Infusion pump simple and convenient to operate

Abstract

The invention relates to the technical field of liquid conveying tools, in particular to a simple and convenient-to-operate infusion pump which comprises an upper mounting plate and a lower mounting plate, a circular guide part is arranged between the upper mounting plate and the lower mounting plate for connection, and a circular mounting seat is arranged at the top of the circular guide part. Different patients are different in infusion speed tolerance, and cardiovascular systems and body functions of children and old people are different from those of adults. The heart function of a child is relatively weak, and the too high infusion speed may aggravate the heart burden and cause serious consequences such as heart failure; old people are poor in vascular elasticity and too high in infusion speed, local vascular pressure is too high, leakage occurs and the like, the infusion speed can be flexibly adjusted by adjusting the pressure applied by the liquid squeezing cam according to the age, the physical condition and other factors of a patient, and the slow infusion speed can be set for children. And for adults with better physical quality, the infusion speed can be properly accelerated if necessary.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid delivery tools, in particular to an infusion pump which is simple and easy to operate. Background Art

[0002] An infusion pump is a medical device that can accurately control the infusion speed and volume. It squeezes or pushes the infusion tube through a mechanical device or electronic drive system, so that the liquid enters the patient's body at a stable flow rate. Its core principle is to use a motor or other power source to drive the squeezing device (such as the roller in a peristaltic pump or the piston in a piston pump) to work according to the set program and parameters.

[0003] The infusion speed of a conventional infusion pump is achieved by adjusting the rotation speed of the motor output shaft. When the infusion speed is controlled by adjusting the rotation speed of the motor output shaft, the change in the motor rotation speed may cause a large change in the infusion speed. Compared with the squeezing effect of the adjusting roller on the infusion tube, the accuracy of this method may be lower. For some scenarios requiring high-precision infusion, the infusion speed may be required to be accurate to 0.1-0.5mL / h. It is difficult to achieve such a level of precision by adjusting the speed of the motor output shaft, and the treatment effect may be affected by speed errors. Summary of the invention

[0004] The object of the present invention is to provide an infusion pump that is simple to operate to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an infusion pump that is easy to operate, comprising an upper mounting plate and a lower mounting plate, wherein a circular guide is arranged between the upper mounting plate and the lower mounting plate for connection, a circular mounting seat is arranged on the top of the circular guide, and the circular guide is fixedly mounted at a corresponding position on the bottom of the upper mounting plate through the circular mounting seat, a groove corresponding to the shape of the circular guide is arranged on the upper surface of the lower mounting plate, an inner movable column is rotatably connected to the inner surface of the circular guide, a threaded belt is fixedly installed on the outer surface of the inner movable column, a groove corresponding to the shape of the inner movable column and the threaded belt is arranged in the circular guide, a limiting ring is fixedly installed on the outer surface of the inner movable column, and the limiting ring The positioning ring is arranged at corresponding positions at the bottom and the top of the lower mounting plate, and the bottom end of the limiting ring is fixedly installed with a hexagonal screwing ring, and the bottom of the lower mounting plate is fixedly installed with a fixing seat, and a swing plate is rotatably connected in the fixing seat, and a T-shaped rod is movably installed on the end of the swing plate away from the fixing seat, and a rectangular movable plate is fixedly installed on the top of the T-shaped rod, and an internal threaded sleeve is also fixedly installed on the end of the swing plate away from the fixing seat, and a first adjusting bolt is threadedly connected on the internal threaded sleeve, and the top end of the first adjusting bolt is rotatably connected to the rectangular movable plate, and a rotatable clamping sleeve is rotatably connected to the end of the rectangular movable plate away from the T-shaped rod, and the rotatable clamping sleeve is movably sleeved on the hexagonal screwing ring.

[0006] Preferably, the upper mounting plate and the lower mounting plate are arranged parallel to each other.

[0007] Preferably, the circular guide member is provided with positioning strips distributed in a circular array with the circular guide member as the array center, and the lower mounting plate is provided with grooves corresponding to the shapes of the circular guide member and the positioning strips.

