An infusion pump

Abstract

This invention relates to the field of liquid delivery tools, specifically a simple and easy-to-operate infusion pump, including an upper mounting plate and a lower mounting plate, connected by a circular guide member. A circular mounting seat is located on the top of the circular guide member. Different patients have different tolerances to infusion rates, and the cardiovascular systems and physical functions of children and the elderly differ from those of adults. Children's heart function is relatively weak, and excessively fast infusion rates may increase the burden on the heart, leading to serious consequences such as heart failure. The blood vessels of the elderly have poor elasticity, and excessively fast infusion rates may cause excessively high local vascular pressure, resulting in leakage. Adjusting the pressure of the squeezing cam can flexibly adjust the infusion rate according to the patient's age, physical condition, and other factors. A slower infusion rate can be set for children, while for adults with better physical condition, the infusion rate can be appropriately increased if necessary.

Description

Technical Field

[0001] This invention relates to the field of liquid delivery tools, specifically an infusion pump. Background Technology

[0002] An infusion pump is a medical device that can precisely control the infusion rate and volume. It uses a mechanical device or electronic drive system to squeeze or push the infusion tubing, thereby allowing the fluid to enter the patient's body at a stable flow rate. Its core principle is to use an electric 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 rate of a conventional infusion pump is achieved by adjusting the rotation speed of the motor output shaft. However, controlling the infusion rate by adjusting the motor output shaft speed can lead to significant variations in the infusion rate. Compared to adjusting the squeezing effect of the rollers on the infusion tubing, this method may have lower precision. In some scenarios requiring high-precision infusion, the infusion rate may need to be accurate to 0.1-0.5 mL / h. It is difficult to achieve such precision by adjusting the motor output shaft speed, and speed errors may affect the treatment effect. Summary of the Invention

[0004] The purpose of this invention is to provide an infusion pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an infusion pump, comprising an upper mounting plate and a lower mounting plate, wherein a circular guide member is provided between the upper and lower mounting plates for connection, a circular mounting seat is provided on the top of the circular guide member, and the circular guide member is fixedly mounted at a corresponding position on the bottom of the upper mounting plate via the circular mounting seat; a groove corresponding to the shape of the circular guide member is formed on the upper surface of the lower mounting plate; an inner movable column is rotatably connected inside the circular guide member; a threaded band is fixedly mounted outside the inner movable column; a groove corresponding to the shape of the inner movable column and the threaded band is provided inside the circular guide member; a limit ring is fixedly mounted outside the inner movable column; the limit ring is provided with... The corresponding positions at the bottom and top of the lower mounting plate are provided. A hexagonal rotating ring is fixedly installed at the bottom end of the limiting ring. A fixed base is fixedly installed at the bottom of the lower mounting plate. A swing plate is rotatably connected inside the fixed base. A T-shaped rod is movably installed at the end of the swing plate away from the fixed base. A rectangular movable plate is fixedly installed at the top end of the T-shaped rod. An internal threaded sleeve is also fixedly installed at the end of the swing plate away from the fixed base. A first adjusting bolt is threadedly connected to the internal threaded sleeve. The top end of the first adjusting bolt is rotatably connected to the rectangular movable plate. A rotatable sleeve is rotatably connected to the end of the rectangular movable plate away from the T-shaped rod. The rotatable sleeve is movably fitted onto the hexagonal rotating ring.

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

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

[0008] Preferably, the structure consisting of the inner movable column and the threaded band is clearance-fitted with the circular guide.

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

[0010] Preferably, the upper mounting plate has a rectangular mounting groove, a set of rectangular mounting buckles are fixedly installed on the rectangular mounting groove, the rectangular mounting buckles have an insertion groove, a replaceable buckle is movably installed inside 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, and a second adjusting bolt is movably installed on the replaceable buckle, the second adjusting bolt being threaded onto the rectangular mounting buckle.

[0011] Preferably, a U-shaped mounting bracket is fixedly installed on the top of the upper mounting plate, and a rotatable cover plate is rotatably connected to the U-shaped mounting bracket. A set of limiting strips is fixedly installed on one side of the rotatable cover plate corresponding to the upper mounting plate. A replaceable pressure plate is movably installed inside the limiting strips, and the replaceable pressure plate is fixed to the rotatable cover plate by a third adjusting bolt.

