Portable wearable directional medicine penetrating instrument circuit

Abstract

The present application relates to the technical field of medical apparatus and instruments, in particular to a portable and wearable directional medicine penetrating instrument circuit, which comprises a main control circuit, a lithium battery boost power supply system working power supply circuit, a lithium battery boost power supply pulse output power supply circuit, a display lamp circuit, a prompt sound circuit, an output control circuit, a lithium battery charging management circuit, a lithium battery electric quantity detection circuit part and a switch function key, the electrode in the output control circuit is used to contact the human body for skin resistance value detection during measurement, the directional medicine penetrating function is completed after the device is worn at the use position through the switch function key setting, the use restriction of the existing directional medicine penetrating instrument, such as large size, heavy weight, not easy to move and the need of external network power, is solved, and convenience is provided for operators and users.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a portable wearable targeted drug delivery device circuit. Background Technology

[0002] Currently, most targeted drug delivery systems are used clinically in desktop or cart-based formats. These desktop and cart-based devices have several drawbacks: 1. They are relatively large, requiring significant space in clinical settings. 2. They are heavy, difficult to move, inconvenient for multi-department use in hospitals, and prone to damage during transport. 3. They have limited operating conditions, requiring a stable external power supply or grounding connection, which is inconvenient for clinical work. 4. They have high manufacturing costs, including labor, materials, storage, and transportation. Summary of the Invention

[0003] The purpose of this invention is to provide a portable wearable targeted drug delivery device circuit that is powered by a lithium battery. After simply wearing the device in the desired position and setting the function, the targeted drug delivery function can be completed, thus solving the problem of inconvenience in the use of existing targeted drug delivery devices.

[0004] To achieve the above objectives, the present invention provides a portable wearable targeted drug delivery device circuit, including a main control circuit, a lithium battery boost power supply system working power supply circuit, a lithium battery boost power supply pulse output power supply circuit, an indicator light circuit, an alarm sound circuit, an output control circuit, a lithium battery charging management circuit, a lithium battery power detection circuit, and a switch function button. The lithium battery boost power supply system working power supply circuit, the lithium battery boost power supply pulse output power supply circuit, the indicator light circuit, the alarm sound circuit, the output control circuit, the lithium battery charging management circuit, the lithium battery power detection circuit, and the switch function button are respectively electrically connected to the outputs of each pin of the main control circuit.

[0005] The main control circuit includes a microcontroller U2 and a power filter capacitor C2. One end of the power filter capacitor C2 is connected to pin 10 of the microcontroller U2, and the other end is connected to a 5V power supply.

[0006] The lithium battery boost power supply system includes an inductor L2, a Schottky diode D8, a power conversion control chip U3, resistors R12 and R13, and capacitors C5, C6, and C7. One end of capacitor C5 is connected to the lithium battery power supply VCC, and the other end is connected to GND. One end of inductor L2 is connected to pins 4 and 5 of the power conversion control chip U3, and the other end is connected to pin 1 of the power conversion control chip U3. The output of inductor L2 is connected to the Schottky diode D8 and outputs to the 5V power supply. Capacitor C7 is connected in series with resistor R13 and then in parallel with resistor R12 and capacitor C6. One end of the parallel circuit is connected to the 5V power supply, and the other end is connected to pin 3 of chip U3.

[0007] The lithium battery boost power supply pulse output circuit includes an inductor L1, a Schottky diode D3, a power conversion control chip U1, resistors R6 and R7, and capacitors C1, C3, and C4. The structure of the lithium battery boost power supply pulse output circuit is similar to that of the lithium battery boost power supply system working power supply circuit. One end of capacitor C1 is connected to the lithium battery power supply VCC, and the other end is connected to GND. One end of inductor L1 is connected to pins 4 and 5 of the power conversion control chip U1, and the other end is connected to pin 1 of the power conversion control chip U1. The output of inductor L1 is connected to the Schottky diode D3 and outputs to the 12V power supply. Capacitor C4 is connected in series with resistor R7 and then in parallel with resistor R6 and capacitor C3. One end of the parallel circuit is connected to the 12V power supply, and the other end is connected to pin 3 of chip U1.

