Rapid infusion device

Abstract

The application relates to a rapid infusion device, which comprises a first cover plate and a second cover plate, one end of the first cover plate is hinged to one end of the second cover plate, and the first cover plate is clamped to the second cover plate through an adjustable buckle assembly; an infusion bag placing groove is arranged on the first cover plate; a pressing plate is arranged between the second cover plate and the infusion bag placing groove; the pressing plate is connected with the second cover plate through an elastic assembly; and the elastic assembly is used for pushing the pressing plate to move to the infusion bag placing groove. In the application, the pressing plate can continuously form extrusion force on the infusion bag under the elastic force of the elastic assembly through the arrangement of the pressing plate and the elastic assembly; the first cover plate is clamped to the second cover plate through the adjustable buckle assembly; the included angle of the first cover plate and the second cover plate during clamping and fixing can be adjusted through the adjustable buckle assembly; and when the liquid in the infusion bag flows out excessively, the pressing plate can continuously form larger extrusion force on the infusion bag through the adjustable buckle assembly.

Description

Technical Field

[0001] This invention belongs to the field of medical emergency technology and relates to a rapid infusion device. Background Technology

[0002] For patients experiencing severe blood loss, rapid fluid replacement is crucial during resuscitation. Currently, this is typically achieved by medical staff squeezing the IV bag with both hands to expedite fluid drainage. However, this requires a medical staff member to squeeze the IV bag for an extended period, consuming their time and hindering rapid response during resuscitation. Therefore, it is necessary to propose a simple-to-operate device that can automatically squeeze the IV bag for rapid fluid replacement. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a fast infusion device that is simple to operate.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A rapid infusion device includes a first cover plate and a second cover plate. One end of the first cover plate is hinged to one end of the second cover plate. The first cover plate is also engaged with the second cover plate via an adjustable snap-fit ​​assembly, which is used to adjust the included angle when the first and second cover plates are engaged and fixed. An infusion bag placement slot is provided on the first cover plate, and a first notch is provided on one side of the infusion bag placement slot. A pressure plate is provided between the second cover plate and the infusion bag placement slot. The pressure plate is connected to the second cover plate via an elastic component, which is used to push the pressure plate towards the infusion bag placement slot.

[0006] Furthermore, the second cover plate is provided with a pressure plate receiving groove at the position corresponding to the pressure plate, and a second notch is provided on one side of the pressure plate receiving groove; the elastic component includes a plurality of screws fixedly disposed on the pressure plate, one end of the screws passing through the bottom of the second pressure plate receiving groove and screwed with a nut; a first spring is respectively sleeved on each screw, one end of the first spring abutting against the pressure plate, and the other end abutting against the bottom of the second pressure plate receiving groove.

[0007] Furthermore, a pressure sensor is provided on the pressure plate, which is used to measure the pressure between the pressure plate and the infusion bag. The pressure sensor is electrically connected to a controller, and the controller is electrically connected to an alert unit. The controller is used to trigger the alert unit to issue an alert when the pressure detected by the pressure sensor is less than a preset pressure threshold.

[0008] Furthermore, the adjustable buckle assembly includes a fixed buckle and a latch assembly for engaging with the fixed buckle. The fixed buckle is provided with an arc-shaped engaging portion, one end of which is also arc-shaped. The engaging portion has at least two levels of latches on one side of the latch assembly. The latch assembly includes a latch seat and a latch that is slidably disposed in the latch seat. The latch is elastically connected to the latch seat. One end of the latch protrudes from one side of the latch assembly mounting groove under the action of elastic force and extends into the fixed buckle receiving groove.

[0009] Furthermore, the latch seat is provided with a "U"-shaped groove, and a baffle is provided at the opening of the "U"-shaped groove; the latch includes a guide portion disposed in the "U"-shaped groove, one end of the guide portion passing through the bottom of the "U"-shaped groove and connected to an unlocking piece, the other end of the guide portion being connected to a tongue body, the tongue body passing through the baffle; a second spring is sleeved on the guide portion, one end of the second spring abutting against the tongue body, and the other end abutting against the bottom of the "U"-shaped groove.