[0012] Preferably, a plurality of equidistant 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 squeezing cam is fixedly sleeved on the outside of the rotating shaft. A transmission gear is fixedly installed on the end of the rotating shaft. The transmission gears are connected to each other by a transmission belt. A stepper motor is fixedly installed on the top of the lower mounting plate. The output shaft of the stepper motor is connected to the rotating shaft.

[0013] Preferably, a connecting frame is provided on the lower mounting plate, and multiple extrusion rollers are rotatably connected to the connecting frame. The extrusion rollers are supported at corresponding positions on the transmission toothed belt. A mounting base is fixedly installed inside 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 inside the first telescopic rod and the second telescopic rod are fixedly installed at the bottom of the connecting frame. An adjusting bolt is rotatably connected to the bottom of the mounting base, and the adjusting bolt is rotatably connected to the rod inside the second telescopic rod.

[0014] Preferably, a detachable end buckle is movably installed in the rectangular mounting groove, and 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 threaded to the detachable end buckle, and a fixing ring is fixedly installed on the fixing bolt. The fixing ring fits against the upper surface of the detachable end buckle.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Adjust the distance between the upper and lower mounting plates according to the required infusion rate to regulate the pressure applied to the infusion tubing by the squeezing cam. After adjusting the distance, move the rotatable sleeve to the position of the hexagonal rotating ring. Align the rotatable sleeve with the hexagonal rotating ring to secure it. By adjusting the pressure applied to the infusion tubing by the squeezing cam, the infusion rate can be finely adjusted. Different patients have different tolerances to infusion rates. Children and the elderly have different cardiovascular systems and physical functions compared to adults. Children's heart function is relatively weak; excessively fast infusion rates may increase the burden on the heart and lead to serious consequences such as heart failure. The elderly have poor vascular elasticity; excessively fast infusion rates may cause excessively high local vascular pressure and leakage. Adjusting the pressure applied by the squeezing cam allows for flexible adjustment of the infusion rate based on the patient's age and physical condition. A slower infusion rate can be set for children, while for adults in good physical condition, the infusion rate can be appropriately increased if necessary.

[0017] 2. Replace the components on the upper mounting plate according to the size of the infusion tubing. The replaceable clips have grooves corresponding to the size of the infusion tubing to ensure proper installation. The replaceable pressure plate presses down on the infusion tubing. The replaceable pressure plate and the rectangular mounting groove form a surrounding structure for the corresponding infusion tubing. Install the corresponding detachable end clips and movable clips according to the size of the infusion tubing, and fix the installed infusion tubing by tightening the fixing bolts. Both ends of the infusion tubing are located within the structure formed by the movable clips. Infusion tubing of different sizes has different outer diameters and wall thicknesses. If the mounting components cannot be effectively adjusted according to the size of the infusion tubing, the infusion tubing may loosen, shift, or even fall off during infusion. By adjusting the fixing effect of the mounting components to ensure a tight fit with the size of the infusion tubing, this situation can be avoided, ensuring the stability of the infusion device throughout the infusion process and ensuring that the patient can safely and continuously receive infusion treatment. Attached Figure Description

[0018] Figure 1 This is a side view of the structure of the present invention.

[0019] Figure 2 This is a top view of the structure of the present invention.

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

[0021] Figure 4 This is a schematic diagram of the structure at the corresponding position of the internal threaded sleeve of the present invention.

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

[0023] Figure 6 This is a schematic diagram of the structure at the corresponding position of the threaded band in this invention.

[0024] Figure 7 This is a schematic diagram of the structure at the corresponding position of the squeezing cam in this invention.

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

[0026] Figure 9 This is a schematic diagram of the structure at the corresponding position of the second telescopic rod of the present invention.

[0027] Figure 10 This is a schematic diagram of the structure at the corresponding position of the replaceable pressure plate of the present invention.

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

[0029] Figure 12 This is a schematic diagram of the structure at the corresponding position of the second adjusting bolt of the present invention.

[0030] Figure 13 This is a schematic diagram of the structure at the corresponding position of the magnetic block in this invention.

