Coagulation hemostasis electric coagulation equipment

Abstract

The invention discloses coagulation hemostasis electric coagulation equipment, and relates to the field of circuits. The equipment comprises a host and electrocoagulation tweezers connected with the host, wherein the host comprises a voltage source module, a driving module, a high-frequency inverter circuit and a resonance filtering module; the input end of the high-frequency inverter circuit is connected with the voltage source module, the driving end of the high-frequency inverter circuit is connected with the driving module, the voltage source module is used for outputting a target direct-current voltage, and the driving module is used for outputting a driving signal; the output end of the high-frequency inverter circuit is connected with the input end of the resonant filtering module, and the output end of the resonant filtering module is connected with two electrodes of the electrocoagulation tweezers; the high-frequency inverter circuit is a push-pull inverter circuit, the high-frequency inverter circuit is used for converting the target direct-current voltage into initial alternating-current voltage, and the resonant filtering module is used for filtering the initial alternating-current voltage and outputting the target alternating-current voltage to the electrocoagulation tweezers. The energy loss of AC-DC conversion can be reduced, and the working time and efficiency of the hemostatic electric coagulation equipment can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuits, and in particular to a hemostatic electrocoagulation device. Background Art

[0002] The hemostatic electrocoagulation device usually consists of a main unit and electrocoagulation forceps. The main unit generates a high-frequency current and transmits it to the electrocoagulation forceps. The electrocoagulation forceps contact the affected area and use the thermal effect generated when the high-frequency current passes through the tissue to coagulate and stop bleeding in the biological tissue.

[0003] When facing scenes such as disaster sites, the process of using the electrocoagulation principle to stop bleeding should extend the use time of the electrocoagulation device as much as possible and increase the use intensity of the electrocoagulation forceps. Therefore, a solution to reduce the energy loss of the electrocoagulation device is urgently needed to meet the needs of high-power and long-term coagulation and hemostasis operations. Summary of the invention

[0004] In view of this, the present application provides a hemostatic electrocoagulation device, the main purpose of which is to reduce the energy loss of the hemostatic electrocoagulation device.

[0005] The present invention provides a hemostatic electrocoagulation device, which includes a host and electrocoagulation tweezers connected to the host, wherein the host includes: a voltage source module, a drive module, a high-frequency inverter circuit and a resonance filter module;

[0006] The input end of the high-frequency inverter circuit is connected to the voltage source module, the driving end of the high-frequency inverter circuit is connected to the driving module, the voltage source module is used to output a target DC voltage, and the driving module is used to output a driving signal;

[0007] The output end of the high-frequency inverter circuit is connected to the input end of the resonance filter module, and the output end of the resonance filter module is connected to the two electrodes of the electrocoagulation forceps;

[0008] The high-frequency inverter circuit is a push-pull inverter circuit, which is used to convert the target DC voltage into an initial AC voltage. The resonant filter module is used to filter the initial AC voltage and output the target AC voltage to the electrocoagulation forceps.

[0009] Optionally, the driving signal output by the driving module includes a first driving signal and a second driving signal, and the first driving signal and the second driving signal have opposite levels;

[0010] The high-frequency inverter circuit comprises: a transformer, a first field effect transistor and a second field effect transistor, wherein the first field effect transistor and the second field effect transistor are N-channel type;

[0011] The first end of the primary of the transformer is connected to the source of the first field effect transistor, the drain of the first field effect transistor is grounded, and the gate of the first field effect transistor is used to input the first driving signal;

[0012] The second end of the transformer primary is connected to the source of the second field effect transistor, the drain of the second field effect transistor is grounded, and the gate of the second field effect transistor is used to input the second driving signal;

[0013] The tap end of the primary side of the transformer is connected to the voltage source module, and the secondary side of the transformer is connected to the resonance filter module.

[0014] Optionally, the voltage source module includes a voltage conversion circuit, and the voltage conversion circuit is used to convert the battery voltage into a target DC voltage;

[0015] The voltage conversion circuit includes a voltage control circuit, a voltage regulation circuit and a feedback calculation circuit, wherein the input end of the voltage control circuit is connected to the output end of the feedback calculation circuit, the output end of the voltage control circuit is connected to the input end of the voltage regulation circuit, and the output end of the voltage regulation circuit is connected to the input end of the feedback calculation circuit;

[0016] The voltage control circuit includes a voltage control unit, a third field effect transistor and a rectifier circuit, wherein the input end of the voltage control unit is used to input a voltage feedback signal, the output end of the voltage control unit is connected to the gate of the third field effect transistor, the drain of the third field effect transistor is connected to the battery voltage, the source of the third field effect transistor is connected to the input end of the rectifier circuit, and the output end of the rectifier circuit is used to output the target DC voltage;

