Infusion control circuit, infusion pump and heating module for infusion pump

Abstract

The utility model provides an infusion control circuit, an infusion pump and a heating module for the infusion pump. The infusion control circuit comprises a control module, the heating module and a temperature data acquisition module, the temperature data acquisition module is electrically connected with the control module and is used for acquiring temperature data of the infusion apparatus and sending the acquired temperature data to the control module; the control module is configured to receive the temperature data, compare the temperature data with a first threshold value and output a heating control signal under the condition that the temperature data is lower than the first threshold value; the heating module is electrically connected with the control module and is used for receiving the heating control signal and starting heating according to the heating control signal; the heating module comprises a heating film arranged on the outer surface of the infusion apparatus, and the heating film is used for heating the infusion apparatus. The problem that the infusion precision is reduced when the infusion device is used outside the specified temperature range can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medical apparatus and instruments, and particularly relates to an infusion control circuit, an infusion pump and a heating module for the infusion pump. BACKGROUND

[0002] The infusion pump drives the infusion device through a motor, and monitors the infusion process through a controller and a sensor, so as to ensure the precision and stability of infusion. However, the infusion precision is affected by the hardness of the infusion device, and the hardness of the infusion device at different temperatures is different, which will cause the infusion precision to decrease.

[0003] Currently, the same industry requires that the equipment be used to infuse within a specified temperature range, otherwise the precision cannot be guaranteed. This will make the conditions for using the infusion pump more stringent, and the infusion precision worse. SUMMARY

[0004] The purpose of the embodiment is to provide an infusion control circuit, an infusion pump and a heating module for the infusion pump, so as to solve the problem of decreased infusion precision when the infusion device is used outside the specified temperature range.

[0005] In a first aspect, the application provides an infusion control circuit, comprising: a control module, a heating module and a temperature data acquisition module; the temperature data acquisition module is electrically connected with the control module, is used for acquiring temperature data of an infusion device, and sends the acquired temperature data to the control module; the control module is configured to receive the temperature data, compare the temperature data with a first threshold value, and output a heating control signal if the temperature data is lower than the first threshold value; the heating module is electrically connected with the control module, is used for receiving the heating control signal and starting heating according to the heating control signal; and the heating module comprises a heating film arranged on the outer surface of the infusion device, and the heating film is used for heating the infusion device.

[0006] In the above scheme, the temperature data acquisition module detects the temperature of the infusion device, and the heating film heats the infusion device when the temperature of the infusion device is too low. When the temperature of the infusion device rises, the hardness of the infusion device will decrease, so as to ensure the precision of the infusion device.

[0007] As an optional way, the heating film is a polyimide heating film. In the above scheme, the polyimide heating film can realize uniform heating distribution, so that the infusion device is uniformly heated, and has a certain flexibility, and is more easily attached to the outer shape structure of the infusion device.

[0008] As an optional mode, the control module is further configured to compare the temperature data with a second threshold, and output a stop heating control signal when the temperature data is higher than the second threshold; wherein the second threshold is greater than the first threshold. In the above scheme, the heating is stopped when the heating film temperature is higher than the second threshold, which enhances the safety and reliability of the infusion device.

[0009] As an optional mode, the heating module further comprises a temperature fuse arranged on the surface of the heating film; the fuse has a melting temperature greater than the second threshold. In the above scheme, the temperature of the heating film is monitored by the temperature fuse to ensure the safety of the infusion.

[0010] As an optional mode, the temperature data acquisition module comprises an NTC thermistor. In the above scheme, the NTC thermistor is used to detect the temperature, which has fast response speed, high stability, and is easy to install and use.

[0011] As an optional mode, the temperature data acquisition module comprises a first capacitor, a first resistor, and the NTC thermistor; a first end of the first resistor is connected to a reference voltage, a second end of the first resistor is connected to a first end of the NTC thermistor and a first pin of the control module, a second end of the NTC thermistor is grounded, and the first pin of the control module is grounded through the first capacitor.

[0012] In the above scheme, the circuit implementation of the temperature data acquisition module is given, which uses the NTC thermistor to collect the temperature of the infusion device, and the output of the circuit is connected to the first pin of the control module to send the collected temperature of the infusion device to the control module.

