An infusion pump

Abstract

The application discloses an infusion pump, which comprises a base, a cover plate, a peristaltic mechanism, an automatic compensation mechanism and an infusion hose. A pipeline channel is formed in the base, and the infusion hose is arranged in the pipeline channel. The cover plate is arranged on the base. The peristaltic mechanism is installed on the base and located at one side of the pipeline channel, and the automatic compensation mechanism is installed on the cover plate. The peristaltic mechanism comprises a peristaltic rotating shaft, a peristaltic driving unit, a plurality of eccentric rotating wheels arranged in sequence along the axial direction of the peristaltic rotating shaft, a plurality of power sheets corresponding to the plurality of eccentric rotating wheels one by one, and a limiting frame for providing a limit for the reciprocating movement of the plurality of power sheets. The power sheet is sleeved on the eccentric rotating wheel through a cavity. The automatic compensation mechanism comprises a floating compensation plate arranged on the back of the cover plate and an elastic member for providing an elastic force for the floating compensation plate. The infusion pump of the application sets the recessed automatic compensation and correction mechanism to overcome the technical problem that the power sheet cannot be extruded to the position of the infusion hose due to the appearance of the recess.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an infusion pump. Background Technology

[0002] Chinese patent (CN 105031762 A) discloses an infusion device, which describes the following (please also refer to...). Figure 1 The infusion device includes a peristaltic mechanism 2 and a pressure plate 3. The peristaltic mechanism 2 is located inside the housing and can peristally squeeze the infusion tubing 1. The inner side of the pump door 5 is provided with a pressure plate 3 that cooperates with the peristaltic mechanism 2 to press against the infusion tubing 1. The peristaltic mechanism 2 includes a first arc gear, a second arc gear, a synchronous belt, a drive shaft 15, a cam 17, and a power plate 16. The first arc gear is fixedly supported on the drive shaft, and the second arc gear is fixedly supported on the drive shaft 15. The first arc gear and the second arc gear are connected by a synchronous belt. Several cams 17 are provided along the axial direction of the drive shaft 15, and each cam 17 is provided with a power plate 16.

[0003] As can be seen from the above, the drive shaft 15 drives the cam 17 to perform eccentric rotation. The eccentric rotation of the cam 17 then drives the power plate 16 to perform linear reciprocating motion. Through the blocking action of the fixed pressure plate 3, the infusion tubing 1 is peristaltically squeezed.

[0004] Note that cam 17 causes the power plate 16 to reciprocate linearly based on eccentric rotational motion. This generates friction between cam 17 and the cavity wall of the power plate 16. Especially when cam 17 pushes the power plate 16 forward to squeeze the infusion tubing 1, the resistance between cam 17 and the cavity wall of the power plate 16 is greater, resulting in even greater friction. Over time, a dent 18 will form on one side of the cavity wall of the plastic power plate 16 (e.g., Figure 1 (As shown). During prolonged use of the infusion pump, this dent 18 will inevitably appear, which will cause the power plate 16 to fail to properly compress the infusion tubing 1, thus affecting the accuracy of the infusion.

[0005] Therefore, it is necessary to improve the technical problems mentioned above and design an automatic dent compensation and correction mechanism to overcome the technical problem that the power plate cannot squeeze the infusion tubing properly due to the occurrence of dents. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art by designing an automatic dent compensation and correction mechanism to overcome the technical problem that the power plate cannot squeeze the infusion tubing properly due to the occurrence of dents.

[0007] The objective of this invention is achieved through the following technical solution: An infusion pump includes: a base, a cover plate, a peristaltic mechanism, an automatic compensation mechanism, and an infusion tubing; The base has a pipeline channel, and the infusion tubing is detachably inserted into the pipeline channel; the cover plate is flip-mounted on the base; the peristaltic mechanism is installed on the base and located on one side of the pipeline channel, and the automatic compensation mechanism is installed on the cover plate; The peristaltic mechanism includes: a peristaltic rotating shaft, a peristaltic drive unit for driving the peristaltic rotating shaft to rotate, a plurality of eccentric rotating wheels arranged sequentially along the axial direction of the peristaltic rotating shaft, a plurality of power plates corresponding one-to-one with the plurality of eccentric rotating wheels, and a limiting frame for providing a limit for the reciprocating movement of the plurality of power plates; wherein, the power plates are sleeved on the eccentric rotating wheels through a cavity; The automatic compensation mechanism includes: a floating compensation plate disposed on the back of the cover plate, and an elastic element for providing elastic force to the floating compensation plate; In use, the floating compensation plate is located on the other side of the pipeline channel, and the infusion tubing is located between the power plates and the floating compensation plate. The peristaltic drive unit drives the eccentric wheels to rotate through the peristaltic shaft. The eccentric wheels then drive the corresponding power plates to reciprocate to squeeze the infusion tubing. The floating compensation plate is adaptively floated by the squeezing of the infusion tubing, so that a cavity wall in the cavity of the power plate abuts against the eccentric wheel.