[0017] The voltage regulating circuit comprises a current input terminal and a voltage input terminal, wherein the current input terminal is used to input the output current of the voltage control circuit, and the voltage input terminal is used to input the target DC voltage. The voltage regulating circuit is used to output a voltage regulating signal based on the output current of the voltage control circuit and the target DC voltage;

[0018] The feedback calculation circuit includes a reference voltage input terminal, an adjustment voltage input terminal and a control voltage input terminal, and is used to calculate the voltage feedback signal based on the reference voltage signal input by the reference voltage input terminal, the voltage adjustment signal input by the adjustment voltage input terminal and the voltage control signal input by the control voltage input terminal.

[0019] Optionally, the voltage regulating circuit includes a differential operational amplifier, an amplifier circuit, a half-wave rectifier circuit and a first adder;

[0020] The input end of the differential operational amplifier is the current input end, the output end of the differential operational amplifier is connected to the input end of the amplifier circuit, the output end of the amplifier circuit is connected to the input end of the half-wave rectifier circuit, the output end of the half-wave rectifier circuit and the voltage input end are both connected to the input end of the first adder, and the output end of the first adder outputs the voltage regulation signal.

[0021] Optionally, the feedback calculation circuit includes a second adder, the reference voltage input terminal, the adjustment voltage input terminal and the control voltage input terminal are all connected to the input terminal of the second adder, and the output terminal of the second adder outputs the voltage feedback signal.

[0022] Optionally, the device further includes a main controller and a digital-to-analog conversion module, wherein an input end of the digital-to-analog conversion module is connected to the main controller, and an output end of the digital-to-analog conversion module is connected to the voltage conversion circuit;

[0023] The main controller is used to output the voltage control signal to the digital-to-analog conversion module, and the voltage control signal is input to the voltage conversion circuit after digital-to-analog conversion.

[0024] Optionally, the input end of the driving module is connected to the main controller, and the main controller is used to input a waveform control signal to the driving module;

[0025] The driving module includes a first output end and a second output end, the first output end is connected to the gate of the first field effect transistor, the second output end is connected to the gate of the second field effect transistor, the first output end is used to output a first driving signal, and the second output end is used to output a second driving signal.

[0026] Optionally, the device also includes a conversion voltage sampling module, the input end of the conversion voltage sampling module is connected to the output end of the voltage conversion circuit to collect the target DC voltage output by the voltage conversion circuit to obtain a target DC voltage signal, and the output end of the conversion voltage sampling module is connected to the main controller to input the target DC voltage signal into the main controller.

[0027] Optionally, the device further includes a voltage transformer, an output voltage sampling module, a current transformer, and an output current sampling module;

[0028] The primary side of the voltage transformer is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output voltage sampling module. The output end of the output voltage sampling module is connected to the main controller. The output voltage sampling module is used to collect the voltage output by the resonance filter module through the voltage transformer to obtain an output voltage signal, and input the output voltage signal to the main controller;

[0029] The primary side of the current transformer is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output current sampling module. The output end of the output current sampling module is connected to the main controller. The output current sampling module is used to collect the current output by the resonance filter module through the current transformer to obtain an output current signal, and input the output current signal to the main controller.

[0030] Optionally, the main controller is used to generate the voltage control signal according to the target DC voltage signal, the output voltage signal and the output current signal.

[0031] The voltage source module in the hemostatic electrocoagulation device provided by the present application provides a target DC voltage for inversion. Under the drive of the driving signal output by the driving module, the target DC voltage provided by the voltage source module is converted into high-frequency AC power through a high-frequency inverter circuit, and then filtered by a resonant filter module and output to the electrocoagulation forceps to achieve the hemostatic function. Among them, the present application adopts a push-pull high-frequency inverter circuit in the AC-DC conversion process, which can improve the working efficiency compared with the ordinary high-frequency inverter circuit, and is beneficial to the magnetic balance of the transformer, reducing the energy loss of the transformer, thereby improving the AC-DC energy conversion rate, and improving the working time and efficiency of the hemostatic electrocoagulation device.