[0010] Furthermore, the latch is serrated, including a first plane and a first inclined surface extending obliquely from one end of the first plane; the upper end of the tongue is provided with a second plane, and the tongue is also provided with a second inclined surface opposite to the first inclined surface; when the tongue is inserted into the latch, the second plane abuts against the first plane to limit the movement and prevent the tongue from coming out of the latch; when the second cover plate and the first cover plate rotate relative to each other, making the included angle between the second cover plate and the first cover plate smaller, the second inclined surface abuts against the first inclined surface and pushes the tongue to slide out of the latch; when the tongue moves out of the current latch and aligns with the next latch, the second spring pushes the tongue into the latch to complete the engagement, thereby making the second cover plate and the first cover plate engage and position at a smaller included angle.

[0011] Furthermore, the fixing buckle is disposed on the second cover plate, and the locking tongue seat is disposed on the first cover plate; or

[0012] The fixing buckle is disposed on the first cover plate, and the locking tongue seat is disposed on the second cover plate.

[0013] Furthermore, a fixing buckle is provided on each side of the second cover plate, and a locking tongue assembly is provided on each side of the first cover plate corresponding to each fixing buckle.

[0014] Furthermore, a retaining groove is provided at the position of the first cover plate corresponding to the snap-fit ​​part, and the retaining groove is a through groove; a latch assembly mounting groove is provided on one side of the retaining groove, and the latch seat is embedded in the latch assembly mounting groove; a limiting groove is also provided on one side of the latch assembly mounting groove, and the limiting groove is used to limit the distance of elastic movement of the latch away from the snap-fit ​​part; one end of the latch protrudes from one side of the latch assembly mounting groove under the action of elastic force and extends into the retaining groove to snap with the snap-fit ​​part.

[0015] Furthermore, a fixing component is provided at the position near the hinge of the first or second cover plate; a hook is provided at the hanging hole of the infusion bag in the infusion bag placement slot, and clearance holes are provided at the positions of the pressure plate and the second cover plate corresponding to the hooks.

[0016] In this invention, by setting a pressure plate and an elastic component, the pressure plate can continuously exert a squeezing force on the infusion bag under the elastic force of the elastic component; the first cover plate is engaged with the second cover plate by an adjustable buckle assembly, and the angle between the first cover plate and the second cover plate when they are engaged and fixed can be adjusted by the adjustable buckle assembly, so that when too much liquid flows out of the infusion bag, the pressure plate can continuously exert a large squeezing force on the infusion bag by the adjustable buckle assembly. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 , Figure 2 This is a schematic diagram of the rapid infusion device of the present invention in the open state.

[0019] Figure 3 This is a schematic diagram of the structure of the first cover plate.

[0020] Figure 4 This is a structural diagram of the fastener and latch assembly.

[0021] Figure 5 This is a schematic diagram showing the locking tongue and the second-level locking mechanism engaging.

[0022] Figure 6 This is a schematic diagram showing the locking tongue and the third-level locking mechanism engaging.

[0023] The meanings of the labels in the attached diagram are as follows:

[0024] First cover plate 100-100; fixing component 110-110; infusion bag placement slot 120-120; first notch 121-121; hook 122-122; fixing buckle receiving slot 130-133; locking tongue assembly mounting slot 140-144; limiting slot 141-141;

[0025] Second cover plate 200-200; pressure plate 210-210; screw 211-211; nut 212-212; first spring 213-213; pressure plate receiving groove 220-220; second notch 221-221; clearance hole 230-230;

[0026] Fixed buckle 300-300; snap-fit ​​part 310-310; bayonet openings 311, 312, 313; arc-shaped part 320-320; first plane 321-321; first inclined surface 322-322;

[0027] Locking tongue assembly 400-400; Locking tongue seat 410-410; "U" shaped groove 411-411; Baffle 420-420; Guide part 430-430; Tongue body 431-431; Second plane 432-432; Second inclined surface 433-433; Second spring 440-440; Unlocking plate 450-450;

[0028] Infusion bag 500-500; infusion head 501-501; hanging hole 502-502. Detailed Implementation

[0029] The following specific examples illustrate the implementation of the present invention. The illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please see Figure 1 and Figure 2 One embodiment of the rapid infusion device of the present invention includes a first cover plate 100 and a second cover plate 200. The first cover plate 100 and the second cover plate 200 are hinged (movably connected). Two fixing components 110 are provided on the first cover plate 100 near the hinge position; of course, the fixing components 110 can also be provided on the second cover plate 200. The fixing components 110 can be annular to facilitate fixing the rapid infusion device to an infusion stand (not shown in the figure).