[0008] In one embodiment, the infusion pump further includes a calibration mechanism mounted on the base; the calibration mechanism includes: a base, a large sliding plate, a small sliding block, an adjusting nut, a locking screw, a calibration drive unit, and a lead screw shaft; The large sliding plate is slidably positioned on the base, the small slider is fixed on the large sliding plate, the adjusting nut is rotatably mounted on the small slider, the adjusting nut is fastened to the small slider by the locking screw, the lead screw shaft is screwed into the internal thread hole of the adjusting nut, and the correction drive unit is drivenly connected to the lead screw shaft. The large sliding plate is provided with a correction groove, the correction groove has a correction tilt surface, and the cover plate is provided with a correction locking pin that cooperates with the correction groove.

[0009] In one embodiment, the correction drive unit includes: a correction drive motor and a correction reduction gear set; the correction reduction gear set is located at the output end of the correction drive motor, and one end of the lead screw shaft is connected to the correction reduction gear set.

[0010] In one embodiment, the infusion pump further includes an automatic liquid-stopping clamp mechanism mounted on the base; the automatic liquid-stopping clamp mechanism includes: a module mounting base, a liquid-stopping drive unit, an integrated cam, a liquid-stopping lever, a spring clamp, a first limit micro switch, and a second limit micro switch; The integrated cam is rotatably mounted on the module mounting base. The liquid-stopping drive unit is driven and connected to the integrated cam. The liquid-stopping lever is hinged to the module mounting base at its middle part. One end of the liquid-stopping lever is held against the integrated cam by the elastic force provided by the spring collet. The other end of the liquid-stopping lever extends into the pipeline channel. The integrated cam is provided with a trigger paddle. The trigger paddle touches the first limit micro switch or the second limit micro switch based on the rotation of the integrated cam.

[0011] In one embodiment, the liquid-stopping drive unit includes: a liquid-stopping drive motor, a liquid-stopping reduction gear set, and a cam shaft; the liquid-stopping reduction gear set is located at the output end of the liquid-stopping drive motor, one end of the cam shaft is connected to the reduction gear set, and the other end of the cam shaft is connected to the integrated cam.

[0012] In one embodiment, the elastic element is a cylindrical spring.

[0013] In one embodiment, the peristaltic drive unit includes: a peristaltic drive motor and a conveyor belt; the peristaltic drive motor is driven to the peristaltic shaft via the conveyor belt.

[0014] In one embodiment, the front of the cover plate is provided with a control panel.

[0015] The infusion pump of the present invention overcomes the technical problem that the power plate cannot fully compress the infusion tubing due to the occurrence of dents by setting an automatic dent compensation and correction mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an existing infusion device; Figure 2 This is an assembly diagram of an infusion pump according to an embodiment of the present invention; Figure 3 for Figure 2An exploded view (I) of the infusion pump shown. Figure 4 for Figure 2 The exploded view (II) of the infusion pump shown. Figure 5 for Figure 4 A partial structural diagram of the infusion pump is shown (I). Figure 6 for Figure 2 A three-dimensional cross-sectional view of the infusion pump shown; Figure 7 for Figure 2 A plan view sectional view of the infusion pump shown; Figure 8 for Figure 4 Partial structural diagram of the infusion pump shown (II); Figure 9 for Figure 5 The structural diagram of the calibration mechanism shown is (I); Figure 10 for Figure 5 The structural diagram of the calibration mechanism shown is (II); Figure 11 for Figure 3 The diagram shown is a structural diagram of the automatic liquid-stopping clamp mechanism. Figure 12 for Figure 11 A three-dimensional sectional view of the automatic liquid-stopping clamp mechanism shown. Figure 13 for Figure 11 The automatic liquid stop clamp mechanism shown is a plan view sectional view. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please refer to the following: Figure 2 , Figure 3 and Figure 4 The present invention discloses an infusion pump 10, comprising: a base 100, a cover plate 200, a peristaltic mechanism 300, an automatic compensation mechanism 400, and an infusion tubing 500.

