Radio frequency ultrasonic multichannel surgical operation system and method

Abstract

The invention provides a radio frequency ultrasonic multichannel surgical operation system and method, and relates to the radio frequency ultrasonic field, the radio frequency ultrasonic multichannel surgical operation system comprises a host, a transducer and a surgical energy instrument, the host comprises a function socket, a display interface, a radio frequency control system, an ultrasonic control system, a central processing unit and a switch detection circuit, the central processing unit is used for coordinating the work of the radio frequency control system and the ultrasonic control system; the display interface is used for displaying a system working state and parameter setting; the switch detection circuit is used for generating low-frequency positive and negative square wave signals with the frequency lower than 500Hz and generating control signals; the energy converter is detachably connected with the functional socket and is used for converting electric energy into ultrasonic mechanical energy; and the surgical energy instrument is detachably connected with the transducer and is used for conducting the ultrasonic mechanical energy and outputting radio frequency energy. According to the invention, simultaneous stable output of radio frequency energy and ultrasonic energy is realized, interference of radio frequency electric energy on an ultrasonic energy control signal is reduced, and the operation process is simplified.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency ultrasound technology, and in particular to a radio frequency ultrasound multi-channel surgical operating system and method. Background Art

[0002] In modern surgical procedures, energy-based instruments have become indispensable surgical tools, capable of performing multiple functions such as tissue cutting, coagulation, and vascular sealing. Currently, energy surgical devices on the market are primarily decentralized, single-function platforms, such as pure radiofrequency electrosurgical systems, pure ultrasonic scalpel systems, and dedicated vascular closure systems. These single platforms each possess unique technical advantages, but also significant limitations. With the advancement of minimally invasive surgery, clinical practice increasingly requires the flexible use of different energy forms within the same surgical procedure. To this end, some manufacturers have attempted to integrate two energy modes into the same device. However, these integrations are typically simple physical combinations rather than true functional integration. For example, they can only switch between different modes, but cannot output simultaneously, failing to leverage the synergistic effects of the two energies. Furthermore, the lack of unified standards for interfaces and control methods between different energy devices increases the difficulty of integration.

[0003] In existing technologies, when attempting to use RF and ultrasonic energy simultaneously, the signals generated by the RF generator (typically in the 300kHz to 1MHz range) can severely interfere with the control system's ability to recognize switching signals, leading to system instability or malfunction. Furthermore, during complex surgeries, surgeons often need to frequently switch between different energy tools to address various tissue treatment requirements. This not only increases surgical time and the risk of cross-infection, but also places an additional burden on medical staff.

[0004] Therefore, finding a method that can enable radiofrequency electrical energy and ultrasonic mechanical energy to work simultaneously and flexibly switch between different energy modes according to surgical needs is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the Invention

[0005] The present invention provides a radio frequency ultrasonic multi-channel surgical operating system and method, which is used to solve the defects in the existing technology that radio frequency electric energy and ultrasonic energy cannot work simultaneously and it is inconvenient to change the energy. It can achieve the simultaneous and stable output of radio frequency energy and ultrasonic energy, reduce the interference of radio frequency electric energy on ultrasonic energy control signals, and simplify the operating process.

[0006] The present invention provides a radio frequency ultrasonic multi-channel surgical operating system, comprising a host, a transducer and a surgical energy instrument, wherein the host comprises a functional socket, a display interface, a radio frequency control system, an ultrasonic control system, a central processing unit and a switch detection circuit, wherein: A main unit, having at least five functional sockets disposed on the front panel, wherein the radio frequency control system is used to generate and control the output of radio frequency energy, the ultrasonic control system is used to generate and control the output of ultrasonic energy, and the central processing unit is used to coordinate the operations of the radio frequency control system and the ultrasonic control system; the display interface is connected to the central processing unit and is used to display the system working status and parameter settings; the switch detection circuit is used to generate low-frequency positive and negative square wave signals with a frequency lower than 500 Hz, identify the status of the surgical energy instrument switch by detecting the changes of the low-frequency positive and negative square wave signals, and generate control signals; A transducer, detachably connected to the functional socket, and is used to convert electrical energy into ultrasonic mechanical energy; A surgical energy instrument, detachably connected to the transducer, and is used to conduct ultrasonic mechanical energy and output radio frequency energy.

[0007] According to a radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention, the functional sockets include a disposable neutral electrode socket, a coagulation and cutting functional socket, an ultrasonic functional socket, a bipolar functional socket, and a coagulation functional socket, wherein, The disposable neutral electrode socket is used to provide a current loop; The coagulation and cutting functional socket is used to connect a radio frequency scalpel and perform cutting and coagulation; The ultrasonic functional socket is used to connect an ultrasonic transducer to output ultrasonic mechanical energy; The bipolar functional socket is used to connect bipolar forceps to perform precise coagulation; The coagulation functional socket is used to connect a special electrode to perform coagulation treatment on tissues.

[0008] According to a radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention, the radio frequency control system includes a radio frequency controller, a radio frequency generator, a radio frequency power detection module, a radio frequency frequency detection module, and a radio frequency power amplification module, wherein, The radio frequency controller is used to control the output parameters of energy according to the instructions of the central processing unit; The radio frequency generator is used to generate a basic signal with a frequency in the range of 300 kHz to 1 MHz; The radio frequency power detection module is used to monitor the energy output power in real time and feedback it to the radio frequency controller; The radio frequency frequency detection module is used to monitor the stability of the signal frequency; The radio frequency power amplification module is used to amplify the basic signal generated by the radio frequency generator to a set power level.