[0031] An infusion bag placement slot 120 is provided on the first cover plate 100. A first notch 121 is provided on one side of the infusion bag placement slot 120, through which the infusion head 501 of the infusion bag 500 can extend from the rapid infusion device for easy connection to the infusion set (not shown in the figure). A pressure plate 210 is provided between the second cover plate 200 and the infusion bag placement slot 120. A pressure plate receiving slot 220 can be provided on the second cover plate 200 at the position corresponding to the pressure plate 210. A second notch 221 is provided on one side of the pressure plate receiving slot 220. The pressure plate receiving slot 220 is used to increase the travel of the pressure plate 210. The second notch 221 is used to quickly expel air from the pressure plate receiving slot 220 when the pressure plate 210 moves toward the pressure plate receiving slot 220, so as to avoid obstructing the movement of the pressure plate 210. In addition, the second notch 221 can also be used to observe the current position of the pressure plate 210.

[0032] To prevent the pressure plate 210 from squeezing the infusion bag 500, causing it to shift and fall out of the infusion bag placement slot 120, a hook 122 can be provided at the hanging hole 502 of the infusion bag placement slot 120 corresponding to the infusion bag 500. A clearance hole 230 is provided at the corresponding positions of the hook 122 on the pressure plate 210 and the second cover plate 200. The hanging hole 502 of the infusion bag 500 can be fitted onto the hook 122 to prevent the infusion bag 500 from falling out of the infusion bag placement slot 120. The clearance hole 230 allows for clearance when the first cover plate 100 rotates, preventing the hook 122 from interfering with the second cover plate 200 and the pressure plate 210 during rotation.

[0033] The pressure plate 210 and the second cover plate 200 are connected by an elastic component, which is used to push the pressure plate 210 to move into the infusion bag placement slot 120. The elastic component may include a plurality of screws 211 fixedly disposed on the pressure plate 210. One end of the screw 211 passes through the bottom of the pressure plate receiving slot 220 and is screwed with a nut 212. Each screw 211 is respectively fitted with a first spring 213. One end of the first spring 213 abuts against the pressure plate 210 and the other end abuts against the bottom of the pressure plate receiving slot 220.

[0034] The first cover plate 100 is also engaged with the second cover plate 200 via an adjustable snap-fit ​​assembly. The adjustable snap-fit ​​assembly is used to adjust the angle between the first cover plate 100 and the second cover plate 200 when they are engaged, so that when the liquid in the infusion bag 500 decreases, the pressure of the pressure plate 210 on the infusion bag 500 can be maintained by adjusting and reducing the angle between the first cover plate 100 and the second cover plate 200. The adjustable snap-fit ​​assembly may include a fixing buckle 300 and a locking tongue assembly 400 for engaging with the fixing buckle 300. In this embodiment, fixing buckles 300 are symmetrically arranged on both sides of the second cover plate 200, and a locking tongue assembly 400 is respectively provided on both sides of the first cover plate 100 corresponding to each fixing buckle 300. Of course, the fixing buckle 300 can be set on the first cover plate 100, and the locking tongue assembly 400 can be set on the second cover plate 200. The fixing buckle 300 and the locking tongue assembly 400 can also be not set on both sides, as long as the non-hinged ends of the first cover plate 100 and the second cover plate 200 can be fixed by snap-fit.

[0035] To facilitate timely alerting of medical personnel when the pressure between the pressure plate 210 and the infusion bag 500 is low, a pressure sensor (not shown in the figure) is installed on the pressure plate 210. The pressure sensor measures the pressure between the pressure plate 210 and the infusion bag 500. The pressure sensor is electrically connected to a controller (not shown in the figure), and the controller is electrically connected to an alerting unit (not shown in the figure). The alerting unit can be a speaker or other sound-emitting device. When the pressure detected by the pressure sensor is lower than a preset pressure threshold, the controller causes the alerting unit to emit an audible alert to remind medical personnel to increase the pressure between the pressure plate 210 and the infusion bag 500 by adjusting the adjustable latch assembly.

