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公开(公告)号：US5891095A
公开(公告)日：1999-04-06
申请号：US807111
申请日：1996-12-05
IPC分类号： A61B17/00 , A61B17/22 , A61B18/00 , A61B18/12 , A61B18/14 , A61B19/00 , A61F2/02 , A61M25/01 , A61N1/05 , A61N1/40 , A61M37/00
CPC分类号： A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B18/1492 , A61M25/0133 , A61N1/05 , A61N1/403 , A61B18/148 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00392 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/1213 , A61B2018/124 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M25/0147 , A61M25/0158
摘要： A method is provided for applying electrical energy to a tissue structure within a patient's body. The method includes positioning an electrosurgical probe adjacent to the tissue structure so that an electrode array including a plurality of isolated electrode terminals is brought into at least partial contact with the body structure. A high frequency voltage is then applied between each electrode terminal within the electrode array and a common, return electrode. Current flow from the electrode terminals is selectively limited to minimize low electrical impedance paths emanating from the electrode array. The present invention takes advantage of the differences in electrical properties between a target tissue and the surrounding conductive liquid (e.g. isotonic saline irrigant) in the region immediately adjacent to the electrode array to ablate the target tissue while minimizing overheating of the surrounding liquid.
摘要翻译： 提供了一种将电能施加到患者身体内的组织结构的方法。 该方法包括将电外科探头定位在组织结构附近，使得包括多个隔离电极端子的电极阵列与身体结构至少部分接触。 然后在电极阵列内的每个电极端子和公共的返回电极之间施加高频电压。 选择性地限制来自电极端子的电流，以最小化从电极阵列发出的低电阻抗路径。 本发明利用与电极阵列紧邻的区域中的靶组织和周围导电液体（例如等渗盐水冲洗液）之间的电特性的差异来消融靶组织，同时最小化周围液体的过热。
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92.发明授权
公开(公告)号：US5888198A
公开(公告)日：1999-03-30
申请号：US766382
申请日：1996-12-05
IPC分类号： A61B17/00 , A61B17/22 , A61B18/00 , A61B18/12 , A61B18/14 , A61B19/00 , A61F2/02 , A61M25/01 , A61N1/05 , A61N1/40 , A61B1/00
CPC分类号： A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B18/1492 , A61M25/0133 , A61N1/05 , A61N1/403 , A61B18/148 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00392 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/1213 , A61B2018/124 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M25/0147 , A61M25/0158
摘要： An electrosurgical system comprises an electrosurgical probe and an electrosurgical power supply for ablation and resection of soft tissue in the presence of electrically conductive fluids, such as isotonic saline. In one embodiment, the probe includes a shaft having an electrode array with a plurality of electrically isolated electrode terminals and a return electrode spaced proximally from the electrode array. The power supply includes a plurality of current limiting elements for limiting current based on impedance between the electrode terminals and the return electrode. By applying high frequency voltage to the electrode array, target tissue may be cut or ablated while heat dissipation through low impedance paths, such as saline, is minimized. The power supply has an operating frequency less than 400 kHz, usually about 100 kHz, for limiting current penetration into the tissue.
摘要翻译： 电外科系统包括电外科探针和电外科电源，用于在存在导电流体如等渗盐水的情况下消融和切除软组织。 在一个实施例中，探针包括具有电极阵列的轴，所述电极阵列具有多个电隔离的电极端子和与电极阵列向近侧间隔的返回电极。 电源包括用于基于电极端子和返回电极之间的阻抗限制电流的多个限流元件。 通过向电极阵列施加高频电压，可以将目标组织切割或消融，同时通过诸如盐水的低阻抗路径的散热最小化。 电源的工作频率小于400 kHz，通常约为100 kHz，用于限制电流渗入组织。
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公开(公告)号：US5766153A
公开(公告)日：1998-06-16
申请号：US760768
申请日：1996-12-05
IPC分类号： A61B17/00 , A61B17/22 , A61B18/00 , A61B18/12 , A61B18/14 , A61B19/00 , A61F2/02 , A61M25/01 , A61N1/05 , A61N1/40 , A61M37/00
CPC分类号： A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B18/1492 , A61M25/0133 , A61N1/05 , A61N1/403 , A61B18/148 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00392 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/1213 , A61B2018/124 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M25/0147 , A61M25/0158
摘要： An electrosurgical system for applying electrical energy to a tissue structure within a patient's body comprises an electrosurgical probe and one or more high frequency power supplies. The probe comprises a shaft having an electrode array of isolated electrode terminals at its distal end. The terminals are each coupled to one of a multiplicity of current limiting elements, such as inductors. The inductors, together with the inherent capacitance of the load, form a series resonant output circuit having a resonant frequency greater than the operating frequency of the power supply.
