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44 条记录 (耗时 0.013 秒)

    Systems and methods for arc detection and drag adjustment
    21.
    发明公开
    Systems and methods for arc detection and drag adjustment 有权
    用于电弧检测和张力调节系统

    公开(公告)号：EP2777581A1

    公开(公告)日：2014-09-17

    申请号：EP14159837.5

    申请日：2014-03-14

    申请人： Covidien LP

    发明人： Wham, Robert H. ,  Gilbert, James A. ,  Keller, Craig A. ,  Roberts, Brian L.

    IPC分类号： A61B18/12 ,  A61B18/00

    CPC分类号： A61B18/1206 ,  A61B18/1402 ,  A61B2018/00702 ,  A61B2018/00755 ,  A61B2018/00779 ,  A61B2018/00827 ,  A61B2018/00869 ,  A61B2018/00892 ,  A61B2018/1213

    摘要： The systems and methods of the present disclosure detect arcing patterns or impedance changes and adjust the level of electrosurgical energy provided to tissue based on the detected arcing patterns or impedance changes. In embodiments, the drag force imposed on the electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the detected arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing voltage and/or current waveforms of the electrosurgical energy and analyzing the sensed voltage and/or current waveforms. The current and/or voltage waveform analysis may involve calculating impedance based on the sensed voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms.

    Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator
    22.
    发明公开
    Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator 有权
    发电机系统

    公开(公告)号：EP2777579A1

    公开(公告)日：2014-09-17

    申请号：EP14158041.5

    申请日：2014-03-06

    申请人： Covidien LP

    发明人： Gilbert, James A.

    IPC分类号： A61B18/12

    CPC分类号： G01R31/282 ,  A61B18/1206 ,  A61B18/1233 ,  A61B18/1402 ,  A61B18/1445

    摘要： 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.

    摘要翻译： 电外科发生器包括主要和测试源。 主源提供主信号，测试源提供测试信号。 电外科发生器包括输出电路和异常检测电路。 输出电路电耦合到初级和测试源。 输出电路分别接收主要和测试源的主要和测试信号。 输出电路电耦合到负载以向其提供主信号。 异常检测电路电耦合到输出电路，以检测作为测试信号的函数的异常。 异常检测电路还可以确定输出电路内的异常的位置。

    Inductively-coupled plasma device
    23.
    发明公开
    Inductively-coupled plasma device 有权
    感应耦合等离子体装置

    公开(公告)号：EP2317830A3

    公开(公告)日：2014-04-02

    申请号：EP10189033.3

    申请日：2010-10-27

    申请人： Covidien LP

    发明人： Gilbert, James A.

    IPC分类号： H05H1/46 ,  H01J37/32

    CPC分类号： H05H1/46 ,  H01J37/321 ,  H05H2001/245 ,  H05H2001/2468 ,  H05H2001/4667 ,  H05H2001/4697

    摘要： A plasma device configured to receive ionizable media is disclosed. The plasma device includes a first pair of dielectric substrates each having an inner surface and an outer surface. The first pair of dielectric substrates is disposed in spaced, parallel relation relative to one another with the inner surfaces thereof facing one another. The device also includes a first pair of spiral coils each disposed on the inner surface of the dielectric substrates. The first pair of spiral coils is configured to couple to a power source and configured to inductively couple to an ionizable media passed therebetween to ignite the ionizable media to form a plasma effluent.

    System for multi-pole phase-shifted radio frequency application
    24.
    发明授权
    System for multi-pole phase-shifted radio frequency application 有权
    用于多极移相射频应用的系统

    公开(公告)号：EP2366351B1

    公开(公告)日：2018-04-04

    申请号：EP10179305.7

    申请日：2010-09-24

    申请人： Covidien LP

    发明人： Gilbert, James A.

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

    CPC分类号： A61B18/1206 ,  A61B18/1402 ,  A61B18/1445 ,  A61B2018/0016

    摘要： An electrosurgical generator is disclosed. The generator includes a power supply operable to generate a DC voltage and a multi-pole, phase-shifted, pulse-width and/or frequency modulated RF output stage coupled to the power supply. The RF output stage includes a plurality of dual-pole circuits, each of the plurality of dual-pole circuits including first and second pairs of switching components. The generator also includes a controller configured to drive the first and second pairs of switching components of each of the plurality of dual-pole circuits at a predetermined phase-shifted frequency.

    System and method for improved start-up of self-oscillating electro-mechanical surgical devices
    26.
    发明公开
    System and method for improved start-up of self-oscillating electro-mechanical surgical devices 审中-公开
    的系统和方法改进的初始，自振荡，机电手术设备

    公开(公告)号：EP2371309A3

    公开(公告)日：2016-12-14

    申请号：EP11160388.2

    申请日：2011-03-30

    申请人： Covidien LP

    发明人： Gilbert, James A.

    IPC分类号： A61B17/32 ,  A61B17/00

    CPC分类号： A61B17/320092 ,  A61B2017/00017 ,  A61B2017/0015

    摘要： An oscillating circuit for determining a resonant frequency of an electro-mechanical oscillating device and for driving the electro-mechanical oscillating device at the determined resonant frequency includes a driving circuit and a start-up, impetus injection circuit. The driving circuit is configured to receive one or more reference signals and further configured to provide a driving signal related to the reference signals to the electro-mechanical oscillating device. The start-up, impetus injection circuit is operably coupled to the electro-mechanical oscillating device and configured to selectively provide a start-up excitation signal to the electro-mechanical oscillation device. The start-up, impetus injection circuit is activated upon start-up of the oscillating circuit to drive the electro-mechanical oscillation device and the driving circuit determines a resonant frequency by measuring a parameter related to the resonant frequency of the electro-mechanical oscillating device.

    Radiofrequency amplifier impedance optimization
    29.
    发明公开
    Radiofrequency amplifier impedance optimization 审中-公开
    Funkfrequenzverstärker-Impedanzoptimierung

    公开(公告)号：EP2862532A2

    公开(公告)日：2015-04-22

    申请号：EP14185719.3

    申请日：2014-09-22

    申请人： Covidien LP

    发明人： Johnson, Joshua H. ,  Gilbert, James A.

    IPC分类号： A61B18/12 ,  H02M7/5387 ,  H02M7/48

    CPC分类号： A61B18/1206 ,  A61B2018/00732 ,  A61B2018/00875 ,  H02M7/53871 ,  H02M2007/4815 ,  Y02B70/1441

    摘要： The present disclosure is directed to an electrosurgical generator (100) including a resonant inverter (102) having an H-bridge (104) and a tank (106). The generator also includes a pulse width modulation (PWM) controller (110) configured to output PWM timing signals to the H-bridge (104). A switch (134) is configured to select a modality from among a plurality of modalities and the PWM controller (110) adjusts a frequency of the PWM timing signals based on the selected modality.

    摘要翻译： 本公开涉及包括具有H桥（104）和罐（106）的谐振逆变器（102）的电外科发生器（100）。 发生器还包括被配置为向H桥（104）输出PWM定时信号的脉宽调制（PWM）控制器（110）。 开关（134）被配置为从多个模态中选择模态，并且PWM控制器（110）基于所选择的模态来调整PWM定时信号的频率。