[0008] The indicator light circuit includes LEDs D4, D5, D6, D7, and D9, and resistors R8, R9, R10, R11, R15, and R16. LED D4 is connected in series with resistor R8 and then connected to pin 1 of microcontroller U2. LED D5 is connected in series with R9 and then connected to pin 17 of microcontroller U2. LED D6 is connected in series with R10 and then connected to pin 20 of microcontroller U2. LED D7 is connected in series with R11 and then connected to pin 19 of microcontroller U2. LED D9 is a red-green dual-color LED and is connected in series with resistor R15 and then connected to pin 2 of microcontroller U2, and in series with R16 and then connected to pin 3 of microcontroller U2.

[0009] The prompt sound circuit includes a passive buzzer LS1, a driver transistor Q4, and a resistor R20. The emitter of the driver transistor Q4 is connected to GND, the collector (C) is connected to the passive buzzer LS1, and the base (B) is connected in series with the resistor R20 and then connected to pin 4 of the microcontroller U2.

[0010] The output control circuit includes a constant current control circuit, a skin resistance detection circuit, and an anti-static circuit. The constant current control circuit is connected to pin 5 of the microcontroller U2, the skin resistance detection circuit is connected to pin 16 of the microcontroller U2, and the anti-static circuit is connected to the P2 electrode of the skin resistance detection circuit.

[0011] The lithium battery charging management circuit includes a Type-C interface J2, a diode D10, a current-limiting resistor R22, a charging current control resistor R25, a filter capacitor C8, a filter capacitor C9, and a charging management chip U5.

[0012] The input terminal of diode D10 is connected to the VBUS terminal of the Type-C interface J2 and pin 4 of the charging management chip U5, respectively. One end of the filter capacitor C8 is connected to pin 1 of the charging management chip U5, and the other end is connected to GND. The current limiting resistor R22 is connected to pin 1 of the charging management chip U5. The charging current control resistor R25 is connected to pin 5 of the charging management chip U5. The filter capacitor C9 is connected to pin 3 of the charging management chip U5.

[0013] The lithium battery power detection circuit and the switch function button are connected to the microcontroller U2 via pins 6 and 13, respectively.

[0014] This invention provides a portable wearable targeted drug delivery device circuit, including a main control circuit, a lithium battery boost power supply system working power supply circuit, a lithium battery boost power supply pulse output power supply circuit, an indicator light circuit, an alarm sound circuit, an output control circuit, a lithium battery charging management circuit, a lithium battery power detection circuit, and a switch function button. During measurement, the electrodes in the output control circuit contact the human body to detect skin resistance. By setting the switch function button and wearing the device in the desired position, the targeted drug delivery function is completed. This invention solves the limitations of existing targeted drug delivery devices, such as large size, heavy weight, difficulty in movement, and the need for external power, providing convenience for operators and users. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the connection structure of the main control circuit of the present invention.

[0017] Figure 2 This is a schematic diagram of the connection structure of the working power supply circuit of the lithium battery boost power supply system of the present invention.

[0018] Figure 3 This is a schematic diagram of the connection structure of the lithium battery boost power supply pulse output power circuit of the present invention.

[0019] Figure 4This is a schematic diagram of the connection structure of the indicator light circuit of the present invention.

[0020] Figure 5 This is a schematic diagram of the connection structure of the prompt sound circuit of the present invention.

[0021] Figure 6 This is a schematic diagram of the connection structure of the output control circuit of the present invention.

[0022] Figure 7 This is a schematic diagram of the connection structure of the lithium battery charging management circuit of the present invention.

[0023] Figure 8 This is a schematic diagram of the connection structure between the lithium battery power detection circuit and the switch function button of the present invention. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] Please see Figures 1 to 8 This invention proposes a portable wearable targeted drug delivery device circuit, including a main control circuit, a lithium battery boost power supply system working power supply circuit, a lithium battery boost power supply pulse output power supply circuit, an indicator light circuit, an alarm sound circuit, an output control circuit, a lithium battery charging management circuit, a lithium battery power detection circuit, and a switch function button.

[0026] The following explanation is based on specific chip types and component specifications:

[0027] 1. Main control circuit, such as Figure 1 As shown, it mainly consists of a microcontroller U2-STC8G1K08 and a power supply filter capacitor C2-100nF. The microcontroller U2 has serial communication, ADC analog-to-digital signal processing, logic high / low level input detection, and logic high / low level output capabilities. The power supply filter capacitor C2 can filter out the ripple in the power supply of the control system, providing a clean and stable power supply for the system.