[0009] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, the ultrasound control system includes an ultrasound controller, an ultrasound frequency generator, an ultrasound power detection module, an ultrasound frequency detection module, and an ultrasound power amplification module, wherein, the ultrasound controller is used to control the output parameters of the ultrasound energy according to the instructions of the central processing unit; the ultrasound frequency generator is used to generate a basic ultrasound frequency signal with a frequency of 55.5 kHz; the ultrasound power detection module is used to monitor the ultrasound energy output power in real time and feedback it to the ultrasound controller; the ultrasound frequency detection module is used to monitor the resonant frequency of the ultrasound transducer and perform automatic frequency tracking and tuning; the ultrasound power amplification module is used to amplify the basic signal generated by the ultrasound frequency generator to a set power level.

[0010] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, the host includes three working modes, namely a radiofrequency mode, a bipolar ultrasound mode, and a monopolar ultrasound mode, wherein, the radiofrequency mode works independently through a radiofrequency control system and is used for tissue cutting and coagulation; the bipolar ultrasound mode works through the coordinated work of the ultrasound control system and the radiofrequency control system and is used for blood vessel occlusion and tissue cutting; the monopolar ultrasound mode works through the combination of the ultrasound control system and the radiofrequency control system, wherein the radiofrequency energy is output through a monopolar path.

[0011] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, the radiofrequency mode includes three working methods: a coagulation function, a coagulation cutting function, and a bipolar function, wherein, the coagulation function uses an intermittent current, and the output power range is 5 - 120 W, which is used to dehydrate and coagulate the tissue; the coagulation cutting function uses a continuous current, and the output power range is 5 - 200 W, which is used to simultaneously achieve tissue cutting and edge coagulation; the bipolar function uses a current path that only conducts between the tips of the bipolar electrodes, and the output power range is � - 120 W, which is used for local coagulation.

[0012] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, the ultrasound control system in the bipolar ultrasound mode generates mechanical vibration energy of 55.5 kHz, and the energy output can be adjusted between 1-5 gears. Among them, gear 1 corresponds to 20% of the rated power, gear 2 corresponds to 40% of the rated power, gear 3 corresponds to 60% of the rated power, gear 4 corresponds to 80% of the rated power, and gear 5 corresponds to 100% of the rated power. The radiofrequency control system generates bipolar radiofrequency energy fixed at 30W. The bipolar ultrasound mode includes a vascular coagulation configuration and a tissue cutting configuration. Among them, The vascular coagulation configuration selects the combination of ultrasound energy in gears 1-3 and 30W bipolar radiofrequency energy to close blood vessels with a diameter less than 5mm; The tissue cutting configuration selects the combination of ultrasound energy in gears 4-5 and 30W bipolar radiofrequency energy for rapid cutting while achieving sufficient hemostasis.

[0013] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, it further includes a mode switching system. The mode switching system includes a mode recognition module and an automatic parameter adjustment module. Among them, The mode recognition module can automatically detect the type of surgical energy instrument connected and provide mode selection suggestions to the central processing unit; The automatic parameter adjustment module automatically sets the corresponding parameters of the radiofrequency control system and the ultrasound control system according to the selected working mode; Each working mode icon and parameter adjustment interface are provided on the touch display interface. The mode is switched by touching the corresponding icon, and the energy output level is adjusted through the parameter adjustment interface.

[0014] According to a radiofrequency ultrasound multi-channel surgical operating system provided by the present invention, it further includes an electromagnetic compatibility module. The electromagnetic compatibility module includes a multi-layer shielding unit, a multi-stage filtering circuit system, and a medical special grounding unit. Among them, The multi-layer shielding unit is used to prevent the leakage of radiofrequency electromagnetic radiation inside the system and resist the entry of external electromagnetic waves of the system; The multi-stage filtering circuit system includes power input filtering, signal transmission filtering, and energy output filtering, which are used to suppress radiofrequency electromagnetic noise; The medical special grounding unit is used to ensure the electrical safety of the system during operation.

[0015] The present invention also provides a radiofrequency ultrasound multi-channel surgical operation method, which is applied to the system as described above, and includes the following steps: S1. Connect the host to the power supply, connect the transducer to the functional socket on the front panel of the host, connect the surgical energy instrument to the transducer, and connect the neutral electrode to the disposable neutral electrode socket on the front panel of the host; S2. Select the working mode from the radio frequency mode, bipolar ultrasonic mode, and monopolar ultrasonic mode through the touch interface on the display interface, and the central processing unit automatically adjusts the working parameters of the radio frequency control system and the ultrasonic control system; S3. Activate the system energy output by pressing the switch button on the surgical energy instrument or stepping on the foot switch. At this time, the switch detection circuit detects the change of the low-frequency positive and negative square wave signals and transmits a control signal to the central processing unit; wherein the low-frequency positive and negative square wave signals are positive and negative square wave signals with a frequency lower than 500 Hz; S4. Apply the surgical energy instrument to the target tissue to complete the surgical operation; S5. Release the switch button on the surgical energy instrument or step on the foot switch to terminate the energy output, complete the surgical operation, and turn off the system.

