the first annular magnet 31 and the second annular magnet 32 before connection, during connection and after connection. Specifically, the plunger 212 arranged inside the second connector 2 moves relative to the shell of the second connector 2 in the last stage of combination. Because the plunger 212 is supported by the spring 213 at its bottom and the repulsion force between its magnetic top end and the first annular magnet 31, it remains in a stable state of retraction at the initial stage of the connector approaching. After the first connector 11 and the second connector 21 are attracted, the repulsion force decreases, the compressed spring 213 pushes the plunger 212, the plunger 212 extends into the first connector 11 and opens the double-valve valve at the same time, and the opening action of the self-sealing valve mechanism 112 is completed at the moment of connection.

[0032] Specifically, the maximum magnetic attraction force generated by the magnetic attraction assembly 3 is greater than the sum of the opening force of the self-sealing valve mechanism 112, the magnetic repulsion force between the plunger 212 and the first annular magnet 31, and the pressure of the spring 213 driving the plunger 212 in the open state.

[0033] Referring to Figure 4, the first connecting part 11 and the second connecting part 21 are provided with a rotation unlocking mechanism 4, which comprises a protrusion 41 and an L-shaped guide groove 42 matched therewith. Specifically, the first connector 1 is provided with a first thread 12 in the shell thereof for connection with an infusion container. The second connector 2 is provided with a second thread 22 in the shell thereof for connection with an infusion pipeline. The first connecting part 11 is mounted in the first connector 1 through a bearing, a bushing or a loose-fit guide structure, so that it can rotate relatively in the shell of the first connector 1. The second connecting part 21 has the same connection relationship with the shell of the second connector 2. The outer circumference of the second connecting part 21 is provided with a key groove structure for circumferential limiting, which is matched with a corresponding structure on the inner wall of the infusion pipeline. When disassembling, the infusion pipeline is slightly rotated relative to the quick-release infusion connecting device, so that the first connecting part 11 and the second connecting part 21 are relatively rotated to an unlocking position, the slider 51 is actuated, and the first connector 1 and the second connector 2 are pulled to both sides. The protrusion 41 slides along the horizontal segment of the L-shaped guide groove 42, drives the thimble 212 to retract under the action of the spring 213, and the double-valve valve is closed before the complete separation of the first connecting part 11 and the second connecting part 21. The retraction mechanism of the thimble 212 is as follows: when the protrusion 41 slides along the horizontal segment of the L-shaped guide groove 42, the shell of the second connecting part 21 is axially displaced relative to the thimble 212, that is, the shell moves backward, at this time, the tip of the thimble 212 is hindered because it is still in the self-sealing valve mechanism 112, which causes the spring 213 at the bottom of the thimble 212 to be further stretched and then retracted; as the separation action continues, when the tip of the thimble 212 exits from the self-sealing valve mechanism 112 to a critical point, the double-valve valve is instantaneously closed under the action of its strong elastic restoring force, after the valve is closed, the hindering force of the valve to the tip of the thimble 212 disappears immediately; at this time, the thimble 212 moves backward and quickly retracts to the initial position in the shell of the second connecting part 21. Through forced displacement of the mechanical structure and release of spring energy, the design ensures that the thimble 212 will necessarily retract during disassembly, so as to ensure that the self-sealing valve mechanism 112 can be reliably closed before the physical disconnection of the fluid passage.

[0034] Referring to Figure 1 , Figure 9 and Figure 10The first connector 1 and / or the second connector 2 is sleeved with a fixing assembly 5, the fixing assembly 5 comprises a sliding block 51 and a ball 53, the sliding block 51 is slidably arranged, and the inner surface of the sliding block 51 is provided with a convex structure; by sliding the sliding block 51, the convex structure can limit the ball 53, so as to realize the connection and disconnection between the first connector 1 and the second connector 2. The fixing assembly 5 further comprises an elastic member 52, which can be synchronously moved under the driving of the sliding block 51. The outer periphery of the second connector 2 is provided with a recess for accommodating the ball 53. When the sliding block 51 slides to the locking position, the convex structure makes the ball 53 partially embedded in the recess, so as to realize the connection and fixation. When disassembling, the user needs to rotate the first connecting part 11 and the second connecting part 21 relatively, so that the convex part 41 moves to the entrance of the horizontal section of the L-shaped guide groove 42 along the vertical section, and the axial locking of the magnetic assembly 3 is released; then, the sliding block 51 is slid again, and the ball 53 is released from the limitation, so that the first connector 1 and the second connector 2 can be completely separated. This process drives the ejector pin 212 to retract, the self-sealing valve mechanism 112 is closed, and the first connecting part 11 and the second connecting part 21 are connected with the first damping element 13 and the second damping element 23 respectively, which can play a buffering role and eliminate vibration.

