An intravenous infusion aid

Abstract

This utility model discloses an intravenous infusion assistive device, belonging to the field of medical auxiliary device technology. It includes a control component and a tightening band. The control component houses a processor and a locking mechanism. A limiting groove is formed on the upper surface of the control component, and a connecting portion with a connecting slot is provided at one end of the bottom of the control component near the limiting groove. One end of the tightening band has a first plug that inserts into the connecting slot, and the other end has an L-shaped second plug. The horizontal section of the second plug is slidably disposed within the limiting groove and is controlled to lock or release by the locking mechanism. The extension section of the second plug extends downwards from the side of the control component to the bottom. The end of the tightening band connected to the second plug is fixed to a connecting post thereon. In the locked state, the bottom end of the extension section is adjacent to the connecting portion, and their bottom surfaces are coplanar. This device, by concentrating the connection points on the control component at the bottom and keeping them coplanar, shortens the length of the rigid section of the control component in the tightening path, improving wearing comfort and limb fit.

Description

Technical Field

[0001] This utility model belongs to the field of medical auxiliary devices for intravenous puncture, and specifically relates to an intravenous infusion auxiliary device. Background Technology

[0002] A tourniquet is an important auxiliary device used in clinical venous puncture procedures to promote venous filling. It is used in conjunction with infusion sets, syringes, and other venous puncture instruments to establish venous access or to introduce medications, blood products, and other media into the patient's body. Traditional elastic tubing or silicone tourniquets, while simple in structure, rely entirely on manual release by the operator. In the fast-paced environment of clinical work, incidents of patients being subjected to prolonged pressure on their limbs due to forgetting to release the tourniquet, leading to local ischemia or even tissue damage, are not uncommon. Therefore, in recent years, intelligent tourniquets with automatic timing and active release functions have emerged. These tourniquets use a built-in processor to control the locking mechanism, automatically releasing the tourniquet when the preset compression time is reached, effectively avoiding safety hazards caused by human negligence.

[0003] To achieve automatic control, existing smart compression bandages typically integrate a control unit at the buckle location, housing a power supply, control circuitry, alarm elements, and actuators. This control unit is inevitably made of rigid material to protect the internal electronic components. In current technology, the rigid control unit is often completely connected in series within the bandage's tightening path, with its two ends connected to the ends of the bandage. In this configuration, the rigid casing is tightened along with the bandage onto the limb surface, easily creating a noticeable pressure sensation in certain areas. This is especially true in puncture scenarios requiring a certain tightening force to fill blood vessels, where the edges and corners of the rigid control unit exert concentrated pressure on subcutaneous tissue, causing discomfort and even pain to the patient. Furthermore, due to the large span of the rigid control unit along the limb's circumference, the bandage struggles to conform to the natural curvature of the limb surface when wrapped around it, easily creating areas of suspension or excessive pressure below or at both ends of the control unit. This affects wearing comfort and hinders the stable fixation of the compression bandage. Therefore, there is an urgent need to improve the existing technology to solve the problems of obvious local pressure on the limbs and poor fit of the belt caused by the rigid control components in the intelligent pressure belt being connected in series in the tightening path. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an intravenous infusion auxiliary device to solve the problems of obvious local pressure on the limb and poor fit of the strap in intelligent pressure straps used in conjunction with intravenous puncture instruments such as infusion sets and syringes, where the rigid control components are connected in series in the tightening path.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an intravenous infusion auxiliary device, comprising a control component and a tightening band, wherein the control component is provided with a processor and a locking mechanism communicatively connected to the processor; The upper surface of the control component is provided with a limiting groove extending along its length direction, and the bottom of the control component is provided with a connecting part near the limiting groove, and the connecting part is provided with a connecting slot. One end of the tightening band is fixedly provided with a first plug that can be detachably inserted into the connecting slot, and the other end of the tightening band is fixedly provided with a second plug; The second plug has an L-shaped structure and includes a horizontal section and an extension section connected to each other. The horizontal section is slidably disposed in the limiting groove and configured to be locked or released by the locking mechanism. The extension section extends from one end of the horizontal section around the side of the control member and downward to the bottom of the control member. The bottom end of the extension section is bent away from the control member to form a connecting post. The end of the tightening band that is connected to the second plug is fixedly connected to the connecting post. With the locking mechanism locking the second plug, the bottom end of the extension section is adjacent to the connecting part, and the bottom surface of the extension section and the bottom surface of the connecting part are at the same height plane.