[0016] A radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention realizes the simultaneous and stable output of radio frequency electrical energy and ultrasonic mechanical energy by adopting a central processing unit to coordinately control a radio frequency control system and an ultrasonic control system, improves the system stability, reduces the number of equipment replacements during the operation, shortens the operation time, and reduces the risk of cross-infection. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a block diagram of the radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention; Figure 2 It is a flowchart of the radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention; Figure 3 It is a connection schematic diagram of the bipolar ultrasonic mode radio frequency and ultrasonic knife of the radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention; Figure 4 It is a structural schematic diagram of the ultrasonic electric knife of the radio frequency and ultrasonic multi-channel surgical operation system provided by the present invention; Figure 5 It is a flowchart of the radio frequency and ultrasonic multi-channel surgical operation method provided by the present invention. Detailed Embodiments

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 and Figure 2 shown, the present invention provides a radiofrequency ultrasound multi-channel surgical operating system, including a host, a transducer and a surgical energy instrument. The host includes a function socket, a display interface, a radiofrequency control system, an ultrasound control system, a central processing unit and a switch detection circuit, wherein: The host has at least five function sockets provided on the front panel. The radiofrequency control system is used to generate and control the output of radiofrequency energy. The ultrasound control system is used to generate and control the output of ultrasound energy. The central processing unit is used to coordinate the work of the radiofrequency control system and the ultrasound control system. The display interface is connected to the central processing unit and is used to display the system working state and parameter settings. The switch detection circuit is used to generate a low-frequency positive and negative square wave signal with a frequency lower than 500 Hz, identify the state of the surgical energy instrument switch by detecting the change of the low-frequency positive and negative square wave signal, and generate a control signal. The transducer is detachably connected to the function socket and is used to convert electrical energy into ultrasonic mechanical energy. The surgical energy instrument is detachably connected to the transducer and is used to conduct ultrasonic mechanical energy and output radiofrequency energy.

[0021] It can be understood that the radiofrequency ultrasound system generates a basic signal through a radiofrequency generator, and the frequency range is between 300 kHz and 1 MHz. The ultrasound control system generates a basic electrical signal of 55.5 kHz through an ultrasound frequency generator. The central processing unit adopts a high-performance microprocessor, which is responsible for integrating the signals from the display interface, sensors and switch detection circuit, and sending corresponding control instructions to the radiofrequency control system and the ultrasound control system. The central processing unit controls the radiofrequency control system and the ultrasound control system to work simultaneously or independently according to the control signal, so that the surgical energy instrument can switch between the monopolar ultrasound mode, the bipolar ultrasound mode and the radiofrequency mode, and in the bipolar ultrasound mode, ultrasound energy and radiofrequency energy are output simultaneously.

[0022] The present invention realizes the simultaneous and stable output of radio frequency electrical energy and ultrasonic mechanical energy by using a central processing unit to coordinately control a radio frequency control system and an ultrasonic control system, effectively solving the problem that the radio frequency generator in the prior art interferes with the control system's recognition of switch signals, improving the system stability, reducing the number of equipment replacements during surgery, shortening the surgery time, and reducing the risk of cross-infection.

[0023] In an embodiment of the present invention, the host includes three working modes, namely a radio frequency mode, a bipolar ultrasonic mode, and a monopolar ultrasonic mode. Among them, The radio frequency mode works independently through the radio frequency control system and is used for tissue cutting and coagulation; The bipolar ultrasonic mode works through the cooperation of the ultrasonic control system and the radio frequency control system and is used for blood vessel occlusion and tissue cutting; The monopolar ultrasonic mode works through the combination of the ultrasonic control system and the radio frequency control system, and the radio frequency energy is output through a monopolar path.

[0024] It can be understood that in the radio frequency mode, when the switch button on the surgical energy instrument is pressed or the foot pedal switch is stepped on, the system emits a continuous sound, starts the radio frequency output, the display interface displays the current output power value and blinks, and when the switch button on the surgical energy instrument is released or the foot pedal switch is stepped on again, the power output stops. In the radio frequency mode, the bipolar function has an automatic shutdown intelligent mode. When the tissue moisture decreases and the equipment impedance increases, the host automatically recognizes and shuts down.

[0025] The present invention meets the needs of different medical scenarios through three different working modes, simplifies the operation process. Among them, the bipolar ultrasonic mode combines 1-3 gears of ultrasonic energy with 30W bipolar radio frequency energy to occlude blood vessels with a diameter less than 5mm, and combines 4-5 gears of ultrasonic energy with radio frequency energy for rapid cutting while achieving sufficient hemostasis, making the cutting, coagulation, and blood vessel occlusion operations during the surgery more accurate and efficient.

[0026] In an embodiment of the present invention, the radio frequency mode includes three working methods: a coagulation function, a coagulation and cutting function, and a bipolar function. Among them, The coagulation function uses intermittent current, and the output power range is 5-120W, which is used to dehydrate and coagulate tissues; The coagulation and cutting function uses continuous current, and the output power range is 5-200W, which is used to simultaneously cut tissues and coagulate the edges; The bipolar function uses a current path that only conducts between the tips of the bipolar electrodes, and the output power range is 5-120W, which is used for local coagulation.

[0027] It is understandable that in the radio frequency mode, the resistance impedance is monitored. When the resistance impedance is 0, it indicates that the coagulation is complete, the scab has formed, indicating the end point of coagulation, and the cutting forceps can be released. The electrode handle switch for the coagulation function is a single click; the electrode handle switch for the coagulation and cutting function is a long press; the electrode handle for the bipolar function is activated by a foot switch.