[0032] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 A schematic structural diagram of a hemostatic electrocoagulation device provided by an embodiment of the present invention is shown;

[0035] Figure 2 A schematic structural diagram of an AC-DC conversion circuit provided by an embodiment of the present invention is shown;

[0036] Figure 3 A schematic diagram of the structure of a voltage conversion circuit provided by an embodiment of the present invention is shown;

[0037] Figure 4 A schematic structural diagram of another hemostatic electrocoagulation device provided in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0039] In one embodiment, Figure 1 As shown, a structural schematic diagram of a hemostatic electrocoagulation device is provided, including a host and electrocoagulation forceps connected to the host. Among them, the host includes a voltage source module, a driving module, a high-frequency inverter circuit and a resonance filter module. The input end of the high-frequency inverter circuit is connected to the voltage source module, and the driving end of the high-frequency inverter circuit is connected to the driving module. The voltage source module is used to output a target DC voltage, and the driving module is used to output a driving signal; the output end of the high-frequency inverter circuit is connected to the input end of the resonance filter module, and the output end of the resonance filter module is connected to the two electrodes of the electrocoagulation forceps. The high-frequency inverter circuit is a push-pull inverter circuit, and the high-frequency inverter circuit is used to convert the target DC voltage into an initial AC voltage, and the resonance filter module is used to filter the initial AC voltage and output the target AC voltage to the electrocoagulation forceps.

[0040] In the above embodiment, the hemostatic electrocoagulation device uses direct current provided by a battery, and the tip of the electrocoagulation forceps needs to release high-frequency alternating current. Therefore, the voltage source module can be a battery for the hemostatic electrocoagulation device, or a module that performs DC-DC conversion on the battery voltage to obtain the required direct current voltage. The voltage source module provides a direct current voltage for inversion. Under the drive of the driving signal, the high-frequency inverter circuit converts the direct current voltage provided by the voltage source module into high-frequency alternating current, which is then filtered by the resonant filter module and output to the electrocoagulation forceps to achieve the hemostatic function.

[0041] Energy loss will be generated in the AC-DC conversion process. In order to reduce energy loss and increase the working time of the hemostatic electrocoagulation equipment, this embodiment adopts a push-pull high-frequency inverter circuit in the AC-DC conversion. Compared with the ordinary high-frequency inverter circuit, it can improve the working efficiency, and is beneficial to the magnetic balance of the transformer, reducing the energy loss of the transformer, and thus improving the AC-DC energy conversion rate.

[0042] In one embodiment, because the hemostatic electrocoagulation device proposed in the present application adopts a push-pull high-frequency inverter circuit, the driving module needs to input two driving signals to the high-frequency inverter circuit. That is, the driving signal output by the driving module includes a first driving signal and a second driving signal, wherein the levels of the first driving signal and the second driving signal are opposite, and under the drive of the first driving signal and the second driving signal, a push-pull high-frequency inverter is realized. The structure of the high-frequency inverter circuit is as follows: Figure 2As shown, it includes a transformer T1, a first field effect transistor Q1, and a second field effect transistor Q2. Among them, the first field effect transistor Q1 and the second field effect transistor Q2 are both N-channel type. The first end (pin 1) of the primary of the transformer T1 is connected to the source of the first field effect transistor Q1, the drain of the first field effect transistor Q1 is grounded, and the gate of the first field effect transistor Q1 is used to input the first drive signal. The second end (pin 3) of the primary of the transformer T1 is connected to the source of the second field effect transistor Q2, the drain of the second field effect transistor Q2 is grounded, and the gate of the second field effect transistor Q2 is used to input the second drive signal. The tap end (pin 2) of the primary of the transformer T1 is connected to the voltage source module, and the secondary of the transformer T1 is connected to the resonant filter module.

[0043] The high-frequency inverter circuit also includes a number of resistors, capacitors and diodes. Specifically, the tap end (pin 2) of the primary of the transformer T1 is connected to the port V-ADJ through the resistor R1, wherein the port V-ADJ is the output port of the voltage source module, and the target DC voltage is input to the high-frequency inverter circuit through the port V-ADJ. The source of the first field effect tube Q1 is connected to the input end of the capacitor C2, the output end of the capacitor C2 is connected to the input end of the resistor R2, the output end of the resistor R2 is grounded, and the diode D1 is connected in parallel to both ends of the resistor R2. The resistor R3 is connected to the gate and drain of the first field effect tube Q1, and the capacitor C1 is connected to the gate and drain of the first field effect tube Q1. Correspondingly, the source of the second field effect tube Q2 is connected to the input end of the capacitor C4, the output end of the capacitor C4 is connected to the input end of the resistor R5, the output end of the resistor R5 is grounded, and the diode D2 is connected in parallel to both ends of the resistor R5. The resistor R4 is connected to the gate and drain of the second field effect tube Q2, and the capacitor C3 is connected to the gate and drain of the second field effect tube Q2.

