A high-precision medical infusion pump

Abstract

The present invention relates to the field of medical infusion pumps, and discloses a high-precision medical infusion pump, including an infusion pump box, a cover plate rotatably mounted on the infusion pump box, a peristaltic infusion assembly installed in the infusion pump box, the peristaltic infusion assembly including a mounting frame fixed in the infusion pump box, a transmission shaft rotatably mounted on the upper and lower side walls of the mounting frame, the end of the transmission shaft rotatably mounted with the bottom of the infusion pump box, a plurality of cams fixedly mounted on the outer surface of the transmission shaft, a driven gear fixedly mounted on the outer surface of the end of the transmission shaft, and a liquid pump installed in the infusion pump box. Compared with the prior art, the present application has the advantages of high infusion accuracy, good protection effect on the infusion pipeline, controllable infusion temperature and heat preservation, etc., and solves a series of problems such as the inability to ensure the protection of the infusion tube itself and the influence of low temperature on the infusion accuracy.

Description

Technical Field

[0001] The invention relates to the field of medical infusion pumps, in particular to a high-precision medical infusion pump. Background Art

[0002] An infusion pump is usually a mechanical or electronic control device that controls the infusion rate by acting on the infusion catheter. It is often used in situations where the infusion volume and drug dosage need to be strictly controlled, such as when using pressor drugs, antiarrhythmic drugs, intravenous infusion for infants or intravenous anesthesia.

[0003] At present, the working principle of the infusion pump is to use a peristaltic pump to squeeze the infusion tube, so as to achieve the effect of uniform and constant speed infusion. In this process, the peristaltic part is in direct squeezing contact with the infusion tube, which requires multiple peristaltic structures to achieve. The peristaltic structure itself does not have the squeezing effect on the infusion tube. The infusion efficiency is determined by the peristaltic speed, but high-speed peristalsis will cause serious damage to the infusion tube. Therefore, we need to ensure the infusion efficiency under the condition of reducing the speed;

[0004] In addition, in the cold winter, the flexibility of the infusion pipeline will change with the change of temperature, and the lower temperature may cause it to harden. This change will affect the infusion pump's control over the liquid flow, and the viscosity of the infusion medicine will change with the change of temperature. The increase or decrease in viscosity may affect the infusion pump's control accuracy over the liquid flow, as well as the human body's absorption efficiency of the medicine. Therefore, based on the above problems, the present invention provides a high-precision medical infusion pump. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a high-precision medical infusion pump, which has the advantages of high infusion accuracy, good protection of the infusion pipeline, controllable infusion temperature and heat preservation, etc., and solves a series of problems such as the inability to guarantee the protection of the infusion tube itself and the influence of low temperature on the infusion accuracy.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision medical infusion pump, comprising an infusion pump box, a cover plate rotatably mounted on the infusion pump box, a peristaltic infusion assembly installed in the infusion pump box, the peristaltic infusion assembly comprising a mounting frame fixed in the infusion pump box, a transmission shaft rotatably mounted on the upper and lower side walls of the mounting frame, the end of the transmission shaft is rotatably mounted on the bottom of the infusion pump box, a plurality of cams are fixedly sleeved on the outer surface of the transmission shaft, a driven gear is fixedly sleeved on the outer surface of the end of the transmission shaft, a liquid pump is installed in the infusion pump box, and the output end of the liquid pump is fixedly sleeved A driving gear is fixedly connected, the driving gear and the driven gear are meshed, the side wall of the installation frame is telescopically provided with a plurality of peristaltic blocks, a heating frame is provided below the peristaltic block, the heating frame is fixed to the inner side wall of the installation frame, a connecting pipe is connected between the heating frame and the adjacent peristaltic block, a circulation pipe is connected between the uppermost peristaltic block on the installation frame and the lowermost heating frame, a circulation pump is installed above the installation frame, the two ends of the circulation pipe are respectively connected to the output end and the input end of the circulation pump, an electric heating wire is provided in the heating frame, and the electric heating wires between adjacent heating frames are connected in series through a wire;