[0036] The fixing buckle 300 is provided with a snap-fit ​​portion 310, one end of which is provided with an arc-shaped portion 320. The snap-fit ​​portion 310 has at least two levels of latches on one side corresponding to the latch assembly 400. The snap-fit ​​portion 310 is arc-shaped so that when each latch is rotated to engage with the latch assembly 400, the position of the latches is basically consistent. In this embodiment, the snap-fit ​​portion 310 is provided with a first-level latch 311, a second-level latch 312, and a third-level latch 313. The first cover plate 100 is provided with a fixing buckle receiving groove 130 at the position corresponding to the snap-fit ​​portion 310. A latch assembly mounting groove 140 is provided on one side of the fixing buckle receiving groove 130, and the latch seat 410 is embedded in the latch assembly mounting groove 140. A limiting groove 141 is also provided on one side of the latch assembly mounting groove 140, which is used to limit the distance that the latch can elastically move away from the snap-fit ​​portion 310. The latch assembly 400 includes a latch seat 410 and a latch slidably disposed in the latch seat 410. The latch is elastically connected to the latch seat 410. One end of the latch protrudes from one side of the latch assembly mounting groove 140 under the action of elastic force and extends into the fixing buckle receiving groove 130 so that the latch can be engaged and fixed with the latches (311, 312, 313).

[0037] Specifically, the latch seat 410 is provided with a U-shaped groove 411, and a baffle 420 is provided at the opening of the U-shaped groove 411. The latch includes a guide portion 430 disposed in the U-shaped groove 411. One end of the guide portion 430 extends through the bottom of the U-shaped groove 411 and is connected to an unlocking piece 450. The other end of the guide portion 430 is connected to a tongue body 431, which passes through the baffle 420. A second spring 440 is sleeved on the guide portion 430. One end of the second spring 440 abuts against the tongue body 431, and the other end abuts against the bottom of the U-shaped groove 411. Thus, under the elastic force of the second spring 440, the tongue body 431 is pushed out of the baffle 420 and into the latching slots (311, 312, 313) of the latching portion 310, while the unlocking piece 450 abuts against and is limited by the latch seat 410.

[0038] The latches (311, 312, 313) may be serrated, including a first plane 321 at the lower end and a first inclined surface 322 extending obliquely upward from one end of the first plane 321; the upper end of the tongue 431 is provided with a second plane 432, and the tongue 431 is also provided with a second inclined surface 433 opposite to the first inclined surface 322. When the tongue 431 is inserted into the latch, the second plane 432 abuts against the first plane 321 of the latch to limit its movement, preventing the tongue 431 from coming out of the latch. When the second cover plate 200 and the first cover plate 100 rotate relative to each other, causing the included angle between the second cover plate 200 and the first cover plate 100 to decrease, the second inclined surface 433 abuts against the first inclined surface 322 of the latch and pushes the tongue 431 to slide out of the latch. When the tongue 431 moves out of the current latch and aligns with the next latch, the second spring 440 pushes the tongue 431 into the next latch, so that the second plane 432 abuts against the first plane 321 of the next latch and is limited, thus completing the latching, thereby locking the second cover plate 200 and the first cover plate 100 at a smaller angle.

[0039] The working principle of this embodiment is as follows:

[0040] like Figures 1 to 6 As shown, in use, first rotate the first cover plate 100 and the second cover plate 200 in opposite directions to form a large angle between the first cover plate 100 and the second cover plate 200 to facilitate the insertion of the infusion bag 500; for example, it can be done as follows: Figure 1 and Figure 2 As shown, the first cover plate 100 and the second cover plate 200 are fully opened to form a 180° angle. Then, the infusion bag 500 is placed in the infusion bag placement slot 120 and hung on the hook 122 through the hanging hole 502, allowing the infusion head 501 of the infusion bag 500 to protrude through the first notch 121. Subsequently, by squeezing the first cover plate 100 and the second cover plate 200, the first cover plate 100 and the second cover plate 200 are rotated relative to each other, and the angle between the first cover plate 100 and the second cover plate 200 gradually decreases. During this process, the pressure plate 210 abuts against the infusion bag 500 and compresses the six first springs 213, increasing the elastic force of the first springs 213, thereby increasing the pressure of the pressure plate 210 on the infusion bag 500, forming a squeeze on the infusion bag 500 to facilitate rapid drainage of the infusion bag 500 and accelerate the infusion rate.