[0044] The driving module outputs two driving signals. Accordingly, the driving module includes two output terminals, wherein the port SW1 connected to the gate of the first field effect tube Q1 is connected to the first output terminal of the driving module, and the first driving signal can be input to the high-frequency inverter circuit through the port SW1. Correspondingly, the port SW2 connected to the gate of the second field effect tube Q2 is connected to the second output terminal of the driving module, and the second driving signal can be input to the high-frequency inverter circuit through the port SW2. When the first driving signal is at a high level, the second driving signal is at a low level, the first field effect tube Q1 is turned on, the current of the primary of the transformer T1 flows in from pin 2 and flows out from pin 1, and accordingly, the current of the secondary of the transformer T1 flows in from pin 4 and flows out from pin 5. Conversely, when the second driving signal is at a high level, the first driving signal is at a low level, the second field effect tube Q2 is turned on, the current of the primary of the transformer T1 flows in from pin 2 and flows out from pin 3, and accordingly, the current of the secondary of the transformer T1 flows in from pin 5 and flows out from pin 4. Thus, an oscillation signal is formed, and the DC signal is converted into an AC signal, that is, the initial AC voltage is obtained.

[0045] After the high-frequency inverter circuit outputs the initial AC voltage, the initial AC voltage is input into the resonant filter module for processing, wherein the capacitor C5, capacitor C6 and inductor L2 of the resonant filter module are connected in parallel at both ends of the secondary of the transformer T1, capacitor C7 and capacitor C8 are connected in parallel, one connection point of capacitor C7 and capacitor C8 is connected to one end of the secondary of the transformer T1, and the other connection point is connected to the input end of the inductor L3, the output end of the inductor L3 is connected to the port BIP-A through the capacitor C9, and the other end of the secondary of the transformer T1 is connected to the port BIP-B, wherein the port BIP-A and the port BIP-B are used to connect to the two electrodes of the electrocoagulation tweezers.

[0046] After the initial AC voltage is filtered by the resonant filter module, a sinusoidal AC voltage, i.e., the target AC voltage, is obtained. The target AC voltage is then input to the two electrodes of the electrocoagulation tweezers, and high-frequency AC is released through the tweezers tips to achieve the coagulation and hemostasis function of biological tissues.

[0047] In the above embodiment, the push-pull high-frequency inverter circuit is driven by two drive signals, and the two drive signals drive the field effect tube to act alternately. Compared with the method of using only one signal to drive, the working efficiency of the high-frequency inverter circuit is improved, and the use of two field effect tubes to drive has greater power. At the same time, compared with the single-sided drive, the push-pull method makes the magnetic balance of the transformer T1 better. If the magnetic balance of the transformer is not good, it will lead to greater energy consumption. Therefore, the use of the push-pull method can reduce the energy loss of the transformer T1. Furthermore, the energy loss of the AC-DC conversion of the hemostatic electrocoagulation equipment can be improved by the push-pull high-frequency inverter circuit, thereby increasing the working time.

[0048] In one embodiment, the DC voltage provided by the voltage source module to the high-frequency inverter circuit may be fixed or adjustable. In this embodiment, an adjustable DC voltage is provided. Specifically, the voltage source module includes a voltage conversion circuit, which is used to convert the battery voltage into a target DC voltage. Figure 3 As shown, the voltage conversion circuit includes a voltage control circuit, a voltage regulation circuit and a feedback calculation circuit. The input end of the voltage control circuit is connected to the output end of the feedback calculation circuit, the output end of the voltage control circuit is connected to the input end of the voltage regulation circuit, and the output end of the voltage regulation circuit is connected to the input end of the feedback calculation circuit.

[0049] Specifically, Figure 3 As shown in (A), the voltage control circuit includes a voltage control unit U1, a third field effect transistor Q3 and a rectifier circuit. Among them, the input terminal FB of the voltage control power supply U1 is used to input a voltage feedback signal, and the output terminal PGATE of the voltage control unit U1 is connected to the gate of the third field effect transistor Q3 through a resistor R12. The drain of the third field effect transistor Q3 is connected to the battery voltage through a resistor R10. In this embodiment, the battery voltage is 24 volts. The source of the third field effect transistor Q3 is connected to the input terminal of the rectifier circuit, and the output terminal of the rectifier circuit is used to output the target DC voltage, wherein the third field effect transistor Q3 is a P-channel type.

[0050] In one embodiment, the enable terminal RT of the voltage control unit U1 is also connected to the switch control signal through the transistor Q4. Specifically, the base of the transistor Q4 is connected to the switch control port ON / OFF through the resistor R7, and the base is also connected to the input end of the resistor R8 and the input end of the capacitor C13. The output end of the resistor R8 and the output end of the capacitor C13 are grounded. The emitter of the transistor Q4 is grounded, and the collector is connected to the battery voltage through the resistor R6. The collector is also connected to the enable terminal RT of the voltage control unit U1. When the switch control signal input to the switch control port ON / OFF is at a high level, the transistor Q4 is turned on, the enable terminal RT of the voltage control unit U1 is at a low level, and the voltage control unit U1 cannot work. On the contrary, when the switch control signal is at a ground level, the transistor Q4 is not turned on, the enable terminal RT of the voltage control unit UI is at a high level, and the voltage control unit U1 works.