[0028] 2. Lithium battery boost power supply system operating power circuit

[0029] Please see Figure 2 The lithium battery power supply VCC uses a boost circuit to raise the voltage to 5V, providing a stable power supply for the system.

[0030] C5-100nF is the input power supply filter capacitor, L2-3.3uH inductor is for energy storage and release, D8-MBR0530 is a Schottky diode, U3-TPS61040 is the power conversion control chip, resistors R12-620KΩ and R13-200KΩ form a voltage feedback loop, adjusting the values ​​of resistors R12 and R13 adjusts the output voltage. C6-4.7pF is a feedforward capacitor, which reduces output voltage ripple. C7-1uF is the output voltage filter capacitor.

[0031] 3. Lithium battery boost power supply pulse output circuit

[0032] Please see Figure 3 The lithium battery power supply VCC is boosted to 12V through a boost circuit to provide the operating voltage for the electrical pulse output.

[0033] C1-4.7uF is the input capacitor, which filters out low-frequency ripple and stores energy. L1-3.3uH inductor functions as both energy storage and release. D3-MBR0530 is a Schottky diode. U1-TPS61040 is the power conversion control chip. Resistors R6-1.8MΩ and R7-200KΩ form a voltage feedback loop; adjusting the values ​​of resistors R6 and R7 adjusts the output voltage. C3-4.7pF is the feedforward capacitor, which reduces output voltage ripple. C4-4.7uF is the output voltage filter capacitor, which also stores energy.

[0034] 4. Indicator light circuit

[0035] Please see Figure 4 The battery level display LED circuit consists of four LEDs (D4, D5, D6, and D7), with resistors R8, R9, R10, and R11 acting as current-limiting resistors. The microcontroller controls the high and low levels of the LED3, LED4, LED5, and LED6 networks to display different battery levels. The status indicator D9 is a red-green dual-color LED; combinations of these two colors can display three different colors: red, green, and orange. Resistors R15 and R16 are also current-limiting resistors. The microcontroller controls the LED1 and LED2 networks to indicate different statuses.

[0036] 5. Alarm Tone Circuit

[0037] Please see Figure 5 The prompt tone is composed of a passive buzzer LS1, a driver transistor Q4-SS8050, and a current-limiting resistor R20-100Ω. The microcontroller control system controls the BEEP interface and outputs a PWM signal with a frequency of 2700-4000Hz, which can make Q4 switch on and off repeatedly, and LS1 switch quickly between on and off, thus generating a prompt tone.

[0038] 6. Output control circuit

[0039] Please see Figure 6 The output control circuit mainly consists of a constant current control circuit, a skin resistance detection circuit, and an anti-static circuit. Interface description: PWM is the square wave signal used by the microcontroller to control the output switch; OutPutADC is the skin resistance detection point, connected to the microcontroller's analog-to-digital converter; P2 is the positive terminal for contacting human skin; and P3 is the negative terminal for contacting human skin.

[0040] The constant current control circuit consists of resistor R14 (1KΩ), U4A-LM358, resistor R18 (100Ω), resistor Q3 (SS8050), and resistor R21 (33KΩ). Adjusting the PWM high / low level changes controls whether Q3 is turned on or off, and adjusting R21 controls the magnitude of the constant current.

[0041] The skin resistance detection circuit consists of R17-100KΩ and R19-150KΩ. When electrodes P2 and P3 are in contact with the human body, transistor Q3 is turned on to put the circuit into operation. At this time, the voltage value of OutputADC is detected, and the voltage value between electrodes P2 and P3 is calculated through analog-to-digital converter. Then, the resistance value between electrodes P2 and P3 is calculated, which is the resistance value between the electrodes in contact with the skin.