[0008] Preferably, the structure composed of the inner movable column and the threaded belt is clearance-matched with the circular guide member.

[0009] Preferably, the inner wall of the rotatable ferrule and the outer wall of the hexagonal screwing ring are both rounded.

[0010] Preferably, a rectangular mounting groove is provided on the upper mounting plate, a group of rectangular mounting buckles are fixedly installed on the rectangular mounting groove, an insertion groove is provided on the rectangular mounting buckle, a replaceable buckle is movably installed in the rectangular mounting buckle, rectangular insertion parts corresponding to the shape of the insertion groove are fixedly installed on both sides of the replaceable buckle, a second adjusting bolt is movably installed on the replaceable buckle, and the second adjusting bolt is threadedly installed on the rectangular mounting buckle.

[0011] Preferably, a U-shaped mounting frame is fixedly installed on the top of the upper mounting plate, and the U-shaped mounting frame is rotatably connected to the rotatable cover plate. A group of limit strips are fixedly installed on the side of the rotatable cover plate corresponding to the upper mounting plate, and a replaceable pressure plate is movably installed in the limit strip, and the replaceable pressure plate is fixed to the rotatable cover plate by a third adjusting bolt.

[0012] Preferably, a plurality of sets of equidistantly arranged shaft fixing seats are fixedly installed on the top of the lower mounting plate, a rotating shaft is rotatably connected inside the shaft fixing seat, a liquid squeezing cam is provided on the outer fixed sleeve of the rotating shaft, a transmission gear is fixedly installed on the outer end of the rotating shaft, the transmission gears are transmission connected by a transmission toothed belt, a stepper motor is fixedly installed on the top of the lower mounting plate, and the output shaft of the stepper motor is transmission connected to the rotating shaft.

[0013] Preferably, a connecting frame is provided on the lower mounting plate, a plurality of extrusion wheels are rotatably connected to the connecting frame, the extrusion wheels are supported at corresponding positions of the transmission toothed belt, a mounting base is fixedly installed in the lower mounting plate, a first telescopic rod and a second telescopic rod are fixedly installed on the top of the mounting base, the rods in the first telescopic rod and the second telescopic rod are fixedly installed on the bottom of the connecting frame, a positioning bolt is rotatably connected to the bottom of the mounting base, and the positioning bolt is rotatably connected to the rod in the second telescopic rod.

[0014] Preferably, a detachable end buckle is movably installed in the rectangular installation groove, a movable buckle is rotatably connected to the detachable end buckle, a fixing ring is provided in the structure composed of the detachable end buckle and the movable buckle, a magnetic block is provided between the detachable end buckle and the movable buckle for connection, a fixing bolt is threadedly connected to the detachable end buckle, a fixing ring is fixedly installed on the fixing bolt, and the fixing ring fits with the upper surface of the detachable end buckle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. According to the required infusion speed, adjust the distance between the upper mounting plate and the lower mounting plate to adjust the pressure of the squeeze cam on the infusion tube. After the distance between the upper mounting plate and the lower mounting plate is adjusted, the rotatable ferrule moves to the position of the hexagonal twisting ring, and the rotatable ferrule and the hexagonal twisting ring are docked to achieve the fixation of the rotatable ferrule on the hexagonal twisting ring. By adjusting the pressure of the squeeze cam on the infusion tube, the infusion speed can be finely adjusted. Different patients have different tolerances to the infusion speed. The cardiovascular system and body functions of children and the elderly are different from those of adults. Children have relatively weak heart function. Too fast an infusion speed may increase the burden on the heart and cause serious consequences such as heart failure. The blood vessels of the elderly have poor elasticity. Too fast an infusion speed may cause excessive local blood vessel pressure and leakage. The pressure of the squeeze cam can flexibly adjust the infusion speed according to the patient's age, physical condition and other factors. For children, a slower infusion speed can be set, while for adults with better physical fitness, the infusion speed can be appropriately accelerated when necessary.