[0007] The two side walls of the peristaltic block are rotatably connected with the first guide block, the two side walls inside the installation frame are fixedly connected with the first connecting block, a first guide rod is slidably penetrated on the first guide block, one end of the first guide rod is fixedly connected to the inner side wall of the installation frame, the other end of the first guide rod is fixedly connected to the first connecting block, a first spring is sleeved on the outer surface of the first guide rod, and the first spring is located between the first guide block and the first connecting block;

[0008] An upper infusion tube clamp and a lower infusion tube clamp are fixedly arranged on the upper and lower sides of the side wall of the infusion pump box, respectively. Infusion tubes are clamped on the upper infusion tube clamp and the lower infusion tube clamp, and the infusion tubes are located on one side of the plurality of peristaltic blocks.

[0009] Preferably, a plurality of heating wires and the wires connected thereto are connected in series with the connection terminals of the liquid pump.

[0010] Preferably, the cams mounted on the outer surface of the transmission shaft are provided with twelve groups, the twelve groups of cams are evenly distributed on the surface of the transmission shaft, and the peristaltic blocks are provided with twelve groups corresponding to the cams.

[0011] Preferably, the heating frame is a trapezoidal structure, and a roller is rotatably mounted on the bottom of the peristaltic block.

[0012] Preferably, a bubble sensor is installed between the upper infusion tube clamp and the peristaltic infusion assembly, a bubble sensor is installed above the lower infusion tube clamp, and an infusion tube stop clamp is installed below the lower infusion tube clamp.

[0013] Preferably, a mounting hole is formed below the cover plate, a mounting head is rotatably connected to the mounting hole through a thread, one end of the mounting head is fixedly connected to a bubble row needle, and the other end of the mounting head is screwed to a liquid storage bag through a thread.

[0014] Preferably, a vertical frame is fixedly provided in the middle of the cover plate, a plurality of stop blocks are telescopically installed on the side walls of the vertical frame, second guide blocks are fixedly connected to both sides of the ends of the stop blocks extending into the vertical frame, second connecting blocks are fixedly provided on both sides of the vertical frame, a second guide rod is slidably penetrated through the second guide block, the end of the second guide rod is fixedly connected to the second connecting block, and a second spring is sleeved on the outer surface of the second guide rod.

[0015] Preferably, the portion of the stopper extending out of the vertical frame is a raised arc-shaped structure, and twelve groups of stoppers are arranged on the vertical frame, and the stoppers and the creeping blocks are arranged correspondingly.

[0016] Compared with the prior art, the present invention provides a high-precision medical infusion pump, which has the following beneficial effects:

[0017] 1. A high-precision medical infusion pump. When the peristaltic block is pushed out of the mounting frame by the cam, the peristaltic block initially moves in a straight line until the roller at the bottom of the peristaltic block contacts the heating frame, and the peristaltic block is gradually lifted. Because the peristaltic block is rotatably connected to the first guide block, there is also a downward movement path during the process of the peristaltic block being pushed out. The overall movement path of the end of the peristaltic block is parabolic, which has a downward squeezing effect on the infusion tube, thereby improving the infusion efficiency and stability.

[0018] 2. A high-precision medical infusion pump. When the infusion pump is started, the liquid pump is turned on, and the wire connected in series with the liquid pump terminal is energized. The terminal of the circulation pump is also connected in series with the liquid pump terminal. The circulation pump works synchronously, and the peristaltic block and the heating frame below it are filled with a heating solution. The circulation pump can drive the peristaltic block, the heating frame, the connecting tube and the heating solution filled in the circulation tube to circulate. The electric heating wire connected in series with the wire heats the circulating solution, thereby heating the peristaltic block itself. After the peristaltic block contacts the infusion tube, the heat is transferred to the infusion tube and the medicine flowing therein. Not only can the infusion tube itself be prevented from hardening, but the medicine can also be heated. Not only can the high-precision transmission of the medicine be guaranteed and the low temperature can be prevented from affecting the infusion accuracy, but also the low-temperature medicine can be prevented from directly entering the human body, thereby improving the human body's accelerated absorption of the medicine.

