公开(公告)号：US20150088117A1

公开(公告)日：2015-03-26

申请号：US14320762

申请日：2014-07-01

Applicant: COVIDIEN LP

Inventor： JAMES A. GILBERT ,  MARK A. JOHNSTON ,  AARON MATTMILLER ,  JOSHUA H. JOHNSON

IPC: A61B18/12

CPC classification number: A61B18/1206 ,  A61B18/14 ,  A61B2018/00577 ,  A61B2018/00601 ,  A61B2018/00648 ,  A61B2018/00666 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00726 ,  A61B2018/00732 ,  A61B2018/00779 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1266

Abstract: A method of improving efficiency of an electrosurgical generator is presented, the method including controlling an output of an electrosurgical generator by converting a direct current (DC) to an alternating current (AC) using an inverter, and sensing a current and a voltage at an output of the inverter. The method further includes the steps of determining a power level based on the sensed voltage and the sensed current, determining an efficiency of the electrosurgical generator, and inserting a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.

Abstract translation: 提出了一种提高电外科发生器效率的方法，该方法包括通过使用逆变器将直流（DC）转换为交流电（AC）来控制电外科发生器的输出，并且感测电流和电压 输出变频器。 该方法还包括以下步骤：当电外科发生器的效率达到阈值功率效率时，基于检测到的电压和感测电流确定电外科生成器的效率，并且插入预定的整数倍的关闭周期 。

公开(公告)号：US20170056092A1

公开(公告)日：2017-03-02

申请号：US15349646

申请日：2016-11-11

Applicant: COVIDIEN LP

Inventor： AARON MATTMILLER ,  DONALD TONN ,  ALEXANDER M. WASKIEWICZ

IPC: A61B18/12

CPC classification number: A61B18/1206 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00726 ,  A61B2018/0075 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1286

Abstract: An electrosurgical generator includes a gain-compensated full bridge topology. Gain nonlinearity is corrected by applying impedance and phase correction factors to a control loop to achieve a linear gain structure. In embodiments, gain compensation is performed by comparing an RF setpoint signal with a calculated output signal to generate a first error signal. An impedance correction factor is applied to the first error signal to generate a second error signal. The second error signal is processed by a proportional-integral-derivative controller to generate a phase control signal. A phase control correction factor is applied to the phase control signal to generate a corrected pulse width modulation driving signal, which is used to generate PWM driving signals for a full-bridge inverter. One or more sensors provide feedback for comparison with the RF setpoint.

Abstract translation: 电外科发生器包括增益补偿全桥拓扑。 通过将阻抗和相位校正因子应用于控制回路以获得线性增益结构来校正增益非线性。 在实施例中，通过将RF设定点信号与所计算的输出信号进行比较来产生增益补偿，以产生第一误差信号。 将阻抗校正因子应用于第一误差信号以产生第二误差信号。 第二误差信号由比例积分微分控制器处理以产生相位控制信号。 将相位控制校正因子应用于相位控制信号，以产生用于产生全桥逆变器的PWM驱动信号的校正脉宽调制驱动信号。 一个或多个传感器提供反馈以与RF设定点进行比较。

公开(公告)号：US20150088118A1

公开(公告)日：2015-03-26

申请号：US14320804

申请日：2014-07-01

Applicant: COVIDIEN LP

Inventor： JAMES A. GILBERT ,  MARK A. JOHNSTON ,  AARON MATTMILLER ,  JOSHUA H. JOHNSON

IPC: A61B18/12

CPC classification number: A61B18/1206 ,  A61B18/14 ,  A61B2018/00577 ,  A61B2018/00601 ,  A61B2018/00648 ,  A61B2018/00666 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00726 ,  A61B2018/00732 ,  A61B2018/00779 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1266

Abstract: An electrosurgical generator is presented including a radio frequency (RF) amplifier coupled to an electrical energy source and configured to generate electrosurgical energy, the RF amplifier including an inverter configured to convert a direct current (DC) to an alternating current (AC), and a plurality of sensors configured to sense voltage and current of the generated electrosurgical energy. The electrosurgical generator further includes a controller coupled to the RF amplifier and the plurality of sensors. The electrosurgical may be further configured to determine a power level based on the sensed voltage and the sensed current, determine an efficiency of the electrosurgical generator, and insert a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.