[0017] 2. Replace the components on the upper mounting plate according to the size of the infusion tube. A groove corresponding to the size of the infusion tube is opened on the replaceable buckle to ensure the installation of the infusion tube. The replaceable pressure plate is pressed on the infusion tube. The replaceable pressure plate and the rectangular mounting groove form a surrounding structure corresponding to the infusion tube. According to the size of the infusion tube, install the detachable end buckle and the movable buckle of the corresponding size, and fix the installed infusion tube by screwing the fixing bolt. The two ends of the infusion tube are located in the structure composed of the movable buckle and the movable buckle. Infusion tubes of different sizes have different outer diameters and wall thicknesses. If the installation components cannot be effectively adjusted according to the size of the infusion tube, the infusion tube may become loose, displaced or even fall off during the infusion process. By adjusting the fixing effect of the installation components to make it closely fit the size of the infusion tube, this situation can be avoided, ensuring the stability of the infusion device during the entire infusion process and ensuring that the patient can receive infusion therapy safely and continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0020] Figure 3 It is a front view structural schematic diagram of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the corresponding position of the internal thread sleeve of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure at the corresponding position of the rotatable ferrule of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure at the corresponding position of the threaded belt of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the corresponding position of the liquid squeezing cam of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure at the corresponding position of the adjusting bolt of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the corresponding position of the second telescopic rod of the present invention.

[0027] Fig.10 It is a schematic diagram of the structure at the corresponding position of the replaceable pressing plate of the present invention.

[0028] Fig.11 It is a schematic diagram of the structure at the corresponding position of the rectangular insertion part of the present invention.

[0029] Fig.12 It is a structural schematic diagram of the corresponding position of the second adjusting bolt of the present invention.

[0030] Fig.13 It is a structural schematic diagram of the corresponding position of the magnetic block of the present invention.

[0031] Fig.14 It is a schematic diagram of the structure at the corresponding position of the fixing ring of the present invention.

[0032] In the figure: 1, upper mounting plate; 101, rectangular mounting groove; 2, lower mounting plate; 3, circular guide; 4, circular mounting seat; 5, inner movable column; 6, threaded belt; 7, limit ring; 8, hexagonal screw ring; 9, fixed seat; 10, swing plate; 11, T-shaped rod; 12, rectangular movable plate; 13, internal thread sleeve; 14, first adjusting bolt; 15, rotatable clamping sleeve; 16, positioning strip; 17, rectangular mounting buckle; 1701, insertion groove; 18, replaceable buckle; 19, rectangular insertion part; 20, second adjusting bolt; 21 , U-shaped mounting frame; 22, rotatable cover; 23, limit strip; 24, replaceable pressure plate; 25, third adjusting bolt; 26, shaft fixing seat; 27, rotating shaft; 28, squeezing cam; 29, transmission gear; 30, transmission toothed belt; 31, stepping motor; 32, connecting frame; 33, extrusion wheel; 34, mounting base; 35, first telescopic rod; 36, second telescopic rod; 37, adjusting bolt; 38, detachable end buckle; 39, movable buckle; 40, fixing ring; 41, magnetic block; 42, fixing bolt; 43, fixing ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all 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.