[0019] 3. This high-precision medical infusion pump fixes the infusion tube by the upper infusion tube clamp and the lower infusion tube clamp, and then closes the cover. During this process, the bubble discharge needle is directly inserted into the infusion tube. When the bubble sensor between the upper infusion tube clamp and the peristaltic infusion component detects bubbles in the infusion tube, the infusion pump does not stop working, but clamps the infusion tube part below the lower infusion tube clamp by the infusion tube stop clamp, and the medicine and the bubbles therein are discharged into the liquid storage bag along the bubble discharge needle until the bubble sensors between the upper infusion tube clamp and the peristaltic infusion component and above the lower infusion tube clamp detect no bubbles. At this time, the infusion tube stop clamp is released again and the infusion is continued.

[0020] 4. This high-precision medical infusion pump fixes the infusion tube by means of the upper infusion tube clamp and the lower infusion tube clamp, and then closes the cover. At this time, the infusion tube is located between the peristaltic block and the stop block. During infusion, as the peristaltic block moves, the stop block is continuously squeezed and reset. Compared with the traditional rigid structure, it can prevent the infusion tube from continuously losing its deformation ability due to squeezing, making the peristaltic infusion ineffective. It can also protect the infusion tube and prevent it from being squeezed by rigidity, especially for infusion tubes with larger diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is an enlarged structural schematic diagram of location A of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation structure of the installation head of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation structure of the installation frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the installation frame of the present invention;

[0026] Figure 6 This is a schematic diagram of the installation structure of the circulation pipe of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation structure of the creeping block of the present invention;

[0028] Figure 8 This is a schematic diagram of the installation structure of the heating frame of the present invention;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the vertical frame of the present invention.

[0030] In the figure: 1. lower infusion tube clamp; 2. peristaltic infusion assembly; 3. infusion pump box; 4. upper infusion tube clamp; 5. infusion tube; 6. cover plate; 7. vertical frame; 8. bubble row needle; 9. mounting hole; 10. mounting head; 11. liquid storage bag; 12. mounting frame; 13. peristaltic block; 14. cam; 15. liquid pump; 16. driven gear; 17. driving gear; 18. transmission shaft; 19. circulation tube; 20. circulation pump; 21. first guide rod; 22. first guide block; 23. first spring; 24. first connecting block; 25. heating frame; 26. wire; 27. connecting tube; 28. block; 29. ​​second guide block; 30. second spring; 31. second guide rod; 32. second connecting block; 33. roller. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0032] like Figure 1-8 As shown, a high-precision medical infusion pump comprises

[0033] An infusion pump box 3, on which a cover plate 6 is rotatably mounted, a peristaltic infusion assembly 2 is mounted in the infusion pump box 3, the peristaltic infusion assembly 2 comprises a mounting frame 12 fixed in the infusion pump box 3, a plurality of peristaltic blocks 13 are telescopically arranged on the side wall of the mounting frame 12, an upper infusion tube clamp 4 and a lower infusion tube clamp 1 are respectively fixedly arranged on the upper and lower sides of the side wall of the infusion pump box 3, an infusion tube 5 is clamped on the upper infusion tube clamp 4 and the lower infusion tube clamp 1, and the infusion tube 5 is located on one side of the plurality of peristaltic blocks 13;

[0034] Before using the infusion pump to control the infusion of the infusion tube 5, the infusion tube 5 needs to be fixed first. Specifically, the infusion tube 5 is first fixed from top to bottom through the upper infusion tube clamp 4 and the lower infusion tube clamp 1. At this time, the infusion tube 5 is located on one side of the peristaltic block 13. Then the cover plate 6 is covered, and the peristaltic pump principle is used to achieve uniform and continuous infusion control.

