Multifunctional infusion device for emergency rescue

Abstract

The application discloses a multifunctional infusion device for first-aid rescue, and belongs to the technical field of medical devices. The multifunctional infusion device comprises a multifunctional end head, a liquid storage bottle and an infusion tube. The multifunctional end head comprises a first piston cylinder, the inside of the first piston cylinder is provided with a first piston, a first spring is arranged between the first piston and the upper end of the first piston cylinder, the two ends of the first spring are fixedly connected to the inner side surfaces of the end portions of the first piston and the first piston cylinder respectively, the middle part of the surface of the first piston, on which the first spring is arranged, is provided with a first piston rod, one end of the first piston rod is rotatably connected to the first piston, the other end of the first piston rod passes through a through hole arranged at the end portion of the first piston cylinder, recesses are symmetrically arranged on the first piston rod, and a protrusion corresponding to the positions of the recesses is arranged in the through hole arranged at the end portion of the first piston cylinder. The technical scheme is used to solve the problem that the infusion device in the prior art has a single function and is difficult to meet the use requirements in field rescue.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a multifunctional infusion device for first aid rescue. BACKGROUND

[0002] Under field conditions, timely hemostasis and rapid transfusion are important means of trauma first aid. Rapid input of drugs (balanced liquid) and blood is the most effective method to correct hemorrhagic shock, which can significantly improve the success rate of trauma treatment. Therefore, large, rapid pressurized blood transfusion is particularly important.

[0003] And the infusion device in the prior art: when infusing, the drug is usually slowly delivered into the patient's body through the pressure in the infusion bottle and the operation of hanging the infusion bottle, and such an infusion device is difficult to meet the use requirements of rapid infusion in field rescue, and the use function of the infusion device in the prior art is single, and only infusion operation can be performed, which is inconvenient to use in actual rescue. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a multifunctional infusion device for first aid rescue to solve the problem of single function of the infusion device in the prior art and difficulty in meeting the use requirements in field rescue.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] The multifunctional infusion device for first aid rescue comprises a multifunctional tip, a liquid storage bottle and an infusion tube connected in sequence, the multifunctional tip comprises a first piston cylinder, the inside of the first piston cylinder is provided with a first piston, a first spring is arranged between the first piston and the upper end inner wall of the first piston cylinder, the two ends of the first spring are fixedly connected to the inner side surfaces of the end portions of the first piston and the first piston cylinder respectively, the middle part of the surface of the first piston provided with a first piston rod, one end of the first piston rod is rotatably connected to the first piston, the other end of the first piston rod passes out from the through hole provided at the end portion of the first piston cylinder, the first piston rod is symmetrically provided with a groove, the through hole provided at the end portion of the first piston cylinder is provided with a protrusion corresponding to the position of the groove, the protrusion is slidably connected in the groove, the part of the first piston rod located in the first piston cylinder is provided with a lower limit groove, the part of the first piston rod located outside the first piston cylinder is provided with an upper limit groove, the middle part of the lower end surface of the first piston cylinder is provided with a plug-in pipe, one end of the plug-in pipe is fixedly connected to the end portion of the first piston cylinder and communicates with the inside of the first piston cylinder, the other end of the plug-in pipe is plugged into the inside of one end of the liquid storage bottle, and one end of the infusion tube is plugged into the inside of the other end of the liquid storage bottle.

[0007] Furthermore, a gas channel is provided through the middle part of the first piston and the middle part of the first piston rod, a pull rod is provided in the gas channel, the diameter of the pull rod is smaller than the diameter of the gas channel, and a sealing ball is provided at one end of the pull rod below the first piston, the diameter of the sealing ball is larger than the diameter of the gas channel, one end of the sealing ball is fixed on the pull rod, and the other end of the pull rod extends to the outside of the end of the first piston rod, and a second spring is provided on the outside of the end of the first piston rod, and the two ends of the second spring are respectively fixed to the ends of the first piston rod and the pull rod.

[0008] The cam is secured to a position 56° to the left of the second piston rod and secured to the second piston rod by a spring. The cam is secured to a position 56° to the left of the second piston rod and secured to the second piston rod by a spring.

[0009] Furthermore, the liquid storage bottle includes a bottle body, both ends of the bottle body are provided with bottle mouths, the inside of the bottle mouths are provided with sealing plugs, the ends of the insertion tube and the end of the infusion tube are respectively inserted into the two sealing plugs to communicate with the interior of the liquid storage bottle.

