Modeling a collapsed lung using CT data

    公开(公告)号:US11071591B2

    公开(公告)日:2021-07-27

    申请号:US16045996

    申请日:2018-07-26

    Applicant: COVIDIEN LP

    Abstract: A method of modeling lungs of a patient includes acquiring computed tomography data of a patient's lungs, storing a software application within a memory associated with a computer, the computer having a processor configured to execute the software application, executing the software application to differentiate tissue located within the patient's lung using the acquired CT data, generate a 3-D model of the patient's lungs based on the acquired CT data and the differentiated tissue, apply a material property to each tissue of the differentiated tissue within the generated 3-D model, generate a mesh of the 3-D model of the patient's lungs, calculate a displacement of the patient's lungs in a collapsed state based on the material property applied to the differentiated tissue and the generated mesh of the generated 3-D model, and display a collapsed lung model of the patient's lungs based on the calculated displacement of the patient's lungs.

    Devices and methods for cooling microwave antennas

    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

    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.

    Ablation system having multiple energy sources

    公开(公告)号:US10363097B2

    公开(公告)日:2019-07-30

    申请号:US15346013

    申请日:2016-11-08

    Applicant: Covidien LP

    Abstract: A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue.

    Energy delivery conduits for use with electrosurgical devices

    公开(公告)号:US10271903B2

    公开(公告)日:2019-04-30

    申请号:US15798910

    申请日:2017-10-31

    Applicant: COVIDIEN LP

    Abstract: A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly.

    LEAKY-WAVE ANTENNAS FOR MEDICAL APPLICATIONS
    35.
    发明申请

    公开(公告)号:US20190021793A1

    公开(公告)日:2019-01-24

    申请号:US16139501

    申请日:2018-09-24

    Applicant: Covidien LP

    Abstract: A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform.

    System and method for chemically cooling an ablation antenna

    公开(公告)号:US09603663B2

    公开(公告)日:2017-03-28

    申请号:US15063844

    申请日:2016-03-08

    Applicant: COVIDIEN LP

    CPC classification number: A61B18/1815 A61B2018/00023 A61B2018/00577

    Abstract: A method of performing an ablation procedure includes inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction.

    High-strength microwave antenna assemblies
    39.
    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

    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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