[0051] The voltage control unit U1 can use a DC-DC chip for converting a DC voltage. The voltage control circuit also includes a number of resistors and capacitors. Specifically, the adjustment pin ADJ of the voltage control unit U1 is connected to the battery voltage through a resistor R9, and the capacitor C12 is connected in parallel to both ends of the resistor R9. The GND pin of the voltage control unit is grounded, the VIN pin is connected to the battery voltage, and the VCC pin is connected to the battery voltage through a capacitor C14. The input end of the resistor R10 is connected to the battery voltage, and the output end of the resistor R10 is connected to the current protection pin ISEN of the voltage control unit U1. One end of the capacitor C15 is connected to the drain of the third field effect tube Q3, and the other end is connected to one end of the resistor R11, and the other end of the resistor R11 is connected to the source of the third field effect tube Q3. The source of the third field effect tube Q3 is also connected to the cathode of the current storage diode D3, and the anode of the current storage diode D3 is grounded.

[0052] In one embodiment, in the rectifier circuit, after the resistor R13 and the capacitor C16 are connected in series, they are connected in parallel with the inductor L6. The connection point between the resistor R13 and the capacitor C16 is connected to the input terminal FB of the voltage control unit U1 through the capacitor C17. The input terminal of the inductor L6 is connected to the source of the third field effect transistor Q3. The output terminal of the inductor L6 is connected to the input terminal of the capacitor C18, the input terminal of the capacitor C19 and the input terminal of the resistor R14. The output terminal of the capacitor C18 and the output terminal of the capacitor C19 are grounded. The output terminal of the resistor R14 is connected to the output port V-ADJ of the voltage control circuit. The port V-ADJ is used to output the target DC voltage.

[0053] In one embodiment, the voltage regulating circuit includes a current input terminal and a voltage input terminal, wherein the current input terminal is used to input the output current of the voltage control circuit, and the voltage input terminal is used to input the target DC voltage. The voltage regulating circuit is used to output a voltage regulating signal based on the output current of the voltage control circuit and the target DC voltage. Specifically, Figure 3 As shown in (B), the voltage regulation circuit includes a differential operational amplifier U2, an amplifier circuit, a half-wave rectifier circuit and a first adder.

[0054] Among them, the non-inverting input terminal and the inverting input terminal of the differential operational amplifier U2 are current input terminals, which are respectively connected to the first current sampling port CURR+ and the second current sampling port CURR- provided at both ends of the resistor R14 in the voltage control circuit, and are used to collect the output current of the voltage control circuit. The output terminal of the differential operational amplifier U2 is connected to the input terminal of the amplifier circuit. The differential operational amplifier is used to perform differential operation on the current collected at the output terminal of the voltage control circuit and amplify it before inputting it into the amplifier circuit.

[0055] The amplifier circuit includes an integrated operational amplifier U3 and a number of resistors and capacitors, wherein the inverting input terminal of the integrated operational amplifier U3 is connected to the output terminal of the differential operational amplifier U2 through a resistor R17, and the non-inverting input terminal of the integrated operational amplifier U3 is grounded through a resistor R18. Resistor R19 and capacitor C20 are connected in parallel between the inverting input terminal and the output terminal of the integrated operational amplifier U2. The amplifier circuit is used to further amplify the signal output by the differential operational amplifier and then input it into the half-wave rectifier circuit.

[0056] The half-wave rectifier circuit includes an integrated operational amplifier U4 and a plurality of resistors, capacitors and diodes. The in-phase input terminal of the integrated operational amplifier U4 is grounded through a resistor R22, the inverting input terminal of the integrated operational amplifier U4 is connected to the output terminal of the amplifier circuit through a resistor R21, and the inverting input terminal is also connected to the voltage of the integrated operational amplifier through a resistor R20. The output terminal of the integrated operational amplifier U4 is connected to the anode of the diode D5, and the cathode of the diode D5 is connected to the first adder. The anode of the diode D4 is connected to the inverting input terminal of the integrated operational amplifier U4, and the cathode of the diode D4 is connected to the output terminal of the integrated operational amplifier U4. The resistor R23 and the capacitor C21 are connected in parallel, one of the parallel connection points is connected to the inverting input terminal of the integrated operational amplifier U4, and the other parallel connection point is connected to the cathode of the diode D5. The half-wave rectifier circuit is used to perform half-wave rectification on the current signal output by the method circuit, and then input it into the first adder.