[0010] Furthermore, a limiting assembly for limiting the position of the liquid storage bottle is provided on the outer side surface of the lower end of the first piston cylinder, and the limiting assembly includes a symmetrically arranged screw, one end of the screw is fixed on the first piston cylinder, and the other end of the screw is provided with an adjusting nut, a mounting ring is slidably sleeved on the screw, a connecting rod is provided on the mounting ring, one end of the connecting rod is fixed on the mounting ring, and a support plate is provided on the other ends of the two connecting rods, both ends of the support plate are fixed on the connecting rod, and a limiting hole is provided in the middle of the support plate, and the diameter of the limiting hole is larger than the bottle mouth diameter of the liquid storage bottle and smaller than the bottle body diameter of the liquid storage bottle.

[0011] Furthermore, a third spring is provided between the mounting ring and the adjusting nut. The third spring is sleeved on the screw rod, and one end of the third spring is fixed on the mounting ring, and the other end of the third spring is rotatably connected to the adjusting nut.

[0012] Furthermore, a sponge cushion layer is provided on the contact surface between the support plate and the liquid storage bottle.

[0013] The beneficial effects of the present invention are:

[0014] The leaf device in the present technical solution can increase the pressure in the liquid storage bottle during infusion through the multifunctional end, thereby achieving the purpose of rapid infusion. At the same time, rapid infusion is achieved by increasing the pressure, and there is no need to place the liquid storage bottle in a higher position. The infusion effect can also be guaranteed, so that when the present device is used as an infusion tool, it can be better used in special environments such as the wild. At the same time, the multifunctional end can also be used as a suction tool, which is convenient for medical staff to perform drainage and suction operations on patients during surgery in the wild, further improving the functionality and practicality of the present infusion device.

[0015] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0017] Figure 1 is a three-dimensional schematic diagram of the multifunctional infusion device of the present invention;

[0018] Figure 2 is a three-dimensional schematic diagram of a multifunctional terminal in the multifunctional infusion device of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of a multifunctional terminal in the multifunctional infusion device of the present invention;

[0020] Figure 4 This is a three-dimensional schematic diagram of an upper baffle and a lower baffle provided on the second piston of the multifunctional end head of the present invention;

[0021] Figure 5 It is a three-dimensional schematic diagram of the limiting component in the multifunctional infusion device of the present invention.

[0022] The following are marked in the accompanying drawings:

[0023] 1. First piston cylinder; 2. Insert tube; 3. Arc-shaped through hole; 4. First piston; 5. First spring; 6. First piston rod; 7. Groove; 8. Bump; 9. Lower limiting groove; 10. Upper limiting groove; 11. Pull rod; 12. Sealing ball; 13. Second spring; 14. Second piston cylinder; 15. Second piston rod; 16. End plate; 17. Locking nut; 18. Mounting plate; 19. Threaded area; 20. Second piston; 21. Lower baffle; 22. Upper baffle; 23. Breathing hole; 24. Blocking hole; 25. Screw; 26. Adjusting nut; 27. Mounting ring; 28. Connecting rod; 29. ​​Third spring; 30. Support plate; 31. Liquid storage bottle; 32. Sealing plug; 33. Infusion tube. DETAILED DESCRIPTION

[0024] like Figures 1 to 5 As shown, the present invention is a multifunctional infusion device for first aid and rescue, comprising a multifunctional end head, a liquid storage bottle 31 and an infusion tube 33 connected in sequence, the multifunctional end head comprising a first piston cylinder 1, both ends of the first piston cylinder 1 are provided with end surfaces, a first piston 4 is provided inside the first piston cylinder 1, a first spring 5 is provided between the first piston 4 and the inner wall of the upper end of the first piston cylinder 1, the two ends of the first spring 5 are respectively fixedly connected to the first piston 4 and the inner side surface of the end of the first piston cylinder 1, a first piston rod 6 is provided in the middle of the surface of the first piston 4 where the first spring 5 is provided, one end of the first piston rod 6 is rotatably connected to the first piston 4, and the other end of the first piston rod 6 is provided from the end of the first piston cylinder 1. The through hole passes through, and the first piston rod 6 is symmetrically provided with grooves 7. The through hole set on the end of the first piston cylinder 1 is provided with a protrusion 8 corresponding to the position of the groove 7, and the protrusion 8 is slidably connected to the groove 7. The part of the first piston rod 6 located in the first piston cylinder 1 is provided with a lower limiting groove 9, and the part of the first piston rod 6 located outside the first piston cylinder 1 is provided with an upper limiting groove 10. A plug-in tube 2 is provided in the middle of the lower end surface of the first piston cylinder 1, one end of the plug-in tube 2 is fixedly connected to the end of the first piston cylinder 1, and is connected to the interior of the first piston cylinder 1, and the other end of the plug-in tube 2 is inserted into the interior of one end of the liquid storage bottle 31, and one end of the infusion tube 33 is inserted into the interior of the other end of the liquid storage bottle 31.