[0041] When the arc-shaped portion 320 of the latching part 310 abuts against the second inclined surface 433 of the tongue 431, the arc surface of the arc-shaped portion 320 pushes the locking tongue into the limiting groove 141 and compresses the second spring 440. When the included angle between the first cover plate 100 and the second cover plate 200 continues to decrease, aligning the tongue 431 with the latch 311, the locking tongue extends into the fixing buckle receiving groove 130 under the elastic force of the second spring 440, and the tongue 431 extends into the latch 311. At this time, the second plane 432 of the tongue 431 abuts against the first plane 321 of the latch 311, limiting and locking the first cover plate 100 and the second cover plate 200, so that the pressure plate 210 can continuously squeeze the infusion bag 500 under the elastic force of the six first springs 213 without manual operation.

[0042] As the liquid flows out of the infusion bag 500, the pressure exerted by the pressure plate 210 on the infusion bag 500 gradually decreases. To maintain a consistently high pressure exerted by the pressure plate 210 on the infusion bag 500, when excessive liquid flows out and the pressure between the pressure plate 210 and the infusion bag 500 falls below a preset pressure threshold, the controller triggers an alarm sound from the alert unit, reminding medical staff to increase the pressure between the pressure plate 210 and the infusion bag 500. At this point, medical staff can continue to squeeze the first cover plate 100 and the second cover plate 200, further reducing the angle between them to increase the pressure exerted by the pressure plate 210 on the infusion bag 500 and compensate for the reduced pressure caused by the decreasing amount of liquid in the infusion bag 500.

[0043] During this process, the first inclined surface 322 of the latch 311 abuts against the second inclined surface 433 of the tongue 431, pushing the tongue 431 to slide outward from the latch 311. After the tongue 431 moves out of the latch 311, it continues to press against the first cover plate 100 and the second cover plate 200; as... Figure 5 As shown, when the latch 312 of the latching part 310 moves to align with the tongue 431, the second spring 440 pushes the tongue 431 into the latch 312, and the second plane 432 abuts against the first plane 321 of the latch 312 to limit the movement, so that the tongue 431 is latched with the latch 312, thereby locking the second cover plate 200 and the first cover plate 100 at a smaller angle.

[0044] When the infusion bag 500 continues to discharge a significant amount of fluid, causing the pressure between the pressure plate 210 and the infusion bag 500 to fall below the preset pressure threshold again, the controller triggers an alarm sound from the reminder unit, prompting medical staff to continue squeezing the first cover 100 and the second cover 200 to engage the tongue 431 with the latch 313. This allows for three-position adjustment of the engagement position, maintaining the pressure of the pressure plate 210 on the infusion bag 500. Figure 6As shown, at this time, the pressure plate 210 is completely located in the pressure plate receiving groove 220, so that the included angle between the first cover plate 100 and the second cover plate 200 is almost 0°.

[0045] If the liquid level in the infusion bag 500 continues to decrease after the tongue 431 engages with the latch 313, causing the alarm unit to continue sounding, it indicates that the liquid level in the infusion bag 500 is too low and it needs to be replaced. At this point, move the two unlocking pieces 450 outwards, causing the two locking tongues to move into the limiting grooves 141 respectively, and move the tongue 431 out of the latch 313, thereby disengaging the fixing buckle 300 and the locking tongue assembly 400 to release the engagement. Then, rotate the first cover plate 100 and the second cover plate 200 in opposite directions, forming a large angle between them, allowing the infusion bag 500 to be replaced.