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

[0032] In the diagram: 1. Upper mounting plate; 101. Rectangular mounting slot; 2. Lower mounting plate; 3. Circular guide; 4. Circular mounting base; 5. Inner movable column; 6. Threaded band; 7. Limiting ring; 8. Hexagonal turning ring; 9. Fixed base; 10. Swing plate; 11. T-shaped rod; 12. Rectangular movable plate; 13. Inner threaded sleeve; 14. First adjusting bolt; 15. Rotatable sleeve; 16. Positioning strip; 17. Rectangular mounting buckle; 1701. Insertion slot; 18. Replaceable buckle; 19. Rectangular insertion part; 20. Second adjusting bolt; 21. 22. U-shaped mounting bracket; 23. Rotatable cover plate; 24. Limiting strip; 25. Replaceable pressure plate; 26. Third adjusting bolt; 27. Shaft fixing seat; 28. Rotating shaft; 29. ​​Squeezing cam; 30. Transmission gear; 31. Transmission toothed belt; 32. Stepper motor; 33. Connecting frame; 34. Extrusion wheel; 35. Mounting base; 36. First telescopic rod; 37. Second telescopic rod; 38. Adjusting bolt; 39. Detachable end buckle; 40. Movable buckle; 41. Fixing ring one; 42. Magnetic block; 43. Fixing bolt; 44. Fixing ring two. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] Please see Figures 1 to 14This invention provides a technical solution: an infusion pump, including an upper mounting plate 1 and a lower mounting plate 2. A connecting structure is provided between the upper mounting plate 1 and the lower mounting plate 2 to ensure that the structures composed of the upper mounting plate 1 and the lower mounting plate 2 are close to each other and far apart. A circular guide member 3 is provided between the upper mounting plate 1 and the lower mounting plate 2 for connection. A circular mounting seat 4 is provided on the top of the circular guide member 3. The circular mounting seat 4 has a threaded hole. The structure composed of the circular guide member 3 and the circular mounting seat 4 is installed on the bottom of the upper mounting plate 1 by bolts to ensure the installation of the structure composed of the circular guide member 3 and the circular mounting seat 4. The circular guide member 3 is fixedly installed at the corresponding position on the bottom of the upper mounting plate 1 by the circular mounting seat 4. A corresponding circular guide member 3 is provided on the upper surface of the lower mounting plate 2. The circular guide 3 has a groove in its shape. Through the design of the groove on the lower mounting plate 2, the circular guide 3 can extend and retract within the lower mounting plate 2. An inner movable column 5 is rotatably connected inside the circular guide 3. A threaded band 6 is fixedly installed outside the inner movable column 5. The structure consisting of the inner movable column 5 and the threaded band 6 rotates within the circular guide 3, enabling the circular guide 3 to rise and fall within the lower mounting plate 2, thereby adjusting the distance between the upper mounting plate 1 and the lower mounting plate 2. The circular guide 3 has grooves corresponding to the shapes of the inner movable column 5 and the threaded band 6. A limit ring 7 is fixedly installed outside the inner movable column 5. The limit ring 7 limits the rotation of the inner movable column 5 to ensure stability during rotation. The limit ring 7 is located at 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 its rotational stability. A hexagonal turning ring 8 is fixedly installed at the bottom end of the limiting ring 7. The shape of the hexagonal turning ring 8 matches 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 inside the fixed seat 9. A T-shaped rod 11 is movably installed at the 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 the 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 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 rotates. A rotatable sleeve 15 is connected and movably fitted onto the hexagonal rotating ring 8. The T-shaped rod 11 has a T-shaped structure. The presence of the T-shaped rod 11 assists in bringing the swing plate 10 and the rectangular movable plate 12 closer to 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 fitted onto the hexagonal rotating ring 8. The rectangular movable plate 12 is pre-moved to a state perpendicular to the inner movable column 5. Then, the distance between the swing plate 10 and the rectangular movable plate 12 is changed. The rotation of the rotatable sleeve 15 assists in the docking of the rotatable sleeve 15 and the hexagonal rotating ring 8, ensuring the assembly of the rotatable sleeve 15 and the hexagonal rotating ring 8, thereby achieving 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. The cooperation between the upper mounting plate 1 and the lower mounting plate 2 ensures that the upper mounting plate 1 and the lower mounting plate 2 can be adjusted to be close to each other.

[0036] The circular guide 3 is provided with positioning strips 16 arranged in a ring array with the circular guide 3 as the array center. The lower mounting plate 2 is provided with grooves corresponding to the shape of the circular guide 3 and the positioning strips 16. The positioning strips 16 are fixedly installed on the circular guide 3 to ensure the movement effect of the circular guide 3 on the lower mounting plate 2.