[0006] Preferably, the connecting part includes a first connecting part and a second connecting part. The first connecting part is fixedly disposed at the bottom of the control component, and the second connecting part is detachably plugged into the first connecting part. The connecting slot is opened on the side of the second connecting part. The first connecting part has a T-shaped block structure, and the second connecting part has a T-shaped groove adapted to the T-shaped block structure.

[0007] Preferably, the bottom surface of the second connecting portion is configured as an inwardly concave arc surface.

[0008] Preferably, the bottom surface of the horizontal section of the second plug is provided with a snap-fit ​​groove. The locking mechanism includes a movable boss, an iron core, an induction coil, and a pre-compression elastic component. The induction coil is connected to the processor and spirally surrounds the iron core. The movable boss is slidably sleeved on the upper end of the iron core. One end of the pre-compression elastic component abuts against the movable boss, and the other end is fixed inside the control component. When the locking mechanism locks the second plug, the movable boss is driven by the elastic force of the pre-compression elastic component to embed into the snap-fit ​​groove. When the induction coil is energized, the movable boss can move against the elastic force of the pre-compression elastic component under the magnetic adsorption of the iron core to disengage from the snap-fit ​​groove.

[0009] Preferably, a second button is provided in the snap-fit ​​groove, and the second button is slidably disposed along the axial direction of the snap-fit ​​groove. When the second button is pressed, it pushes the movable boss away from the snap-fit ​​groove.

[0010] Preferably, the limiting slide groove has slide rails on both longitudinal sides, and the horizontal section of the second plug has stop bosses on both longitudinal sides. The stop bosses have slide grooves that cooperate with the slide rails. The outer lateral end of the limiting slide groove has a stop groove. When the locking mechanism is released from locking the second plug, the horizontal section of the second plug can slide along the slide rails and the stop bosses can be embedded in the stop grooves.

[0011] Preferably, the tightening band is further provided with a locking ring, which is located between the first plug and the second plug, and the tightening band passes through the locking ring and folds around the locking ring.

[0012] Preferably, the top of the control unit is provided with a display, and the control unit is provided with a sound-emitting device, the display and the sound-emitting device being connected to the processor respectively.

[0013] The core of the intravenous infusion auxiliary device disclosed in this utility model is to move the connecting slot from the end of the control component to the connecting part at the bottom of the control component, and at the same time set the second plug as an L-shaped structure, so that the horizontal section of the second plug slides in the limiting groove on the upper surface of the control component, while the extension section extends downward to the bottom around the side of the control component, so that both ends of the tightening band body connected to the control component are located at the bottom of the control component, and the connecting post at the bottom end of the extension section is closely adjacent to the connecting part and keeps the bottom surface coplanar. Compared with existing technologies, this invention has significant advantages: by setting the connection points of both ends of the tightening band and the control component at the bottom of the control component and keeping them coplanar, the rigid control component is no longer connected in series in the tightening path of the band in the form of a long segment. When the device is used with an infusion set or syringe for venous puncture, the control component is mainly located on one side of the limb rather than embedded in the force-bearing segment of the tightening path when the band wraps around the limb, effectively reducing the direct pressure of the rigid component on the limb surface. At the same time, since the connection points at both ends of the band are located on the same height plane and are close to each other, the band can more naturally conform to the curvature of the limb surface when wrapped, avoiding local suspension or excessive pressure caused by the excessive span of the rigid segment, improving the patient's wearing comfort and the stability of the device, thereby providing reliable venous filling conditions for subsequent infusion or blood collection operations. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of the intravenous infusion auxiliary device provided in the embodiment of this utility model in the locked state.

[0015] Figure 2A schematic diagram of the overall structure of the intravenous infusion auxiliary device provided in the embodiment of this utility model in the released state.

[0016] Figure 3 This is an exploded structural diagram of the intravenous infusion auxiliary device provided in an embodiment of the present invention.