[0013] As an optional mode, the heating module comprises a second resistor, a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a triode, a P-channel MOS tube, and the heating film; a first end of the second resistor is connected to a second pin of the control module, a second end of the second resistor is connected to a base of the triode and a first end of the third resistor, a second end of the third resistor is grounded, the base of the triode is grounded through the second capacitor, an emitter of the triode is grounded, a collector of the triode is connected to a first end of the fourth resistor, a second end of the fourth resistor is connected to the third capacitor, the fifth resistor, a first end of the fourth capacitor, and a gate of the P-channel MOS tube, the third capacitor, the fifth resistor, and a source of the P-channel MOS tube are connected to a power supply voltage, a drain of the P-channel MOS tube and a second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

[0014] In the above scheme, the circuit implementation of the heating module is given, according to the control signal output by the control module, the start and stop of heating is realized by the opening and closing of the triode, the current through the heating film can generate heat to continuously heat the infusion device.

[0015] In a second aspect, the application provides an infusion control circuit, comprising: a control module, a heating module and a temperature data acquisition module; the temperature data acquisition module is electrically connected with the control module, used for acquiring temperature data of an infusion device and sending the acquired temperature data to the control module; the control module is configured to include: a first threshold and a second threshold, if the acquired temperature data is lower than the first threshold, a rapid heating control signal is output, and if the acquired temperature data is higher than the first threshold and lower than the second threshold, a heat preservation heating control signal is output; the heating module is electrically connected with the control module, used for receiving the rapid heating control signal or the heat preservation heating control signal to make the heating module execute corresponding heating control; the heating module comprises a heating film arranged on the outer surface of the infusion device, and the heating film is used for heating the infusion device. In the above scheme, the added module perfects the heating mechanism of the infusion control circuit, not only improves the functionality and user experience of the control circuit, but also enhances the reliability and safety.

[0016] As an optional way, the heating module further comprises a temperature fuse arranged on the surface of the heating film; wherein the heating film is a polyimide heating film; the melting temperature of the temperature fuse is greater than the second threshold.

[0017] As an optional mode, the temperature data acquisition module comprises: a first capacitor, a first resistor, and the NTC thermistor; a first end of the first resistor is connected with a reference voltage, a second end of the first resistor is connected with a first end of the NTC thermistor and a first pin of the control module, a second end of the NTC thermistor is grounded, and the first pin of the control module is grounded through the first capacitor; and the heating module comprises: a second resistor, a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a triode, a P-channel MOS tube, and the heating film; a first end of the second resistor is connected with a second pin of the control module, a second end of the second resistor is connected with a base of the triode and a first end of the third resistor, a second end of the third resistor is grounded, the base of the triode is grounded through the second capacitor, an emitter of the triode is grounded, a collector of the triode is connected with a first end of the fourth resistor, a second end of the fourth resistor is connected with the third capacitor, the fifth resistor, a first end of the fourth capacitor, and a gate of the P-channel MOS tube, the third capacitor, the fifth resistor, and a source of the P-channel MOS tube are connected with a power supply voltage, a drain of the P-channel MOS tube and a second end of the fourth capacitor are grounded through the fifth capacitor and connected with the heating film.

[0018] In a third aspect, the present application provides a kind of infusion pump, comprising: infusion device, and the motor for driving the infusion device;Wherein, the motor is controlled by the infusion control circuit as described in the first or second aspect.

[0019] In a fourth aspect, the present application provides a kind of heating module for infusion pump, comprising heating film arranged on the outer surface of infusion device, and the heating film is used to heat the infusion device;Wherein, the heating film is polyimide heating film.

[0020] Other features and advantages of the present application will be described in the following specification, and part of it becomes obvious from the specification, or by implementing the present embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present embodiment, the following will briefly introduce the drawings needed to be used in the present embodiment, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The structural schematic diagram of the infusion control circuit provided by the present embodiment is shown in the figure.

[0023] Figure 2A control module structure schematic diagram provided for the embodiment;

[0024] Figure 3 A temperature data acquisition module circuit schematic diagram provided for the embodiment;

[0025] Figure 4 A heating module circuit schematic diagram provided for the embodiment;

[0026] Figure 5 Another infusion control circuit structure schematic diagram provided for the embodiment. DETAILED DESCRIPTION

[0027] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0028] It should be noted that all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs; the terms used herein are only for the purpose of describing the specific embodiments and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the present embodiment, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the present embodiment, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0030] Please refer to Figure 1 , Figure 1 A infusion control circuit structure schematic diagram provided for the embodiment, the control circuit includes: a control module 100, a heating module 101 and a temperature data acquisition module 102; the temperature data acquisition module 102 is electrically connected with the control module 100, used for acquiring temperature data of the infusion device, and sending the acquired temperature data to the control module 100; the control module 100 is configured to receive the temperature data, compare the temperature data with the first threshold value, and output a heating control signal in the case that the temperature data is lower than the first threshold value; the heating module 101 is electrically connected with the control module 100, used for receiving the heating control signal and starting heating according to the heating control signal; the heating module 101 includes a heating film arranged on the outer surface of the infusion device, and the heating film is used for heating the infusion device.