[0037] The structure consisting of the inner movable column 5 and the threaded band 6 is clearance-fitted with the circular guide 3. The structure consisting of the inner movable column 5 and the threaded band 6 can move within the circular guide 3 with less resistance, thereby reducing the resistance of the structure consisting of the inner movable column 5 and the threaded band 6 within the circular guide 3.

[0038] The inner wall of the rotatable sleeve 15 and the outer wall of the hexagonal rotating ring 8 are both rounded to improve the ease of docking of the structure composed of the hexagonal rotating ring 8 and the rotatable sleeve 15, and to reduce the frictional force during assembly of the hexagonal rotating ring 8 and the rotatable sleeve 15.

[0039] A rectangular mounting groove 101 is provided on the upper mounting plate 1. A set 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 inside the rectangular mounting buckle 17. Rectangular insertion parts 19 of the corresponding 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 threaded on the rectangular mounting buckle 17. Replaceable buckles 18 of the corresponding shape of infusion tubes are installed on the rectangular mounting buckle 17 as needed. The replaceable buckle 18 and the rectangular insertion parts 19 form a structure that engages in the rectangular mounting buckle 17. The assembly effect of the replaceable buckle 18 and the rectangular mounting buckle 17 is ensured by the cooperation of the rectangular insertion parts 19 and the insertion groove 1701. The replaceable buckle 18 is fixed on the rectangular mounting buckle 17 by turning the second adjusting bolt 20.

[0040] A U-shaped mounting bracket 21 is fixedly installed on the top of the upper mounting plate 1. A rotatable cover plate 22 is rotatably connected to the U-shaped mounting bracket 21. A set of limiting strips 23 is fixedly installed on one side of the rotatable cover plate 22 corresponding to the upper mounting plate 1. A replaceable pressure plate 24 is movably installed inside the limiting strips 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 inside the U-shaped mounting bracket 21. The position of the replaceable pressure plate 24 corresponds to that of the upper mounting plate 1. The installation of the replaceable pressure plate 24 is guided by the limiting strips 23 and 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] Multiple sets of equidistantly spaced shaft fixing seats 26 are fixedly installed on the top of the lower mounting plate 2. A rotating shaft 27 is rotatably connected inside the shaft fixing seat 26. A squeezing cam 28 is fixedly sleeved on the outside of the rotating shaft 27. A transmission gear 29 is fixedly installed on the end of the rotating shaft 27. The transmission gears 29 are connected to each other by a transmission toothed belt 30. A stepper motor 31 is fixedly installed on the top of the lower mounting plate 2. The output shaft of the stepper motor 31 is 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 squeezing cam 28 to rotate. Through the rotation of the rotating shaft 27 and the transmission gear 29, the corresponding transmission toothed belt 30 is driven to rotate, thereby realizing the rotation of multiple squeezing cams 28. The squeezing cam 28 is a cam. The rotation of multiple squeezing cams 28 squeezes and delivers the liquid in the infusion tube.

[0042] A connecting frame 32 is provided on the lower mounting plate 2. Multiple extrusion rollers 33 are rotatably connected to the connecting frame 32. The extrusion rollers 33 are supported at corresponding positions of the transmission toothed belt 30. A mounting base 34 is fixedly installed inside the lower mounting plate 2. A first telescopic rod 35 and a second telescopic rod 36 are fixedly installed on the top of the mounting base 34. The rods inside the first telescopic rod 35 and the second telescopic rod 36 are fixedly installed at the bottom of the connecting frame 32. An adjusting bolt 37 is rotatably connected to the bottom of the second telescopic rod 36. The first telescopic rods 35 on both sides serve as guides. By rotating the adjusting bolt 37, the top of the adjusting bolt 37 applies pressure to the bottom of the rod inside the second telescopic rod 36, thus supporting the structure composed of multiple connecting frames 32 and extrusion rollers 33. The extrusion rollers 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 mounting slot 101. A movable buckle 39 is rotatably connected to the detachable end buckle 38. Both the detachable end buckle 38 and the movable buckle 39 are equipped with a fixing ring 40. 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. A fixing ring 43 is fixedly installed on the fixing bolt 42. The fixing ring 43 fits against the upper surface of the detachable end buckle 38. The structure of the detachable end buckle 38 and the movable buckle 39 can be replaced. The detachable end buckle 38 is fixed by turning the fixing bolt 42 and the fixing ring 43. The structure of the movable buckle 39 and the fixing ring 40 is located outside the infusion tube. The structure of the movable buckle 39 and the fixing ring 40 is located at both ends of the infusion tube to fix the infusion tube. 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 clip 18 and the rectangular insertion part 19 can be replaced on the rectangular mounting clip 17. The rectangular insertion part 19 is movably engaged in the insertion slot 1701. The replaceable clip 18 has a slot corresponding to the size of the infusion tube to ensure the installation of the infusion tube. After the replaceable clip 18 is installed, it is fixed by turning the second adjusting bolt 20. The replaceable pressure plate 24 can be installed between the limit strips 23 as needed, and is fixed by turning the third adjusting bolt. The replaceable pressure plate 24 is fixed by the bolt 25. The replaceable pressure plate 24 presses on the infusion tube. The replaceable pressure plate 24 and the rectangular mounting groove 101 form a surrounding structure for the corresponding infusion tube. According to the size of the infusion tube, the corresponding detachable end clips 38 and movable clips 39 are installed. The installed infusion tube is fixed by turning the fixing bolt 42. The two ends of the infusion tube are located within the structure formed by the movable clips 39 and the movable clips 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 infusion is being administered.

