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    Systems and methods for estimating tissue parameters using surgical devices
    1.
    发明公开
    Systems and methods for estimating tissue parameters using surgical devices 有权
    Systeme zur Bestimmung von Parametern mittels chirurgischer Vorrichtungen

    公开(公告)号：EP2853222A1

    公开(公告)日：2015-04-01

    申请号：EP14186605.3

    申请日：2014-09-26

    申请人： Covidien LP

    发明人： Wham, Robert H.

    IPC分类号： A61B18/14

    CPC分类号： A61B18/1445 ,  A61B18/1233 ,  A61B2018/00577 ,  A61B2018/00648 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00803 ,  A61B2018/00815 ,  A61B2018/00821 ,  A61B2018/162

    摘要： Systems and methods for estimating tissue parameters, including mass of tissue to be treated and a thermal resistance scale factor between the tissue and an electrode of an energy delivery device, are disclosed. The method includes sensing tissue temperatures, estimating a mass of the tissue and a thermal resistance scale factor between the tissue and an electrode, and controlling an electrosurgical generator based on the estimated mass and the estimated thermal resistance scale factor. The method may be performed iteratively and noniteratively. The iterative method may employ a gradient descent algorithm that iteratively adds a derivative step to the estimates of the mass and thermal resistance scale factor until a condition is met. The non-iterative method includes selecting maximum and minimum temperature differences and estimating the mass and the thermal resistance scale factor based on a predetermined reduction point from the maximum temperature difference to the minimum temperature difference.

    摘要翻译： 公开了用于估计组织参数的系统和方法，包括要处理的组织的质量和组织与能量输送装置的电极之间的热阻比例因子。 该方法包括感测组织温度，估计组织的质量和组织和电极之间的热阻比例因子，以及基于估计的质量和估计的热阻比例因子来控制电外科生成器。 该方法可以迭代地且非依赖地执行。 迭代方法可以使用梯度下降算法，其迭代地将衍生步骤添加到质量和热阻比例因子的估计，直到满足条件。 非迭代方法包括基于从最大温差到最小温度差的预定减小点来选择最大和最小温度差并估计质量和热阻比例因子。

    Temperature based ablation completeness algorithm
    2.
    发明公开
    Temperature based ablation completeness algorithm 审中-公开
    基于温度的消融完整性算法

    公开(公告)号：EP2666425A2

    公开(公告)日：2013-11-27

    申请号：EP13168721.2

    申请日：2013-05-22

    申请人： Covidien LP

    发明人： Ladtkow, Casey M.

    IPC分类号： A61B18/14

    CPC分类号： A61B18/1477 ,  A61B2018/0016 ,  A61B2018/00577 ,  A61B2018/00672 ,  A61B2018/00708 ,  A61B2018/00797 ,  A61B2018/00803 ,  A61B2018/00886 ,  A61B2018/1432

    摘要： A system and method for determining completion of an ablation procedure is provided. An electrosurgical generator provides an electrosurgical energy source to an electrode probe assembly. The generator is connected to a thermal feedback assembly that includes at least one temperature sensor assembly. The generator includes a computer configured to (1) measure a time of energy delivered to the target tissue, (2) receive a temperature reading from the thermal feedback assembly, (3) estimate a size of an ablation volume based on the temperature reading, a distance between the electrode probe assembly and each temperature sensor assembly, and the measured time, (4) calculate a growth rate of the ablation volume based on the estimated size. The computer may also determine the ablation procedure is complete when the growth rate is less than or equal to a threshold.

    摘要翻译： 提供了用于确定消融程序的完成的系统和方法。 电外科发生器向电极探针组件提供电外科能量源。 发生器连接到包括至少一个温度传感器组件的热反馈组件。 该发生器包括计算机，该计算机被配置为（1）测量输送到目标组织的能量的时间，（2）从热反馈组件接收温度读数，（3）基于温度读数估计消融体积的大小， 电极探针组件和每个温度传感器组件之间的距离以及测量的时间，（4）基于估计的尺寸计算消融体积的生长速率。 当增长率小于或等于阈值时，计算机还可确定消融程序完成。

    Temperature distribution determining apparatus
    3.
    发明公开
    Temperature distribution determining apparatus 审中-公开
    Vorrichtung zur Bestimmung der Temperaturverteilung

    公开(公告)号：EP2387963A1

    公开(公告)日：2011-11-23

    申请号：EP10162922.8

    申请日：2010-05-17

    申请人： Koninklijke Philips Electronics N.V. ,  Philips Intellectual Property & Standards GmbH

    发明人： Kuhn, Michael, H.

    IPC分类号： A61B18/00 ,  A61B18/12 ,  A61N7/00 ,  A61B17/00

    CPC分类号： A61N7/00 ,  A61B5/015 ,  A61B8/06 ,  A61B8/085 ,  A61B8/463 ,  A61B8/469 ,  A61B8/48 ,  A61B8/483 ,  A61B8/485 ,  A61B8/488 ,  A61B8/5261 ,  A61B8/58 ,  A61B18/00 ,  A61B18/1206 ,  A61B2017/00084 ,  A61B2018/00803 ,  A61B2562/0204 ,  G01K11/24 ,  G01K13/002 ,  G01K2213/00

    摘要： The invention relates to a temperature distribution determining apparatus for determining a temperature distribution within an object caused by applying energy to the object. A temperature distribution measuring unit (6, 7) measures a spatially and temporally dependent first temperature distribution in the object (3), while the energy is applied to the object (3) such that the object (3) is heated to a temperature within a first temperature range, and a temperature distribution estimating unit (5) estimates a spatially and temporally dependent second temperature distribution in the object (3) within a second temperature range, which is different to the first temperature range, based on the spatial and temporal dependence of the measured first temperature distribution. Since temperature distributions can be obtained not only in the first temperature range, but also in the second temperature range, the overall temperature range, in which the temperature distribution can be determined, can be increased.

    摘要翻译： 本发明涉及一种用于确定通过向对象施加能量而引起的物体内的温度分布的温度分布确定装置。 温度分布测量单元（6,7）测量物体（3）中的空间和时间依赖的第一温度分布，同时将能量施加到物体（3），使得物体（3）被加热到物体 第一温度范围和温度分布估计单元（5）基于空间和时间估计在与第一温度范围不同的第二温度范围内的物体（3）中的空间和时间上依赖的第二温度分布 测量的第一温度分布的依赖性。 由于不仅可以在第一温度范围内而且在第二温度范围内获得温度分布，所以可以提高可以确定温度分布的总体温度范围。