公开(公告)号：US09921243B2

公开(公告)日：2018-03-20

申请号：US14069534

申请日：2013-11-01

Applicant: COVIDIEN LP

Inventor： Patrick J. Digmann ,  James A. Gilbert ,  David Farrell

IPC: A61B18/12 ,  G01R1/067 ,  A61B18/14 ,  A61B18/00

CPC classification number: G01R1/06772 ,  A61B18/1206 ,  A61B18/1402 ,  A61B18/1445 ,  A61B2018/00827 ,  A61B2018/00892 ,  G01R1/06788

Abstract: An electrosurgical system is disclosed. The system includes a radio frequency output stage configured to output at least one radio frequency waveform and a current sensor coupled to the output stage and configured to output a first differentiated signal corresponding to a current of the at least one radio frequency waveform, the current sensor coupled to a first conditioning circuit configured to integrate the first differentiated signal to output a processed current signal indicative of the current. The system further includes a voltage sensor coupled to the output stage and configured to output a second differentiated signal corresponding to a voltage of the at least one radio frequency waveform, the voltage sensor coupled to a second conditioning circuit configured to integrate the second differentiated signal to output a processed voltage signal indicative of the voltage, wherein the first and second conditioning circuits have a substantially similar bandpass and phase response.

公开(公告)号：US09895186B2

公开(公告)日：2018-02-20

申请号：US14147312

申请日：2014-01-03

Applicant: COVIDIEN LP

Inventor： James A. Gilbert

IPC: A61B18/12 ,  G01R31/28 ,  A61B17/00 ,  A61B18/14

CPC classification number: A61B18/1206 ,  A61B18/1233 ,  A61B18/1402 ,  A61B18/1492 ,  A61B2017/00725 ,  G01R31/2843

Abstract: An electrosurgical generator includes primary and test sources. The primary source supplies a primary signal and the test source supplies a test signal. The electrosurgical generator includes an output circuit and an abnormality detection circuit. The output circuit is electrically coupled to the primary and test sources. The output circuit receives the primary and test signals from the primary and test sources, respectively. The output circuit is electrically coupled to a load to supply the primary signal thereto. The abnormality detection circuit is electrically coupled to the output circuit to detect an abnormality therein as a function of the test signal. The abnormality detection circuit can also determine a location of the abnormality within the output circuit.

公开(公告)号：US09705456B2

公开(公告)日：2017-07-11

申请号：US14262219

申请日：2014-04-25

Applicant: COVIDIEN LP

Inventor： James A. Gilbert

IPC: A61B18/00 ,  H03F3/45 ,  A61B18/12 ,  H03F1/02 ,  H03F3/217 ,  H03K5/01

CPC classification number: H03F3/45071 ,  A61B18/1206 ,  A61B2018/00767 ,  A61B2018/00892 ,  H03F1/0238 ,  H03F3/2171 ,  H03F3/2178 ,  H03F3/45475 ,  H03F2200/138 ,  H03K5/01

Abstract: A generator for use with an electrosurgical device is provided. The generator has a gain stage electrically disposed between a first voltage rail and a second voltage rail, wherein the gain stage includes an input and an output. A voltage source operably coupled to the gain stage input and configured to provide an input signal thereto responsive to a drive control signal is also provided. The generator also has one or more sensors configured to sense an operational parameter of the amplifier and to provide a sensor signal corresponding thereto and a controller adapted to receive the sensor signal(s) and in response thereto provide a drive control signal to the voltage source. The generator has an amplifier output configured to supply an output voltage corresponding to the first voltage rail and the second voltage rail when the output of the gain stage falls between a voltage of the first voltage rail and a voltage of the second voltage rail and is configured to supply a peak voltage output when the voltage output is falls greater than the voltage of the first voltage rail or less than the voltage of the second voltage rail.