[0057] The first adder includes an integrated operational amplifier U5, the in-phase input terminal of the integrated operational amplifier U5 is grounded through a resistor R26, and the inverting input terminal of the integrated operational amplifier U5 is connected to the output terminal of the half-wave rectifier circuit through a resistor R25. The inverting input terminal of the integrated operational amplifier U5 is also connected to the port V-ADJ through a resistor R24, and the port V-ADJ is the voltage output terminal of the voltage regulating circuit, and the target DC voltage is input to the first adder through the port V-ADJ. Resistor R27 and capacitor C22 are connected in parallel to the inverting input terminal and output terminal of the integrated operational amplifier U5, the output terminal of the integrated operational amplifier U5 is grounded through a capacitor C23, and the output terminal of the integrated operational amplifier U5 is also connected to the port TE-FB, and the port TE-FB is used to output a voltage regulation signal. The first adder is used to perform addition operation on the current signal and the voltage signal collected at the output terminal of the voltage control circuit, and the operation result is input to the second adder as a voltage regulation signal.

[0058] like Figure 3As shown in (C), the feedback calculation circuit includes a second adder, and the second adder includes an integrated operational amplifier U6. The in-phase input terminal of the integrated operational amplifier U6 is grounded through a resistor R31, and the inverting input terminal is connected to the port RE-FB through a resistor R28, connected to the port CO-FB through a resistor R29, and connected to the port TE-FB through a resistor R30. Among them, the port RE-FB is the reference voltage input terminal of the second adder, which is used to input a reference voltage signal to the second adder, the port CO-FB is the control voltage input terminal of the second adder, which is used to input a voltage control signal to the second adder, and the port TE-FB is the adjustment voltage input terminal of the second adder, which is used to input a voltage adjustment signal to the second adder. The anode of the diode D6 is connected to the inverting input terminal of the integrated operational amplifier U6, and the cathode of the diode D6 is connected to the output terminal of the integrated operational amplifier U6. The output terminal of the integrated operational amplifier U6 is also connected to the anode of the diode D7, and the cathode of the diode D7 is connected to the port FB, which is the output terminal of the second adder. The resistor R32 and the resistor C24 are connected in parallel, one of the parallel connection points is connected to the inverting input terminal of the integrated operational amplifier U6, and the other parallel connection point is connected to the cathode of the diode D7. The second adder is used to add the reference voltage signal, the voltage adjustment signal and the voltage control signal to obtain a voltage feedback signal, and output the voltage feedback signal to the input terminal of the voltage control unit U1 through the port FB. Among them, the reference voltage signal can be provided by a reference voltage chip, and the size of the reference voltage is the same as the size of the reference voltage of the voltage control unit U1. The voltage control signal is set according to the size of the target DC voltage actually required.

[0059] In the above embodiment, the voltage conversion circuit converts the battery voltage into the target DC voltage actually required through the voltage control unit U1, and the size of the target DC voltage is mainly determined by the voltage control signal input to the feedback calculation circuit. During the operation of the voltage change circuit, the voltage regulation circuit generates a voltage regulation signal by collecting the current signal and voltage signal output by the voltage control circuit, and inputs the voltage regulation signal into the feedback calculation circuit, and feeds back to the voltage calculation unit U1 through the feedback calculation circuit, thereby protecting the circuit and avoiding excessive current. The battery voltage of the hemostatic electrocoagulation device is converted into a target DC voltage of a specific size through the voltage conversion circuit, so that it can be subsequently inverted based on the target DC voltage through the high-frequency inverter circuit. The use of the voltage conversion circuit can facilitate the adjustment of the AC voltage obtained by the inversion. If the voltage source module uses a fixed voltage, it is necessary to adjust the inverted AC voltage by adjusting the duty cycle of the driving signal of the high-frequency inverter circuit, and different duty cycles will lead to different inversion efficiencies. If the duty cycle is too large or too small, it will also cause waveform distortion. However, this embodiment adjusts the target DC voltage through the voltage conversion circuit to control the AC voltage obtained by inversion. There is no need to adjust the duty cycle of the driving signal of the high-frequency inverter circuit, and thus no waveform distortion will occur. The inverter efficiency is also higher, which can further reduce the energy loss of the coagulation electrocoagulation equipment.

[0060] In one embodiment, the present application also provides a structural schematic diagram of another hemostatic electrocoagulation device, such as Figure 4 As shown, the hemostatic electrocoagulation device provided in the embodiment of the present application may also include a main controller, a digital-to-analog conversion module, a conversion voltage sampling module, a voltage transformer, an output voltage sampling module, a current transformer, and an output current sampling module. Among them, the main controller may be a single-chip microcomputer.