[0046] In this embodiment, by setting a pressure plate 210 and six first springs 213, the pressure plate 210 can continuously exert pressure on the infusion bag 500 under the elastic force of the six first springs 213. By setting a pressure sensor and an alert unit, the first cover plate 100 is engaged with the second cover plate 200 through an adjustable latch assembly consisting of a fixing buckle 300 and a locking tongue assembly 400. The latching part 310 of the fixing buckle 300 is provided with three-level latches, which can be engaged with the locking tongue at the three levels respectively, so that the first cover plate 100 and the second cover plate 200 can be engaged and fixed at three angles respectively. Thus, when too much liquid flows out of the infusion bag 500, the adjustable latch assembly maintains a large pressure exerted by the pressure plate 210 on the infusion bag 500. During this process, medical staff only need to squeeze the cover once after hearing the alert sound, which is convenient to operate and has good results.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rapid infusion device, characterized in that: The device includes a first cover plate and a second cover plate. One end of the first cover plate is hinged to one end of the second cover plate. The first cover plate is also latched to the second cover plate by an adjustable latching assembly, which is used to adjust the included angle when the first cover plate and the second cover plate are latched and fixed. An infusion bag placement groove is provided on the first cover plate, and a first notch is provided on one side of the infusion bag placement groove. A pressure plate is provided between the second cover plate and the infusion bag placement groove. The pressure plate is connected to the second cover plate by an elastic component, which is used to push the pressure plate to move towards the infusion bag placement groove. The adjustable buckle assembly includes a fixed buckle and a latch assembly for engaging with the fixed buckle. The fixed buckle has an arc-shaped engaging portion, one end of which has an arc shape. The engaging portion has at least two levels of latches on one side of the latch assembly. The latch assembly includes a latch seat and a latch that is slidably disposed in the latch seat. The latch is elastically connected to the latch seat. One end of the latch protrudes from one side of the latch assembly mounting groove under the action of elastic force and extends into the fixed buckle receiving groove. The latch seat is provided with a "U" shaped groove, and a baffle is provided at the opening of the "U" shaped groove; the latch includes a guide part provided in the "U" shaped groove, one end of the guide part passes through the bottom of the "U" shaped groove and is connected to an unlocking piece, and the other end of the guide part is connected to a tongue body, which passes through the baffle; a second spring is sleeved on the guide part, one end of the second spring abuts against the tongue body, and the other end abuts against the bottom of the "U" shaped groove; The latch is serrated, including a first plane and a first inclined surface extending obliquely from one end of the first plane; the upper end of the tongue is provided with a second plane, and the tongue is also provided with a second inclined surface opposite to the first inclined surface; when the tongue is inserted into the latch, the second plane abuts against the first plane to limit the movement and prevent the tongue from coming out of the latch; when the second cover plate and the first cover plate rotate relative to each other, making the included angle between the second cover plate and the first cover plate smaller, the second inclined surface abuts against the first inclined surface and pushes the tongue to slide out of the latch; when the tongue moves out of the current latch and aligns with the next latch, the second spring pushes the tongue into the next latch to complete the latching, thereby making the second cover plate and the first cover plate latch and position themselves at a smaller included angle.

2. The rapid infusion device according to claim 1, characterized in that: The second cover plate is provided with a pressure plate receiving groove at the position corresponding to the pressure plate, and a second notch is provided on one side of the pressure plate receiving groove; the elastic component includes a plurality of screws fixedly disposed on the pressure plate, one end of the screws passing through the bottom of the second pressure plate receiving groove and screwed with a nut; a first spring is respectively sleeved on each screw, one end of the first spring abutting against the pressure plate, and the other end abutting against the bottom of the second pressure plate receiving groove.

3. The rapid infusion device according to claim 1, characterized in that: A pressure sensor is installed on the pressure plate to measure the pressure between the pressure plate and the infusion bag. The pressure sensor is electrically connected to a controller, and the controller is electrically connected to an alert unit. The controller is used to trigger the alert unit to issue an alert when the pressure detected by the pressure sensor is less than a preset pressure threshold.

4. The rapid infusion device according to claim 1 or 3, characterized in that: The fixing buckle is disposed on the second cover plate, and the locking tongue seat is disposed on the first cover plate; or The fixing buckle is disposed on the first cover plate, and the locking tongue seat is disposed on the second cover plate.

5. The rapid infusion device according to claim 1 or 3, characterized in that: A fixing buckle is provided on each side of the second cover plate, and a locking tongue assembly is provided on each side of the first cover plate corresponding to each fixing buckle.

6. The rapid infusion device according to claim 5, characterized in that: The first cover plate has a retaining groove at the position corresponding to the snap-fit ​​part, and the retaining groove is a through groove; a latch assembly mounting groove is provided on one side of the retaining groove, and the latch seat is embedded in the latch assembly mounting groove; a limiting groove is also provided on one side of the latch assembly mounting groove, and the limiting groove is used to limit the distance of elastic movement of the latch away from the snap-fit ​​part; one end of the latch protrudes from one side of the latch assembly mounting groove under the action of elastic force and extends into the retaining groove to snap with the snap-fit ​​part.

7. The rapid infusion device according to claim 1, characterized in that: A fixing component is provided at the position near the hinge of the first or second cover plate; a hook is provided at the hanging hole of the infusion bag placement slot corresponding to the infusion bag, and clearance holes are provided at the positions of the pressure plate and the second cover plate corresponding to the hooks.

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