公开(公告)号：US11135002B2

公开(公告)日：2021-10-05

申请号：US16258823

申请日：2019-01-28

Applicant: COVIDIEN LP

Inventor： James A. Gilbert

IPC: A61B18/00 ,  A61B18/12 ,  A61B18/14

Abstract: An electrosurgical generator is disclosed. The electrosurgical generator includes: a power supply configured to output DC power; an inverter coupled to the power supply, the inverter including a plurality of switching elements; and a controller coupled to the inverter and configured to signal the inverter to simultaneously generate based on the DC power a radio frequency heating waveform and an electroporation waveform.

公开(公告)号：US10105172B2

公开(公告)日：2018-10-23

申请号：US14445745

申请日：2014-07-29

Applicant: COVIDIEN LP

Inventor： Joshua H. Johnson ,  James A. Gilbert

IPC: A61B18/12 ,  H02M7/5387 ,  H02M7/48 ,  A61B18/00

Abstract: The present disclosure is directed to an electrosurgical generator including a resonant inverter having an H-bridge and a tank. The generator also includes a pulse width modulation (PWM) controller configured to output PWM timing signals to the H-bridge. A switch is configured to select a modality from among a plurality of modalities and the PWM controller adjusts a frequency of the PWM timing signals based on the selected modality.

公开(公告)号：US09918775B2

公开(公告)日：2018-03-20

申请号：US14636422

申请日：2015-03-03

Applicant: Covidien LP

Inventor： James A. Gilbert

IPC: A61B18/12 ,  H03H17/00 ,  H03H17/02 ,  H03H21/00 ,  A61B18/14 ,  H03H17/04 ,  A61B18/00

CPC classification number: A61B18/1206 ,  A61B18/1233 ,  A61B18/1445 ,  A61B2018/00648 ,  A61B2018/00702 ,  A61B2018/00827 ,  A61B2018/00892 ,  H03H17/0027 ,  H03H17/0251 ,  H03H17/0283 ,  H03H21/0012 ,  H03H2017/0472

Abstract: The disclosed electrosurgical systems and methods accurately determine the power actually applied to a load by using equalizers to calibrate the power measurements. The electrosurgical systems include an electrosurgical generator and an electrosurgical instrument coupled to the electrosurgical generator through an electrosurgical cable. The electrosurgical generator includes an electrical energy source, voltage and current detectors, equalizers that estimate the voltage and current applied to a load, and a power calculation unit that calculates estimated power based upon the estimated voltage and current. The methods of calibrating an electrosurgical generator involve applying a resistive element across output terminals of the electrosurgical generator, applying a test signal to the resistive element, measuring the magnitude and phase angle of voltage and current components of the test signal within the electrosurgical generator, estimating the magnitude and phase angle of the voltage and current at the resistive element using equalizers, and determining gain correction factors and minimum phase angles for the equalizers.

公开(公告)号：US09839470B2

公开(公告)日：2017-12-12

申请号：US14754855

申请日：2015-06-30

Applicant: COVIDIEN LP

Inventor： James A. Gilbert ,  Daniel A. Friedrichs

IPC: A61B18/12 ,  H02M7/5387 ,  A61B18/14 ,  A61B18/00 ,  H02M1/00

CPC classification number: A61B18/1233 ,  A61B18/1402 ,  A61B18/1445 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00726 ,  A61B2018/00732 ,  A61B2018/00761 ,  A61B2018/00779 ,  A61B2018/00791 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1253 ,  A61B2018/126 ,  A61B2018/1286 ,  H02M7/53871 ,  H02M2001/007

Abstract: A system for minimizing neuromuscular stimulation includes a converter, an inverter, and a controller. The converter is configured to output a dc waveform and includes at least one first switching element operated at a first duty cycle. The inverter is coupled to the converter and includes at least one second switching element operated at a second duty cycle. The inverter is configured to invert the DC waveform to generate an electrosurgical pulse waveform. The controller is coupled to the converter and the inverter, and is configured to control the first duty cycle to adjust a magnitude of the electrosurgical pulse waveform and the second duty cycle to adjust at least one property of the electrosurgical pulse waveform to minimize neuromuscular stimulation.