[0031] When the infusion device is working, the temperature data acquisition module 102 acquires the temperature of the infusion device. When the temperature of the infusion device is lower than the first threshold value, the control module 100 controls the heating film in the heating module 101 to heat the infusion device, so that the temperature of the infusion device is maintained within the specified temperature range. The heating film is arranged on the outer surface of the infusion device, can quickly heat the infusion device, and reduce the hardness of the infusion device, so as to ensure the infusion accuracy and more accurately control the temperature of the infusion device, and ensure that the temperature of the infusion device is not too high or too low, and reduce the safety risk.

[0032] The first threshold value is a temperature value. When the temperature of the infusion device is lower than the first threshold value, it indicates that the current temperature of the infusion device has affected the normal working accuracy of the infusion device. The size of the first threshold value is not limited in the application, and can be adjusted by those skilled in the art according to the actual situation.

[0033] The control module 100 can be an integrated circuit chip with signal processing capability. It can also be a general-purpose processor including a central processing unit (CPU), a micro controller unit (MCU), a network processor (NP) or other conventional processors. It can also be a special-purpose processor including a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0034] As an embodiment, refer to Figure 2 , Figure 2 The control module 100 used in this embodiment is an N32G452VEL7 single-chip microcomputer.

[0035] Optionally, the temperature data acquisition module 102 can be used to acquire the temperature of the heating film and send the acquired temperature of the heating film to the control module 100.

[0036] The temperature data acquisition module 102 can also monitor the temperature of the heating film, prevent overheating, avoid damage or melting of the infusion device due to high temperature, and ensure infusion safety. The control module 100 can adjust the power of the heating element according to the feedback of the temperature of the heating film to maintain the set temperature.

[0037] In the above scheme, the temperature of the infusion device is detected by the temperature data acquisition module 102, and the infusion device is heated by the heating film when the temperature of the infusion device is too low. When the temperature of the infusion device rises, the stiffness of the infusion device will decrease, thereby ensuring the accuracy of the infusion device.

[0038] In some embodiments, the heating film is a polyimide heating film.

[0039] A polyimide heating film is a heating element that uses a polyimide film as a substrate, including a polyimide film, a heating resistor layer, an insulating layer, etc. Its working principle is to generate Joule heating when an electric current passes through the heating resistor layer, thereby achieving heating. When an electric current passes through the heating resistor layer, the resistor layer will heat up and transfer heat to the surrounding environment or the heated object.

[0040] The polyimide heating film arranged on the outer surface of the infusion device can quickly transfer the generated heat to the infusion device, so that the infusion device works within the specified usage range.

[0041] In the above scheme, the polyimide heating film can achieve uniform heating distribution, so that the infusion device is uniformly heated and has a certain flexibility, making it easier to fit the shape of the infusion device.

[0042] Before the heating film is heated, the temperature collected by the temperature data acquisition module 102 is the same as or similar to the ambient temperature. After the heating film starts heating, the temperature collected by the temperature data acquisition module 102 is the temperature after the heating film is heated. In some embodiments, the control module 100 is further configured to compare the temperature data with a second threshold value, and output a stop heating control signal when the temperature data is higher than the second threshold value; wherein the second threshold value is greater than the first threshold value.

[0043] In order to more accurately monitor the temperature of the infusion device and prevent overheating, a second threshold value is set. When the temperature of the infusion device caused by the heating of the heating film is higher than the second threshold value, the control module 100 controls the heating module 101 to stop heating.

[0044] The second threshold value is a temperature value. When the temperature of the infusion device is higher than the second threshold value, it indicates that the current temperature of the infusion device is close to or has affected the safety of the infusion. The size of the second threshold value is not specifically limited in the present application, and can be adjusted by those skilled in the art according to the actual situation.

[0045] In the above scheme, the heating is stopped when the temperature of the infusion device is higher than the second threshold value, which enhances the safety and reliability of the infusion device.