[0017] Figure 4 This is a partial cross-sectional view of the internal structure of the control component provided in an embodiment of the present utility model.

[0018] The reference numerals in the attached figures are explained as follows: 1. Control component; 11. Connecting slot; 12. Limiting groove; 121. Locking mechanism; 122. Movable boss; 123. Iron core; 124. Induction coil; 125. Pre-compression elastic component; 126. Slide rail; 127. Stop groove; 13. Display; 14. Sound generating device; 2. Tightening strap body; 21. First plug; 22. Locking ring; 23. Second plug; 231. Connecting post; 232. Snap-fit ​​groove; 233. Second button; 234. Stop boss; 235. Slide groove; 3. Connecting part; 31. First connecting part; 32. Second connecting part. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0021] In existing smart compression cuffs used with intravenous puncture devices such as infusion sets and syringes, the control component consists of a long, rigid segment connected in series in the tightening path of the cuff. This causes the rigid component to exert localized pressure on the limb surface, and the cuff body is difficult to conform to the natural curvature of the limb. Therefore, to address these problems in the related technology, this application provides an intravenous infusion assistance device, such as... Figure 1 and Figure 2As shown, the device includes a control component 1 and a tightening strap 2. The control component 1 contains a processor and a locking mechanism 121 that communicates with the processor. A limiting groove 12 extending along the length of the control component 1 is formed on its upper surface. A connecting portion 3 is provided at the bottom of the control component 1 near the limiting groove 12, and a connecting slot 11 is formed on the connecting portion 3. A first plug 21, which can be detachably inserted into the connecting slot 11, is fixedly provided at one end of the tightening strap 2, and a second plug 23 is fixedly provided at the other end of the tightening strap 2. The second plug 23 has an L-shaped structure and includes a horizontal section and an extension section connected to each other. The horizontal section is slidably disposed within the limiting groove 12 and configured to be locked or released by the locking mechanism 121. The extension section extends downward from one end of the horizontal section, around the side of the control component 1, to the bottom of the control component 1. The bottom end of the extension section is bent away from the control component 1 to form a connecting post 231. The end of the tightening strap 2 connected to the second plug 23 is fixedly connected to the connecting post 231. With the second plug 23 locked by the locking mechanism 121, the bottom end of the extension section is adjacent to the connecting part 3, and the bottom surface of the extension section and the bottom surface of the connecting part 3 are at the same height plane. The processor is configured to start timing after receiving the tightening start signal, and when the timing reaches the preset venous filling time, control the locking mechanism 121 to release the lock so that the operator can perform subsequent infusion or injection operations.

[0022] Specifically, the control component 1 has a block or box-shaped structure, and a battery and processor are installed inside. The battery is a rechargeable battery, and a charging interface is provided on the housing of the control component 1. The limiting groove 12 is a strip-shaped groove structure formed on the upper surface of the control component 1 and extending along the length of the control component 1. The connecting part 3 is located at the bottom of the control component 1, at one end of the control component 1 near the limiting groove 12. The tightening strap 2 is a flat, long strip-shaped strap made of an elastic material. The first plug 21 is fixed to one end of the tightening strap 2, and its shape is adapted to the connecting slot 11, allowing it to be inserted into the connecting slot 11 for detachable connection. The second plug 23 is an L-shaped integral structure, with its horizontal section located within the limiting groove 12 and able to slide along the groove direction. Before the puncture operation, the user pushes the horizontal section of the second plug 23 into the limiting groove 12, so that the locking mechanism 121 locks the horizontal section within the limiting groove 12. At this time, the extension section of the second plug 23 is located on the side of the control member 1 and extends downward to the bottom. The connecting post 231 is adjacent to the connecting part 3, and their bottom surfaces are coplanar. After the user pulls the free end of the tightening band 2 to tighten the limb, the puncture operation can be performed. After the puncture is completed, the processor controls the locking mechanism 121 to release the locking of the second plug 23. Under the action of the band's rebound force, the second plug 23 slides outward along the limiting groove 12, and the tightening band 2 is released from its tightening state.

