Coagulation hemostasis electric coagulation equipment

Abstract

The utility model 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 utility model relates to the technical field of circuits, in particular to a hemostatic electrocoagulation device. Background Art

[0002] Coagulation and hemostasis electrocoagulation equipment usually consists of a host and electrocoagulation tweezers. The host generates high-frequency current and transmits it to the electrocoagulation tweezers. The electrocoagulation tweezers 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] In scenarios such as disaster scenes, the use of electrocoagulation to stop bleeding should maximize the duration of the coagulation device and increase the strength of the forceps. Therefore, a solution to reduce the energy loss of the coagulation device is urgently needed to meet the needs of high-power, long-term coagulation operations. Utility Model Content

[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 utility model provides a hemostatic electrocoagulation device, which includes a host and electrocoagulation tweezers connected to the host. 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, 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.

[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 tweezers;

[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 tweezers.

[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 includes: 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 primary of the transformer 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. 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. The output end of the rectifier circuit is used to output the target DC voltage.

[0017] The voltage regulation 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 regulation circuit is used to output a voltage regulation 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 regulation 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, and 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 resonant 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 resonant 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 resonant 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 resonant 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 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. Compared with the ordinary high-frequency inverter circuit, it can improve work efficiency, 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 utility model is shown;

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

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

[0037] Figure 4A structural schematic diagram of another hemostatic electrocoagulation device provided by an embodiment of the utility model 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, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[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. The host includes a voltage source module, a driving module, a high-frequency inverter circuit and a resonant 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 resonant filter module, and the output end of the resonant filter module is connected to the two electrodes of the electrocoagulation forceps. The high-frequency inverter circuit is a push-pull inverter circuit. The high-frequency inverter circuit is used to convert the target DC voltage into an initial AC voltage, and the resonant 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 tips of the electrocoagulation forceps need to release high-frequency alternating current. Therefore, the voltage source module can be the battery of 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. Driven by a driving signal, a 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 a resonant filter module and output to the electrocoagulation forceps to achieve the hemostatic function.

[0041] Energy loss will be generated during 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 this 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 inversion is realized. The structure of the high-frequency inverter circuit is as follows: Figure 2 As shown, it includes a transformer T1, a first field-effect transistor Q1, and a second field-effect transistor Q2. Both the first field-effect transistor Q1 and the second field-effect transistor Q2 are N-channel. The first terminal (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 terminal (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 terminal (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 several resistors, capacitors, and diodes. Specifically, the tap terminal (pin 2) of the primary of transformer T1 is connected to port V-ADJ via resistor R1. 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 via port V-ADJ. The source of the first field-effect transistor Q1 is connected to the input terminal of capacitor C2, the output terminal of capacitor C2 is connected to the input terminal of resistor R2, the output terminal of resistor R2 is grounded, and diode D1 is connected in parallel across resistor R2. Resistor R3 is connected to the gate and drain of the first field-effect transistor Q1, and capacitor C1 is connected to the gate and drain of the first field-effect transistor Q1. Correspondingly, the source of the second field-effect transistor Q2 is connected to the input terminal of capacitor C4, the output terminal of capacitor C4 is connected to the input terminal of resistor R5, the output terminal of resistor R5 is grounded, and diode D2 is connected in parallel across resistor R5. Resistor R4 is connected to the gate and drain of the second field-effect transistor Q2, and capacitor C3 is connected to the gate and drain of the second field-effect transistor Q2.

[0044] The driver module outputs two drive signals and accordingly includes two output terminals. Port SW1, connected to the gate of the first field-effect transistor (FET) Q1, is connected to the first output terminal of the driver module. Port SW1 allows the first drive signal to be input to the high-frequency inverter circuit. Port SW2, connected to the gate of the second field-effect transistor (FET) Q2, is connected to the second output terminal of the driver module. Port SW2 allows the second drive signal to be input to the high-frequency inverter circuit. When the first drive signal is high, the second drive signal is low, turning on the first field-effect transistor (FET) Q1. Current in the primary of transformer T1 flows into pin 2 and out of pin 1. Accordingly, current in the secondary of transformer T1 flows into pin 4 and out of pin 5. Conversely, when the second drive signal is high, the first drive signal is low, turning on the second field-effect transistor (FET) Q2. Current in the primary of transformer T1 flows into pin 2 and out of pin 3. Accordingly, current in the secondary of transformer T1 flows into pin 5 and out of pin 4. This creates an oscillating signal, converting the DC signal into an AC signal, thereby generating the initial AC voltage.