[0046] In some embodiments, the heating module 101 further comprises a temperature fuse arranged on the surface of the heating film; the fusing temperature of the temperature fuse is greater than the second threshold value.

[0047] The temperature fuse arranged on the surface of the heating film can sense the temperature of the heating film, and when the temperature of the heating film rises to the preset fusing temperature, the circuit is automatically cut off to avoid overheating or even fire accidents.

[0048] The selection of the temperature fuse is not specifically limited in the present application, and those skilled in the art can adjust it according to the actual situation. For example, KSD9700 series temperature fuse can be used.

[0049] The first threshold value and the second threshold value can be manually set according to the environment or weather, season, etc., and the second threshold value close to the body temperature of human body can be used.

[0050] In the above scheme, the temperature of the heating film is monitored by the temperature fuse to ensure the safety of infusion.

[0051] In some embodiments, the temperature data acquisition module 102 comprises an NTC thermistor.

[0052] The NTC thermistor is a semiconductor resistor, and its resistance value decreases with the increase of temperature, that is, it has the characteristic of negative temperature coefficient, and can provide high-precision and fast-response temperature measurement.

[0053] The NTC thermistor converts the temperature signal into an electrical signal for analysis and processing by the control module 100.

[0054] In the above scheme, the NTC thermistor is used to detect temperature, which has fast response speed, high stability, and is easy to install and use.

[0055] In some embodiments, referring to Figure 3 , Figure 3 A circuit schematic diagram of a temperature data acquisition module is provided for the present embodiment. The temperature data acquisition module 102 comprises: a first capacitor C1, a first resistor R1, and an NTC thermistor; the first end of the first resistor R1 is connected to a reference voltage VREF, the second end of the first resistor R1 is connected to the first end of the NTC thermistor and the first pin of the control module 100, the second end of the NTC thermistor is grounded, and the first pin of the control module 100 is grounded through the first capacitor C1.

[0056] As an implementation, the reference voltage VREF connected to the first end of the first resistor R1 can be 3.3V.

[0057] In Figure 2In the illustrated embodiment, the temperature data acquisition module 102 can be connected to the 16th pin ADC_NTC of the control module 100 to send the collected temperature to the control module 100.

[0058] In the above scheme, the circuit implementation of the temperature data acquisition module 102 is given, which uses an NTC thermistor to collect the temperature of the infusion device, and the output of the circuit is connected to the first pin of the control module 100 to send the collected temperature of the infusion device to the control module 100.

[0059] In some embodiments, with reference to Figure 4 , Figure 4 A circuit schematic of a heating module is provided for the present application, the heating module 101 includes: a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a triode Q1, a P-channel MOS tube Q2, and a heating film; the first end of the second resistor R2 is connected to the second pin of the control module 100, the second end of the second resistor R2 is connected to the base of the triode Q1 and the first end of the third resistor R3, the second end of the third resistor R3 is grounded, the base of the triode Q1 is grounded through the second capacitor C2, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the third capacitor C3, the fifth resistor R5, the first end of the fourth capacitor C4, and the gate of the P-channel MOS tube Q2, the third capacitor C3, the fifth resistor R5, and the source of the P-channel MOS tube Q2 are connected to the power supply voltage, the drain of the P-channel MOS tube Q2 and the second end of the fourth capacitor C4 are grounded through the fifth capacitor C5 and connected to the heating film.

[0060] The heating module 101 is used to control the heating film to turn on or off heating, wherein VDD_TEMP point is connected to the heating film, the triode Q1 acts as a heating switch, when the temperature of the infusion device collected by the temperature data acquisition module 102 is too low and reaches a first threshold value, the control module 100 outputs a high-level heating control signal ON_NTC to the heating module 101, at this time, the triode Q1 and the P-channel MOS tube Q2 are both in a conducting state, thereby controlling the heating film to turn on heating; when the temperature of the heating film collected by the temperature data acquisition module 102 is too high and reaches a second threshold value, the control module 100 outputs a low-level stop heating control signal, so that the triode Q1 and the P-channel MOS tube Q2 are both in a cut-off state, thereby controlling the heating film to stop heating.

[0061] In the above scheme, the circuit implementation of the heating module 101 is given, according to the control signal output by the control module 100, the start and stop of heating are realized by the opening and closing of the triode, and when the current passes through the heating film, heat can be generated to continuously heat the infusion device.

