The invention relates to the technical field of piezosurgery dynamic impedance feedback, and discloses a piezosurgery dynamic impedance feedback method, the specific circuit comprises a main power supply, an HMI human-computer interaction module, an MCU, a numerical control excitation power supply, a matching circuit consisting of a matching inductor and a matching capacitor, a sampling circuit composed of a resistance-capacitance voltage division circuit and a Hall sensor, a gain amplification circuit, a band-pass filter circuit, a level adjustment circuit, an in-amplitude phase detection andlow-pass filter circuit and a RMS true virtual value circuit. The resistance-capacitance circuit is adopted to divide voltage and sample the Hall sensor, so that the interference of the sampled original signal is reduced, no extra component is connected in series into the matching circuit, the acquired original signal is more accurate, the signal precision of the signal processing circuit is ensured, the drift error is reduced, the band-pass filter circuit is introduced, and the final signal is more accurate and cleaner, the corrected resonant frequency is calculated by adopting an error PIDalgorithm, and the frequency tracking speed is higher.

Piezosurgery dynamic impedance feedback method

An electrosurgical system and a control method thereof are disclosed. A power error value and a power error change rate at the current moment are obtained, a control parameter variable quantity is obtained according to the power error value and the power error change rate at the current moment and a predefined fuzzy rule, and a control parameter is adjusted according to the control parameter variable quantity so as to control the output power of the electrosurgical system. Therefore, the control parameters can be adaptively adjusted, and the precision of the output power of the electrosurgicalsystem is improved.

Electrosurgical system and control method thereof

The invention discloses an ultrasonic osteotome force detection and early-warning system applied to medical orthopedic surgery. The ultrasonic osteotome force detection and early-warning system comprises a constant-voltage power control module, a frequency locking control and admittance measurement module, a microcontroller MCU, a CPLD unit, a main power supply, a colour LCD display screen with atouch screen, an acousto-optic prompt module and a corresponding driving module; and the constant-voltage power control module is composed of a full-bridge direct-current inversion module driven by 100 KHz PWM waves and voltage sampling, voltage amplifying, filtering and voltage wedging modules. According to the system in the invention, an integrated circuit is adopted, so that the transmission precision of an electric signal is ensured; furthermore, the drift error of the performance of the device running for a long time is reduced; a high-performance stable signal can be well generated later; therefore, a sinusoidal signal with constant frequency and amplitude for exciting the ultrasonic osteotome is generated; and the long-time use stability of the ultrasonic osteotome is ensured.

Ultrasonic osteotome force detection and early-warning system applied to medical orthopedic surgery

The embodiment of the invention discloses a voice prompt method and device, equipment and a storage medium. The method comprises the following steps: acquiring system monitoring information of a preset monitoring module, wherein the system monitoring information comprises at least one of short-time excitation information and fault state information; and determining voice prompt information corresponding to the system monitoring information, and playing the voice prompt information. According to the embodiment of the invention, the voice prompt information corresponding to the system monitoringinformation is determined according to the content of the system monitoring information, so that the problem that the screen prompt is not timely is solved, a user can accurately grasp the state information of the equipment in real time, and the use effect of the equipment and the safety of the equipment in the use process are improved.

Voice prompt method and device, equipment and storage medium

The invention discloses an ultrasonic scalpel system based on frequency and power tracking and a control method thereof. The ultrasonic scalpel system comprises a main control MCU, a DDS-based signalgeneration control module, a power output isolation module, an interaction module and a medical switching power supply, wherein the signal generation control module uses a DDS chip to generate two paths of high-precision PWM signals with specific frequencies, and the power is controlled by a digital control half-bridge power adjusting circuit based on a clock circuit; and the power isolation module is used for matching the inductive reactance through the series power inductance, providing an interface for an ultrasonic scalpel, and respectively using a PID algorithm and an ADRC algorithm to control the power output and the working frequency of the ultrasonic scalpel in real time so as to achieve the real-time control of the power and the follow-up control of the resonance point frequency.The system has the advantages of high control precision, high response speed, good operation effect, high energy utilization rate, convenient operation and the like, and is suitable for driving ultrasonic surgical scalpel equipment in common ultrasonic surgical operations.

Ultrasonic scalpel system based on frequency and power tracking and control method thereof

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Ultrasonic scalpel system based on frequency and power tracking and control method thereof