公开(公告)号：US09851316B2

公开(公告)日：2017-12-26

申请号：US14533510

申请日：2014-11-05

申请人： Sean D. Lubner ,  Jeunghwan Choi ,  Harishankar Natesan ,  Christopher E. Dames ,  John C. Bischof

发明人： Sean D. Lubner ,  Jeunghwan Choi ,  Harishankar Natesan ,  Christopher E. Dames ,  John C. Bischof

IPC分类号： G01N25/18 ,  A61B5/01 ,  A61B5/053 ,  G06F11/30 ,  A61B18/02 ,  A61B18/00

CPC分类号： G01N25/18 ,  A61B5/01 ,  A61B5/053 ,  A61B18/02 ,  A61B2018/00708 ,  A61B2018/00791 ,  A61B2018/00875

摘要： A sensing system uses three-omega sensing to determine a spatial profile of thermal property within a sample. The sensing system electrically powers a lossy electrical conductor at different driving frequencies. The different driving frequencies produce different penetration depths within the sample. The sensing system takes multiple measurements of thermal property at the different driving frequencies. Each measurement is associated with a different penetration depth, and therefore is averaged over a differently-sized volume within the sample. The sensing system performs a fit on the multiple measurements of material thermal property versus material geometry. If one of thermal property or geometry is known beforehand, then the fit can determine the other. The lossy electrical conductor can be formed on a polymeric flexible membrane, on a probe that can be placed at a suitable location in a patient's body, and/or directly onto a heating or cooling element.

公开(公告)号：US20150127294A1

公开(公告)日：2015-05-07

申请号：US14533510

申请日：2014-11-05

申请人： Sean D. Lubner ,  Jeunghwan Choi ,  Harishankar Natesan ,  Christopher E. Dames ,  John C. Bischof

发明人： Sean D. Lubner ,  Jeunghwan Choi ,  Harishankar Natesan ,  Christopher E. Dames ,  John C. Bischof

IPC分类号： G01N25/18 ,  A61B18/02

CPC分类号： G01N25/18 ,  A61B5/01 ,  A61B5/053 ,  A61B18/02 ,  A61B2018/00708 ,  A61B2018/00791 ,  A61B2018/00875

摘要： A sensing system uses three-omega sensing to determine a spatial profile of thermal property within a sample. The sensing system electrically powers a lossy electrical conductor at different driving frequencies. The different driving frequencies produce different penetration depths within the sample. The sensing system takes multiple measurements of thermal property at the different driving frequencies. Each measurement is associated with a different penetration depth, and therefore is averaged over a differently-sized volume within the sample. The sensing system performs a fit on the multiple measurements of material thermal property versus material geometry. If one of thermal property or geometry is known beforehand, then the fit can determine the other. The lossy electrical conductor can be formed on a polymeric flexible membrane, on a probe that can be placed at a suitable location in a patient's body, and/or directly onto a heating or cooling element.

摘要翻译： 感测系统使用三维感测来确定样品内的热性质的空间分布。 传感系统为不同驱动频率的有损电导体供电。 不同的驾驶频率在样品内产生不同的穿透深度。 感测系统在不同的驱动频率下进行多个热性能测量。 每个测量与不同的穿透深度相关联，因此在样本中的不同大小的体积上进行平均。 传感系统对材料热性质与材料几何形状的多重测量结果进行了对比。 如果预先知道热性质或几何形状之一，则拟合可以确定另一种。 有损电导体可以形成在聚合物柔性膜上，探针上，该探针可以放置在患者体内的适当位置和/或直接放置在加热或冷却元件上。