[0062] In some embodiments, referring to Figure 5 , Figure 5 Another structural schematic diagram of an infusion control circuit is provided in this embodiment. The control circuit further comprises: a key indicator light module 103 connected with the control module 100, a display driving module 104, a motor driving module 105, a horn driving module 106, a pressure acquisition module 107, a charging management module 108, a power management module 109, and a power switch module 110.

[0063] The key indicator light module 103 is used to provide a user interface, allowing the user to operate through the keys and providing indicator light display device status. The display driving module 104 is responsible for driving the display screen to display information when the infusion device is configured with a display screen. The motor driving module 105 is used to control the motor of the infusion pump to ensure the accuracy and stability of the infusion. The horn driving module 106 is used to drive the horn to alarm when a fault occurs, such as the temperature of the heating film being too high. The pressure acquisition module 107 is used to monitor the pressure of the liquid medicine in the infusion set. When the infusion set is folded or blocked, the pressure of the liquid medicine will rise. This module is responsible for acquiring the pressure of the liquid medicine and timely alarming. The charging management module 108 is responsible for the control and management of the charging process. The power management module 109 is responsible for the supply of power and the stability of voltage, ensuring the stable operation of the circuit. The power switch module 110 controls the opening and closing of the power supply.

[0064] In the above scheme, the added modules perfect the user interaction mechanism, alarm mechanism and monitoring mechanism of the infusion control circuit, not only improving the functionality and user experience of the control circuit, but also enhancing the reliability and safety.

[0065] The present application provides an infusion control circuit, comprising: a control module 100, a heating module 101 and a temperature data acquisition module 102; the temperature data acquisition module 102 is electrically connected with the control module 100, used for acquiring temperature data of an infusion set and sending the acquired temperature data to the control module 100; the control module 100 is configured to include: a first threshold value and a second threshold value, if the acquired temperature data is lower than the first threshold value, a rapid heating control signal is outputted, and if the acquired temperature data is higher than the first threshold value and lower than the second threshold value, a heat preservation heating control signal is outputted; the heating module 101 is electrically connected with the control module 100, used for receiving the rapid heating control signal or the heat preservation heating control signal, so that the heating module 101 performs corresponding heating control; the heating module 101 comprises a heating film arranged on the outer surface of the infusion set, and the heating film is used for heating the infusion set.

[0066] In some embodiments, the heating module 101 further comprises a temperature fuse arranged on the surface of the heating film; wherein the heating film is a polyimide heating film; the melting temperature of the temperature fuse is greater than the second threshold value.

[0067] In some embodiments, the temperature data acquisition module 102 comprises: a first capacitor C1, a first resistor R1, an NTC thermistor; a first end of the first resistor R1 is connected to a reference voltage, a second end of the first resistor R1 is connected to a first end of the NTC thermistor and a first pin of the control module 100, a second end of the NTC thermistor is grounded, and the first pin of the control module 100 is grounded through the first capacitor C1; and the heating module 101 comprises: a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a triode Q1, a P-channel MOS tube Q2, and a heating film; a first end of the second resistor R2 is connected to a second pin of the control module 100, a second end of the second resistor R2 is connected to a base of the triode Q1 and a first end of the third resistor R3, a second end of the third resistor R3 is grounded, the base of the triode Q1 is grounded through the second capacitor C2, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is connected to the third capacitor C3, the fifth resistor R5, a first end of the fourth capacitor C4, and a gate of the P-channel MOS tube Q2, the third capacitor C3, the fifth resistor R5, and a source of the P-channel MOS tube Q2 are connected to a power supply voltage, a drain of the P-channel MOS tube Q2 and a second end of the fourth capacitor C4 are grounded through the fifth capacitor C5 and connected to the heating film.

[0068] At least one embodiment provides an infusion pump, comprising: an infusion device, and a motor for driving the infusion device; wherein the motor is controlled by the infusion control circuit in any of the above embodiments.

[0069] In some embodiments, the infusion device is used to squeeze the infusion tube so that the medicine can enter the human body, and the structure of the infusion device belongs to the prior art, and the present embodiment does not improve the structure of the infusion device.

[0070] The application provides a heating module for an infusion pump, comprising a heating film arranged on the outer surface of an infusion device, the heating film being used for heating the infusion device; wherein the heating film is a polyimide heating film.

[0071] The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, and for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed mutual ones can be indirect coupling or communication connection through some communication interface, device or unit, which can be electrical, mechanical or other forms.