[0034] See also Figures 1 to 14The present invention provides a technical solution: an infusion pump that is easy to operate, comprising an upper mounting plate 1 and a lower mounting plate 2, a connecting structure is arranged between the upper mounting plate 1 and the lower mounting plate 2 to ensure that the upper mounting plate 1 and the lower mounting plate 2 are close to and away from each other, a circular guide 3 is arranged between the upper mounting plate 1 and the lower mounting plate 2 for connection, a circular mounting seat 4 is arranged on the top of the circular guide 3, a threaded hole is opened on the circular mounting seat 4, the circular guide 3 and the circular mounting seat 4 are installed on the bottom of the upper mounting plate 1 by bolts to ensure the installation of the circular guide 3 and the circular mounting seat 4, the circular guide 3 is fixedly installed at the corresponding position of the bottom of the upper mounting plate 1 through the circular mounting seat 4, and the upper surface of the lower mounting plate 2 is opened. A groove corresponding to the shape of the circular guide member 3 is provided. The design of the groove on the lower mounting plate 2 ensures that the circular guide member 3 can be telescoped in the lower mounting plate 2. An inner movable column 5 is rotatably connected in the circular guide member 3. A threaded belt 6 is fixedly installed on the outside of the inner movable column 5. The structure composed of the inner movable column 5 and the threaded belt 6 rotates in the circular guide member 3 to realize the lifting and lowering of the circular guide member 3 in the lower mounting plate 2, thereby realizing the adjustment of the distance between the upper mounting plate 1 and the lower mounting plate 2. A groove corresponding to the shape of the inner movable column 5 and the threaded belt 6 is provided in the circular guide member 3. A limiting ring 7 is fixedly installed on the outside of the inner movable column 5. The limiting ring 7 limits the rotation of the inner movable column 5 to ensure the stability of the inner movable column 5 during rotation. The limiting ring 7 is arranged at the corresponding positions at the bottom and top of the lower mounting plate 2 The rotation of the inner movable column 5 is limited to ensure the rotation stability of the inner movable column 5. A hexagonal screwing ring 8 is fixedly installed at the bottom end of the limiting ring 7. The shape of the hexagonal screwing ring 8 cooperates with the wrench to assist the rotation of the inner movable column 5. A fixed seat 9 is fixedly installed at the bottom of the lower mounting plate 2. A swing plate 10 is rotatably connected in the fixed seat 9. A T-shaped rod 11 is movably installed at one end of the swing plate 10 away from the fixed seat 9. A rectangular movable plate 12 is fixedly installed at the top of the T-shaped rod 11. An internal threaded sleeve 13 is also fixedly installed at one end of the swing plate 10 away from the fixed seat 9. A first adjusting bolt 14 is threadedly connected to the internal threaded sleeve 13. The top end of the first adjusting bolt 14 is rotatably connected to the rectangular movable plate 12. The end of the rectangular movable plate 12 away from the T-shaped rod 11 The rotatable connection is provided with a rotatable sleeve 15, which is movably mounted on the hexagonal screwing ring 8. The T-bar 11 is a T-shaped structure. Through the existence of the T-bar 11, the swing plate 10 and the rectangular movable plate 12 are assisted to approach each other. By rotating the first adjusting bolt 14, the distance between the swing plate 10 and the rectangular movable plate 12 is changed. The rotatable sleeve 15 is movably mounted on the hexagonal screwing ring 8. The rectangular movable plate 12 is pre-moved to a state perpendicular to the inner movable column 5, and then the distance between the swing plate 10 and the rectangular movable plate 12 is changed. The rotation of the rotatable sleeve 15 assists the docking of the rotatable sleeve 15 and the hexagonal screwing ring 8 to ensure the assembly of the rotatable sleeve 15 and the hexagonal screwing ring 8 to achieve the fixation of the inner movable column 5 after rotation.

[0035] The upper mounting plate 1 and the lower mounting plate 2 are arranged parallel to each other, and the upper mounting plate 1 and the lower mounting plate 2 cooperate with each other to ensure that the upper mounting plate 1 and the lower mounting plate 2 are adjusted close to each other.

[0036] The circular guide member 3 is provided with positioning strips 16 distributed in a circular array with the circular guide member 3 as the center of the array. The lower mounting plate 2 is provided with grooves corresponding to the shapes of the circular guide member 3 and the positioning strips 16. The circular guide member 3 is fixedly mounted with the positioning strips 16 to ensure the movement effect of the circular guide member 3 on the lower mounting plate 2.