[0023] In the above technical solution, since the connection points of the belt at both ends of the control member 1 are located at the bottom of the control member 1, and the connecting post 231 and the connecting part 3 are arranged adjacent to each other and keep coplanar, the control member 1 is no longer embedded in the tightening path of the belt in the form of a long segment. When the belt is tightened, the pressure of the rigid control member 1 on the limb is relieved. At the same time, the connection positions at both ends of the belt are at the same height, so that the belt can extend more naturally along the surface of the limb when it wraps around the limb, and the fit is improved.

[0024] The present invention further proposes that the connecting part 3 includes a first connecting part 31 and a second connecting part 32. The first connecting part 31 is fixedly disposed at the bottom of the control component 1, and the second connecting part 32 is detachably plugged into the first connecting part 31. The connecting slot 11 is opened on the side of the second connecting part 32. The first connecting part 31 has a T-shaped block structure, and the second connecting part 32 has a T-shaped groove adapted to the T-shaped block structure.

[0025] Specifically, such as Figure 4 As shown, the first connecting part 31 is a T-shaped protrusion fixed to the bottom surface of the control component 1, and the second connecting part 32 is a block-shaped component independent of the control component 1, with a T-shaped groove on it. Through the insertion and engagement of the T-shaped groove and the T-shaped protrusion, the second connecting part 32 can be slidably installed on the bottom of the control component 1 along the extension direction of the first connecting part 31. The connecting slot 11 is opened on the side of the second connecting part 32 for the first plug 21 to be inserted. With this detachable structure, the user can remove the second connecting part 32 together with the first plug 21 and the tightening strap 2 from the control component 1 as a whole, which facilitates the cleaning, disinfection or replacement of the tightening strap 2, while effectively protecting the electronic components inside the control component 1.

[0026] In one specific implementation, the bottom surface of the second connecting part 32 is coplanar with the bottom surface of the first connecting part 31 in the installed state, ensuring that after the tightening strap 2 is connected to the control component 1, the strap on the first plug 21 side and the strap on the second plug 23 side are at the same height plane, so as to ensure the fit of the strap when it is wrapped.

[0027] In the above technical solution, the detachable connecting part structure allows the tightening band to be separated from the control component, which facilitates the independent cleaning, disinfection and replacement of the tightening band. At the same time, the control component can be reused, reducing the cost of use.

[0028] The present invention further proposes that the bottom surface of the second connecting part 32 is configured as an inwardly concave arc surface.

[0029] The bottom surface of the second connecting part 32 faces the skin of the limb when in use. The concave direction of this arc surface is towards the inside of the control member 1, that is, towards the direction away from the limb. The curvature of this arc surface can be designed according to the curvature of common human limb surfaces, so that the bottom surface of the second connecting part 32 can form surface contact with the limb surface rather than point contact or line contact when the belt is tightened, thereby dispersing local pressure.

[0030] In the above technical solution, the curved structure makes the second connecting part fit more closely with the surface of the limb, further reducing the concentrated pressure of the hard parts on the limb and improving wearing comfort.

[0031] The present invention further proposes that the bottom surface of the horizontal section of the second plug 23 is provided with a snap-fit ​​groove 232, and the locking mechanism 121 includes a movable boss 122, an iron core 123, an induction coil 124, and a pre-compression elastic component 125. The induction coil 124 is connected to the processor and is spirally arranged around the iron core 123. The movable boss 122 is slidably sleeved on the upper end of the iron core 123. One end of the pre-compression elastic component 125 abuts against the movable boss 122, and the other end of the pre-compression elastic component 125 is fixed to the control component 1. When the locking mechanism 121 locks the second plug 23, the movable boss 122 is driven by the elastic force of the pre-compression elastic component 125 to embed into the snap-fit ​​groove 232. When the induction coil 124 is energized, the movable boss 122 can overcome the elastic force of the pre-compression elastic component 125 and move under the magnetic adsorption of the iron core 123 to disengage from the snap-fit ​​groove 232.