[0025] The working principle of the above technical solution is:

[0026] When used as an infusion tool, first lift the first piston rod 6 upward to compress the first spring 5. When the first spring 5 is compressed to the right, rotate the first piston rod 6 so that the protrusion 8 set on the end surface of the first piston cylinder 1 is engaged with the lower limiting groove 9 to limit the compression position of the first spring 5. Then the medical staff assembles the liquid storage bottle 31 and the infusion tube 33. After the assembly is completed, the medical staff injects the medicine into the liquid storage bottle 31 through a syringe. After the injection of the medicine bottle is completed, rotate the first piston rod 6 so that the protrusion 8 is located in the groove 7 set on the first piston rod 6. That is, at this time, the first spring 5 will inject air into the interior of the liquid storage bottle 31 through the first piston 4 during the process of recovering its deformation, thereby increasing the pressure in the liquid storage bottle 31, thereby quickly promoting the flow of medicine, and thereby increasing the infusion rate during rescue. It is not difficult to understand that the setting of the protrusion 8 and the lower limiting groove 9 can limit the position of the spring after deformation, thereby freeing the hands of the medical staff and facilitating the subsequent operations of the medical staff.

[0027] When used as a suction tool (such as required for blood suction or drainage operations during surgery), first press the first piston rod 6 downward to stretch the first spring 5. When the first spring 5 is stretched to the limit position, rotate the first piston rod 6 so that the protrusion 8 set on the end face of the first piston cylinder 1 is engaged with the upper limit groove 10, and then assemble the liquid storage bottle 31 and the infusion tube 33 and other components. After the assembly is completed, when a certain part of the patient needs to be suctioned, it is only necessary to place the other end of the infusion tube 33 in the designated position, and then rotate the first piston rod 6 so that the protrusion 8 is located in the groove 7. That is, the resetting of the first spring 5 will drive the first piston 4 to move upward, thereby forming a negative pressure in the liquid storage bottle 31, and then the liquid at the other end of the infusion tube 33 is sucked into the liquid storage bottle 31, thereby playing a role of drainage or suction.

[0028] This multifunctional end can increase the pressure in the liquid storage bottle 31 during infusion, thereby achieving the purpose of rapid infusion. At the same time, by increasing the pressure, there is no need to place the liquid storage bottle 31 at a higher position, and the infusion effect can be guaranteed, so that when this device is used as an infusion tool, it can be better used in special environments such as the field (the liquid storage bottle 31 is placed too high, and it can be used without changing its position, and a dedicated person can also raise its placement); at the same time, this multifunctional end can also be used as a suction tool, which is convenient for medical staff to perform drainage and suction operations on patients during field surgery.

[0029] In one feasible embodiment, a gas passage is provided running through the middle of the first piston 4 and the middle of the first piston rod 6, a pull rod 11 is provided in the gas passage, the diameter of the pull rod 11 is smaller than the diameter of the gas passage, a sealing ball 12 is provided at one end of the pull rod 11 below the first piston 4, the diameter of the sealing ball 12 is larger than the diameter of the gas passage, one end of the sealing ball 12 is fixed on the pull rod 11, and the other end of the pull rod 11 extends to the outside of the end of the first piston rod 6, a second spring 13 is provided on the outside of the end of the first piston rod 6, and the two ends of the second spring 13 are respectively fixed on the ends of the first piston rod 6 and the pull rod 11.

