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

Abstract

The invention 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 present invention relates to the technical field of medical devices, and in particular to an infusion control circuit, an infusion pump, and a heating module for the infusion pump. Background Art

[0002] The infusion pump drives the infusion device through a motor to infuse, and monitors the infusion process through a controller and a sensor to ensure the accuracy and stability of the infusion. However, the infusion accuracy is affected by the hardness of the infusion set, and the hardness of the infusion set is different at different temperatures, which will lead to a decrease in the infusion accuracy.

[0003] At present, peers require that the equipment be used within the specified temperature range for infusion, otherwise the accuracy cannot be guaranteed. This will lead to more stringent conditions for the use of infusion pumps and worse infusion accuracy. Summary of the invention

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

[0005] In a first aspect, the present 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 to the control module, and is used to collect temperature data of an infusion device, and send the collected 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 turn on heating according to the heating control signal; the heating module includes a heating film arranged on the outer surface of the infusion device, and the heating film is used to heat the infusion device.

[0006] In the above scheme, the temperature of the infusion pump is detected by the temperature data acquisition module, and the infusion pump is heated by the heating film when the temperature of the infusion pump is low. When the temperature of the infusion pump rises, the hardness of the infusion pump will decrease, thereby ensuring the accuracy of the infusion pump.

[0007] As an optional method, the heating film is a polyimide heating film. In the above scheme, the polyimide heating film can achieve uniform heating distribution, so that the infusion set is evenly heated, and has a certain flexibility, which makes it easier to fit the shape and structure of the infusion set.

[0008] As an optional manner, the control module 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. In the above scheme, heating is stopped when the temperature of the heating film is higher than the second threshold value, thereby enhancing the safety and reliability of the infusion device.

[0009] As an optional method, the heating module further includes a temperature fuse arranged on the surface of the heating film; the fuse has a melting temperature greater than a 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 method, the temperature data acquisition module includes an NTC thermistor. In the above scheme, the NTC thermistor is used to detect the temperature, which has a fast response speed, high stability, and is easy to install and use.

[0011] As an optional manner, the temperature data acquisition module includes: a first capacitor, a first resistor, and the 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.

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

[0013] As an optional manner, 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 MOS transistor 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 MOS transistor, the third capacitor, the fifth resistor and the source of the P-channel MOS transistor are connected to the power supply voltage, the drain of the P-channel MOS transistor and the second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

[0014] In the above scheme, a circuit implementation method of the heating module is given. According to the control signal output by the control module, the heating is started and stopped by opening and closing the transistor. When the current passes through the heating film, heat can be generated to continuously heat the infusion pump.

[0015] In the second aspect, the present 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 to the control module, and is used to collect temperature data of the infusion device, and send the collected temperature data to the control module; the control module is configured to include: a first threshold value and a second threshold value, if the collected temperature data is lower than the first threshold value, a rapid heating control signal is output, and when the collected temperature data exceeds the first threshold value and is lower than the second threshold value, a heat preservation heating control signal is output; the heating module is electrically connected to the control module, and is used to receive the rapid heating control signal or the heat preservation 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 used to heat the infusion device. . In the above scheme, the added module improves the heating mechanism of the infusion control circuit, which not only improves the functionality and user experience of the control circuit, but also enhances reliability and safety.

[0016] As an optional manner, 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; and the fusing temperature of the temperature fuse is greater than the second threshold value.

[0017] As an optional manner, the temperature data acquisition module includes: a first capacitor, a first resistor, and the 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; and 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 MOS transistor, and the heating film; the first end of the second resistor is connected to the second end of the control module pin, 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 MOS tube, the third capacitor, the fifth resistor and the source of the P-channel MOS tube are connected to the power supply voltage, the drain of the P-channel MOS tube and the second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

[0018] In a third aspect, the present application 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 as described in the first or second aspect.

[0019] In a fourth aspect, the present application provides a heating module for an infusion pump, comprising a heating film disposed on the outer surface of an infusion set, the heating film being used to heat the infusion set; wherein the heating film is a polyimide heating film. .

[0020] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or will be understood by implementing the present embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of this embodiment, the drawings required for use in this embodiment will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of an infusion control circuit provided in this embodiment;

[0023] Figure 2A schematic diagram of the structure of a control module provided in this embodiment;

[0024] Figure 3 A circuit schematic diagram of a temperature data acquisition module provided in this embodiment;

[0025] Figure 4 A circuit schematic diagram of a heating module provided in this embodiment;

[0026] Figure 5 A schematic diagram of the structure of another infusion control circuit provided in this embodiment. DETAILED DESCRIPTION

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

[0028] It should be noted that all technical and scientific terms used in this document have the same meanings as those generally understood by technicians in the technical field to which this application belongs; the terms used in this document are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the description of this 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 this embodiment, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Please refer to Figure 1 , Figure 1 A structural schematic diagram of an infusion control circuit provided for the present embodiment, the control circuit comprises: a control module 100, a heating module 101 and a temperature data acquisition module 102; the temperature data acquisition module 102 is electrically connected to the control module 100, and is used to collect temperature data of the infusion set, and send the collected temperature data to the control module 100; the control module 100 is configured to receive the temperature data, compare the temperature data with a first threshold value, and output a heating control signal when the temperature data is lower than the first threshold value; the heating module 101 is electrically connected to the control module 100, and is used to receive the heating control signal and start heating according to the heating control signal; the heating module 101 comprises a heating film arranged on the outer surface of the infusion set, and the heating film is used to heat the infusion set.