[0035] A transmission shaft 18 is rotatably installed on the upper and lower side walls of the installation frame 12, and the end of the transmission shaft 18 is rotatably installed with the bottom of the infusion pump box 3. A plurality of cams 14 are fixedly sleeved on the outer surface of the transmission shaft 18, and a driven gear 16 is fixedly sleeved on the outer surface of the end of the transmission shaft 18. A liquid pump 15 is installed in the infusion pump box 3, and a driving gear 17 is fixedly connected to the output end of the liquid pump 15, and the driving gear 17 is meshed with the driven gear 16. A heating frame 25 is arranged below the peristaltic block 13, and the heating frame 25 is fixed to the inner side wall of the installation frame 12. The two side walls of the peristaltic block 13 are rotatably connected with a first guide block 22, and the two side walls of the installation frame 12 are fixedly connected with a first connecting block 24. A first guide rod 21 is slidably penetrated on the first guide block 22, and one end of the first guide rod 21 is fixedly connected to the inner side wall of the installation frame 12, and the other end of the first guide rod 21 is fixedly connected to the first connecting block 24. The outer surface of the first guide rod 21 is sleeved with a first spring 23, and the first spring 23 is located between the first guide block 22 and the first connecting block 24.

[0036] After the infusion tube 5 is fixed, the liquid pump 15 is turned on. The liquid pump 15 drives the driving gear 17 to rotate, and the driven gear 16 meshing with the driving gear 17 rotates synchronously. The transmission shaft 18 connected to the driven gear 16 rotates synchronously, and a plurality of cams 14 on the surface of the transmission shaft 18 rotate synchronously. During the rotation of the cam 14, when the raised portion of the cam 14 contacts the peristaltic block 13, the cam 14 pushes the peristaltic block 13 to extend out of the mounting frame 12, and the first spring 23 is stretched at this time. Similarly, when the raised portion of the cam 14 is away from the peristaltic block 13, the peristaltic block 13 is reset under the action of the stretched first spring 23, wherein , there are twelve groups of cams 14 set on the outer surface of the transmission shaft 18, and the twelve groups of cams 14 are evenly distributed on the surface of the transmission shaft 18, and the peristaltic blocks 13 are provided with twelve groups corresponding to the cams 14, and the twelve groups of cams 14 on the surface of the transmission shaft 18 are distributed from top to bottom in accordance with a certain angle. When the liquid pump 15 is working, the raised part of the uppermost cam 14 first contacts the uppermost peristaltic block 13, and when the transmission shaft 18 rotates one circle, the raised part of the lowermost cam 14 contacts the lowermost peristaltic block 13, thereby realizing the peristaltic movement of the twelve groups of peristaltic blocks 13, and realizing uniform quantitative infusion through this movement;

[0037] It is worth mentioning that the above-mentioned infusion principle is the principle of a traditional infusion pump. In this case, the movement path of the peristaltic block 13 is completely perpendicular to the mounting frame 12 and is straight, and the infusion efficiency becomes low. Therefore, the heating frame 25 is a trapezoidal structure, and a roller 33 is rotatably installed at the bottom of the peristaltic block 13, that is, when the peristaltic block 13 is ejected out of the mounting frame 12 by the cam 14, the peristaltic block 13 initially moves in a straight line until the roller 33 at the bottom of the peristaltic block 13 contacts the heating frame 25, and the peristaltic block 13 is gradually lifted. Because the peristaltic block 13 is rotatably connected to the first guide block 22, there is also a downward movement path during the process of the peristaltic block 13 being ejected. The overall movement path of the end of the peristaltic block 13 is parabolic, which has a downward squeezing effect on the infusion tube 5, thereby improving the infusion efficiency and stability.

[0038] In addition, temperature will also affect the accuracy of the infusion pump. In the cold winter, the infusion cannot be guaranteed to be accurate when using an infusion pump for infusion, which is life-threatening for seriously injured patients. Therefore, a connecting tube 27 is connected between the heating frame 25 and the adjacent peristaltic block 13, a circulation tube 19 is connected between the uppermost peristaltic block 13 on the mounting frame 12 and the lowermost heating frame 25, a circulation pump 20 is installed on the upper part of the mounting frame 12, and the two ends of the circulation tube 19 are respectively connected to the output end and the input end of the circulation pump 20, and a heating wire is arranged in the heating frame 25. The heating wires between adjacent heating frames 25 are connected in series through a wire 26, and a plurality of heating wires and the wires 26 connected thereto are connected in series with the wiring terminals of the liquid pump 15;