[0030] After the multifunctional end is connected to the liquid storage bottle 31, it is possible that the spring's single deformation reset process cannot fully transfer the liquid in the liquid storage bottle 31. Therefore, after the first spring 5 is reset, it is necessary to deform it again to provide positive pressure. Therefore, at this time, there is no need to remove the liquid storage bottle 31. It is only necessary to press the pull rod 11 downward to connect the interior of the first piston cylinder 1 with the outside. That is, at this time, when the first piston rod 6 is pulled upward, air can enter through the gas channel, that is, no negative pressure is generated, that is, no negative pressure is generated in the liquid storage bottle 31, that is, no impact on the infusion process. When the first spring 5 is compressed to the limit position, the pull rod 11 is released. Under the action of the second spring 13, the pull rod 11 is reset, and the sealing ball 12 at its end closes the gas channel. Then, when the first spring 5 is reset, air cannot escape from the gas channel, and then acts on the liquid storage bottle 31, continuing to apply positive pressure to the liquid storage bottle 31. Of course, when performing the suction operation, the method of applying negative pressure can be known from the above-mentioned operation method, and will not be described in detail here.

[0031] In one feasible manner, a mounting plate 18 is provided on one end of the first piston rod 6 connected to the second spring 13, and the middle part of the mounting plate 18 is sleeved and fixed on the outer side surface of the end of the first piston rod 6. Two groups of damping structures are symmetrically provided on the mounting plate 18, and the damping structure includes a second piston cylinder 14, a second piston 20 is provided inside the second piston cylinder 14, a second piston rod 15 is provided in the middle of the second piston 20, and the middle part of the second piston 20 is slidably connected to the second piston rod 15. The upper and lower ends of the second piston 20 are respectively provided with an upper baffle 22 and a lower baffle 21 sleeved and fixed on the second piston rod 15, and the upper baffle 22, the lower baffle 21 and the second piston 20 are arranged in contact with each other. Of course, the contact pressure cannot be too large, and it can play a certain role in contact surface sealing. When the second piston 20 is rotated, the second piston 20 cannot be allowed to rotate with the rotation of the upper baffle 22 and the lower baffle 21 (the second piston 20 and the inner wall of the second piston cylinder 14 have contact pressure, so it is relatively simple to achieve the above-mentioned contact method, and no further details will be given here). The second piston 20 is provided with a plurality of circumferentially evenly distributed air holes 23, and the upper baffle 22 and the lower baffle 21 are each provided with a plurality of blocking holes 24 that match the positions of the air holes 23. The other end of the second piston rod 15 is provided with an end plate 16, and a threaded area 19 is provided below the end plate 16. A locking nut 17 is provided on the threaded area 19. The mounting plate 18 is located between the end plate 16 and the locking nut 17. The mounting plate 18 is symmetrically provided with arcuate through holes 3, and the ends of the two second piston rods 15 are respectively located in the two arcuate through holes 3.

[0032] First, the arc-shaped through hole 3 is provided to avoid interference between the second piston rod 15 and the mounting plate 18 when the first piston rod 6 rotates, that is, the working principle of the damping structure setting is as follows: taking this device as an infusion tool for explanation, when the first spring 5 recovers its deformation, the torque of the first spring 5 returning to its original position will be too fast, which will cause the positive pressure applied to the liquid storage bottle 31 to be too large, resulting in the problem of excessive infusion speed and unstable infusion speed. Therefore, the setting of the damping structure can drive the mounting plate 18 to move downward when the first spring 5 returns to its original position, thereby driving the second piston rod 15 to move downward, and then causing the air in the lower part of the second piston cylinder 14 to move slowly upward from the air vent 23, thereby controlling the returning speed of the first spring 5, so that the stored energy of the first spring 5 is slowly and steadily released, thereby improving the stability of liquid delivery during infusion, and at the same time controlling the flow rate;

[0033] The setting of the blocking holes 24 on the upper baffle 22 and the lower baffle 21 can be achieved by rotating the second piston rod 15 so that the blocking holes and the air holes 23 on the upper baffle 22 and the lower baffle 21 are staggered, thereby changing the air permeability area of ​​the air holes 23, and then adjusting the damping effect of the damping structure. Of course, the setting of the locking nut 17 is, on the one hand, to block the downward movement of the mounting plate 18 when the device is used as an infusion tool, thereby driving the second piston rod 15 to move downward. At the same time, the locking nut 17 can be rotated to clamp it on the mounting plate 18, thereby limiting the rotation of the second screw 25, thereby avoiding the problem that the second piston rod 15 rotates during use, resulting in a change in the area of ​​the air hole 23.

[0034] In one practicable embodiment, the liquid storage bottle 31 includes a main body, with a bottle mouth at each end, and a sealing plug 32 inside each bottle mouth. The end of the insertion tube 2 and the end of the infusion tube 33 are respectively inserted into the two sealing plugs 32 to communicate with the interior of the liquid storage bottle 31. This design of the liquid storage bottle 31 can meet the use requirements of the present technical solution. At the same time, when the liquid storage bottle 31 is used as an infusion tool, it is preferably provided with a medicine bag therein, and the medicine liquid is injected into the medicine bag. At the same time, when blood transfusion is performed, a bag of blood can also be placed in the liquid storage bottle 31. This has the advantage of preventing direct contact between air and the medicine liquid or blood.