[0072] In addition, the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0073] Furthermore, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0074] The above is only an embodiment of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An infusion control circuit, characterized by, include: Control module, heating module, and temperature data acquisition module; The temperature data acquisition module is electrically connected to the control module and is used to acquire the temperature data of the infusion set and send the acquired temperature data to the control module. The control module is configured to receive the temperature data, compare the temperature data with a first threshold, and output a heating control signal when the temperature data is lower than the first threshold. The heating module is electrically connected to the control module and is used to receive the heating control signal and start heating according to the heating control signal; The heating module includes a heating film disposed on the outer surface of the infusion set, the heating film being used to heat the infusion set; The heating module also includes a temperature fuse disposed on the surface of the heating film; The melting temperature of the thermal fuse is greater than the second threshold. The temperature data acquisition module includes: a first capacitor, a first resistor, and an NTC thermistor; The first end of the first resistor is connected to a reference voltage, the second end of the first resistor is connected to the first end of the NTC thermistor and the first pin of the control module, the second end of the NTC thermistor is grounded, and the first pin of the control module is grounded through the first capacitor.

2. The infusion control circuit of claim 1, wherein, The heating film is a polyimide heating film.

3. The infusion control circuit according to claim 1, characterized in that, The control module is further configured to compare the temperature data with a second threshold, and output a stop heating control signal if the temperature data is higher than the second threshold; wherein the second threshold is greater than the first threshold.

4. The infusion control circuit according to claim 1, characterized in that, The heating module includes: a second resistor, a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a transistor, a P-channel MOSFET, and the heating film; The first end of the second resistor is connected to the second pin of the control module. The second end of the second resistor is connected to the base of the transistor and the first end of the third resistor. The second end of the third resistor is grounded. The base of the transistor is grounded through the second capacitor. The emitter of the transistor is grounded. The collector of the transistor is connected to the first end of the fourth resistor. The second end of the fourth resistor is connected to the third capacitor, the fifth resistor, the first end of the fourth capacitor, and the gate of the P-channel MOSFET. The third capacitor, the fifth resistor, and the source of the P-channel MOSFET are connected to the power supply voltage. The drain of the P-channel MOSFET and the second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

5. An infusion control circuit, comprising: include: Control module, heating module, and temperature data acquisition module; The temperature data acquisition module is electrically connected to the control module and is used to acquire the temperature data of the infusion set and send the acquired temperature data to the control module. The control module is configured to include a first threshold value and a second threshold value, and output a rapid heating control signal when the collected temperature data is below the first threshold value, and output a temperature maintenance heating control signal when the collected temperature data is above the first threshold value and below the second threshold value; The heating module is electrically connected with the control module, and is configured to receive the rapid heating control signal or the temperature maintenance heating control signal, so that the heating module performs corresponding heating control; The heating module includes a heating film arranged on the outer surface of the infusion device, and the heating film is configured to heat the infusion device; The heating module further includes a temperature fuse arranged on the surface of the heating film, and the temperature fuse has a melting temperature greater than the second threshold value; The temperature data collection module includes a first capacitor, a first resistor, and an NTC thermistor. A first end of the first resistor is connected to a reference voltage, a second end of the first resistor is connected to a first end of the NTC thermistor and a first pin of the control module, a second end of the NTC thermistor is grounded, and the first pin of the control module is grounded through the first capacitor.

6. The infusion control circuit of claim 5, wherein wherein, The heating film is a polyimide heating film.

7. The infusion control circuit of claim 5, wherein The heating module includes a second resistor, a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a triode, a P-channel MOS tube, and the heating film. A first end of the second resistor is connected to a second pin of the control module, a second end of the second resistor is connected to a base of the triode and a first end of the third resistor, a second end of the third resistor is grounded, the base of the triode is grounded through the second capacitor, an emitter of the triode is grounded, a collector of the triode is connected to a first end of the fourth resistor, a second end of the fourth resistor is connected to the third capacitor, the fifth resistor, a first end of the fourth capacitor, and a gate of the P-channel MOS tube, the third capacitor, the fifth resistor, and a source of the P-channel MOS tube are connected to a power supply voltage, a drain of the P-channel MOS tube and a second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

8. An infusion pump, characterized by The infusion control circuit includes an infusion device and a motor for driving the infusion device, and the motor is controlled by the infusion control circuit according to any one of claims 1-7. The heating film is a polyimide heating film.

9. A heating module for an infusion pump, characterized by ​

Images