[0042] The anti-static circuit consists of current-limiting resistors R23-10Ω and R24-10Ω, transient voltage suppressor diodes D12-SMF15CA, D13-SMF15C, and D15-SMF15CA. When P2 comes into contact with a positive static charge, a large amount of positive charge discharges to GND through D11, while a small amount of positive charge flows to the 12V power supply through R23. Due to the current-limiting effect of R23, the circuit effectively stabilizes the power supply while absorbing the positive static charge. When P2 comes into contact with a negative static charge, i.e., P2's potential is lower than GND and 12V, current flows out from GND and 12V, preventing damage to the circuit. When P3 comes into contact with a positive static charge, P3's potential is higher than 12V and GND, and the instantaneous high-voltage current is absorbed by GND and 12V through D12 and D13. When P3 comes into contact with a negative charge, the potential of P3 is lower than that of 12V and GND. Current flows from GND and 12V through D12 and D13 to P3, without causing damage to the circuit.

[0043] 7. Lithium battery charging management circuit

[0044] Please see Figure 7 The charging management circuit consists of a Type-C interface J2, a diode D10, a current-limiting resistor R22, a charging current control resistor R25, a filter capacitor C8, a filter capacitor C9, and a charging management chip U5-XC5071.

[0045] When the power adapter is connected to the J2 interface, if the system is not powered on, current will flow through D10 to power the system, and the system will automatically power on. If U5 is in charging mode, pin 1 of U5 will output a low level. The microcontroller determines whether it is charging by detecting the high or low level of the output and displays an LED indicator. Adjusting the resistance of R25 can adjust the maximum charging current. When the resistance of R25 is 2KΩ, the maximum charging current is 500mA.

[0046] 8. Switch function button, lithium battery power detection circuit

[0047] Please see Figure 8 Interface and network specifications: P1 is the lithium battery power supply interface. P1-1 is connected to the positive terminal of the lithium battery and P1-2 is connected to the negative terminal. LionADC is connected to the microcontroller's ADC analog-to-digital converter. KEY is connected to the microcontroller's weak pull-up I / O port. PWR is connected to the microcontroller's push-pull output I / O port. VCC is the lithium battery power supply after connection. GND is connected to the negative terminal of the lithium battery and the system ground.

[0048] The switch button function works as follows: When the power is off, pressing switch S1 sends current through R2, D2, and S1 to ground. This pulls the gate of Q1-PMOS low, putting Q1 on and allowing the lithium battery to power the system. After the microcontroller starts, it controls PWR to output a high level, turning on Q2-NPN transistor and keeping the gate of Q1-PMOS low. When the switch button is released, the gate of Q1 is latched, remaining low and continuously providing power to the system, thus successfully powering on.

[0049] When the power is on, press and hold switch S1. Since KEY is set to weak pull-up mode, button S1 is at a high level before being pressed. After button S1 is pressed, diode D1 conducts unidirectionally, setting KEY to a low level. At this time, the microcontroller reads the KEY state and determines that after button S1 has been pressed for a certain period of time, it sets the PWR interface to a low level and turns off transistor Q2. When the button is released, the gate of Q1-PMOS is at a high level, Q1 is in the off state, and no longer provides power to the system, thus the power off is successful.

[0050] Function Keys: When the device is powered on and key S1 is not pressed, KEY is set to a weak pull-up state and is at a high level. When key S1 is pressed, diode D1 conducts unidirectionally, and the KEY port is set to a low level. When key S1 is released, diode D1 is cut off, and KEY is reset to a high level. The microcontroller processes the corresponding key function by detecting the changes in the high and low levels of the KEY key.

[0051] Lithium battery power detection circuit: The lithium battery input terminal P1 is connected to the LionADC analog-to-digital converter of the microcontroller via R1-200KΩ. The analog-to-digital converter calculates and outputs the current lithium battery voltage, converting it into the current lithium battery power percentage. R1 mainly serves to transmit voltage and limit current.