[0028] In an embodiment of the present invention, the ultrasonic control system of the bipolar ultrasonic mode generates mechanical vibration energy of 55.5 kHz, and the energy output can be adjusted between 1-5 gears, where gear 1 corresponds to 20% of the rated power, gear 2 corresponds to 40% of the rated power, gear 3 corresponds to 60% of the rated power, gear 4 corresponds to 80% of the rated power, and gear 5 corresponds to 100% of the rated power. The radio frequency control system generates bipolar radio frequency energy fixed at 30W. The bipolar ultrasonic mode includes a blood vessel coagulation configuration and a tissue cutting configuration. Among them, The blood vessel coagulation configuration selects the combination of ultrasonic energy in gears 1-3 and 30W bipolar radio frequency energy to close blood vessels with a diameter less than 5mm; The tissue cutting configuration selects the combination of ultrasonic energy in gears 4-5 and 30W bipolar radio frequency energy for rapid cutting while achieving sufficient hemostasis.

[0029] As Figure 3 shown, the figure is a connection diagram of a radio frequency ultrasonic tool in the bipolar ultrasonic mode, including a transducer 1, a radio frequency ultrasonic tool 2, a host 3, a foot switch 4, and a trolley 5.

[0030] In an embodiment of the present invention, the display interface is the human-machine interface of the system. Using touch screen technology, it can display the system working parameters in real time, including the current working mode, energy level, output power, working time, etc. Through touch screen technology, the user can directly select the working mode and adjust parameters on the display panel. At the same time, it can also intuitively display information such as the energy output status and system warnings through color changes, graphic animations, etc.

[0031] In an embodiment of the present invention, the transducer converts electrical energy into mechanical vibration energy. The piezoelectric ceramic element inside the transducer generates mechanical vibration according to the piezoelectric effect under the action of an alternating electric field.

[0032] In an embodiment of the present invention, a surgical energy instrument includes a radiofrequency ultrasound knife, an ultrasonic electrotome, and a radiofrequency knife. Among them, the radiofrequency ultrasound knife simultaneously conducts ultrasonic mechanical vibrations of 55.5 kHz and radiofrequency current (300 kHz - 1 MHz), and synergistically acts on tissues with the two energies to achieve "one knife, two effects", mainly responsible for precise cutting and preliminary blood coagulation; the ultrasonic electrotome uses an ultrasonic transducer to convert electrical energy into mechanical vibration energy of 55.5 kHz, and generates mechanical cutting and frictional heat on tissues through the high-speed vibration of the tool head (the amplitude is usually 50 - 100 microns). This mechanical vibration energy causes cell rupture, and at the same time generates heat of 50 - 100 °C, making proteins denature, to achieve cutting and preliminary blood coagulation; the radiofrequency knife uses radiofrequency current (the frequency is usually in the range of 300 kHz - 1 MHz) to generate a thermal effect through tissues to achieve the surgical purpose. When the radiofrequency current passes through tissues, due to tissue resistance, electrical energy is converted into heat energy, causing the tissue temperature to rise rapidly, achieving the effect of cutting or coagulation.

[0033] As Figure 4 shown, in an embodiment of the present invention, the ultrasonic electrotome includes a tool bar 6, an outer tube 7, a radiofrequency ultrasound output button 8, a radiofrequency output button 9, an operating handle 10, and a torque wrench 11.

[0034] In an embodiment of the present invention, the switch detection circuit generates positive and negative square wave signals with a frequency lower than 500 Hz as the control signal source. When the switch of the surgical energy instrument is not pressed, the normal low-frequency positive and negative square wave signals are maintained; when the switch is pressed, the signal becomes a low-frequency negative square wave signal. Since the control signal (<500 Hz) is significantly separated from the radiofrequency energy signal (300 kHz - 1 MHz) and the ultrasonic signal (55.5 kHz) in frequency, the system can easily identify the switch state through band-pass filtering technology without being affected by radiofrequency interference.

[0035] Specifically, the functional sockets include a disposable neutral electrode socket, a coagulation and cutting function socket, an ultrasonic function socket, a bipolar function socket, and a coagulation function socket. Among them, the disposable neutral electrode socket is used to provide a current loop; the coagulation and cutting function socket is used to connect a radiofrequency scalpel and perform cutting and blood coagulation; the ultrasonic function socket is used to connect an ultrasonic transducer to output ultrasonic mechanical energy; the bipolar function socket is used to connect bipolar forceps for precise blood coagulation; the coagulation function socket is used to connect a special electrode to perform coagulation treatment on tissues.

[0036] It is understandable that the central processing unit monitors the connection status of all sockets and enables corresponding working modes according to the user's selection and the connected instruments. For example, when it is detected that both an ultrasonic transducer and a radiofrequency ultrasonic scalpel are connected and the bipolar ultrasonic mode is selected, the system will simultaneously activate the ultrasonic function socket and the bipolar function path to achieve dual-energy collaborative output. In the mode of simultaneous operation of multiple energies (such as the bipolar ultrasonic mode), the central processing unit distributes the total power according to a preset algorithm to ensure that the system does not exceed the maximum safety load. The power distribution gives priority to surgical safety and effectiveness. For example, in the bipolar ultrasonic mode, the bipolar radiofrequency power is fixed at 30W, while the ultrasonic energy can be adjusted between 1 and 5 levels to meet different surgical needs.

[0037] In an embodiment of the present invention, the disposable neutral electrode socket adopts a dedicated connector design and is internally provided with electrical connection terminals, which are connected to the radiofrequency control system circuit inside the host. The disposable neutral electrode socket provides a loop channel for the monopolar radiofrequency current (usually in the range of 300 kHz - 1 MHz). When using the monopolar mode (such as the coagulation cutting or coagulation function), the radiofrequency current flows out from the active electrode, passes through the patient's tissue, and returns to the host through the neutral electrode attached to the patient's body surface to form a complete current loop.

