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    Electrosurgical instrument
    43.
    发明授权
    Electrosurgical instrument 有权
    电外科器械

    公开(公告)号：US09198721B2

    公开(公告)日：2015-12-01

    申请号：US14564896

    申请日：2014-12-09

    Applicant: COVIDIEN LP

    Inventor： Joseph D. Brannan ,  Casey M. Ladtkow

    IPC: A61B18/04 ,  A61B18/14 ,  A61B18/18 ,  A61B18/00 ,  A61B18/12 ,  A61B19/00

    CPC classification number: A61B18/1477 ,  A61B18/1206 ,  A61B18/1815 ,  A61B2018/00077 ,  A61B2018/00601 ,  A61B2018/00607 ,  A61B2018/00875 ,  A61B2018/00958 ,  A61B2018/1273 ,  A61B2018/1823 ,  A61B2018/1853 ,  A61B2018/1869 ,  A61B2018/1884 ,  A61B2090/065

    Abstract: An electrosurgical instrument includes an elongated housing having proximal and distal ends. The proximal end is configured to couple to a source of electrosurgical energy via first and second channels extending along a length of the housing to the distal end thereof. The distal end includes a reflector having a dielectric load operably coupled thereto and configured to receive at least a portion of the first conductor therein. In a first mode of operation, electrosurgical energy is transmitted to the first channel and reflected from the reflector to electrosurgically treat tissue. The reflector is configured to receive at least a portion of the second channel therein. In a second mode of operation, electrosurgical energy is transmitted to the second channel to dissect tissue.

    Abstract translation: 电外科器械包括具有近端和远端的细长壳体。 近端构造成通过沿着壳体的长度延伸到其远端的第一和第二通道而耦合到电外科能源。 远端包括具有可操作地耦合到其上的介电负载并被配置为在其中容纳至少一部分第一导体的反射器。 在第一操作模式中，电外科手术能量被传递到第一通道并从反射器反射到电外科治疗组织。 反射器被配置为在其中接收第二通道的至少一部分。 在第二种操作模式中，将电外科能量传送到第二通道以解剖组织。

    Systems and methods for thermal ablation distortion detection
    46.
    发明授权
    Systems and methods for thermal ablation distortion detection 有权

    公开(公告)号：US11612429B2

    公开(公告)日：2023-03-28

    申请号：US15995037

    申请日：2018-05-31

    Applicant: Covidien LP

    Inventor： Joseph D. Brannan ,  Anthony B. Ross ,  Casey M. Ladtkow

    IPC: A61B18/14 ,  A61B18/12 ,  A61B18/00 ,  A61B90/00 ,  A61M5/158

    Abstract: Ablation systems and methods detect and address distortion caused by a variety of factors. A method includes measuring a temperature curve at target tissue; applying ablation energy to the target tissue; determining a peak temperature on the temperature curve; if the peak temperature is greater than the predetermined peak temperature, determining a time at which the temperature curve crosses to a lower temperature; and if the determined time is greater than a predetermined time, generating a message indicating that the target tissue was successfully ablated. Another method includes determining a distance between a remote temperature probe and an ablation probe, applying ablation energy to target tissue, measuring temperature at the remote temperature probe, estimating ablation size based on the determined distance and the temperature measured by the remote temperature probe, and determining whether the target tissue is successfully ablated based on the estimated ablation size.

    Flexible microwave catheters for natural or artificial lumens
    47.
    发明授权
    Flexible microwave catheters for natural or artificial lumens 有权

    公开(公告)号：US11234765B2

    公开(公告)日：2022-02-01

    申请号：US16524674

    申请日：2019-07-29

    Applicant: Covidien LP

    Inventor： Joseph D. Brannan ,  Jason A. Case ,  Casey M. Ladtkow ,  Kurt R. Smith

    IPC: A61B18/18 ,  A61N5/02 ,  A61B17/00 ,  A61B18/14 ,  A61B18/00 ,  A61B90/10

    Abstract: A method for forming a resonating structure within a body lumen, the method including advancing a flexible microwave catheter into a body lumen of a patient, the flexible microwave catheter including a radiating portion at the distal end of the flexible microwave catheter, the radiating portion configured to receive microwave energy, and at least one centering device proximate the radiating portion configured to deploy radially outward from the flexible microwave catheter; positioning the radiating portion near tissue of interest; deploying the at least one centering device radially outward from the flexible microwave catheter within the body lumen such that a longitudinal axis of the radiating portion is substantially parallel with and at a fixed distance from a longitudinal axis of the body lumen near the targeted tissue; and delivering microwave energy to the radiating portion such that a circumferentially balanced resonating structure is formed with the body lumen.

    Flexible microwave catheters for natural or artificial lumens
    49.
    发明授权
    Flexible microwave catheters for natural or artificial lumens 有权

    公开(公告)号：US10321956B2

    公开(公告)日：2019-06-18

    申请号：US15192402

    申请日：2016-06-24

    Applicant: COVIDIEN LP

    Inventor： Joseph D. Brannan ,  Gene H. Arts ,  Arnold V. Decarlo ,  Casey M. Ladtkow ,  William O. Reid, Jr.

    IPC: A61B18/18 ,  A61N5/02 ,  A61B17/00 ,  A61B18/14 ,  A61B18/00 ,  A61B90/10

    Abstract: A microwave delivery device, including a coaxial feedline having an inner conductor, an inner dielectric insulator coaxially disposed about the inner conductor, and an outer conductor coaxially disposed about the inner dielectric, and a radiating portion operably coupled to a distal end. The radiating portion includes a radiating portion inner conductor operable coupled to and extending from a distal end of the coaxial feedline inner conductor, a shielding outer conductor helically wrapped about the radiating portion inner conductor and operably coupled to the coaxial feedline outer conductor; and a shielding dielectric positioned between the radiating portion inner conductor and the shielding outer conductor wherein the width of the shielding outer conductor varies according to the longitudinal position thereof along the coaxial feedline inner conductor, and a cap operably coupled to a distal end of the radiating portion inner conductor and the shielding outer conductor to provide an electrical connection therebetween.

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