[0022] The base 100 is provided with a pipe channel 101 (such as...). Figure 5 As shown), the infusion tubing 500 is detachably inserted into the tubing channel 101. The cover plate 200 is rotatably mounted on the base 100 (as shown). Figure 2 (As shown); the peristaltic mechanism 300 is mounted on the base 100 and located on one side of the pipeline channel 101 (as shown). Figure 3 and Figure 4 As shown), the automatic compensation mechanism 400 is installed on the cover plate 200 (e.g. Figure 4 (As shown). Additionally, a control panel 210 (as shown) is located on the front of the cover 200. Figure 2 (As shown).

[0023] By flipping open the cover plate 200, the pipeline channel 101 on the base 100 is exposed. The infusion tubing 500 can be installed on the pipeline channel 101. After the infusion tubing 500 is installed, the cover plate 200 is flipped back to close. Thus, the infusion tubing 500 can be positioned between the peristaltic mechanism 300 and the automatic compensation mechanism 400 (e.g., Figure 2 (As shown).

[0024] The specific structure of the peristaltic mechanism 300 will be described below (please refer to the following). Figure 6 and Figure 7 ): The peristaltic mechanism 300 includes: a peristaltic rotating shaft 310, a peristaltic drive unit 320 for driving the peristaltic rotating shaft 310 to rotate, a plurality of eccentric rotating wheels 330 arranged sequentially along the axial direction of the peristaltic rotating shaft 310, a plurality of power plates 340 corresponding one-to-one with the plurality of eccentric rotating wheels 330, and a limiting frame 350 for providing limits on the reciprocating movement of the plurality of power plates 340. The power plates 340 are sleeved on the eccentric rotating wheels 330 through a cavity 341. In this embodiment, the peristaltic drive unit 320 includes: a peristaltic drive motor and a conveyor belt; the peristaltic drive motor is driven and connected to the peristaltic rotating shaft 310 through the conveyor belt.

[0025] It should be noted that during assembly, the central axes of the eccentric rollers 330 and the peristaltic shaft 310 are not on the same straight line, i.e., an eccentric installation. Furthermore, to achieve peristaltic compression of the infusion tubing 500, the central axes of the eccentric rollers 330 are not all on the same straight line. Therefore, during the simultaneous rotation of the eccentric rollers 330 driven by the peristaltic shaft 310, the reciprocating pace of the corresponding power plates 340 driven by each eccentric roller 330 is not entirely the same, resulting in the following (as shown in the image). Figure 5 As shown, some power plates 340 are about to approach the infusion tubing 500, some power plates 340 are squeezing the infusion tubing 500, and some power plates 340 have already left the infusion tubing 500, thus realizing the peristaltic squeezing of the infusion tubing 500.

[0026] The specific structure of the automatic compensation mechanism 400 is described below: like Figure 8 As shown, the automatic compensation mechanism 400 includes: a floating compensation plate 410 disposed on the back of the cover plate 200, and an elastic element 420 for providing elastic force to the floating compensation plate 410; in this embodiment, the elastic element is a cylindrical spring.

[0027] like Figure 7 As shown, in use, the floating compensation plate 410 is located on the other side of the pipeline channel 101, and the infusion hose 500 is located between several power plates 340 and the floating compensation plate 410. The peristaltic drive unit 320 drives several eccentric wheels 330 to rotate through the peristaltic rotating shaft 310. The several eccentric wheels 330 then drive the corresponding several power plates 340 to move back and forth to squeeze the infusion hose 500. The floating compensation plate 410 is squeezed by the infusion hose 500 and floats adaptively, so that a cavity wall 342 in the cavity 341 of the power plate 340 abuts against the eccentric wheel 330.

