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1. 发明授权

US06533781B2 Electrosurgical instrument 有权
标题翻译：电外科器械
公开(公告)号：US06533781B2
公开(公告)日：2003-03-18
申请号：US09751223
申请日：2000-12-29
申请人： Warren Paul Heim , Michael Olichney , James L. Brassell
发明人： Warren Paul Heim , Michael Olichney , James L. Brassell
IPC分类号： A61B1814
CPC分类号： A61B18/1402 , A61B18/14 , A61B2017/0088 , A61B2018/00005 , A61B2018/00083 , A61B2018/00101 , A61B2018/00107 , A61B2018/00136 , A61B2018/1412
摘要： An improved electrosurgical instrument and method is disclosed for reducing smoke generation at a surgical site. The electrosurgical instrument comprises a metal body having an outer insulating layer to reduce thermal/electrical discharge from non-functional portions of the instrument. In one aspect of the invention, an insulating layer having a thermal conductance of about 1.2 W/cm2° K and a dielectric withstand strength of at least about 50 volts is employed. Such insulating layer may advantageously comprise silicon and/or carbon. In another aspect of the invention, the metal body is provided to have a thermal conductivity of at least about 0.35 W/cm° K, and may advantageously comprise a metal selected from the group: gold, silver, aluminum, copper tantalum, tungsten, columbium and molybdenum. In yet a further aspect, the metal body may include an intermediate layer that defines a peripheral edge portion of reduced cross-section (e.g., about 0.001 inches thick or less) for electrosurgical signal transmission. Such intermediate layer may comprise a metal having a melting point of at least about 2600° F. Heat sink means may be included in various embodiments to establish a thermal gradient away from functional portions of the instrument (i.e., by removing heat from the metal body). In one embodiment, the heat sink means may comprise a phase change material that changes from a first phase to a second phase upon absorption of thermal energy from the metal body.
摘要翻译：公开了一种改进的电外科器械和方法，用于减少外科手术部位的烟雾产生。电外科器械包括具有外绝缘层的金属体，以减少来自仪器的非功能部分的热/电放电。在本发明的一个方面，采用具有约1.2W / cm 2 K的热导率和至少约50伏的介电耐受强度的绝缘层。这种绝缘层可以有利地包括硅和/或碳。在本发明的另一方面，提供金属体以具有至少约0.35W / cm·K的热导率，并且可以有利地包括选自金，银，铝，铜钽，钨，铌和钼。在另一方面，金属体可以包括限定用于电外科信号传输的减小的横截面（例如，约0.001英寸厚或更小）的周边边缘部分的中间层。这种中间层可以包括熔点为至少约2600°F的金属。散热装置可以包括在各种实施例中以建立远离仪器的功能部分的热梯度（即，通过从金属体去除热量）。在一个实施例中，散热装置可以包括在从金属体吸收热能时从第一相变为第二相的相变材料。

2. 发明授权

US6074387A Electrosurgical system for reducing/removing eschar accumulations on electrosurgical instruments 失效
标题翻译：电外科器械减少/去除焦ar积累的电外科系统
公开(公告)号：US6074387A
公开(公告)日：2000-06-13
申请号：US951982
申请日：1997-10-15
申请人： Warren Paul Heim , Scott Allan Miller, III , James L. Brassell
发明人： Warren Paul Heim , Scott Allan Miller, III , James L. Brassell
IPC分类号： A61B18/00 , A61B18/12 , A61L2/03 , G01N21/89 , A61B17/39
CPC分类号： G01N21/89 , A61B18/12 , A61B18/1206 , A61B2018/0066
摘要： An electrosurgical system is disclosed that applies electrical energy to obtain a predetermined surgical effect, while also reducing eschar deposits on a working surface of an electrosurgical instrument, producing an eschar deposit which is easily removed from the working surface and/or facilitating removal of eschar deposits during a cleaning procedure. Such benefits may be realized by providing a negative bias on the working surface relative to a return path to source during electrosurgical procedures and/or during a cleaning procedure which may include contacting the working surface with an electrically conductive liquid.
摘要翻译：公开了一种电外科系统，其应用电能以获得预定的手术效果，同时还减少电外科器械的工作表面上的焦痂沉积物，产生易于从工作表面移除和/或促进焦炭沉积物的去除的焦痂沉积物在清洁过程中。这样的益处可以通过在电外科程序期间和/或在清洁过程期间相对于源的返回路径在工作表面上提供负偏压来实现，其可以包括使工作表面与导电液体接触。

3. 发明授权

US06287305B1 Electrosurgical instrument 失效
标题翻译：电外科器械
公开(公告)号：US06287305B1
公开(公告)日：2001-09-11
申请号：US08997365
申请日：1997-12-23
申请人： Warren Paul Heim , Michael Olichney
发明人： Warren Paul Heim , Michael Olichney
IPC分类号： A61B1814
CPC分类号： A61B18/1402 , A61B2018/00005 , A61B2018/00083 , A61B2018/00101
摘要： An improved electrosurgical instrument and method is disclosed for reducing smoke generation at a surgical site. The electrosurgical instrument comprises a metal body having an outer insulating layer to reduce thermal/electrical discharge from non-functional portions of the instrument. In one aspect of the invention, an insulating layer having a thermal conductance of about 1.2 W/cm2° K and a dielectric withstand strength of at least about 50 volts is employed. Such insulating layer may advantageously comprise silicon and/or carbon. In another aspect of the invention, the metal body is provided to have a thermal conductivity of at least about 0.35 W/cm° K, and may advantageously comprise a metal selected from the group: gold, silver, aluminum, and copper. Heat sink means may be included in various embodiments to establish a thermal gradient away from functional portions of the instrument (i.e., by removing heat from the metal body). In one embodiment, the heat sink means may comprise a phase change material that changes from a first phase to a second phase upon absorption of thermal energy from the metal body.
摘要翻译：公开了一种改进的电外科器械和方法，用于减少外科手术部位的烟雾产生。电外科器械包括具有外绝缘层的金属体，以减少来自仪器的非功能部分的热/电放电。在本发明的一个方面，采用具有约1.2W / cm 2 K的热导率和至少约50伏的介电耐受强度的绝缘层。这种绝缘层可以有利地包括硅和/或碳。在本发明的另一方面，提供金属体以具有至少约0.35W / cm·K的热导率，并且可以有利地包括选自金，银，铝和铜的金属。散热装置可以包括在各种实施例中以建立远离仪器的功能部分的热梯度（即，通过从金属体去除热量）。在一个实施例中，散热装置可以包括在从金属体吸收热能时从第一相变为第二相的相变材料。

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