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

[0032] The first threshold is a temperature value. When the temperature of the infusion device is lower than the first threshold, it indicates that the current temperature of the infusion device has affected the normal working accuracy of the infusion device. The present application does not make any specific limitation on the size of the first threshold, and those skilled in the art may adjust it according to actual conditions.

[0033] The control module 100 can be implemented in various ways, and can be an integrated circuit chip with signal processing capabilities. It can also be a general-purpose processor, including a central processing unit (CPU), a microcontroller unit (MCU), a network processor (NP), or other conventional processors; it can also be a dedicated 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 gates or transistor logic devices, and discrete hardware components.

[0034] As an implementation method, refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a control module provided in this embodiment. In this embodiment, the control module 100 adopts an N32G452VEL7 single-chip microcomputer.

[0035] Optionally, the temperature data acquisition module 102 may 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 collect the temperature of the heating film and monitor the temperature to prevent overheating, thereby preventing the infusion set from being damaged or melted due to overheating, and ensuring the safety of infusion. The control module 100 can adjust the power of the heating element according to the feedback of the heating film temperature to maintain the set temperature.

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

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

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

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

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

[0042] Before the heating film is heated, the temperature collected by the temperature data collection module 102 is the same as or close to the ambient temperature. After the heating film starts to heat, the temperature collected by the temperature data collection 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 pump and prevent overheating, a second threshold is set. When the heating film is heated and the temperature of the infusion pump is higher than the second threshold, the control module 100 controls the heating module 101 to stop heating.

[0044] The second threshold is a temperature value. When the temperature of the infusion set is higher than the second threshold, it indicates that the current temperature of the infusion set is approaching or has affected the safety of the infusion. The present application does not make any specific limitation on the size of the second threshold, and those skilled in the art may adjust it according to actual conditions.

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

[0046] In some embodiments, the heating module 101 further includes a temperature fuse disposed 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 is set on the surface of the heating film and can sense the temperature of the heating film. When the temperature of the heating film rises to the preset fuse temperature, it will automatically cut off the circuit to avoid overheating or even fire accidents.

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

[0049] The first threshold and the second threshold can be manually set according to the surrounding environment or weather and season conditions. Generally, the second threshold can be close to human body temperature.

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

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

[0052] NTC thermistor is a semiconductor resistor whose resistance decreases as the temperature increases, that is, it has the characteristic of negative temperature coefficient, which 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, 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, reference Figure 3 , Figure 3 A circuit schematic diagram of a temperature data acquisition module provided in this embodiment. The temperature data acquisition module 102 includes: a first capacitor C1, a first resistor R1, and an NTC thermistor; a first end of the first resistor R1 is connected to a reference voltage VREF, 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.

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

[0057] exist Figure 2In the illustrated embodiment, the temperature data acquisition module 102 may be connected to the pin No. 16 ADC_NTC of the control module 100 to send the acquired temperature to the control module 100 .

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

[0059] In some embodiments, reference Figure 4 , Figure 4 A circuit schematic diagram of a heating module provided in 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 transistor Q1, a P-channel MOS transistor 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 transistor Q1 and the first end of the third resistor R3, and the second end of the third resistor R3 is grounded The base of the transistor Q1 is grounded through the second capacitor C2, the emitter of the transistor Q1 is grounded, the collector of the transistor 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 the VDD_TEMP point is connected to the heating film, and the transistor Q1 is used as a heating switch. When the temperature of the infusion set collected by the temperature data acquisition module 102 is too low and reaches a first threshold, the control module 100 outputs a high-level heating control signal ON_NTC to the heating module 101. At this time, the transistor Q1 and the P-channel MOS tube Q2 are both in the on 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, the control module 100 outputs a low-level stop heating control signal, so that the transistor Q1 and the P-channel MOS tube Q2 are both in the off state, thereby controlling the heating film to stop heating.

[0061] In the above scheme, a circuit implementation method of the heating module 101 is given. According to the control signal output by the control module 100, the heating is started and stopped by opening and closing the transistor. When the current passes through the heating film, heat can be generated to continuously heat the infusion set.

