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    Electrosurgical devices including transverse electrode configurations
    2.
    发明授权
    Electrosurgical devices including transverse electrode configurations 有权

    公开(公告)号：US10342601B2

    公开(公告)日：2019-07-09

    申请号：US14559032

    申请日：2014-12-03

    Applicant: COVIDIEN LP

    Inventor： Craig A. Keller ,  Guillaume Lessard ,  Richard M. Ferrell

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

    Abstract: An end effector assembly for an electrosurgical device includes first and second jaw members movable between spaced-apart and approximated positions for grasping tissue therebetween. The jaw members cooperate to define a tissue grasping area. One or both of the jaw members includes an inner electrode. One or both of the jaw members includes first and second outer electrodes disposed on either side of the inner electrode. The inner and outer electrodes are configured to conduct energy through tissue grasped within the tissue grasping area to seal tissue. The inner and outer electrodes define different configurations such that, upon conduction of energy through tissue grasped within the tissue grasping area, tissue disposed adjacent the outer electrodes is boiled before boiling of tissue disposed adjacent the inner electrodes.

    Energy-based medical devices
    5.
    发明授权
    Energy-based medical devices 有权

    公开(公告)号：US10595926B2

    公开(公告)日：2020-03-24

    申请号：US15623447

    申请日：2017-06-15

    Applicant: COVIDIEN LP

    Inventor： Craig A. Keller

    IPC: A61B18/12 ,  A61B18/08 ,  A61B18/14 ,  A61B18/00

    Abstract: A medical device includes an energy-generating unit configured to produce energy for conduction through tissue to treat tissue. Waste heat produced by the energy-generating unit during energy production is conducted to tissue to facilitate treating tissue.

    Electrosurgical devices including transverse electrode configurations
    6.
    发明授权
    Electrosurgical devices including transverse electrode configurations 有权

    公开(公告)号：US10278768B2

    公开(公告)日：2019-05-07

    申请号：US14558988

    申请日：2014-12-03

    Applicant: COVIDIEN LP

    Inventor： Craig A. Keller ,  Guillaume Lessard ,  Richard M. Ferrell

    IPC: A61B18/14 ,  A61B18/00

    Abstract: An end effector assembly for an electrosurgical device includes first and second jaw members movable between spaced-apart and approximated positions. The jaw members define opposed tissue-contacting surfaces that cooperate to define a tissue grasping area within which tissue is grasped when the jaw members are moved to the approximated position. At least one of the jaw members includes an interior electrode and at least one of the jaw members includes first and second exterior electrodes. The interior and exterior electrodes are configured to conduct energy through tissue grasped within the tissue grasping area to seal tissue. The interior electrodes are disposed interiorly of outer bounds of the tissue grasping area, while the exterior electrodes are disposed exteriorly. As a result, upon conduction of energy through tissue grasped within the tissue grasping area, tissue disposed adjacent the exterior electrodes is boiled before boiling of tissue disposed adjacent the interior electrodes.

    Systems and methods for arc detection and drag adjustment
    8.
    发明授权
    Systems and methods for arc detection and drag adjustment 有权

    公开(公告)号：US10653471B2

    公开(公告)日：2020-05-19

    申请号：US15354322

    申请日：2016-11-17

    Applicant: COVIDIEN LP

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

    IPC: A61B18/10 ,  A61B18/12 ,  A61B18/14 ,  A61B18/00

    Abstract: Controlling a level of electrosurgical energy provided to tissue based on detected arcing patterns or impedance changes. The drag force imposed on an electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing and analyzing voltage and/or current waveforms of the electrosurgical energy. The current and/or voltage waveform analysis may involve calculating impedance based on the 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.

    Electrosurgical devices including transverse electrode configurations and methods relating to the same
    9.
    发明授权
    Electrosurgical devices including transverse electrode configurations and methods relating to the same 有权

    公开(公告)号：US10524853B2

    公开(公告)日：2020-01-07

    申请号：US16184443

    申请日：2018-11-08

    Applicant: Covidien LP

    Inventor： Craig A. Keller ,  Guillaume Lessard ,  Richard M. Ferrell

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

    Abstract: A method of sealing tissue includes providing an end effector assembly including first and second jaw members. One or both of the jaw members includes an interior electrode and one or both of the jaw members includes first and second exterior electrodes disposed on either side of the interior electrode. The method further includes grasping tissue between the first and second jaw members and conducting energy between the interior and exterior electrodes to seal tissue grasped between the first and second jaw members. During tissue sealing, tissue disposed adjacent the exterior electrodes boils faster than tissue disposed adjacent the interior electrodes.

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