Adaptive High-Frequency Power Supply for Electrosurgery
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Solution Overview
Problem
Conventional electrosurgical devices lack the ability to dynamically adjust high-frequency current output based on tissue impedance and phase differences, leading to inefficient treatment and potential tissue damage.
Innovation Solution
A high-frequency power supply device with a phase detection unit, impedance calculation unit, and control unit that adjusts the output waveform of high-frequency voltage and current based on tissue impedance and phase differences, allowing for adaptive treatment modes such as coagulation and cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electrosurgical devices supply high-frequency current without dynamic adjustment, then the device structure remains simple, but treatment efficiency is low and tissue damage occurs
Solution Approach 1:
The patent implements feedback control by detecting the impedance of biological tissue and using this information to automatically adjust the high-frequency current output parameters. The control unit receives impedance detection results and dynamically modifies voltage and current characteristics to optimize treatment efficiency while preventing tissue damage.
Solution Approach 2:
The patent applies dynamics by enabling real-time adjustment of high-frequency current parameters including voltage, current, and waveform characteristics based on detected tissue impedance. The system transitions from static fixed-parameter output to dynamic adaptive output that responds to changing tissue conditions during treatment.
2Manufacturing precision
If high-frequency current is supplied without impedance detection, then the device is easier to operate, but treatment precision is poor and tissue damage increases
Solution Approach 1:
The system performs self-adjustment by automatically detecting tissue impedance and modifying its own output parameters without requiring manual intervention. The control unit autonomously processes impedance detection data and adjusts voltage, current, and waveform parameters to achieve optimal treatment precision.
Solution Approach 2:
The patent uses feedback control where the detected impedance information is fed back to the control unit, which then adjusts the high-frequency current parameters accordingly. This closed-loop control ensures precise treatment while maintaining ease of operation through automation.
3Adaptability or versatility
If fixed waveform high-frequency current is used, then the device complexity is low, but adaptability to different tissue conditions is poor
Solution Approach 1:
The patent implements dynamic adaptability by enabling the high-frequency current waveform to be adjusted in real-time based on detected tissue impedance. The system can modify voltage amplitude, current characteristics, and waveform shape to adapt to different tissue types and treatment requirements.
Solution Approach 2:
The patent applies parameter changes by modifying multiple electrical parameters including voltage, current, and waveform characteristics based on impedance detection results. The control unit adjusts these parameters dynamically to achieve optimal treatment outcomes for different tissue conditions.
Data Source
AI summary
A high-frequency power supply device and an electrosurgical device are provided which can automatically control the output of an appropriate high-frequency current in accordance with the condition of a biological tissue to be treated. A phase detection unit detects respective phases of a high-frequency voltage and a high-frequency current outputted in a high-frequency power generation unit, and thereafter a phase difference calculation unit calculates the phase difference based on the respective phases. Meanwhile, an impedance calculation unit calculates the impedance on the basis of respective magnitudes of the high-frequency voltage and the high-frequency current. In this case, on the basis of at least one of the impedance and the phase difference and the output state of an instruction signal, a control unit performs a control to output a high-frequency voltage and a high-frequency current having a predetermined waveform. Accordingly, the output of the appropriate high-frequency current can be automatically controlled.