[0062] In some embodiments, reference Figure 5 , Figure 5 This is a schematic diagram of another infusion control circuit provided in this embodiment. The control circuit further includes: a button indicator light module 103 connected to the control module 100, a display driver module 104, a motor driver module 105, a speaker driver 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 button indicator module 103 is used to provide a user interface, allowing the user to operate through buttons, and provides indicator lights to display the device status. When the infusion device is equipped with a display screen, the display driver module 104 is responsible for driving the display screen to display information. The motor driver module 105 is used to control the motor of the infusion pump to ensure the accuracy and stability of the infusion. The speaker driver module 106 is used to drive the speaker to alarm when a fault occurs, such as the temperature of the heating film is too high. The pressure acquisition module 107 is used to monitor the pressure of the medicine in the infusion device. When the infusion device is folded or blocked, the pressure of the medicine will increase. This module is responsible for collecting the pressure of the medicine and giving an alarm in time. 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 to ensure the stable operation of the circuit. The power switch module 110 controls the power on and off.

[0064] In the above solution, the added modules improve the user interaction mechanism, alarm mechanism and monitoring mechanism of the infusion control circuit, which not only improves the functionality of the control circuit and the user experience, but also enhances 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 to the control module 100, and is used to collect temperature data of an infusion set, and send the collected 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 collected temperature data is lower than the first threshold value, a rapid heating control signal is output, and when the collected temperature data exceeds the first threshold value and is lower than the second threshold value, a heat preservation and heating control signal is output; the heating module 101 is electrically connected to the control module 100, and is used to receive a rapid heating control signal or a heat preservation and heating control signal, so that the heating module 101 performs corresponding heating control; the heating module 101 includes a heating film arranged on the outer surface of the infusion set, and the heating film is used to heat the infusion set.

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

[0067] In some embodiments, the temperature data acquisition module 102 includes: 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, 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; and 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 transistor Q1, a P-channel MOS transistor Q2, and a heating film; the first end of the second resistor R2 is connected to the reference voltage, 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; The second pin of the control module 100 is connected, the second end of the second resistor R2 is connected to the base of the transistor Q1 and the first end of the third resistor R3, the second end of the third resistor R3 is grounded, the base of the transistor Q1 is grounded through the second capacitor C2, the emitter of the transistor Q1 is grounded, the collector of the transistor 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.

[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 drug solution can enter the human body. The structure of the infusion device belongs to the existing technology, and this embodiment does not make any improvement to the structure of the infusion device.

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

[0071] The device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. There may be other divisions in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, and the indirect coupling or communication connection of the devices or units may be electrical, mechanical or other forms.

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

[0073] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

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

Claims

1. An infusion control circuit, characterized in that: 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 temperature data of the infusion device 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 if 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 comprises a heating film arranged on the outer surface of the infusion set, and the heating film is used to heat the infusion set.

2. The infusion control circuit according to claim 1, characterized in that: 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 when 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 also includes a temperature fuse arranged on the surface of the heating film; The fusing temperature of the thermal fuse is greater than a second threshold.

5. The infusion control circuit according to claim 1, characterized in that: The temperature data acquisition module includes: a first capacitor, a first resistor, and the 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.

6. 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 triode, a P-channel MOS tube 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 MOS tube, the third capacitor, the fifth resistor and the source of the P-channel MOS tube are connected to the power supply voltage, the drain of the P-channel MOS tube and the second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

7. An infusion control circuit, characterized in that: 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 temperature data of the infusion device 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, if the collected temperature data is lower than the first threshold value, a rapid heating control signal is output, and if the collected temperature data exceeds the first threshold value and is lower than the second threshold value, a heat preservation and heating control signal is output; The heating module is electrically connected to the control module and is used to receive the rapid heating control signal or the heat preservation heating control signal so that the heating module performs corresponding heating control; The heating module comprises a heating film arranged on the outer surface of the infusion set, and the heating film is used to heat the infusion set.

8. The infusion control circuit according to claim 7, characterized in that: The heating module also includes a temperature fuse arranged on the surface of the heating film; Wherein, the heating film is a polyimide heating film; The fusing temperature of the thermal fuse is greater than the second threshold.

9. The infusion control circuit according to claim 7, characterized in that: The temperature data acquisition module includes: a first capacitor, a first resistor, and the 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; and 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; 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 MOS tube, the third capacitor, the fifth resistor and the source of the P-channel MOS tube are connected to the power supply voltage, the drain of the P-channel MOS tube and the second end of the fourth capacitor are grounded through the fifth capacitor and connected to the heating film.

10. An infusion pump, characterized in that: include: An infusion device, and a motor for driving the infusion device; wherein the motor is controlled by an infusion control circuit as described in any one of claims 1-9.

11. A heating module for an infusion pump, characterized in that: It comprises a heating film arranged on the outer surface of the infusion set, and the heating film is used to heat the infusion set; wherein the heating film is a polyimide heating film.

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