[0038] In an embodiment of the present invention, the coagulation cutting function socket adopts a multi-pin design, including a power supply pin, a control signal pin, an identification pin, etc. The coagulation cutting function socket is internally provided with an electrical isolation structure to ensure the safe transmission of radiofrequency signals (signals in the range of 300 kHz to 1 MHz). The coagulation cutting function socket conducts the radiofrequency electrical energy (usually at a frequency of 300 kHz - 1 MHz) generated by the radiofrequency control system to the connected radiofrequency scalpel through the power supply pin. The adjustable range of its energy output is usually 5 - 200W, which can be adjusted in the system settings according to the coagulation cutting requirements. Its radiofrequency current is a continuous waveform, having a high cutting ability and certain coagulation effect at the same time.

[0039] In an embodiment of the present invention, the ultrasonic function socket adopts a special multi-pin connector design, including a drive power supply pin, a feedback signal pin, a control signal pin, and an identification pin. The ultrasonic function socket transmits the 55.5 kHz alternating current signal generated by the ultrasonic control system to the connected ultrasonic transducer through the drive power supply pin. The signal power is adjusted according to the energy level and is provided by the power amplification module of the ultrasonic control system. The alternating current signal drives the piezoelectric ceramic element in the transducer to generate mechanical vibration, and the vibration is amplified through the resonance effect and transmitted to the connected ultrasonic scalpel.

[0040] In an embodiment of the present invention, the bipolar function socket adopts a dedicated double-pin or multi-pin design. An insulating barrier is provided inside the bipolar function socket to prevent current leakage and short circuits. The bipolar function socket conducts radio frequency current (usually in the range of 300 kHz - 1 MHz) to the two tip electrodes of the bipolar forceps through two independent power pins. When the bipolar forceps clamp the tissue, the radio frequency current only passes through the clamped tissue, forming a local closed circuit to provide precise energy control.

[0041] In an embodiment of the present invention, the radio frequency current provided by the coagulation function socket is an intermittent waveform, which can generate instantaneous power in a short time to quickly dehydrate and coagulate the tissue. The radio frequency energy (usually in the range of 300 kHz - 1 MHz) transmitted by the coagulation function socket acts on the tissue through a dedicated electrode, causing the tissue temperature to quickly rise to about 400 °C. The intracellular water quickly evaporates, the protein denatures and shrinks, forming a dry coagulation layer. The system judges the degree of coagulation by monitoring the electrical parameters (such as impedance changes) between the monitoring electrode and the tissue to prevent carbonization.

[0042] In an embodiment of the present invention, the radio frequency control system includes a radio frequency controller, a radio frequency generator, a radio frequency power detection module, a radio frequency frequency detection module, and a radio frequency power amplification module, wherein, The radio frequency controller is used to control the output parameters of the energy according to the instructions of the central processing unit; The radio frequency generator is used to generate a basic signal with a frequency in the range of 300 kHz to 1 MHz; The radio frequency power detection module is used to monitor the energy output power in real time and feedback it to the radio frequency controller; The radio frequency frequency detection module is used to monitor the stability of the signal frequency; The radio frequency power amplification module is used to amplify the basic signal generated by the radio frequency generator to the set power level.

[0043] It can be understood that the central processing unit sends an initialization instruction to the radio frequency controller according to the working mode and setting parameters selected by the user. The radio frequency controller configures the system working parameters according to the received instruction, including the working frequency, output waveform type, power level, and safety threshold. The radio frequency controller transmits the frequency setting parameter to the radio frequency generator and the power setting parameter to the radio frequency power amplification module. The radio frequency controller, radio frequency generator, radio frequency power detection module, radio frequency frequency detection module, and radio frequency power amplification module complete an internal self-check and report the ready state to the radio frequency controller. The radio frequency controller reports the system readiness to the central processing unit.

[0044] In an embodiment of the present invention, the radio frequency controller receives instructions from the central processing unit (such as operating mode, power setting, waveform characteristics, etc.), parses them into specific control parameters, and generates corresponding waveform modulation control signals according to different operating modes (coagulation, cutting coagulation, bipolar, etc.). For example, the cutting coagulation mode usually uses a continuous waveform, while the coagulation mode uses an intermittent waveform. At the same time, the radio frequency controller can adjust the control parameters in real time according to the feedback information received from the power detection module and the frequency detection module, maintain stable output characteristics, continuously monitor the system operating state, and when detecting abnormal situations (such as impedance mutation, overcurrent, overheating, etc.), can quickly respond, such as adjusting the output or triggering shutdown.

[0045] In an embodiment of the present invention, the radio frequency generator synthesizes different types of waveforms according to the instructions of the radio frequency controller, such as a continuous sine wave for the cutting mode, a modulated waveform for the coagulation mode, and a mixed waveform for the cutting coagulation mode.

[0046] In an embodiment of the present invention, the radio frequency power detection module simultaneously measures the current and voltage values in the output circuit, multiplies the measured current and voltage values to calculate the instantaneous power value, calculates the tissue impedance through the ratio of voltage to current, and judges the tissue state according to the tissue impedance.

[0047] In an embodiment of the present invention, the radio frequency frequency detection module collects signals through a high-impedance (input impedance in the range of 1 MΩ to 100 MΩ) probe, measures the signal period by detecting the zero-crossing point of the signal, and then calculates the actual frequency. Compares the measured frequency with the set frequency, calculates the deviation value and deviation rate, and when detecting that the frequency deviates from the set range or shows instability, immediately reports to the radio frequency controller to trigger corresponding adjustment or protection measures.