[0061] In the above embodiment, the input end of the digital-to-analog conversion module is connected to the main controller, and the output end of the digital-to-analog conversion module is connected to the voltage conversion circuit. The main controller outputs a voltage control signal to the digital-to-analog conversion module, and the voltage control signal is input into the feedback calculation circuit in the voltage conversion circuit after digital-to-analog conversion.

[0062] In the above embodiment, the driving function of the driving module can be realized by the driving chip, and the input end of the driving module can also be connected to the main controller. The waveform control signal is input to the driving module through the main controller. The driving module processes the waveform control signal to obtain two driving signals, and inputs the driving signals to the high-frequency inverter circuit.

[0063] In the above embodiment, the conversion voltage sampling module is used to sample the target DC voltage output by the voltage conversion circuit. Based on this, the output end of the voltage control circuit in the voltage conversion circuit is also provided with voltage-dividing resistors R15 and R16, and a voltage sampling port VADJ is provided between the resistors R15 and R16 to facilitate sampling of the output voltage. The input end of the conversion voltage sampling module is connected to the voltage sampling port VADJ at the output end of the voltage conversion circuit, and the output end of the conversion voltage sampling module is connected to the main controller, which is used to input the collected target DC voltage signal to the main controller.

[0064] In the above embodiment, the output voltage sampling module is used to sample the voltage output by the device, and the output current sampling module is used to sample the current output by the device. Based on this, a voltage transformer L4 and a current transformer L5 are also connected to the output end of the resonance filter module. The primary side of the voltage transformer L4 is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output voltage sampling module through the output voltage sampling port VESN. The output end of the output voltage sampling module is connected to the main controller, and is used to input the collected output voltage signal to the main controller. The primary side of the current transformer L5 is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output current sampling module through the output current sampling port IESN. The output end of the output current sampling module is connected to the main controller, and is used to output the collected output current signal to the main controller.

[0065] The main controller can calculate the voltage control signal according to the preset operation logic based on the received target DC voltage signal, output voltage signal, output current signal and the preset device output gear, and input the voltage control signal to the voltage conversion circuit through the digital-to-analog conversion module, thereby regulating the target DC voltage output by the voltage conversion circuit and the target AC voltage output by the device.

[0066] The hemostatic electrocoagulation device provided in the embodiment of the present application also includes an isolation power supply, which is used to send an isolation switch signal to the main controller to isolate the patient from the hemostatic electrocoagulation device.

[0067] By applying the technical solution of the present application, the target DC voltage is regulated by a voltage conversion circuit in the coagulation electrocoagulation device, and a push-pull high-frequency inverter circuit is used for AC-DC conversion. This can reduce the energy loss in the process of converting the battery voltage into a high-frequency AC voltage, and improve the working time and efficiency of the coagulation electrocoagulation device.

[0068] It should be noted that the function of the hemostatic electrocoagulation device provided in this embodiment is mainly realized by the circuit connection relationship between the various circuit modules, and does not rely on the program module in a certain circuit module. In addition, for the circuit module that can be implanted with the program module, the realization of its module function can be realized by the program module provided by the prior art.

[0069] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0070] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A hemostatic electrocoagulation device, characterized in that: The device comprises a host and electrocoagulation tweezers connected to the host, wherein the host comprises: a voltage source module, a driving module, a high-frequency inverter circuit and a resonance filter module; The input end of the high-frequency inverter circuit is connected to the voltage source module, the driving end of the high-frequency inverter circuit is connected to the driving module, the voltage source module is used to output a target DC voltage, and the driving module is used to output a driving signal; The output end of the high-frequency inverter circuit is connected to the input end of the resonance filter module, and the output end of the resonance filter module is connected to the two electrodes of the electrocoagulation forceps; The high-frequency inverter circuit is a push-pull inverter circuit, which is used to convert the target DC voltage into an initial AC voltage. The resonant filter module is used to filter the initial AC voltage and output the target AC voltage to the electrocoagulation forceps.

2. The hemostatic electrocoagulation device according to claim 1, characterized in that: The driving signal output by the driving module includes a first driving signal and a second driving signal, and the first driving signal and the second driving signal have opposite levels; The high-frequency inverter circuit comprises: a transformer, a first field effect transistor and a second field effect transistor, wherein the first field effect transistor and the second field effect transistor are N-channel type; The first end of the primary of the transformer is connected to the source of the first field effect transistor, the drain of the first field effect transistor is grounded, and the gate of the first field effect transistor is used to input the first driving signal; The second end of the transformer primary is connected to the source of the second field effect transistor, the drain of the second field effect transistor is grounded, and the gate of the second field effect transistor is used to input the second driving signal; The tap end of the primary side of the transformer is connected to the voltage source module, and the secondary side of the transformer is connected to the resonance filter module.