公开(公告)号：US09186202B2

公开(公告)日：2015-11-17

申请号：US14341279

申请日：2014-07-25

Applicant: COVIDIEN LP

Inventor： James A. Gilbert

IPC: A61B18/18 ,  A61B18/12 ,  A61B18/14 ,  A61B18/00

CPC classification number: A61B18/1206 ,  A61B18/1233 ,  A61B18/14 ,  A61B18/1442 ,  A61B18/1477 ,  A61B2018/00827 ,  A61B2018/00892 ,  A61B2018/1425

Abstract: An electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. A power source operably couples to the electrosurgical generator and is configured to deliver power to one or more types of loads connected to the electrosurgical generator. The electrosurgical generator includes a controller including a microprocessor coupled to the electrosurgical generator and configured to control the output of the electrosurgical generator. A fiber optic connection circuit is in operative communication with the controller and includes one or more types of logic devices and one or more types of fiber optic channels. The fiber optic connection circuit is configured to mitigate leakage current associated with at least one of a plurality of components operatively associated with the electrosurgical generator by providing isolation.

Abstract translation: 提供电外科系统。 电外科系统包括适于向组织提供电外科能量的电外科发生器。 电源可操作地耦合到电外科发生器，并被配置为将功率输送到连接到电外科发生器的一种或多种类型的负载。 所述电外科发生器包括控制器，所述控制器包括耦合到所述电外科发生器并被配置为控制所述电外科发生器的输出的微处理器。 光纤连接电路与控制器可操作地通信，并且包括一种或多种类型的逻辑设备和一种或多种类型的光纤通道。 光纤连接电路被配置为通过提供隔离来减轻与电外科发生器可操作地相关联的多个部件中的至少一个相关联的泄漏电流。

公开(公告)号：US08569925B2

公开(公告)日：2013-10-29

申请号：US13784257

申请日：2013-03-04

Applicant: Covidien LP

Inventor： James A. Gilbert

IPC: H01L41/08

CPC classification number: A61N7/02 ,  A61B17/22012 ,  A61B17/320068 ,  A61B17/320092 ,  A61B2017/00106 ,  A61B2017/00146 ,  A61B2017/00199 ,  A61B2017/00734 ,  A61B2017/320072 ,  A61B2017/320078 ,  B06B1/0253 ,  B06B2201/76 ,  H04B11/00

Abstract: A method for measuring frequency response is provided that includes supplying ultrasonic energy to an ultrasonic device configured to impart energy to tissue, providing a drive signal and a noise signal, combining the drive signal and the noise signal to create a combined signal, amplifying the combined signal and providing the amplified signal to the ultrasonic device, receiving an output signal from the ultrasonic device and the noise signal, calculating a transfer function estimate based on the output signal and the noise signal, adjusting the drive signal generator based on the calculated transfer function estimate, and determining a phase difference by time aligning the noise signal in the output signal with the noise signal provided.

Abstract translation: 提供了一种用于测量频率响应的方法，其包括将超声能量提供给被配置为向组织赋予能量的超声波装置，提供驱动信号和噪声信号，组合驱动信号和噪声信号以产生组合信号， 信号，并将放大的信号提供给超声波装置，接收来自超声装置的输出信号和噪声信号，基于输出信号和噪声信号计算传递函数估计，基于计算的传递函数调整驱动信号发生器 估计并通过将输出信号中的噪声信号与所提供的噪声信号进行时间对准来确定相位差。

公开(公告)号：US10898257B2

公开(公告)日：2021-01-26

申请号：US15585308

申请日：2017-05-03

Applicant: COVIDIEN LP

Inventor： Joshua H. Johnson ,  James A. Gilbert

IPC: A61B18/12 ,  A61B18/16 ,  A61B18/00

Abstract: The present disclosure is directed to an electrosurgical generator including a tank configured to output energy and an H-bridge configured to drive the tank. The generator also includes a choke. The choke impedes a common mode current generated by the H-bridge and provides a leakage inductance for the tank.