[0039] When the infusion pump is started, the liquid pump 15 is turned on to work, and the wire 26 connected in series with the terminal of the liquid pump 15 is energized. The terminal of the circulating pump 20 is also connected in series with the terminal of the liquid pump 15. The circulating pump 20 works synchronously, and the peristaltic block 13 and the heating frame 25 below it are filled with a heating solution. The circulating pump 20 can drive the peristaltic block 13, the heating frame 25, the connecting tube 27 and the circulating tube 19 to circulate. The electric heating wire connected in series with the wire 26 heats the circulating solution, thereby heating the peristaltic block 13 itself. After the peristaltic block 13 contacts the infusion tube 5, the heat is transferred to the infusion tube 5 and the medicine flowing therein, which not only prevents the infusion tube 5 itself from hardening, but also heats the medicine. Not only does it ensure high-precision transmission of the medicine and prevent low temperature from affecting the infusion accuracy, but it can also prevent low-temperature medicine from directly entering the human body, thereby improving the human body's accelerated absorption of the medicine. Example 2

[0040] The difference between this embodiment and embodiment 1 is that: a bubble sensor is installed between the upper infusion tube clamp 4 and the peristaltic infusion assembly 2, a bubble sensor is installed above the lower infusion tube clamp 1, and an infusion tube stop clamp is installed below the lower infusion tube clamp 1. A mounting hole 9 is penetrated below the cover plate 6, and a mounting head 10 is connected to the mounting hole 9 by screw thread rotation. One end of the mounting head 10 is fixedly connected to the bubble row needle 8, and the other end of the mounting head 10 is screwed to the liquid storage bag 11 by screw thread. After the infusion tube 5 is fixed by the upper infusion tube clamp 4 and the lower infusion tube clamp 1, the cover plate 6 is closed. During this process, the bubble discharge needle 8 is directly inserted into the infusion tube 5. When the bubble sensor between the upper infusion tube clamp 4 and the peristaltic infusion component 2 detects bubbles in the infusion tube 5, the infusion pump does not stop working, but clamps the infusion tube 5 below the lower infusion tube clamp 1 through the infusion tube stop clamp, and the drug solution and the bubbles therein are discharged into the liquid storage bag 11 along the bubble discharge needle 8 until the bubble sensors between the upper infusion tube clamp 4 and the peristaltic infusion component 2 and above the lower infusion tube clamp 1 do not detect bubbles. At this time, the infusion tube stop clamp is released again and the infusion is continued.

[0041] The infusion tube clamp mentioned above is a basic electrical control structure of an existing infusion pump, which is used to respond quickly and clamp the infusion tube 5 to stop infusion and avoid the occurrence of emergency situations. Example 3

[0042] The difference between this embodiment and the first embodiment is that a vertical frame 7 is fixedly arranged in the middle of the cover plate 6, a plurality of stoppers 28 are telescopically installed on the side walls of the vertical frame 7, second guide blocks 29 are fixedly connected to the ends of the stoppers 28 extending into the vertical frame 7, second connecting blocks 32 are fixedly arranged on both sides of the vertical frame 7, a second guide rod 31 is slidably penetrated on the second guide block 29, the ends of the second guide rod 31 are fixedly connected to the second connecting block 32, a second spring 30 is sleeved on the outer surface of the second guide rod 31, the portion of the stoppers 28 extending out of the vertical frame 7 is a convex arc structure, and the stoppers 28 arranged on the vertical frame 7 are provided with a plurality of stoppers 28 extending out of the vertical frame 7. Twelve groups are provided, and the stop blocks 28 are provided corresponding to the peristaltic blocks 13. After the infusion tube 5 is fixed by the upper infusion tube clamp 4 and the lower infusion tube clamp 1, the cover plate 6 is closed. At this time, the infusion tube 5 is located between the peristaltic block 13 and the stop blocks 28. When infusion is performed, as the peristaltic block 13 moves, the stop blocks 28 are continuously squeezed and reset. Compared with the traditional rigid structure, it can prevent the infusion tube 5 from continuously losing its deformation ability due to squeezing, making the peristaltic infusion lose its effect, and can protect the infusion tube 5 from being squeezed by the rigidity, especially for the infusion tube 5 with a larger diameter.

