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    Devices and methods for cooling microwave antennas
    11.
    发明授权
    Devices and methods for cooling microwave antennas 有权

    公开(公告)号：US10405921B2

    公开(公告)日：2019-09-10

    申请号：US15296394

    申请日：2016-10-18

    Applicant: COVIDIEN LP

    Inventor： Roman Turovskiy ,  Steven Kim ,  Mani N. Prakash ,  Francesca Rossetto

    IPC: A61B18/18 ,  A61N5/04 ,  A61B17/00 ,  A61B18/00

    Abstract: Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.

    High-strength microwave antenna assemblies
    12.
    发明授权
    High-strength microwave antenna assemblies 有权
    高强度微波天线组件

    公开(公告)号：US09549779B2

    公开(公告)日：2017-01-24

    申请号：US15005504

    申请日：2016-01-25

    Applicant: COVIDIEN LP

    Inventor： Mani N. Prakash ,  Francesca Rossetto ,  Anthony C. Lee ,  Steven Kim ,  Ted Su ,  Jonathan L. Glassman

    IPC: A61B18/18 ,  A61B18/00

    CPC classification number: A61B18/1815 ,  A61B18/18 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00136 ,  A61B2018/00142 ,  A61B2018/00178 ,  A61B2018/00577 ,  A61B2018/1823 ,  A61B2018/1838 ,  A61B2018/1853 ,  A61B2018/1869 ,  A61B2018/1892 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/49016 ,  Y10T29/49018

    Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.

    Abstract translation: 本文描述了各种高强度微波天线组件。 微波天线具有通过馈线连接到发电源（例如发电机）的辐射部分。 天线是偶极天线，其辐射部分的远端是锥形的并且终止于尖端，以允许直接插入组织。 天线刚度来自将远端和近端辐射部分置于预应力状态，通过螺纹或重叠接头组装它们，或将内部导体固定地附接到远端部分。 内导体通过例如焊接，钎焊，焊接或通过粘合剂固定到远端部分。 由硬介电材料（例如陶瓷）制成的接合构件可以放置在两个部分之间，并且可以具有均匀或不均匀的形状以适应不同的天线设计。 电扼流圈也可用于将回流电流包含在天线的远端。

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