[0028] As can be seen from the above, there is friction between the rigid eccentric roller 330 and the cavity wall 342 of the power plate 340. During long-term use, the cavity wall 342 will inevitably become concave. The occurrence of concavity will prevent the power plate 340 from pushing the infusion tubing 500 into place, thus affecting the accuracy of infusion. The present invention improves upon the traditional technology by using an automatic compensation mechanism 400 to replace the traditional fixed pressure plate. During the reciprocating movement of the power plate 340, the floating compensation plate 410 will also float adaptively, so that the cavity wall 342 in the cavity 341 of the power plate 340 is tightly abutted against the eccentric roller 330, thereby filling the aforementioned concavity.

[0029] The floating compensation plate 410 achieves floating adjustment based on the elastic force provided by the elastic element 420. When the indentation is too deep, the floating adjustment displacement of the floating compensation plate 410 is greater, and the elastic element 420 will also extend further. The elastic force of the extended elastic element 420 will be weakened accordingly, which will affect the stability of the infusion.

[0030] To better address the aforementioned technical issues, the infusion pump 10 further includes a calibration mechanism 600 mounted on the base 100 (e.g., ...). Figure 3 and Figure 4 (As shown).

[0031] Please refer to the following: Figure 9 and Figure 10 The calibration mechanism 600 includes: a base 610, a large sliding plate 620, a small slider 630, an adjusting nut 640, a locking screw 650, a calibration drive unit 660, and a lead screw shaft 670. The large sliding plate 620 is slidably positioned on the base 610. The small slider 630 is fixed to the large sliding plate 620. The adjusting nut 640 is rotatably mounted on the small slider 630 and fastened to it by the locking screw 650. The lead screw shaft 670 is screwed into the internal threaded hole of the adjusting nut 640. The calibration drive unit 660 is driven by the lead screw shaft 670. The large sliding plate 620 has a calibration groove 621 with a calibration inclined surface 622. The cover plate 200 has a calibration locking pin 201 that mates with the calibration groove 621 (e.g., a calibration locking pin 201). Figure 8 As shown). Figure 9 As shown, specifically, the correction drive unit 660 includes: a correction drive motor 661 and a correction reduction gear set 662; the correction reduction gear set 662 is located at the output end of the correction drive motor 661, and one end of the lead screw shaft 670 is connected to the correction reduction gear set 662.

[0032] When calibration is required, loosen the locking screw 650 to allow the adjusting nut 640 to rotate. Tighten the adjusting nut 640 to move it a certain distance along the axis of the lead screw shaft 670. After adjustment, tighten the locking screw 650 to lock the adjusting nut 640 back into the locked state. Thus, when the calibration drive unit 660 moves the small slider 630 and the large slide plate 620 from the starting position to the end position through the cooperation of the lead screw shaft 670 and the adjusting nut 640, the displacement of the adjusting nut 640 has changed (the calibration drive unit 660 operates according to the original program). The end position of the large slide plate 620 will also change accordingly. Therefore, the calibration chute 621, using its calibration inclined surface 622, will also pull the calibration locking pin 201 on the cover plate 200 tighter. The cover plate 200 further presses the floating compensation plate 410 towards the infusion tubing 500, thereby compressing and tensioning the elastic element 420 and improving the stability of the infusion. The calibration mechanism 600 of the present invention can not only lock the entire cover plate 200, but also perform calibration and adjustment to achieve the stability of infusion.

[0033] Furthermore, the infusion pump 10 also includes an automatic stop clamp mechanism 700 mounted on the base 100 (e.g., Figure 3 and Figure 5 (As shown).

[0034] Please refer to Figure 11 , Figure 12 and Figure 13 The automatic liquid-stopping clamp mechanism 700 includes: a module mounting base 710, a liquid-stopping drive unit 720, an integrated cam 730, a liquid-stopping actuating rod 740, a spring collet 750, a first limit micro switch 760, and a second limit micro switch 770. The integrated cam 730 is rotatably mounted on the module mounting base 710. The liquid-stopping drive unit 720 is drivenly connected to the integrated cam 730. The liquid-stopping actuating rod 740 is hinged to the module mounting base 710 at its middle part. One end of the liquid-stopping actuating rod 740 is held against the integrated cam 730 by the elastic force provided by the spring collet 750, and the other end of the liquid-stopping actuating rod 740 extends into the pipeline channel 101. The integrated cam 730 is provided with a trigger paddle 731, which touches the first limit micro switch 760 or the second limit micro switch 770 based on the rotation of the integrated cam 730. Specifically, the liquid-stopping drive unit 720 includes: a liquid-stopping drive motor, a liquid-stopping reduction gear set, and a cam shaft 721; the liquid-stopping reduction gear set is located at the output end of the liquid-stopping drive motor, one end of the cam shaft 721 is connected to the reduction gear set, and the other end of the cam shaft 721 is connected to the integrated cam 730.