[0043] The working principle of the present invention is as follows: when in use, after the infusion tube 5 is fixed, the liquid pump 15 is turned on, and the liquid pump 15 drives the driving gear 17 to rotate, and the driven gear 16 meshing with the driving gear 17 rotates synchronously, and the transmission shaft 18 connected to the driven gear 16 rotates synchronously, and a plurality of cams 14 on the surface of the transmission shaft 18 rotate synchronously. During the rotation of the cam 14, when the raised portion of the cam 14 contacts the peristaltic block 13, the cam 14 pushes the peristaltic block 13 to extend out of the mounting frame 12, and at this time the first spring 23 is stretched. Similarly, when the raised portion of the cam 14 is away from the peristaltic block 13, under the action of the stretched first spring 23, the peristaltic block 13 reset, wherein the cams 14 set on the outer surface of the transmission shaft 18 are provided with twelve groups, and the twelve groups of cams 14 are evenly distributed on the surface of the transmission shaft 18, and the peristaltic blocks 13 are provided with twelve groups corresponding to the cams 14, and the twelve groups of cams 14 on the surface of the transmission shaft 18 are distributed in sequence from top to bottom at a certain angle. When the liquid pump 15 is working, the convex part of the uppermost cam 14 first contacts the uppermost peristaltic block 13, and when the transmission shaft 18 rotates one circle, the convex part of the lowermost cam 14 contacts the lowermost peristaltic block 13, thereby realizing the peristaltic movement of the twelve groups of peristaltic blocks 13, and realizing uniform quantitative infusion through the movement;

[0044] It is worth mentioning that the above-mentioned infusion principle is the principle of a traditional infusion pump. In this case, the movement path of the peristaltic block 13 is completely perpendicular to the mounting frame 12 and is straight, and the infusion efficiency becomes low. Therefore, the heating frame 25 is a trapezoidal structure, and a roller 33 is rotatably installed at the bottom of the peristaltic block 13, that is, when the peristaltic block 13 is ejected out of the mounting frame 12 by the cam 14, the peristaltic block 13 initially moves in a straight line until the roller 33 at the bottom of the peristaltic block 13 contacts the heating frame 25, and the peristaltic block 13 is gradually lifted. Because the peristaltic block 13 is rotatably connected to the first guide block 22, there is also a downward movement path during the process of the peristaltic block 13 being ejected. The overall movement path of the end of the peristaltic block 13 is parabolic, which has a downward squeezing effect on the infusion tube 5, thereby improving the infusion efficiency and stability.