[0048] In an embodiment of the present invention, the radio frequency power amplification module receives the basic signal from the radio frequency generator, and through a multi-stage amplification circuit, amplifies the milliwatt-level basic signal to a power level of up to 200 W. For example, in the cutting coagulation mode, the amplifier provides a continuous high-power output, and in the coagulation mode, the amplifier provides an intermittent output with a high peak power. Through the matching network, it ensures that the power can be effectively transmitted to tissue loads with different impedances, reducing reflection losses.

[0049] In an embodiment of the present invention, the ultrasonic control system includes an ultrasonic controller, an ultrasonic frequency generator, an ultrasonic power detection module, an ultrasonic frequency detection module, and an ultrasonic power amplification module, wherein, The ultrasonic controller is used to control the output parameters of ultrasonic energy according to the instructions of the central processing unit; The ultrasonic frequency generator is used to generate a basic ultrasonic frequency signal with a frequency of 55.5 kHz; The ultrasonic power detection module is used to monitor the ultrasonic energy output power in real time and feedback it to the ultrasonic controller; The ultrasonic frequency detection module is used to monitor the resonant frequency of the ultrasonic transducer and perform automatic frequency tracking and tuning; The ultrasonic power amplification module is used to amplify the basic signal generated by the ultrasonic frequency generator to the set power level.

[0050] It can be understood that when the system is started or the transducer is connected, the central processing unit sends an initialization instruction to the ultrasonic controller. The ultrasonic controller performs self-check and calibration of the power amplification module, and sets the ultrasonic frequency generator to output a low-power test signal to activate the ultrasonic frequency detection module. The ultrasonic frequency generator generates a swept-frequency signal, which usually changes gradually within the range of 55.5 kHz ± 1 kHz. The ultrasonic power amplification module amplifies the swept-frequency signal to a safe low-power level (usually about 10-20% of the maximum power). The ultrasonic frequency detection module measures the impedance characteristics of the transducer at different frequencies, identifies the optimal resonant frequency point, and feeds the resonant frequency data back to the ultrasonic controller. The ultrasonic controller records this resonant frequency and instructs the ultrasonic frequency generator to lock at this frequency. The ultrasonic controller reports the completion of initialization to the central processing unit, and the system enters the standby state.

[0051] In an embodiment of the present invention, the ultrasonic controller receives instructions from the central processing unit, including ultrasonic energy levels (1-5 levels), working duration, operating mode, etc., converts these high-level instructions into specific control parameters, such as drive voltage, frequency offset range, power limit, etc., and dynamically adjusts the output frequency of the ultrasonic frequency generator according to the actual resonant frequency of the transducer fed back by the ultrasonic frequency detection module to ensure that the system always operates at the optimal resonant point.

[0052] In an embodiment of the present invention, the ultrasonic frequency generator generates the basic ultrasonic frequency signal required to drive the transducer and adjusts the amplitude of the signal according to the energy level setting of the ultrasonic controller.

[0053] In an embodiment of the present invention, the ultrasonic power detection module monitors the electrical power and mechanical energy output efficiency transmitted to the transducer in real time, and simultaneously measures the voltage and current values output to the transducer, including amplitude and phase information. Based on the collected voltage and current data, various power parameters are calculated, and then the electrical impedance of the transducer is calculated. The working state of the transducer is evaluated according to the electrical impedance of the transducer. When the load of the transducer changes (such as contacting tissues with different densities), the impedance will change accordingly. By analyzing the change trend of the electrical parameters, the actual output efficiency of the ultrasonic mechanical energy is indirectly evaluated. For example, when the tool head contacts the tissue, the change pattern of the electrical impedance can reflect the effectiveness of energy transfer.

[0054] In an embodiment of the present invention, the ultrasonic frequency detection module monitors the actual resonant frequency of the transducer, generates accurate frequency tuning data according to the frequency monitoring results, and transmits it to the ultrasonic controller for guiding the ultrasonic frequency generator to perform real-time frequency adjustment.

[0055] In an embodiment of the present invention, the ultrasonic power amplification module receives the basic signal from the ultrasonic frequency generator, amplifies the signal to the required power level through a multi-stage amplification circuit. According to different energy levels (1-5 levels), the output power may vary in the range of 10W to 100W. The ultrasonic power amplification module can adjust the output power within milliseconds according to the instructions of the ultrasonic controller to meet the requirements of different working modes, such as pulse mode or gradient mode.

[0056] In an embodiment of the present invention, it further includes a mode switching system. The mode switching system includes a mode recognition module and an automatic parameter adjustment module, wherein, The mode recognition module can automatically detect the type of the connected surgical energy instrument and provide mode selection suggestions to the central processing unit; The automatic parameter adjustment module automatically sets the corresponding parameters of the radio frequency control system and the ultrasonic control system according to the selected working mode; On the display interface, there are icons for each working mode and a parameter adjustment interface. The mode can be switched by touching the corresponding icon, and the energy output level can be adjusted through the parameter adjustment interface.

[0057] It can be understood that after the system is started, the display interface displays a welcome interface and enters the standby state interface. When the user connects the instrument to the corresponding function socket, the mode recognition module transmits the recognition result to the central processing unit. The central processing unit processes this information, then notifies the display interface to update the display, and at the same time, the automatic parameter adjustment module preloads the default parameter settings of the instrument and waits for the user to confirm the mode selection.