[0035] In one feasible embodiment, a limiting assembly for limiting the position of the liquid storage bottle 31 is provided on the outer side surface of the lower end of the first piston cylinder 1, and the limiting assembly includes a symmetrically arranged screw 25, one end of the screw 25 is fixed on the first piston cylinder 1, and the other end of the screw 25 is provided with an adjusting nut 26, a mounting ring 27 is slidingly sleeved on the screw 25, and a connecting rod 28 is provided on the mounting ring 27, one end of the connecting rod 28 is fixed on the mounting ring 27, and a support plate 30 is provided on the other end of the two connecting rods 28, and both ends of the support plate 30 are fixed on the connecting rod 28, and a limiting hole is provided in the middle of the support plate 30, and the diameter of the limiting hole is larger than the bottle mouth diameter of the liquid storage bottle 31 and smaller than the main body diameter of the bottle body of the liquid storage bottle 31.

[0036] With this arrangement, an upward force can be applied to the mounting ring 27 by rotating the adjusting nut 26, so that the liquid storage bottle 31 can be clamped between the support plate 30 and the end of the first piston cylinder 1, thereby limiting the position of the liquid storage bottle 31 for easy use during patient movement.

[0037] In one practicable embodiment, a third spring 29 is provided between the mounting ring 27 and the adjusting nut 26 . The third spring 29 is sleeved on the screw 25 , and one end of the third spring 29 is fixed on the mounting ring 27 , and the other end of the third spring 29 is rotatably connected to the adjusting nut 26 .

[0038] The setting of the third spring 29 can provide a supporting force through the third spring 29, which can buffer the force applied to the liquid storage bottle 31 when it moves up and down, thereby protecting the liquid storage bottle 31. At the same time, by pulling the support plate 30 downward, the characteristic spring is deformed, and the distance between the support plate 30 and the first piston cylinder 1 is increased, so that the liquid storage bottle 31 can be replaced more simply. At the same time, when installing a new liquid storage bottle 31, it is only necessary to put it in and then loosen the support plate 30. After the third spring 29 is reset, a clamping force can be applied to the liquid storage bottle 31, which makes it more convenient to use. That is, the adjusting nut 26 in this way can adjust the clamping force of the spring, which will not be elaborated here.

[0039] In one practicable manner, a sponge cushion layer is provided on the contact surface between the support plate 30 and the liquid storage bottle 31 , which plays a certain protective role for the liquid storage bottle 31 .

[0040] It should be noted that the infusion tube 33 in this technical solution is existing technology, and it should also include a flow rate control valve, etc., which is more effective when used with this device (the on and off of the infusion tube 33 can be controlled). We will not go into too much detail here. At the same time, this device can be used as an infusion tool and a suction tool. The usage method when used as a suction tool can be simply inferred based on the usage principle when used as an infusion tool. Therefore, the principle part of using it as a suction tool is not elaborated in detail in the text.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A multifunctional infusion device for emergency rescue, characterized by: The invention comprises a multifunctional end head, a liquid storage bottle (31) and an infusion tube (33) connected in sequence, wherein the multifunctional end head comprises a first piston cylinder (1), a first piston (4) is provided inside the first piston cylinder (1), a first spring (5) is provided between the first piston (4) and the inner wall of the upper end of the first piston cylinder (1), the two ends of the first spring (5) are respectively fixedly connected to the first piston (4) and the inner side surface of the end of the first piston cylinder (1), a first piston rod (6) is provided in the middle of the surface of the first piston (4) on which the first spring (5) is provided, one end of the first piston rod (6) is rotatably connected to the first piston (4), the other end of the first piston rod (6) passes through a through hole provided at the end of the first piston cylinder (1), and the first piston rod (6) is symmetrically provided with grooves ( 7), a convex block (8) corresponding to the position of the groove (7) is provided in the through hole provided on the end of the first piston cylinder (1), and the convex block (8) is slidably connected to the groove (7), the portion of the first piston rod (6) located in the first piston cylinder (1) is provided with a lower limiting groove (9), and the portion of the first piston rod (6) located outside the first piston cylinder (1) is provided with an upper limiting groove (10), and a plug-in tube (2) is provided in the middle of the lower end surface of the first piston cylinder (1), one end of the plug-in tube (2) is fixedly connected to the end of the first piston cylinder (1) and communicated with the interior of the first piston cylinder (1), the other end of the plug-in tube (2) is plugged into the interior of one end of the liquid storage bottle (31), and one end of the infusion tube (33) is plugged into the interior of the other end of the liquid storage bottle (31); A gas passage is provided through the middle of the first piston (4) and the middle of the first piston rod (6), a pull rod (11) is provided in the gas passage, the diameter of the pull rod (11) is smaller than the diameter of the gas passage, a sealing ball (12) is provided at one end of the pull rod (11) below the first piston (4), the diameter of the sealing ball (12) is larger than the diameter of the gas passage, one end of the sealing ball (12) is fixed on the pull rod (11), and the other end of the pull rod (11) extends to the outside of the end of the first piston rod (6), a second spring (13) is provided on the outside of the end of the first piston rod (6), and the two ends of the second spring (13) are respectively fixed to the ends of the first piston rod (6) and the pull rod (11).