[0052] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A portable wearable targeted drug delivery device circuit, characterized in that, It includes a main control circuit, a lithium battery boost power supply system working power supply circuit, a lithium battery boost power supply pulse output power supply circuit, an indicator light circuit, an alarm sound circuit, an output control circuit, a lithium battery charging management circuit, a lithium battery power detection circuit, and a switch function button. The lithium battery boost power supply system working power supply circuit, the lithium battery boost power supply pulse output power supply circuit, the indicator light circuit, the alarm sound circuit, the output control circuit, the lithium battery charging management circuit, the lithium battery power detection circuit, and the switch function button are respectively electrically connected to the output of each pin of the main control circuit. The main control circuit includes a microcontroller U2 and a power filter capacitor C2. One end of the power filter capacitor C2 is connected to pin 10 of the microcontroller U2, and the other end is connected to a 5V power supply. The lithium battery boost power supply system's operating power circuit includes an inductor L2, a Schottky diode D8, a power conversion control chip U3 (specifically using a TPS61040), resistors R12 and R13, and capacitors C5, C6, and C7. One end of capacitor C5 is connected to the lithium battery power supply VCC, and the other end is connected to GND. One end of inductor L2 is connected to pins 4 and 5 of the power conversion control chip U3, and the other end is connected to pin 1 of the power conversion control chip U3. The output of inductor L2 is connected to the Schottky diode D8 and outputs to the 5V power supply. Capacitor C7 is connected in series with resistor R13 and then in parallel with resistor R12 and capacitor C6. One end of the parallel circuit is connected to the 5V power supply, and the other end is connected to pin 3 of chip U3. The lithium battery boost power supply pulse output circuit includes an inductor L1, a Schottky diode D3, a power conversion control chip U1, resistors R6 and R7, and capacitors C1, C3, and C4. The structure of the lithium battery boost power supply pulse output circuit is similar to that of the lithium battery boost power supply system operating power supply circuit. One end of capacitor C1 is connected to the lithium battery power supply VCC, and the other end is connected to GND. One end of inductor L1 is connected to pins 4 and 5 of the power conversion control chip U1, and the other end is connected to pin 1 of the power conversion control chip U1. The output of inductor L1 is connected to the Schottky diode D3 and outputs to a 12V power supply. Capacitor C4 is connected in series with resistor R7 and then in parallel with resistor R6 and capacitor C3. One end of the parallel circuit is connected to the 12V power supply, and the other end is connected to pin 3 of chip U1. The prompt sound circuit includes a passive buzzer LS1, a driver transistor Q4, and a resistor R20. The emitter of the driver transistor Q4 is connected to GND, the collector C is connected to the passive buzzer LS1, and the base B is connected in series with the resistor R20 and then connected to pin 4 of the microcontroller U2. The output control circuit includes a constant current control circuit, a skin resistance detection circuit, and an anti-static circuit. The constant current control circuit is connected to pin 5 of the microcontroller U2, the skin resistance detection circuit is connected to pin 16 of the microcontroller U2, and the anti-static circuit is connected to the P2 electrode of the skin resistance detection circuit.

2. The portable wearable targeted drug delivery device circuit as described in claim 1, characterized in that, The indicator light circuit includes LEDs D4, D5, D6, D7, and D9, and resistors R8, R9, R10, R11, R15, and R16. LED D4 is connected in series with resistor R8 and then connected to pin 1 of microcontroller U2. D5 is connected in series with R9 and then connected to pin 17 of microcontroller U2. D6 is connected in series with R10 and then connected to pin 20 of microcontroller U2. D7 is connected in series with R11 and then connected to pin 19 of microcontroller U2. LED D9 is a red-green dual-color LED, which is connected in series with resistor R15 and then connected to pin 2 of microcontroller U2, and in series with R16 and then connected to pin 3 of microcontroller U2.

3. The portable wearable targeted drug delivery device circuit as described in claim 1, characterized in that, The lithium battery charging management circuit includes a Type-C interface J2, a diode D10, a current-limiting resistor R22, a charging current control resistor R25, a filter capacitor C8, a filter capacitor C9, and a charging management chip U5. The input terminal of diode D10 is connected to the VBUS terminal of the Type-C interface J2 and pin 4 of the charging management chip U5, respectively. One end of the filter capacitor C8 is connected to pin 1 of the charging management chip U5, and the other end is connected to GND. The current limiting resistor R22 is connected to pin 1 of the charging management chip U5. The charging current control resistor R25 is connected to pin 5 of the charging management chip U5. The filter capacitor C9 is connected to pin 3 of the charging management chip U5.

4. The portable wearable targeted drug delivery device circuit as described in claim 1, characterized in that, The lithium battery power detection circuit and the switch function button are connected to the microcontroller U2 via pins 6 and 13, respectively.

Images