[0037] The structure composed of the inner movable column 5 and the threaded belt 6 is loosely matched with the circular guide member 3. The structure composed of the inner movable column 5 and the threaded belt 6 can move with smaller resistance in the circular guide member 3 to reduce the resistance of the structure composed of the inner movable column 5 and the threaded belt 6 in the circular guide member 3.

[0038] The inner wall of the rotatable sleeve 15 and the outer wall of the hexagonal screwing ring 8 are both rounded to improve the docking convenience of the structure composed of the hexagonal screwing ring 8 and the rotatable sleeve 15 and reduce the friction force of the assembly of the hexagonal screwing ring 8 and the rotatable sleeve 15.

[0039] A rectangular mounting groove 101 is provided on the upper mounting plate 1, a group of rectangular mounting buckles 17 are fixedly installed on the rectangular mounting groove 101, an insertion groove 1701 is provided on the rectangular mounting buckle 17, a replaceable buckle 18 is movably installed in the rectangular mounting buckle 17, rectangular insertion parts 19 corresponding to the shape of the insertion groove 1701 are fixedly installed on both sides of the replaceable buckle 18, a second adjusting bolt 20 is movably installed on the replaceable buckle 18, the second adjusting bolt 20 is threadedly installed on the rectangular mounting buckle 17, a replaceable buckle 18 corresponding to the shape of the infusion tube is installed on the rectangular mounting buckle 17 as needed, the replaceable buckle 18 and the rectangular insertion part 19 form a structure that is engaged in the rectangular mounting buckle 17, the rectangular insertion part 19 and the insertion groove 1701 cooperate to ensure the assembly effect of the replaceable buckle 18 and the rectangular mounting buckle 17, and the replaceable buckle 18 is fixed to the rectangular mounting buckle 17 by turning the second adjusting bolt 20.

[0040] A U-shaped mounting frame 21 is fixedly installed on the top of the upper mounting plate 1, and a rotatable cover plate 22 is rotatably connected to the U-shaped mounting frame 21. A group of limiting strips 23 are fixedly installed on one side of the rotatable cover plate 22 corresponding to the upper mounting plate 1, and a replaceable pressure plate 24 is movably installed in the limiting strip 23. The replaceable pressure plate 24 is fixed to the rotatable cover plate 22 by a third adjusting bolt 25. The rotatable cover plate 22 is rotatably connected in the U-shaped mounting frame 21, and the positions of the replaceable pressure plate 24 and the upper mounting plate 1 correspond. The installation of the replaceable pressure plate 24 is guided by the limiting strip 23, and the installation of the replaceable pressure plate 24 is fixed by the third adjusting bolt 25. The thickness and shape of the replaceable pressure plate 24 can be adjusted to ensure the squeezing effect of the replaceable pressure plate 24 on the infusion tube.

[0041] A plurality of equally spaced shaft fixing seats 26 are fixedly mounted on the top of the lower mounting plate 2, a rotating shaft 27 is rotatably connected inside the shaft fixing seat 26, a liquid squeezing cam 28 is fixedly sleeved outside the rotating shaft 27, a transmission gear 29 is fixedly mounted outside the end of the rotating shaft 27, and the transmission gears 29 are transmission-connected via a transmission toothed belt 30, a stepper motor 31 is fixedly mounted on the top of the lower mounting plate 2, the output shaft of the stepper motor 31 is transmission-connected to the rotating shaft 27, the output shaft of the stepper motor 31 drives the rotating shaft 27 to rotate, thereby driving the corresponding liquid squeezing cam 28 to rotate, and the corresponding transmission toothed belt 30 is driven to rotate through the rotation of the rotating shaft 27 and the transmission gear 29, thereby realizing the driving of the rotation of the plurality of liquid squeezing cams 28, the liquid squeezing cam 28 is a cam, and the liquid in the infusion tube is squeezed and transported through the rotation of the plurality of liquid squeezing cams 28.