[0035] Under normal conditions, the spring clamp 750 utilizes the elastic force provided by the stop liquid actuation rod 740 to clamp the infusion tubing 500 in the pipeline channel 101.

[0036] Medical staff insert the infusion tubing 500 into the tubing channel 101. The in-position detection sensor detects that the tubing is in place and sends an opening command to the main control. The main control controls the stop-fluid drive motor to rotate forward. The stop-fluid drive motor drives the integrated cam 730 to rotate synchronously via the stop-fluid reduction gear set and the cam shaft. The telecentric contour of the integrated cam 730 pushes the stop-fluid actuation rod 740 outward. The stop-fluid actuation rod 740 presses down the spring clamp 750, and the spring clamp 750 is released, and the tubing is connected. When the integrated cam 730 rotates to the opening limit angle, the trigger plate 731 touches the first limit micro switch 760. The switch sends an in-position signal to the main control, and the main control immediately cuts off the power supply to the motor. The motor stops running, and the integrated cam 730 is stably stopped at the opening position without the need for continuous power to maintain the opening state.

[0037] When the infusion pump triggers any alarm (air inlet in tubing, infusion completion, pressure over-limit, pump door malfunction, etc.), the fault detection unit sends a clamping command to the main controller. The main controller controls the stop-fluid drive motor to rotate in the reverse direction, the integrated cam 730 rotates in the reverse direction, the telecentric profile disengages from the stop-fluid actuation rod 740, and the spring clamp 750 springs back to re-clamp the infusion tubing 500, blocking the fluid path. When the integrated cam 730 rotates to the clamping limit angle, the trigger plate 731 touches the second limit micro switch 770. After receiving the position signal, the main controller cuts off the power and stops the machine. The tubing continues to be clamped and stopped, preventing gravity flow.

[0038] The automatic liquid-stopping clamp mechanism 700 of the present invention uses two microswitches to form a closed-loop positioning. After the motor starts, it rotates continuously and will only stop when the corresponding microswitch at the work station is touched. If jamming or overshoot occurs, the microswitch will not give a signal of being in position. The main control will determine that the mechanism is faulty, report an alarm and cut off the motor output to prevent the motor from stalling and burning out. The single rotation angle of the cam corresponds to only a single work station, with no intermediate uncertain state, and the opening and closing position is precise and controllable.

[0039] The automatic liquid-stopping clamp mechanism 700 of the present invention has the following beneficial effects: 1. Cam integrated drive with dual micro switch bidirectional limit structure: A single cam corresponds to the two extreme strokes of opening and closing the clamp. The cam side paddle triggers two micro switches respectively, providing real-time feedback of the work position signal, realizing precise fixed-point stopping of the motor, and solving the problems of overshoot, stalling, and undetectable position of the electric liquid stop clamp.

[0040] 2. The cam-driven liquid stop rod simplifies the transmission structure: the multi-stage linkage transmission is eliminated, and the outer edge of the cam directly presses against the liquid stop rod, reducing assembly gaps and wear, ensuring stable clamping force, reducing the number of parts, and simplifying the assembly process.

[0041] 3. Power-off maintenance liquid-stopping safety structure: The spring clamp normally clamps the pipeline, and can only be released by the cam push; after the motor is powered off, there is no external force to maintain the clamping, and the spring automatically rebounds to close the clamp, maintaining liquid-stopping in the power-off and machine-stopping state, with double safety redundancy.