[0032] Specifically, such as Figure 3 and Figure 4As shown, the locking mechanism 121 is located inside the control component 1 and below the limiting slide groove 12. The iron core 123 is vertically disposed inside the control component 1, and the induction coil 124 is arranged around the iron core 123 and electrically connected to the processor. The movable boss 122 has a columnar structure, is sleeved on the upper end of the iron core 123, and can slide vertically up and down. The pre-compression elastic component 125 is a compression spring, its lower end fixed to the bottom wall inside the control component 1, and its upper end abutting against the lower end face of the movable boss 122, constantly applying an upward elastic thrust to the movable boss 122. In the initial state, the induction coil 124 is not energized, and the movable boss 122 extends upward into the limiting slide groove 12 under the thrust of the pre-compression elastic component 125. When the horizontal section of the second plug 23 slides along the limiting groove 12 to the position where the locking groove 232 aligns with the movable boss 122, the movable boss 122, driven by the elastic force of the pre-pressed elastic component 125, inserts upward into the locking groove 232, thus locking the second plug 23. When the preset pressing time is reached or the user triggers a release command, the processor controls the induction coil 124 to be energized, and the iron core 123 generates an electromagnetic attraction force to attract the movable boss 122 downward, causing the movable boss 122 to disengage from the locking groove 232, releasing the lock, and allowing the second plug 23 to slide outward along the limiting groove 12.

[0033] In the above technical solution, the movable boss is driven to extend and retract through electromagnetic induction to lock and release the second plug. It has a rapid response and compact structure, which is conducive to the miniaturization design of the control components. At the same time, the electromagnetic control method makes it easy for the processor to accurately control the timing of unlocking.

[0034] The present invention further proposes that a second button 233 is provided in the snap-fit ​​groove 232. The second button 233 is slidably arranged along the axial direction of the snap-fit ​​groove 232. When the second button 233 is pressed, it pushes the movable boss 122 to disengage from the snap-fit ​​groove 232.

[0035] The second button 233 is installed within the latching slot 232 and can slide up and down within it. The upper end of the second button 233 protrudes from the upper surface of the horizontal section of the second plug 23, allowing the user to press it. When the movable boss 122 is engaged in the latching slot 232, the user presses the second button 233 downwards, causing the lower end of the second button 233 to push the movable boss 122 downwards, disengaging it from the latching slot 232. This manual release mechanism serves as a backup for the electromagnetic automatic release, allowing for manual release of the device's tightening state when necessary.

[0036] The present invention further proposes that the limiting slide groove 12 is provided with slide rails 126 on both longitudinal sides, and the horizontal section of the second plug 23 is provided with stop bosses 234 on both longitudinal sides, and the stop bosses 234 are provided with slide grooves 235 that cooperate with the slide rails 126; the outer lateral end of the limiting slide groove 12 is provided with a stop groove 127. When the locking mechanism 121 releases the locking of the second plug 23, the horizontal section of the second plug 23 can slide along the slide rails 126 and the stop bosses 234 are embedded in the stop grooves 127.

[0037] Specifically, such as Figure 3 As shown, the slide rail 126 is a guide rail structure provided along the longitudinal side walls of the limiting slide groove 12, and its cross-section is T-shaped or L-shaped. The stop boss 234 is a block-shaped structure that protrudes outward from both sides of the longitudinal direction of the horizontal section of the second plug 23. The slide groove 235 opened on the stop boss 234 is adapted to the shape of the slide rail 126, so that the horizontal section of the second plug 23 can slide stably along the slide rail 126 without disengaging from the limiting slide groove 12 in the vertical direction. The stop groove 127 is a recessed structure provided at the bottom of the transverse outer end (i.e., the end away from the connecting part 3) of the limiting slide groove 12. When the locking mechanism 121 is released, the rebound force of the tightening strap 2 pulls the second plug 23 away from the connecting part 3. The second plug 23 slides outward along the slide rail 126 until the stop boss 234 is embedded in the stop groove 127. At this time, the second plug 23 stops sliding, but has not completely disengaged from the limiting slide groove 12.

[0038] In the above technical solution, the cooperation structure of the slide rail and the slide groove ensures the movement stability of the second plug during the sliding process and prevents the second plug from shaking or tilting when it is unlocked; the setting of the stop groove provides a limiting and temporary holding function when the second plug slides outward to the limit position, preventing the second plug from completely coming out of the limiting slide groove and facilitating the next use of the device.