[0042] A connecting frame 32 is provided on the lower mounting plate 2, and a plurality of extrusion wheels 33 are rotatably connected to the connecting frame 32. The extrusion wheels 33 are supported at corresponding positions of the transmission toothed belt 30. A mounting base 34 is fixedly installed in the lower mounting plate 2, and a first telescopic rod 35 and a second telescopic rod 36 are fixedly installed on the top of the mounting base 34. The rods in the first telescopic rod 35 and the second telescopic rod 36 are fixedly installed at the bottom of the connecting frame 32, and an adjusting bolt 37 is rotatably connected to the bottom of the mounting base 34. The adjusting bolt 37 is rotatably connected to the rod in the second telescopic rod 36. The first telescopic rod 35 on both sides has a guiding effect. By rotating the adjusting bolt 37, the top of the adjusting bolt 37 applies pressure to the bottom of the rod in the second telescopic rod 36, so that the structure composed of the plurality of connecting frames 32 and the extrusion wheels 33 is supported. The extrusion wheels 33 support the transmission toothed belt 30 and apply pressure to the transmission toothed belt 30 to ensure the contact effect between the transmission toothed belt 30 and the transmission gear 29.

[0043] A detachable end buckle 38 is movably installed in the rectangular installation groove 101, and an active buckle 39 is rotatably connected to the detachable end buckle 38. A fixing ring 40 is arranged in the structure composed of the detachable end buckle 38 and the active buckle 39. A magnetic block 41 is arranged between the detachable end buckle 38 and the active buckle 39 for connection. A fixing bolt 42 is threadedly connected to the detachable end buckle 38, and a fixing ring 43 is fixedly installed on the fixing bolt 42. The fixing ring 43 fits the upper surface of the detachable end buckle 38. The structure composed of the detachable end buckle 38 and the active buckle 39 can be selected to be replaced, and the detachable end buckle 38 is fixed by twisting the fixing bolt 42 and the fixing ring 43. The structure composed of the active buckle 39 and the fixing ring 40 is located outside the infusion tube. The structure composed of the active buckle 39 and the fixing ring 40 is located at both ends of the infusion tube to fix the infusion tube, and the movable buckle 39 and the fixing ring 40 are fixed by the magnetic block 41.

[0044] Working principle:

[0045] Step 1: Replace the components on the upper mounting plate 1 according to the size of the infusion tube. The replaceable buckle 18 and the rectangular insert portion 19 can be replaced on the rectangular mounting buckle 17. The rectangular insert portion 19 is movably engaged in the insertion slot 1701. A slot corresponding to the size of the infusion tube is provided on the replaceable buckle 18 to ensure the installation of the infusion tube. After the replaceable buckle 18 is installed, the replaceable buckle 18 is fixed by turning the second adjusting bolt 20. The replaceable pressing plate 24 can be installed between the limit strips 23 as needed, and can be fixed by turning the third adjusting bolt 20. The joint bolt 25 fixes the replaceable pressure plate 24, and the replaceable pressure plate 24 is pressed on the top of the infusion tube. The replaceable pressure plate 24 and the rectangular mounting groove 101 form a surrounding structure corresponding to the infusion tube. According to the size of the infusion tube, the detachable end buckle 38 and the movable buckle 39 of the corresponding size are installed, and the installed infusion tube is fixed by screwing the fixing bolt 42. The two ends of the infusion tube are located in the structure composed of the movable buckle 39 and the movable buckle 39 to ensure the fixing effect of the infusion tube. The fixing ring 40 applies pressure to the two ends of the infusion tube to ensure that the infusion tube is fixed while infusing.

[0046] Step 2: By turning the adjusting bolt 37, the adjusting bolt 37 applies pressure to the rod inside the second telescopic rod 36. After the rod inside the second telescopic rod 36 is pressed, the structure composed of the connecting frame 32 and the extruding wheel 33 moves upward, and the extruding wheel 33 is supported at the corresponding position outside the transmission toothed belt 30. The tightened transmission toothed belt 30 better surrounds the transmission gear 29. The rotating shaft 27 is driven to rotate by the stepping motor 31. When the rotating shaft 27 rotates, the transmission toothed belt 30 is driven to rotate, thereby driving the multiple squeezing cams 28 and the structure composed of the stepping motor 31 to rotate together, so as to realize the synchronous rotation of the multiple squeezing cams 28. Through the rotation of the squeezing cam 28, the liquid in the infusion tube is squeezed and moved to realize the delivery of the liquid medicine.