[0058] In an embodiment of the present invention, the mode recognition module can automatically detect the type of the surgical energy instrument connected to the system and provide appropriate working mode selection suggestions for the user. When the surgical energy instrument is connected to the function socket of the system, it detects whether the instrument is connected by monitoring the change of the electrical state of the socket and the mechanical switch or photodetector on the socket. According to the electrical characteristics of the instrument (such as impedance value, resonant frequency), it identifies the type of the connected instrument. When the instrument type is identified, it extracts the detailed parameters of the instrument from the built-in database, such as the working characteristics of the instrument, recommended operation modes, parameter settings, safety limits, and warning thresholds, and generates a mode recommendation, sends the recommendation result to the central processing unit, and displays it on the display interface.

[0059] In one embodiment of the present invention, the automatic parameter adjustment module automatically configures various parameters of the system according to the selected working mode and the recognized instrument type.

[0060] In one embodiment of the present invention, there is also an electromagnetic compatibility module, and the electromagnetic compatibility module includes a multi-layer shielding unit, a multi-stage filtering circuit system, and a medical special grounding unit. Among them, The multi-layer shielding unit is used to prevent the leakage of radio frequency electromagnetic radiation inside the system and resist the entry of electromagnetic waves outside the system; The multi-stage filtering circuit system includes power input filtering, signal transmission filtering, and energy output filtering, and is used to suppress radio frequency electromagnetic noise; The medical special grounding unit is used to ensure the electrical safety of the system during operation.

[0061] The present invention effectively prevents the leakage of radio frequency electromagnetic radiation inside the system, resists external electromagnetic wave interference, suppresses radio frequency electromagnetic noise, and ensures the electrical safety and stability of the system in the medical environment through the multi-layer shielding unit, the multi-stage filtering circuit system, and the medical special grounding unit.

[0062] In one embodiment of the present invention, the multi-layer shielding unit includes electrostatic shielding, electromagnetic shielding, and magnetic field shielding, which can effectively prevent the electromagnetic radiation of external devices (such as MRI devices and wireless communication devices) from affecting the stability of the surgical system. At the same time, it ensures that the radiation signals generated by the system will not interfere with other devices (such as monitors), and during multi-channel signal communication, it avoids crosstalk between signals and ensures precise control and energy output.

[0063] As Figure 5 shown, the present invention also provides a radio frequency ultrasound multi-channel surgical operation method, which is applied to the system as described above, and includes the following steps: S1. Connect the host to the power supply, connect the transducer to the functional socket on the front panel of the host, connect the surgical energy instrument to the transducer, and connect the neutral electrode to the disposable neutral electrode socket on the front panel of the host; S2. Select the working mode from the radio frequency mode, bipolar ultrasound mode, and monopolar ultrasound mode through the touch interface on the display interface, and the central processing unit automatically adjusts the working parameters of the radio frequency control system and the ultrasound control system; S3. Activate the system energy output by pressing the switch button on the surgical energy instrument or stepping on the foot switch. At this time, the switch detection circuit detects the change of the low-frequency positive and negative square wave signals and transmits a control signal to the central processing unit; wherein the low-frequency positive and negative square wave signals are positive and negative square wave signals with a frequency lower than 500 Hz; S4. Apply the surgical energy instrument to the target tissue to complete the surgical operation; S5. Release the switch button on the surgical energy instrument or step on the foot switch to terminate the energy output, complete the surgical operation, and turn off the system.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radiofrequency ultrasound multi-channel surgical operating system, characterized in that It includes a main unit, a transducer, and a surgical energy instrument. The main unit includes a functional socket, a display interface, a radio frequency control system, an ultrasonic control system, a central processing unit, and a switch detection circuit, where: The main unit has at least five functional sockets provided on the front panel. The radio frequency control system is used to generate and control the output of radio frequency energy. The ultrasonic control system is used to generate and control the output of ultrasonic energy. The central processing unit is used to coordinate the operation of the radio frequency control system and the ultrasonic control system. The display interface is connected to the central processing unit and is used to display the system working status and parameter settings. The switch detection circuit is used to generate a low-frequency positive and negative square wave signal with a frequency lower than 500 Hz, identify the state of the surgical energy instrument switch by detecting the change of the low-frequency positive and negative square wave signal, and generate a control signal. The transducer is detachably connected to the functional socket and is used to convert electrical energy into ultrasonic mechanical energy. The surgical energy instrument is detachably connected to the transducer and is used to conduct ultrasonic mechanical energy and output radio frequency energy.

2. The radiofrequency ultrasound multi-channel surgical operating system according to claim 1, wherein The functional socket includes a disposable neutral electrode socket, a coagulation and cutting functional socket, an ultrasonic functional socket, a bipolar functional socket, and a coagulation functional socket. Among them, The disposable neutral electrode socket is used to provide a current loop. The coagulation and cutting functional socket is used to connect a radio frequency scalpel for cutting and coagulation. The ultrasonic functional socket is used to connect an ultrasonic transducer to output ultrasonic mechanical energy. The bipolar functional socket is used to connect bipolar forceps for precise coagulation. The coagulation functional socket is used to connect a special electrode for coagulating tissue.

3. The radiofrequency ultrasound multi-channel surgical operating system according to claim 1, characterized in that, The radio frequency control system includes a radio frequency controller, a radio frequency generator, a radio frequency power detection module, a radio frequency frequency detection module, and a radio frequency power amplification module. Among them, The radio frequency controller is used to control the output parameters of energy according to the instructions of the central processing unit. The radio frequency generator is used to generate a basic signal with a frequency in the range of 300 kHz to 1 MHz. The radio frequency power detection module is used to monitor the energy output power in real time and feedback it to the radio frequency controller. The radio frequency frequency detection module is used to monitor the stability of the signal frequency. The radio frequency power amplification module is used to amplify the basic signal generated by the radio frequency generator to the set power level.