[0042] 4. Modular integrated installation structure: The automatic liquid stop clamp is installed as an independent module in the blue reserved area of ​​the front shell of the infusion pump. The front shell is integrally molded to fit the mounting groove, making disassembly and maintenance convenient and compatible with the universal modification of the housing of the same series of infusion pumps.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An infusion pump, characterized in that, include: Base, cover plate, peristaltic mechanism, automatic compensation mechanism, infusion tubing; The base has a pipeline channel, and the infusion tubing is detachably inserted into the pipeline channel; the cover plate is flip-mounted on the base; the peristaltic mechanism is installed on the base and located on one side of the pipeline channel, and the automatic compensation mechanism is installed on the cover plate; The peristaltic mechanism includes: a peristaltic rotating shaft, a peristaltic drive unit for driving the peristaltic rotating shaft to rotate, a plurality of eccentric rotating wheels arranged sequentially along the axial direction of the peristaltic rotating shaft, a plurality of power plates corresponding one-to-one with the plurality of eccentric rotating wheels, and a limiting frame for providing a limit for the reciprocating movement of the plurality of power plates; wherein, the power plates are sleeved on the eccentric rotating wheels through a cavity; The automatic compensation mechanism includes: a floating compensation plate disposed on the back of the cover plate, and an elastic element for providing elastic force to the floating compensation plate; In use, the floating compensation plate is located on the other side of the pipeline channel, and the infusion tubing is located between the power plates and the floating compensation plate. The peristaltic drive unit drives the eccentric wheels to rotate through the peristaltic shaft. The eccentric wheels then drive the corresponding power plates to reciprocate to squeeze the infusion tubing. The floating compensation plate is adaptively floated by the squeezing of the infusion tubing, so that a cavity wall in the cavity of the power plate abuts against the eccentric wheel.

2. The infusion pump according to claim 1, characterized in that, The infusion pump also includes a calibration mechanism mounted on the base; the calibration mechanism includes: a base, a large sliding plate, a small sliding block, an adjusting nut, a locking screw, a calibration drive unit, and a lead screw shaft; The large sliding plate is slidably positioned on the base, the small slider is fixed on the large sliding plate, the adjusting nut is rotatably mounted on the small slider, the adjusting nut is fastened to the small slider by the locking screw, the lead screw shaft is screwed into the internal thread hole of the adjusting nut, and the correction drive unit is drivenly connected to the lead screw shaft. The large sliding plate is provided with a correction groove, the correction groove has a correction tilt surface, and the cover plate is provided with a correction locking pin that cooperates with the correction groove.

3. The infusion pump according to claim 2, characterized in that, The correction drive unit includes: a correction drive motor and a correction reduction gear set; the correction reduction gear set is located at the output end of the correction drive motor, and one end of the lead screw shaft is connected to the correction reduction gear set.

4. The infusion pump according to claim 1, characterized in that, The infusion pump also includes an automatic liquid-stopping clamp mechanism installed on the base; the automatic liquid-stopping clamp mechanism includes: a module mounting base, a liquid-stopping drive unit, an integrated cam, a liquid-stopping lever, a spring clamp, a first limit micro switch, and a second limit micro switch; The integrated cam is rotatably mounted on the module mounting base. The liquid-stopping drive unit is driven and connected to the integrated cam. The liquid-stopping lever is hinged to the module mounting base at its middle part. One end of the liquid-stopping lever is held against the integrated cam by the elastic force provided by the spring collet. The other end of the liquid-stopping lever extends into the pipeline channel. The integrated cam is provided with a trigger paddle. The trigger paddle touches the first limit micro switch or the second limit micro switch based on the rotation of the integrated cam.

5. The infusion pump according to claim 4, characterized in that, The liquid-stopping drive unit includes: a liquid-stopping drive motor, a liquid-stopping reduction gear set, and a cam shaft; the liquid-stopping reduction gear set is located at the output end of the liquid-stopping drive motor, one end of the cam shaft is connected to the reduction gear set, and the other end of the cam shaft is connected to the integrated cam.

6. The infusion pump according to claim 1, characterized in that, The elastic element is a cylindrical spring.

7. The infusion pump according to claim 1, characterized in that, The peristaltic drive unit includes a peristaltic drive motor and a conveyor belt; the peristaltic drive motor is connected to the peristaltic shaft via the conveyor belt.

8. The infusion pump according to claim 1, characterized in that, The front of the cover plate is equipped with a control panel.

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