Abstract translation: 提供了一种电外科发生器，其包括耦合到电能源并被配置为产生电外科能量的射频（RF）放大器，所述RF放大器包括被配置为将直流（DC）转换成交流电（AC）的反相器，以及 多个传感器，被配置为感测产生的电外科能量的电压和电流。 电外科发生器还包括耦合到RF放大器和多个传感器的控制器。 电外科可以进一步配置成基于感测到的电压和感测的电流来确定功率水平，确定电外科发生器的效率，并且当电外科发生器的效率达到阈值功率效率时插入预定的整数倍的关闭周期 。

公开(公告)号：US20160310202A1

公开(公告)日：2016-10-27

申请号：US15098822

申请日：2016-04-14

Applicant: COVIDIEN LP

Inventor： ROBERT H. WHAM ,  DONALD L. TONN ,  AARON MATTMILLER ,  WILLIAM D. FAULKNER ,  EDWARD L. BRANNAN ,  MARK A. JOHNSTON

IPC: A61B18/12 ,  G05B11/42

CPC classification number: A61B18/1233 ,  A61B18/1206 ,  A61B2018/00642 ,  A61B2018/00666 ,  A61B2018/0072 ,  A61B2018/0075 ,  A61B2018/00767 ,  A61B2018/00827 ,  A61B2018/00892

Abstract: A controller for an electrosurgical generator includes an RF inverter, a signal processor, a software compensator, a hardware compensator, and an RF inverter controller. The RF inverter generates an electrosurgical waveform and the signal processor outputs a measured value of at least one of a voltage, a current, or power of the electrosurgical waveform. The software compensator generates a desired value for at least one of the voltage, the current, or the power of the electrosurgical waveform, and the hardware compensator generates a phase shift based on the measured value and the desired value. The RF inverter controller generates a pulse-width modulation (PWM) signal based on the phase shift to control the RF inverter.

Abstract translation: 用于电外科发生器的控制器包括RF反相器，信号处理器，软件补偿器，硬件补偿器和RF逆变器控制器。 RF反相器产生电外科波形，并且信号处理器输出电外科波形的电压，电流或功率中的至少一个的测量值。 软件补偿器产生电外科波形的电压，电流或功率中的至少一个的期望值，并且硬件补偿器基于测量值和期望值产生相移。 RF逆变器控制器基于相移产生脉宽调制（PWM）信号以控制RF反相器。

公开(公告)号：US20140358138A1

公开(公告)日：2014-12-04

申请号：US14168296

申请日：2014-01-30

Applicant: COVIDIEN LP

Inventor： AARON MATTMILLER ,  DONALD TONN ,  ALEXANDER M. WASKIEWICZ

IPC: A61B18/18

CPC classification number: A61B18/1206 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00726 ,  A61B2018/0075 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1286

Abstract: An electrosurgical generator and related systems and methods using a gain-compensated full bridge topology. Gain nonlinearity is corrected by applying impedance and phase correction factors to a control loop to achieve a linear gain structure. In embodiments, gain compensation is performed by comparing an RF setpoint signal with a calculated output signal to generate a first error signal. An impedance correction factor is applied to the first error signal to generate a second error signal. The second error signal is processed by a proportional-integral-derivative controller to generate a phase control signal. A phase control correction factor is applied to the phase control signal to generate a corrected pulse width modulation driving signal, which is used to generate PWM driving signals for a full-bridge inverter. One or more sensors provide feedback for comparison with the RF setpoint.

Abstract translation: 电外科发生器及使用增益补偿全桥拓扑的相关系统和方法。 通过将阻抗和相位校正因子应用于控制回路以获得线性增益结构来校正增益非线性。 在实施例中，通过将RF设定点信号与所计算的输出信号进行比较来产生增益补偿，以产生第一误差信号。 将阻抗校正因子应用于第一误差信号以产生第二误差信号。 第二误差信号由比例积分微分控制器处理以产生相位控制信号。 将相位控制校正因子应用于相位控制信号，以产生用于产生全桥逆变器的PWM驱动信号的校正脉宽调制驱动信号。 一个或多个传感器提供反馈以与RF设定点进行比较。