2. The multifunctional infusion device for emergency rescue according to claim 1, characterized in that: A mounting plate (18) is provided on one end of the first piston rod (6) connected to the second spring (13), and the middle portion of the mounting plate (18) is sleeved and fixed on the outer side of the end portion of the first piston rod (6). Two groups of damping structures are symmetrically provided on the mounting plate (18), and the damping structure includes a second piston cylinder (14), a second piston (20) is provided inside the second piston cylinder (14), a second piston rod (15) is provided in the middle portion of the second piston (20), and the middle portion of the second piston (20) is slidably connected to the second piston rod (15). The upper and lower ends of the second piston (20) are respectively provided with an upper baffle (22) and a sleeved and fixed upper baffle (22) provided on the second piston rod (15). A lower baffle (21), the second piston (20) is provided with a plurality of circumferentially evenly distributed air holes (23), the upper baffle (22) and the lower baffle (21) are both provided with a plurality of blocking holes (24) that match the positions of the air holes (23), an end plate (16) is provided on the other end of the second piston rod (15), a threaded area (19) is provided below the end plate (16), a locking nut (17) is provided on the threaded area (19), the mounting plate (18) is located between the end plate (16) and the locking nut (17), and arc-shaped through holes (3) are symmetrically provided on the mounting plate (18), and the ends of the two second piston rods (15) are respectively located in the two arc-shaped through holes (3).

3. The multifunctional infusion device for emergency rescue according to claim 1, characterized in that: The liquid storage bottle (31) comprises a bottle body, both ends of which are provided with bottle openings, and the interiors of the bottle openings are provided with sealing plugs (32), and the ends of the insertion tube (2) and the end of the infusion tube (33) are respectively inserted into the two sealing plugs (32) to communicate with the interior of the liquid storage bottle (31).

4. The multifunctional infusion device for emergency rescue according to claim 1, characterized in that: The outer side surface of the lower end of the first piston cylinder (1) is provided with a limiting assembly for limiting the position of the liquid storage bottle (31), and the limiting assembly includes a symmetrically arranged screw rod (25), one end of the screw rod (25) is fixed to the first piston cylinder (1), and the other end of the screw rod (25) is provided with an adjusting nut (26), a mounting ring (27) is slidably sleeved on the screw rod (25), and a connecting rod (28) is provided on the mounting ring (27), one end of the connecting rod (28) is fixed to the mounting ring (27), and a supporting plate (30) is provided on the other ends of the two connecting rods (28), both ends of the supporting plate (30) are fixed to the connecting rod (28), and a limiting hole is provided in the middle of the supporting plate (30), and the diameter of the limiting hole is larger than the diameter of the bottle mouth of the liquid storage bottle (31) and smaller than the diameter of the bottle body of the liquid storage bottle (31).

5. The multifunctional infusion device for emergency rescue according to claim 4, characterized in that: A third spring (29) is provided between the mounting ring (27) and the adjusting nut (26). The third spring (29) is sleeved on the screw rod (25), and one end of the third spring (29) is fixed to the mounting ring (27), and the other end of the third spring (29) is rotatably connected to the adjusting nut (26).

6. The multifunctional infusion device for emergency rescue according to claim 4, characterized in that: A sponge cushion layer is provided on the contact surface between the support plate (30) and the liquid storage bottle (31).

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