[0046] Step 2: By tightening the adjusting bolt 37, pressure is applied to the rod inside the second telescopic rod 36. After the rod inside the second telescopic rod 36 is pressed, the structure consisting of the connecting frame 32 and the squeezing wheel 33 moves upward. The squeezing 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 stepper motor 31. When the rotating shaft 27 rotates, it drives the transmission toothed belt 30 to rotate as well, thereby driving the structure consisting of multiple squeezing cams 28 and the stepper motor 31 to rotate together, so as to realize the synchronous rotation of multiple squeezing cams 28. Through the rotation of the squeezing cams 28, the liquid in the infusion tube is squeezed and moved to realize the delivery of the medicine.

[0047] Step 3: Adjust the distance between the upper mounting plate 1 and the lower mounting plate 2 according to the required infusion rate to adjust the pressure applied to the infusion tube by the squeezing cam 28. Pressure is applied to the lower mounting plate 2, causing the lower mounting plate 2 and the upper mounting plate 1 to press against each other. Simultaneously, the structure consisting of the inner movable column 5 and the threaded band 6 will rotate within the circular guide 3. After the inner movable column 5 and the threaded band 6 rotate, the rotation is limited by the limiting ring 7 to ensure the stability of the rotation of the inner movable column 5 and the threaded band 6. After the distance between the upper mounting plate 1 and the lower mounting plate 2 is adjusted... The hexagonal rotating ring 8 needs to be fixed to prevent it from continuing to rotate. Rotate the swing plate 10 and the rectangular movable plate 12. After the swing plate 10 and the rectangular movable plate 12 have rotated, the rotatable sleeve 15 moves to the position of the hexagonal rotating ring 8. The rotation of the rotatable sleeve 15 within the rectangular movable plate 12 assists in the docking of the rotatable sleeve 15 and the hexagonal rotating ring 8. By turning the first adjusting bolt 14, the relative distance between the rectangular movable plate 12 and the swing plate 10 is changed, thus fixing the rotatable sleeve 15 on the hexagonal rotating ring 8.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An infusion pump, characterized by: The utility model provides a kind of installation plate, including upper mounting plate (1) and lower mounting plate (2), circular guide (3) is arranged between the upper mounting plate (1) and lower mounting plate (2) and is connected, the top of the circular guide (3) is provided with circular mounting seat (4), the circular guide (3) is fixedly installed at the bottom of the upper mounting plate (1) corresponding position by circular mounting seat (4), the upper surface of the lower mounting plate (2) is opened with the slot corresponding to the shape of circular guide (3), the inner movable column (5) is rotatably connected in the circular guide (3), the outer fixedly installed with thread belt (6) of the inner movable column (5), the circular guide (3) is provided with the slot corresponding to the shape of inner movable column (5) and thread belt (6), the outer fixedly installed with limit ring (7) of the inner movable column (5), the limit ring (7) is arranged at the corresponding position of the bottom and top of lower mounting plate (2), the bottom end of the limit ring (7) is fixedly installed with hexagonal screw ring (8), the bottom of the lower mounting plate (2) is fixedly installed with fixed seat (9), the fixed seat (9) is rotatably connected with swing plate (10), the end away from fixed seat (9) of the swing plate (10) is movably installed with T-shaped rod (11), the top end of the T-shaped rod (11) is fixedly installed with rectangular movable plate (12), the end away from fixed seat (9) of the swing plate (10) is also fixedly installed with internal thread sleeve (13), the first adjusting bolt (14) is threadedly connected on the internal thread sleeve (13), the top end of the first adjusting bolt (14) is rotatably connected with rectangular movable plate (12), the end away from T-shaped rod (11) of the rectangular movable plate (12) is rotatably connected with rotatable sleeve (15), the rotatable sleeve (15) is movably sleeved on hexagonal screw ring (8); The top of the lower mounting plate (2) is fixedly installed with a plurality of equidistantly arranged shaft fixing seats (26), a rotating shaft (27) is rotatably connected in the shaft fixing seat (26), the outer fixed sleeve of the rotating shaft (27) is provided with extrusion cam (28), the outer fixed installation of the end of the rotating shaft (27) is provided with transmission gear (29), the transmission gear (29) is drivenly connected by transmission toothed belt (30), the top of the lower mounting plate (2) is fixedly installed with step motor (31), the output shaft of the step motor (31) is drivingly connected with rotating shaft (27); The lower mounting plate (2) is provided with connecting frame (32), a plurality of extrusion wheels (33) are rotatably connected on the connecting frame (32), the extrusion wheel (33) is supported at the corresponding position of transmission toothed belt (30), the lower mounting plate (2) is fixedly installed with mounting base frame (34), the first telescopic rod (35) and the second telescopic rod (36) are fixedly installed on the top of the mounting base frame (34), the rod in the first telescopic rod (35) and the second telescopic rod (36) is fixedly installed at the bottom of connecting frame (32), the bottom of the mounting base frame (34) is rotatably connected with the adjusting bolt (37), the rod in the second telescopic rod (36) is rotatably connected with the adjusting bolt (37).