[0047] Step 3: According to the required infusion speed, the distance between the upper mounting plate 1 and the lower mounting plate 2 is adjusted to adjust the pressure of the squeezing cam 28 on the infusion tube, and the lower mounting plate 2 is pressed. The lower mounting plate 2 and the upper mounting plate 1 are mutually pressed. At the same time, the structure composed of the inner movable column 5 and the threaded belt 6 will rotate in the circular guide 3. After the inner movable column 5 and the threaded belt 6 rotate, the rotation of the inner movable column 5 and the threaded belt 6 is limited by the limiting ring 7 to ensure the stability of the rotation of the inner movable column 5 and the threaded belt 6. After the distance adjustment between the upper mounting plate 1 and the lower mounting plate 2 is completed , it is necessary to fix the hexagonal screwing ring 8 to prevent the hexagonal screwing ring 8 from continuing to rotate, rotate the swing plate 10 and the rectangular movable plate 12, and after the swing plate 10 and the rectangular movable plate 12 are rotated, the rotatable sleeve 15 moves to the position of the hexagonal screwing ring 8, and the rotation of the rotatable sleeve 15 in the rectangular movable plate 12 assists the docking of the rotatable sleeve 15 and the hexagonal screwing ring 8, and the relative distance between the rectangular movable plate 12 and the swing plate 10 is changed by twisting the first adjusting bolt 14, so as to achieve the fixation of the rotatable sleeve 15 on the hexagonal screwing ring 8.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infusion pump that is easy to operate, characterized in that: The invention comprises an upper mounting plate (1) and a lower mounting plate (2), wherein a circular guide member (3) is arranged between the upper mounting plate (1) and the lower mounting plate (2) for connection, a circular mounting seat (4) is arranged on the top of the circular guide member (3), and the circular guide member (3) is fixedly mounted at a corresponding position on the bottom of the upper mounting plate (1) through the circular mounting seat (4), and a groove corresponding to the shape of the circular guide member (3) is opened on the upper surface of the lower mounting plate (2), an inner movable column (5) is rotatably connected inside the circular guide member (3), and a threaded belt (6) is fixedly installed outside the inner movable column (5), and a groove corresponding to the shape of the inner movable column (5) and the threaded belt (6) is arranged inside the circular guide member (3), and a limiting ring (7) is fixedly installed outside the inner movable column (5), and the limiting ring (7) is arranged at corresponding positions on the bottom and top of the lower mounting plate (2), and the A hexagonal screwing ring (8) is fixedly installed at the bottom end of the limiting ring (7); a fixing seat (9) is fixedly installed at the bottom of the lower mounting plate (2); a swing plate (10) is rotatably connected inside the fixing seat (9); a T-shaped rod (11) is movably installed at one end of the swing plate (10) away from the fixing seat (9); a rectangular movable plate (12) is fixedly installed at the top end of the T-shaped rod (11); an internal threaded sleeve (13) is also fixedly installed at one end of the swing plate (10) away from the fixing seat (9); a first adjusting bolt (14) is threadedly connected to the internal threaded sleeve (13); the top end of the first adjusting bolt (14) is rotatably connected to the rectangular movable plate (12); one end of the rectangular movable plate (12) away from the T-shaped rod (11) is rotatably connected to a rotatable sleeve (15); the rotatable sleeve (15) is movably sleeved on the hexagonal screwing ring (8).

2. A simple and easy-to-operate infusion pump according to claim 1, characterized in that: The upper mounting plate (1) and the lower mounting plate (2) are arranged parallel to each other.