4. The radiofrequency ultrasound multi-channel surgical operating system according to claim 3, characterized in that, The ultrasonic control system includes an ultrasonic controller, an ultrasonic frequency generator, an ultrasonic power detection module, an ultrasonic frequency detection module, and an ultrasonic power amplification module. Among them, The ultrasonic controller is used to control the output parameters of ultrasonic energy according to the instructions of the central processing unit. The ultrasonic frequency generator is used to generate a basic ultrasonic frequency signal with a frequency of 55.5 kHz. The ultrasonic power detection module is used to monitor the ultrasonic energy output power in real time and feedback it to the ultrasonic controller. The ultrasonic frequency detection module is used to monitor the resonant frequency of the ultrasonic transducer and perform automatic frequency tracking and tuning. The ultrasonic power amplification module is used to amplify the basic signal generated by the ultrasonic frequency generator to the set power level.

5. The radiofrequency ultrasound multi-channel surgical operating system according to claim 1, wherein The main unit includes three working modes, namely the radio frequency mode, the bipolar ultrasonic mode, and the monopolar ultrasonic mode. Among them, The radio frequency mode operates independently through a radio frequency control system and is used for tissue cutting and coagulation; The bipolar ultrasound mode works through the coordinated operation of an ultrasound control system and a radio frequency control system and is used for blood vessel occlusion and tissue cutting; The monopolar ultrasound mode works by combining an ultrasound control system and a radio frequency control system, where the radio frequency energy is output through a monopolar path.

6. The radiofrequency ultrasound multi-channel surgical operating system according to claim 5, characterized in that, The radio frequency mode includes three operating modes: coagulation function, coagulation cutting function, and bipolar function. Among them, The coagulation function uses intermittent current with an output power range of 5 - 120W to dehydrate and coagulate tissue; The coagulation cutting function uses continuous current with an output power range of 5 - 200W to simultaneously achieve tissue cutting and edge coagulation; The bipolar function uses a current path that conducts only between the tips of the bipolar electrodes, with an output power range of 5 - 120W for local coagulation.

7. The radiofrequency ultrasound multi-channel surgical operating system according to claim 6, characterized in that, The ultrasound control system of the bipolar ultrasound mode generates mechanical vibration energy of 55.5 kHz, and the energy output can be adjusted between 1 - 5 gears. Among them, gear 1 corresponds to 20% of the rated power, gear 2 corresponds to 40% of the rated power, gear 3 corresponds to 60% of the rated power, gear 4 corresponds to 80% of the rated power, and gear 5 corresponds to 100% of the rated power. The radio frequency control system generates bipolar radio frequency energy fixed at 30W. The bipolar ultrasound mode includes a blood vessel coagulation configuration and a tissue cutting configuration. Among them, The blood vessel coagulation configuration selects the combination of ultrasound energy in gears 1 - 3 and 30W bipolar radio frequency energy to occlude blood vessels with a diameter less than 5mm; The tissue cutting configuration selects the combination of ultrasound energy in gears 4 - 5 and 30W bipolar radio frequency energy for rapid cutting while achieving sufficient hemostasis.

8. The radiofrequency ultrasound multi-channel surgical operating system according to claim 5, characterized in that, It also includes a mode switching system, which includes a mode recognition module and an automatic parameter adjustment module. Among them, The mode recognition module can automatically detect the type of connected surgical energy instrument and provide mode selection suggestions to the central processing unit; The automatic parameter adjustment module automatically sets the corresponding parameters of the radio frequency control system and the ultrasound control system according to the selected operating mode; On the touch display interface, there are icons for each operating mode and a parameter adjustment interface. Mode switching is achieved by touching the corresponding icon, and the energy output level is adjusted through the parameter adjustment interface.

9. The radiofrequency ultrasound multi-channel surgical operating system according to claim 1, characterized in that It also includes an electromagnetic compatibility module, which includes a multi-layer shielding unit, a multi-stage filter circuit system, and a medical special grounding unit. Among them, The multi-layer shielding unit is used to prevent the leakage of radio frequency electromagnetic radiation inside the system and resist the entry of external electromagnetic waves of the system; The multi-stage filter circuit system includes power input filtering, signal transmission filtering, and energy output filtering, which are used to suppress radio frequency electromagnetic noise; The medical special grounding unit is used to ensure the electrical safety of the system during operation.

10. A radiofrequency ultrasound multi-channel surgical operation method, characterized in that, When applied to the system according to any one of claims 1 - 9, it includes the following steps: S1. Connect the host to the power supply, connect the transducer to the function socket on the front panel of the host, connect the surgical energy instrument to the transducer, and connect the neutral electrode to the disposable neutral electrode socket on the front panel of the host; S2. Select the working mode from the radio frequency mode, bipolar ultrasound mode, and monopolar ultrasound mode through the touch interface on the display interface, and the central processing unit automatically adjusts the working parameters of the radio frequency control system and the ultrasound control system; S3. Activate the system energy output by pressing the switch button on the surgical energy instrument or stepping on the foot switch. At this time, the switch detection circuit detects the change of the low-frequency positive and negative square wave signals and transmits a control signal to the central processing unit; wherein the low-frequency positive and negative square wave signals are positive and negative square wave signals with a frequency lower than 500 Hz; S4. Apply the surgical energy instrument to the target tissue to complete the surgical operation; S5. Release the switch button on the surgical energy instrument or step on the foot switch to terminate the energy output, complete the surgical operation and turn off the system.

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