[0039] The present invention further proposes that the tightening band 2 is also provided with a locking ring 22, which is located between the first plug 21 and the second plug 23. The tightening band 2 passes through the locking ring 22 and folds around the locking ring 22.

[0040] The locking ring 22 is a ring-shaped structure fitted onto the tension band 2. Its inner diameter is larger than the width and thickness of the tension band 2, allowing the tension band 2 to pass through freely. In the assembled state, one end of the tension band 2 is fixed to the connecting post 231 of the second plug 23. The other end of the tension band 2 first passes through the locking ring 22, then around the first plug 21, and then passes through the locking ring 22 again, finally emerging from the locking ring 22 to form a free end. In use, the user pulls this free end, and the tension band 2 tightens at the locking ring 22, causing the entire band to contract and tighten the limb.

[0041] In the above technical solution, the roundabout cooperation between the locking ring and the tightening band enables stepless adjustment of the band length, allowing users to flexibly adjust the tightness according to the thickness of the patient's limb, making the operation convenient.

[0042] The present invention further proposes that the top of the control component 1 is provided with a display 13, and the control component 1 is provided with a sound-emitting device 14. The display 13 and the sound-emitting device 14 are respectively connected to the processor. When the processor times out the preset venous filling time, the processor controls the sound-emitting device 14 to emit a venous puncture ready prompt sound, and controls the display 13 to display a ready indication.

[0043] The display 13 is a touch screen located on the top surface of the control unit 1. It displays information such as compression time, pressure value, and working status, and can integrate touch buttons for user input of operation commands. The sound-emitting device 14 is a buzzer or miniature speaker located on the housing of the control unit 1. It emits an alarm sound when the compression time reaches a preset value. The processor controls the display 13 to display relevant information and controls the sound-emitting device 14 to emit an alarm according to a preset program.

[0044] As an alternative embodiment, those skilled in the art can also set independent physical buttons on the control unit to replace some of the functions of the touch screen, or use indicator lights to replace the display to achieve a simplified design.

[0045] In the above technical solution, the display and sound-emitting device enable users to understand the working status of the device in real time and receive timely sound and light prompts when it is necessary to release the tension, further improving the safety and convenience of use.

[0046] The following describes the overall working principle of the intravenous infusion auxiliary device provided in the embodiments of this utility model.

[0047] In use, first insert the first plug 21 of the tightening band 2 into the connecting slot 11 of the connecting part 3 to fix one end of the tightening band 2. Then, wrap the tightening band 2 around the limb to be punctured. The pressure of the device causes the distal vein of the limb to fill, so that intravenous infusion, blood collection, or drug injection can be performed using an infusion set or syringe. Push the horizontal section of the second plug 23 along the limiting groove 12 on the upper surface of the control member 1 towards the connecting part 3. When the horizontal section slides to the position where the movable boss 122 is aligned with the locking groove 232, the movable boss 122 springs upward into the locking groove 232 under the elastic force of the pre-compression elastic member 125, locking the second plug 23 in the limiting groove 12. At this time, the connecting post 231 at the bottom end of the extension of the second plug 23 is close to the connecting part 3, and the bottom surface of the connecting post 231 is coplanar with the bottom surface of the connecting part 3. Subsequently, the user pulls the free end of the tightening band 2 that passes through the locking ring 22, causing the tightening band 2 to tighten at the locking ring 22, thus securing the limb. Upon receiving the tightening start signal, the processor starts timing. When the preset venous filling time is reached, the locking mechanism 121 is released, and the sound device 14 emits a venipuncture ready tone, allowing the operator to proceed with subsequent infusion or injection. After puncture is completed and the needle of the infusion set or syringe is inserted into the blood vessel, the processor, according to preset timing conditions or the user's manual command, controls the induction coil 124 to be energized. The iron core 123 generates electromagnetic force, causing the movable boss 122 to be attracted downwards and disengaged from the locking groove 232. Under the rebound force of the tightening band 2, the second plug 23 slides outwards along the slide rail 126 until the stop boss 234 is embedded in the stop groove 127, releasing the tightening band 2 from its tightened state. In case of electromagnetic release failure or other emergency, the user can manually push the movable boss 122 out of the slot 232 by pressing the second button 233, which can also release the device.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An intravenous infusion assist device, comprising a control component (1) and a tightening band (2), wherein the control component (1) is provided with a processor and a locking mechanism (121) communicatively connected to the processor, characterized in that: The upper surface of the control component (1) is provided with a limiting groove (12) extending along its length direction. The bottom of the control component (1) near the end of the limiting groove (12) is provided with a connecting part (3). The connecting part (3) includes a first connecting part (31) and a second connecting part (32). The first connecting part (31) is fixedly disposed at the bottom of the control component (1). The second connecting part (32) is detachably plugged into the first connecting part (31). The side of the second connecting part (32) is provided with a connecting slot (11). One end of the tightening band (2) is fixedly provided with a first plug (21) that can be detachably inserted into the connecting slot (11), and the other end of the tightening band (2) is fixedly provided with a second plug (23). The second plug (23) has an L-shaped structure and includes a horizontal section and an extension section connected to each other. The horizontal section is slidably disposed in the limiting groove (12) and configured to be locked or released by the locking mechanism (121). The extension section extends from one end of the horizontal section around the side of the control member (1) and downward to the bottom of the control member (1). The bottom end of the extension section is bent away from the control member (1) to form a connecting post (231). The end of the tightening band (2) connected to the second plug (23) is fixedly connected to the connecting post (231). When the locking mechanism (121) locks the second plug (23), the bottom end of the extension is close to the connecting part (3), and the bottom surface of the extension is at the same height plane as the bottom surface of the connecting part (3).