3. The hemostatic electrocoagulation device according to claim 2, characterized in that: The voltage source module includes a voltage conversion circuit, and the voltage conversion circuit is used to convert the battery voltage into a target DC voltage; The voltage conversion circuit includes a voltage control circuit, a voltage regulation circuit and a feedback calculation circuit, wherein the input end of the voltage control circuit is connected to the output end of the feedback calculation circuit, the output end of the voltage control circuit is connected to the input end of the voltage regulation circuit, and the output end of the voltage regulation circuit is connected to the input end of the feedback calculation circuit; The voltage control circuit includes a voltage control unit, a third field effect transistor and a rectifier circuit, wherein the input end of the voltage control unit is used to input a voltage feedback signal, the output end of the voltage control unit is connected to the gate of the third field effect transistor, the drain of the third field effect transistor is connected to the battery voltage, the source of the third field effect transistor is connected to the input end of the rectifier circuit, and the output end of the rectifier circuit is used to output the target DC voltage; The voltage regulating circuit comprises a current input terminal and a voltage input terminal, wherein the current input terminal is used to input the output current of the voltage control circuit, and the voltage input terminal is used to input the target DC voltage. The voltage regulating circuit is used to output a voltage regulating signal based on the output current of the voltage control circuit and the target DC voltage; The feedback calculation circuit includes a reference voltage input terminal, an adjustment voltage input terminal and a control voltage input terminal, and is used to calculate the voltage feedback signal based on the reference voltage signal input by the reference voltage input terminal, the voltage adjustment signal input by the adjustment voltage input terminal and the voltage control signal input by the control voltage input terminal.

4. The hemostatic electrocoagulation device according to claim 3, characterized in that: The voltage regulating circuit includes a differential operational amplifier, an amplifier circuit, a half-wave rectifier circuit and a first adder; The input end of the differential operational amplifier is the current input end, the output end of the differential operational amplifier is connected to the input end of the amplifier circuit, the output end of the amplifier circuit is connected to the input end of the half-wave rectifier circuit, the output end of the half-wave rectifier circuit and the voltage input end are both connected to the input end of the first adder, and the output end of the first adder outputs the voltage regulation signal.

5. The hemostatic electrocoagulation device according to claim 3, characterized in that: The feedback calculation circuit includes a second adder, the reference voltage input terminal, the adjustment voltage input terminal and the control voltage input terminal are all connected to the input terminal of the second adder, and the output terminal of the second adder outputs the voltage feedback signal.

6. The hemostatic electrocoagulation device according to claim 3, characterized in that: The device also includes a main controller and a digital-to-analog conversion module, wherein an input end of the digital-to-analog conversion module is connected to the main controller, and an output end of the digital-to-analog conversion module is connected to the voltage conversion circuit; The main controller is used to output the voltage control signal to the digital-to-analog conversion module, and the voltage control signal is input to the voltage conversion circuit after digital-to-analog conversion.

7. The hemostatic electrocoagulation device according to claim 6, characterized in that: The input end of the driving module is connected to the main controller, and the main controller is used to input a waveform control signal to the driving module; The driving module includes a first output end and a second output end, the first output end is connected to the gate of the first field effect transistor, the second output end is connected to the gate of the second field effect transistor, the first output end is used to output a first driving signal, and the second output end is used to output a second driving signal.

8. The hemostatic electrocoagulation device according to claim 6, characterized in that: The device also includes a conversion voltage sampling module, the input end of the conversion voltage sampling module is connected to the output end of the voltage conversion circuit to collect the target DC voltage output by the voltage conversion circuit to obtain a target DC voltage signal, and the output end of the conversion voltage sampling module is connected to the main controller to input the target DC voltage signal into the main controller.

9. The hemostatic electrocoagulation device according to claim 8, characterized in that: The device also includes a voltage transformer, an output voltage sampling module, a current transformer, and an output current sampling module; The primary side of the voltage transformer is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output voltage sampling module. The output end of the output voltage sampling module is connected to the main controller. The output voltage sampling module is used to collect the voltage output by the resonance filter module through the voltage transformer to obtain an output voltage signal, and input the output voltage signal to the main controller; The primary side of the current transformer is connected to the output end of the resonance filter module, and the secondary side is connected to the input end of the output current sampling module. The output end of the output current sampling module is connected to the main controller. The output current sampling module is used to collect the current output by the resonance filter module through the current transformer to obtain an output current signal, and input the output current signal to the main controller.

10. The hemostatic electrocoagulation device according to claim 9, characterized in that: The main controller is used to generate the voltage control signal according to the target DC voltage signal, the output voltage signal and the output current signal.

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