[0045] When the infusion pump is started, the liquid pump 15 is turned on to work, and the wire 26 connected in series with the terminal of the liquid pump 15 is energized. The terminal of the circulating pump 20 is also connected in series with the terminal of the liquid pump 15. The circulating pump 20 works synchronously, and the peristaltic block 13 and the heating frame 25 below it are filled with a heating solution. The circulating pump 20 can drive the peristaltic block 13, the heating frame 25, the connecting tube 27 and the circulating tube 19 to circulate. The electric heating wire connected in series with the wire 26 heats the circulating solution, thereby heating the peristaltic block 13 itself. After the peristaltic block 13 contacts the infusion tube 5, the heat is transferred to the infusion tube 5 and the medicine flowing therein, which not only prevents the infusion tube 5 itself from hardening, but also heats the medicine. Not only does it ensure high-precision transmission of the medicine and prevent low temperature from affecting the infusion accuracy, but it can also prevent low-temperature medicine from directly entering the human body, thereby improving the human body's accelerated absorption of the medicine.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision medical infusion pump, characterized in that: include An infusion pump box (3) is provided, wherein a cover plate (6) is rotatably mounted on the infusion pump box (3), a peristaltic infusion assembly (2) is installed in the infusion pump box (3), and the peristaltic infusion assembly (2) comprises a mounting frame (12) fixed in the infusion pump box (3), a transmission shaft (18) is rotatably mounted on the upper and lower side walls of the mounting frame (12), an end of the transmission shaft (18) is rotatably mounted on the bottom of the infusion pump box (3), a plurality of cams (14) are fixedly sleeved on the outer surface of the transmission shaft (18), a driven gear (16) is fixedly sleeved on the outer surface of the end of the transmission shaft (18), a liquid pump (15) is installed in the infusion pump box (3), an output end of the liquid pump (15) is fixedly connected to a driving gear (17), and the driving gear (17) and the driven gear ( 16) meshing, the side wall of the installation frame (12) is telescopically provided with a plurality of peristaltic blocks (13), a heating frame (25) is provided below the peristaltic block (13), the heating frame (25) is fixed to the inner wall of the installation frame (12), a connecting pipe (27) is connected between the heating frame (25) and its adjacent peristaltic block (13), a circulation pipe (19) is connected between the uppermost peristaltic block (13) on the installation frame (12) and the lowermost heating frame (25), a circulation pump (20) is installed at the upper part of the installation frame (12), the two ends of the circulation pipe (19) are respectively connected to the output end and the input end of the circulation pump (20), a heating wire is provided in the heating frame (25), and the heating wires between adjacent heating frames (25) are connected in series through a wire (26); The two side walls of the peristaltic block (13) are rotatably connected to first guide blocks (22), the two side walls inside the installation frame (12) are fixedly connected to first connecting blocks (24), a first guide rod (21) is slidably passed through the first guide block (22), one end of the first guide rod (21) is fixedly connected to the inner side wall of the installation frame (12), the other end of the first guide rod (21) is fixedly connected to the first connecting block (24), the outer surface of the first guide rod (21) is sleeved with a first spring (23), and the first spring (23) is located between the first guide block (22) and the first connecting block (24); An upper infusion tube clamp (4) and a lower infusion tube clamp (1) are fixedly arranged at the upper and lower parts of the side walls of the infusion pump box (3), respectively; an infusion tube (5) is clamped on the upper infusion tube clamp (4) and the lower infusion tube clamp (1), and the infusion tube (5) is located on one side of the plurality of peristaltic blocks (13); A plurality of heating wires and the wires (26) connected thereto are connected in series with the terminal of the liquid pump (15); The cams (14) mounted on the outer surface of the transmission shaft (18) are provided in twelve groups, the twelve groups of cams (14) are evenly distributed on the surface of the transmission shaft (18), and the creeping blocks (13) are provided in twelve groups corresponding to the cams (14); The heating frame (25) is a trapezoidal structure, and a roller (33) is rotatably mounted on the bottom of the peristaltic block (13); When the peristaltic block (13) is pushed out of the mounting frame (12) by the cam (14), the peristaltic block (13) initially moves in a straight line until the roller (33) at the bottom of the peristaltic block (13) contacts the heating frame (25), and the peristaltic block (13) is gradually lifted.

2. A high-precision medical infusion pump according to claim 1, characterized in that: A bubble sensor is installed between the upper infusion tube clamp (4) and the peristaltic infusion assembly (2), a bubble sensor is installed above the lower infusion tube clamp (1), and an infusion tube stop clamp is installed below the lower infusion tube clamp (1).

3. A high-precision medical infusion pump according to claim 1, characterized in that: A mounting hole (9) is formed below the cover plate (6), a mounting head (10) is rotatably connected to the mounting hole (9) via a thread, one end of the mounting head (10) is fixedly connected to a bubble discharge needle (8), and the other end of the mounting head (10) is screwed to a liquid storage bag (11) via a thread.

4. A high-precision medical infusion pump according to claim 3, characterized in that: A vertical frame (7) is fixedly arranged in the middle of the cover plate (6), and a plurality of stop blocks (28) are telescopically mounted on the side walls of the vertical frame (7). Second guide blocks (29) are fixedly connected to both sides of the ends of the stop blocks (28) extending into the vertical frame (7). Second connecting blocks (32) are fixedly arranged on both sides of the vertical frame (7). A second guide rod (31) is slidably penetrated through the second guide block (29), and the ends of the second guide rod (31) are fixedly connected to the second connecting block (32). A second spring (30) is sleeved on the outer surface of the second guide rod (31).

5. A high-precision medical infusion pump according to claim 4, characterized in that: The portion of the stopper (28) extending out of the vertical frame (7) is a raised arc-shaped structure. Twelve groups of stoppers (28) are provided on the vertical frame (7), and the stoppers (28) and the creeping blocks (13) are provided correspondingly.

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