2. The intravenous infusion auxiliary device according to claim 1, characterized in that: The first connecting part (31) has a T-shaped block structure, and the second connecting part (32) has a T-shaped groove adapted to the T-shaped block structure.

3. The intravenous infusion auxiliary device according to claim 2, characterized in that: The bottom surface of the second connecting part (32) is configured as an inwardly concave arc surface.

4. The intravenous infusion auxiliary device according to claim 1, characterized in that: The bottom surface of the horizontal section of the second plug (23) is provided with a snap-fit ​​groove (232). The locking mechanism (121) includes a movable boss (122), an iron core (123), an induction coil (124), and a pre-compression elastic component (125). The induction coil (124) is connected to the processor and spirally surrounds the iron core (123). The movable boss (122) is slidably sleeved on the upper end of the iron core (123). One end of the pre-compression elastic component (125) abuts against the movable boss (122). The other end is fixed inside the control component (1); when the locking mechanism (121) locks the second plug (23), the movable boss (122) is embedded in the snap-fit ​​groove (232) under the elastic drive of the pre-pressure elastic component (125); when the induction coil (124) is energized, the movable boss (122) can overcome the elastic force of the pre-pressure elastic component (125) under the magnetic adsorption of the iron core (123) to move away from the snap-fit ​​groove (232).

5. The intravenous infusion auxiliary device according to claim 4, characterized in that: The snap-fit ​​groove (232) is provided with a second button (233). The second button (233) is slidably arranged along the axial direction of the snap-fit ​​groove (232). When the second button (233) is pressed, it pushes the movable boss (122) to disengage from the snap-fit ​​groove (232).

6. The intravenous infusion auxiliary device according to claim 1, characterized in that: The limiting slide groove (12) has slide rails (126) on both longitudinal sides, and the second plug (23) has stop bosses (234) on both longitudinal sides of the horizontal section. The stop bosses (234) have slide grooves (235) that cooperate with the slide rails (126). The limiting slide groove (12) has a stop groove (127) at its lateral outer end. When the locking mechanism (121) releases the second plug (23), the horizontal section of the second plug (23) can slide along the slide rails (126) and the stop bosses (234) can be embedded in the stop grooves (127).

7. The intravenous infusion auxiliary device according to claim 1, characterized in that: The tightening band (2) is also provided with a locking ring (22), which is located between the first plug (21) and the second plug (23). The tightening band (2) passes through the locking ring (22) and folds around the locking ring (22).

8. The intravenous infusion auxiliary device according to claim 1, characterized in that: The top of the control unit (1) is provided with a display (13), and the control unit (1) is provided with a sound-emitting device (14). The display (13) and the sound-emitting device (14) are respectively connected to the processor.

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