[0035] Although the magnetic assembly 3 can provide convenient connection guidance and main adsorption force, there is still a risk of accidental separation when subjected to unexpected axial tension or system vibration. The fixing assembly 5 can press the ball 53 into and limit the corresponding recess in the outer periphery of the second connector 2 by sliding the sliding block 51, and form an independent and purely mechanical rigid locking. When connecting, the magnetic assembly 3 first plays a role, realizes rapid self-alignment and preliminary adsorption, and pre-fixes the two connectors in the correct position, at this time, the user slides the sliding block 51 to complete the final locking. This provides double insurance for the connection state, effectively prevents the connectors from being disconnected due to external force pulling, pipeline pulling or accidental collision, is especially suitable for patients in motion or infusion scenes in transit, and fundamentally improves the reliability and safety of use. The combination of the sliding block 51 and the ball 53 can be sleeved outside the connector shell, without significantly increasing the radial size of the connector, realizing the strengthening of the function and the miniaturization of the overall structure, facilitating hand operation, and meeting the development trend of light and portable medical equipment.

[0036] Embodiment two On the basis of embodiment one, this embodiment further optimizes the cooperation design of 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 when disassembled, thereby further improving the reliability of the anti-leakage. The double-valve structure of the self-sealing valve mechanism 112 is integrally formed by high-rebound and fatigue-resistant medical-grade silicone, and the closed port is in close 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 back, and the ejector pin 212 is eccentrically arranged. To achieve stable retention 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 pries open the double-valve during connection and makes the cylindrical positioning section completely pass through the valve closed port, the elastic deformation of the double-valve material will exert uniform radial holding force on it, and the resulting static friction force constitutes an axial lock for the ejector pin 212, effectively preventing accidental retraction or movement due to pipeline vibration or pressure fluctuations, and ensuring the stable and smooth flow of the fluid passage. During disassembly, when user operation causes the second connector component housing 211 to rotate relative to the first connector component housing 111, causing eccentric displacement between the ejector pin 212 and the self-sealing valve mechanism 112, the contact area between the double-valve and the ejector pin 212 is sharply reduced, and the radial holding force and axial friction force decay accordingly. 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 to complete the retraction and reset. At the same time, the double-valve quickly and completely closes due to its strong elastic restoring force after losing support. Through the above design, the system can provide strong holding force when connected, and only needs to be rotated to trigger the instantaneous switching of the force to achieve "micro-motion escape" when disassembled, which makes the closing action of the self-sealing valve mechanism 112 more sensitive.

[0037] The rotation unlocking mechanism 4 includes a protrusion 41 and a matching L-shaped guide groove 42, the vertical section of the L-shaped guide groove 42 is provided with 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 is provided with scale marks of the unlocking position, the first locking position and the second locking position. When disassembling the connection device, two steps need to be performed in sequence: First step: User operates to rotate the infusion pipeline relative to the quick-release infusion connection device, which drives 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 rotate 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 limits axial movement to the horizontal section that allows axial movement, completing the rotation unlocking. At this time, the needle 212 retracts, and the self-sealing valve mechanism 112 reliably closes before the physical disconnection of the fluid passage, thereby cutting off the drug liquid flow path. The two connectors are only connected by the magnetic force of the magnetic assembly 3 and the mechanical locking of the fixing assembly 5.

[0038] Second step: Then, the user slides the slider 51 of the fixing assembly 5 to release the radial limitation of the billiard ball 53. The billiard ball 53 is released from the recess on the outer periphery of the second connector 2 under the action of elasticity, and the final mechanical locking between the first connector 1 and the second connector 2 is released. After completing this operation, the user can easily separate the first connector 1 and the second connector 2 along the axial direction.

[0039] The above-described embodiments and / or implementations are only used to illustrate the preferred embodiments and / or implementations of the present application, and do not limit the embodiments of the present application in any form. Any person skilled in the art can make some changes without departing from the scope of the technical means disclosed in the present application, but still should be considered as the same technology or embodiment as the present application.

[0040] The principles and implementations of the present application are described by using specific examples in this paper. The above example is only used to help understand the method and its core idea of the present application. The above-mentioned is only the preferred embodiment of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures. For ordinary skilled person in the art, without departing from the principle of the present application, some improvements, refinements or changes can be made, and the above technical features can be combined in appropriate ways. These improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be considered as the protection scope of the present 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 realizing the 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).

2. The quick-release infusion connection device according to claim 1, characterized in that, The first connecting component (11) and the second connecting component (21) approach each other through the adsorption of the magnetic component (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) separate, the self-sealing valve mechanism (112) closes before the physical disconnection of the fluid channel.

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

4. The quick-release infusion connection device according to claim 3, 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.

5. The quick-release infusion connection device according to claim 2, characterized in that, The linkage mechanism includes a push 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 push pin (212) are arranged to repel each other. A spring (213) is connected to the bottom of the push pin (212), and the spring (213) is used to drive the push pin (212) to open the self-sealing valve mechanism (112) when connected.

6. The quick-release infusion connection device according to claim 5, characterized in that, 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.

7. 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.

8. 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).

9. The quick-release infusion connection device according to claim 8, characterized in that, The fixing component (5) also includes an elastic element (52), which can move synchronously under the drive of the slider (51).

10. The quick-release infusion connection device according to claim 8, characterized in that, The outer periphery of the second connector (2) is provided with a recess for accommodating the ball (53).

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