3. A simple and easy-to-operate infusion pump according to claim 2, characterized in that: The circular guide member (3) is provided with positioning strips (16) distributed in a circular array with the circular guide member (3) as the center of the array, and the lower mounting plate (2) is provided with grooves corresponding to the shapes of the circular guide member (3) and the positioning strips (16).

4. The easy-to-operate infusion pump according to claim 3, characterized in that: The structure composed of the inner movable column (5) and the threaded belt (6) is clearance-matched with the circular guide piece (3).

5. The easy-to-operate infusion pump according to claim 4, characterized in that: The inner wall of the rotatable clamping sleeve (15) and the outer wall of the hexagonal screwing ring (8) are both rounded.

6. The easy-to-operate infusion pump according to claim 5, characterized in that: The upper mounting plate (1) is provided with a rectangular mounting groove (101), a group of rectangular mounting buckles (17) are fixedly mounted on the rectangular mounting groove (101), an insertion groove (1701) is provided on the rectangular mounting buckle (17), a replaceable buckle (18) is movably mounted in the rectangular mounting buckle (17), rectangular insertion portions (19) corresponding to the shape of the insertion groove (1701) are fixedly mounted on both sides of the replaceable buckle (18), a second adjusting bolt (20) is movably mounted on the replaceable buckle (18), and the second adjusting bolt (20) is threadedly mounted on the rectangular mounting buckle (17).

7. The easy-to-operate infusion pump according to claim 6, characterized in that: A U-shaped mounting frame (21) is fixedly mounted on the top of the upper mounting plate (1), and a rotatable cover plate (22) is rotatably connected to the U-shaped mounting frame (21). A set of limiting strips (23) is fixedly mounted on one side of the rotatable cover plate (22) corresponding to the upper mounting plate (1), and a replaceable pressure plate (24) is movably mounted in the limiting strips (23). The replaceable pressure plate (24) is fixed to the rotatable cover plate (22) via a third adjusting bolt (25).

8. The easy-to-operate infusion pump according to claim 7, characterized in that: A plurality of equally spaced shaft fixing seats (26) are fixedly mounted on the top of the lower mounting plate (2), a rotating shaft (27) is rotatably connected inside the shaft fixing seat (26), a liquid squeezing cam (28) is fixedly sleeved outside the rotating shaft (27), a transmission gear (29) is fixedly mounted outside the end of the rotating shaft (27), the transmission gears (29) are transmission-connected via a transmission toothed belt (30), a stepping motor (31) is fixedly mounted on the top of the lower mounting plate (2), and an output shaft of the stepping motor (31) is transmission-connected to the rotating shaft (27).

9. The easy-to-operate infusion pump according to claim 8, characterized in that: The lower mounting plate (2) is provided with a connecting frame (32), and a plurality of extrusion wheels (33) are rotatably connected to the connecting frame (32), and the extrusion wheels (33) are supported at corresponding positions of the transmission toothed belt (30). A mounting base (34) is fixedly installed in the lower mounting plate (2), and a first telescopic rod (35) and a second telescopic rod (36) are fixedly installed on the top of the mounting base (34), and the rods in the first telescopic rod (35) and the second telescopic rod (36) are fixedly installed at the bottom of the connecting frame (32), and an adjusting bolt (37) is rotatably connected to the bottom of the mounting base (34), and the adjusting bolt (37) is rotatably connected to the rod in the second telescopic rod (36).

10. The easy-to-operate infusion pump according to claim 9, characterized in that: A detachable end buckle (38) is movably installed in the rectangular installation groove (101), and a movable buckle (39) is rotatably connected to the detachable end buckle (38). A fixing ring (40) is provided in the structure composed of the detachable end buckle (38) and the movable buckle (39). A magnetic block (41) is provided between the detachable end buckle (38) and the movable buckle (39) for connection. A fixing bolt (42) is threadedly connected to the detachable end buckle (38), and a fixing ring (43) is fixedly installed on the fixing bolt (42). The fixing ring (43) is in contact with the upper surface of the detachable end buckle (38).

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