[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 port BIP-A through capacitor C9, and the other end of the secondary of the transformer T1 is connected to port BIP-B, wherein port BIP-A and 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 is generated, which is the target AC voltage. This target AC voltage is then input into the two electrodes of the electrocoagulation forceps. The high-frequency AC current is released through the tips of the forceps, achieving hemostasis in the biological tissue.

[0047] In the above embodiment, a push-pull high-frequency inverter circuit is driven by two drive signals. The two drive signals drive the field-effect transistors to operate alternately. Compared with a method using only one signal drive, the operating efficiency of the high-frequency inverter circuit is improved, and the use of two field-effect transistors for driving increases power. At the same time, compared with single-sided drive, the push-pull method improves the magnetic balance of transformer T1. If the transformer has poor magnetic balance, it will lead to increased energy consumption. Therefore, the use of a push-pull method can reduce the energy loss of transformer T1. Furthermore, the push-pull high-frequency inverter circuit can reduce the energy loss of the AC-DC conversion of the hemostatic electrocoagulation device and increase the operating time.

[0048] In one embodiment, the DC voltage provided by the voltage source module to the high-frequency inverter circuit can 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, if Figure 3 As shown in Figure (A), the voltage control circuit includes a voltage control unit U1, a third field-effect transistor Q3, and a rectifier circuit. The input terminal FB of the voltage control power supply U1 is used to input a voltage feedback signal. The output terminal PGATE of the voltage control unit U1 is connected to the gate of the third field-effect transistor Q3 via a resistor R12. The drain of the third field-effect transistor Q3 is connected to the battery voltage via 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. The output terminal of the rectifier circuit is used to output the target DC voltage. 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 via transistor Q4. Specifically, the base of transistor Q4 is connected to the switch control port ON / OFF via resistor R7. The base is also connected to the input terminal of resistor R8 and the input terminal of capacitor C13. The output terminal of resistor R8 and the output terminal of capacitor C13 are grounded. The emitter of transistor Q4 is grounded, and the collector is connected to the battery voltage via 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, 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 operate. Conversely, when the switch control signal is at a ground level, 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 operates.

[0051] The voltage control unit U1 can use a DC-DC chip for converting DC voltage. The voltage control circuit also includes several resistors and capacitors. Specifically, the adjustment pin ADJ of the voltage control unit U1 is connected to the battery voltage via resistor R9, and capacitor C12 is connected in parallel across resistor R9. The voltage control unit's GND pin is grounded, the VIN pin is connected to the battery voltage, and the VCC pin is connected to the battery voltage via capacitor C14. The input end of resistor R10 is connected to the battery voltage, and the output end of resistor R10 is connected to the current protection pin ISEN of the voltage control unit U1. One end of capacitor C15 is connected to the drain of the third field-effect transistor Q3, and the other end is connected to one end of resistor R11. The other end of resistor R11 is connected to the source of the third field-effect transistor Q3. The source of the third field-effect transistor 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, the resistor R13 and the capacitor C16 are connected in series and then 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] The non-inverting and inverting inputs of differential op amp U2 serve as current inputs, connected to the first current sampling port CURR+ and the second current sampling port CURR-, respectively, provided across resistor R14 in the voltage control circuit, for sampling the output current of the voltage control circuit. The output of differential op amp U2 is connected to the input of the amplifier circuit. The differential op amp performs differential calculations on the current sampled at the output of the voltage control circuit, amplifies it, and then inputs it into the amplifier circuit.

[0055] The amplifier circuit includes an integrated operational amplifier (OPA) U3 and several resistors and capacitors. The inverting input of OPA U3 is connected to the output of differential OPA U2 via resistor R17, while the non-inverting input of OPA U3 is grounded via resistor R18. Resistor R19 and capacitor C20 are connected in parallel between the inverting input and output of OPA U2. The amplifier circuit further amplifies the output signal of the differential OPA and then feeds it into the half-wave rectifier circuit.