2. The infusion pump of claim 1, wherein: The upper mounting plate (1) and the lower mounting plate (2) are arranged in parallel with each other.

3. The infusion pump of claim 2, wherein: The circular guide (3) is provided with positioning strips (16) arranged in a ring array with the circular guide (3) as the center, and the lower mounting plate (2) is provided with grooves corresponding in shape to the circular guide (3) and the positioning strips (16).

4. The infusion pump of claim 3, wherein: The inner movable column (5) and the threaded belt (6) are in clearance fit with the circular guide (3).

5. The infusion pump of claim 4, wherein: The inner wall of the rotatable sleeve (15) and the outer wall of the hexagonal screw ring (8) are both rounded.

6. The infusion pump of claim 5, wherein: The upper mounting plate (1) is provided with a rectangular mounting groove (101), a group of rectangular mounting buckles (17) are fixedly installed on the rectangular mounting groove (101), the rectangular mounting buckles (17) are provided with insertion grooves (1701), replaceable buckles (18) are movably installed in the rectangular mounting buckles (17), the replaceable buckles (18) are fixedly provided with rectangular insertion portions (19) corresponding in shape to the insertion grooves (1701) on both sides, second adjusting bolts (20) are movably installed on the replaceable buckles (18), and the second adjusting bolts (20) are threadedly installed on the rectangular mounting buckles (17).

7. The infusion pump of claim 6, wherein: A U-shaped mounting rack (21) is fixedly installed on the top of the upper mounting plate (1), a rotatable cover plate (22) is rotatably connected to the U-shaped mounting rack (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), replaceable pressing plates (24) are movably installed in the limiting strips (23), and the replaceable pressing plates (24) are fixed to the rotatable cover plate (22) through third adjusting bolts (25).

8. The infusion pump of claim 7, wherein: A detachable end buckle (38) is movably installed in the rectangular mounting groove (101), a movable buckle (39) is rotatably connected to the detachable end buckle (38), fixed rings one (40) are arranged in the structures of the detachable end buckle (38) and the movable buckle (39), magnetic blocks (41) are arranged between the detachable end buckle (38) and the movable buckle (39) to connect them, fixed bolts (42) are threadedly connected to the detachable end buckle (38), fixed rings two (43) are fixedly installed on the fixed bolts (42), and the fixed rings two (43) are attached to the upper surface of the detachable end buckle (38).

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