[0056] The half-wave rectifier circuit includes an integrated operational amplifier (OPA) U4 as well as several resistors, capacitors, and diodes. The non-inverting input of OPA U4 is grounded via resistor R22. The inverting input of OPA U4 is connected to the output of the amplifier circuit via resistor R21. The inverting input of OPA U4 is also connected to the voltage of the OPA via resistor R20. The output of OPA U4 is connected to the anode of diode D5, and the cathode of diode D5 is connected to the first adder. The anode of diode D4 is connected to the inverting input of OPA U4, and the cathode of diode D4 is connected to the output of OPA U4. Resistor R23 and capacitor C21 are connected in parallel, with one parallel connection point connected to the inverting input of OPA U4 and the other parallel connection point connected to the cathode of diode D5. The half-wave rectifier circuit is used to perform half-wave rectification on the current signal output by the method circuit, which is then input into the first adder.

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

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

[0059] In the above embodiment, the voltage conversion circuit converts the battery voltage into the required target DC voltage via the voltage control unit U1. The magnitude of the target DC voltage is primarily determined by the voltage control signal input to the feedback calculation circuit. During operation of the voltage conversion circuit, the voltage regulation circuit generates a voltage regulation signal by collecting the current and voltage signals output by the voltage control circuit. This voltage regulation signal is input into the feedback calculation circuit, which then feeds it back to the voltage calculation unit U1, thereby protecting the circuit and preventing excessive current. The voltage conversion circuit converts the battery voltage of the hemostatic electrocoagulation device into a specific target DC voltage, which is then inverted by the high-frequency inverter circuit based on the target DC voltage. Using the voltage conversion circuit facilitates adjustment of the inverted AC voltage. If the voltage source module uses a fixed voltage, the inverted AC voltage must be regulated by adjusting the duty cycle of the high-frequency inverter circuit's drive signal. Different duty cycles result in different inverter efficiencies, and a duty cycle that is too large or too small can also cause waveform distortion. This embodiment regulates the AC voltage obtained by inversion by adjusting the target DC voltage through the voltage conversion circuit. 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 further 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. The main controller may be a single-chip microcomputer.

[0061] In the above embodiment, the input of the digital-to-analog conversion module is connected to the main controller, and the output 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, which is then converted from digital to analog and input into the feedback calculation circuit in the voltage conversion circuit.

[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 into 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. To this end, the output of the voltage control circuit in the voltage conversion circuit is further provided with voltage-dividing resistors R15 and R16. A voltage sampling port VADJ is provided between resistors R15 and R16 to facilitate sampling of the output voltage. The input of the conversion voltage sampling module is connected to the voltage sampling port VADJ at the output of the voltage conversion circuit. The output of the conversion voltage sampling module is connected to the main controller, and 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 resonant filter module. The primary side of the voltage transformer L4 is connected to the output end of the resonant filter module, and the secondary side is connected to the input end of the output voltage sampling module via the output voltage sampling port VESN. The output end of the output voltage sampling module is connected to the main controller for inputting 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 resonant filter module, and the secondary side is connected to the input end of the output current sampling module via the output current sampling port IESN. The output end of the output current sampling module is connected to the main controller for outputting 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 further 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 and hemostasis 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 and hemostasis electrocoagulation device.

[0068] It should be noted that the functions of the hemostatic electrocoagulation device provided in this embodiment are primarily implemented through the circuit connections between the various circuit modules, and do not rely on the implementation of the program modules within a particular circuit module. Furthermore, for circuit modules that can be implanted with program modules, the implementation of their module functions can be achieved using program modules provided by existing technologies.

[0069] Those skilled in the art will understand 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 required to implement the present application. Those skilled in the art will understand that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0070] The serial numbers of the above application are for descriptive purposes only and do not represent the advantages or disadvantages of the implementation scenarios. The above disclosure only discloses several specific implementation scenarios of the present application, but the present application is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present application.

Claims

1. A hemostatic electrocoagulation device, characterized in that: The device includes a host and electrocoagulation tweezers connected to the host, wherein 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 tweezers; 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 tweezers.

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 includes: 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 primary of the transformer 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, which 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. 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. The output end of the rectifier circuit is used to output the target DC voltage. The voltage regulating circuit includes a current input terminal and a voltage input terminal, the current input terminal is used to input the output current of the voltage control circuit, the voltage input terminal is used to input the target DC voltage, and 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 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; 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, and 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 resonant 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 resonant 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 resonant 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 resonant 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 configured 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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