摘要翻译： 将电能施加到患者体内的组织结构的电外科系统包括电外科探头和一个或多个高频电源。 探头包括在其远端具有隔离电极端子的电极阵列的轴。 端子各自耦合到多个电流限制元件中的一个，例如电感器。 电感器与负载的固有电容一起形成具有大于电源工作频率的谐振频率的串联谐振输出电路。
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公开(公告)号：US5697536A
公开(公告)日：1997-12-16
申请号：US746800
申请日：1996-11-18
IPC分类号： A61B18/12 , A61B17/00 , A61B17/22 , A61B18/00 , A61B18/14 , A61B19/00 , A61F2/02 , A61M1/00 , A61M3/02 , A61M25/01 , A61M37/00
CPC分类号： A61B18/1402 , A61B18/12 , A61B18/1206 , A61B18/148 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B18/1492 , A61M25/0133 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/0047 , A61B2018/00476 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/00982 , A61B2018/1213 , A61B2018/124 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M25/0147 , A61M25/0158 , A61M3/0283
摘要： An electrosurgical probe (10) comprises a shaft (13) having an electrode array (12) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (55, 56) recessed from its distal end and enclosed within an insulating jacket (18). The return electrode defines an inner passage (83) electrically connected to both the return electrode and the electrode array for passage of an electrically conducting liquid (50). By applying high frequency voltage to the electrode array and the return electrode, the electrically conducting liquid generates a current flow path between the target site and the return electrode so that target tissue may be cut or ablated. The probe is particularly useful in dry environments, such as the mouth or abdominal cavity, because the electrically conducting liquid provides the necessary return current path between the return electrode and the target site.
摘要翻译： 电外科探针（10）包括在其远端具有电极阵列（12）的轴（13）和在其近端处的连接器（19），用于将电极阵列耦合到高频电源（28）。 轴包括从其远端凹入并封闭在绝缘套（18）内的返回电极（55,56）。 返回电极限定了电连接到返回电极和电极阵列两者以便导电液体（50）通过的内部通道（83）。 通过向电极阵列和返回电极施加高频电压，导电液体在目标部位和返回电极之间产生电流流动路径，从而可以切割或烧蚀靶组织。 探针在干燥环境（例如口腔或腹腔）中特别有用，因为导电液体在返回电极和靶位点之间提供必要的返回电流路径。
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95.发明授权
公开(公告)号：US5366443A
公开(公告)日：1994-11-22
申请号：US958977
申请日：1992-10-09
CPC分类号： A61B18/149 , A61B18/1492 , A61M25/0133 , A61B18/1402 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/0016 , A61B2018/00196 , A61B2018/00392 , A61B2018/00642 , A61B2018/00678 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00886 , A61B2018/1213 , A61B2018/126 , A61B2018/1497 , A61B2018/162 , A61B2090/378 , A61B2218/002 , A61F2/2493
摘要： A catheter comprises a catheter body having a proximal end, a distal end, and an electrode array disposed near the distal end. The electrode array includes a plurality of isolated electrode terminals. The electrode array and a common electrode are connected to a high frequency power supply, and the common electrode may be located on the catheter, may be secured separately to a patient's skin, or may be formed as part of a movable guidewire. By contacting the electrode array against a target location in the patient's body, the target location may be selectively heated, with current density being contacted at the points of contact between the electrode terminals and the tissue or stenotic material. For example, by positioning the common electrode within a stenotic region and contacting a leading surface of the stenotic region with the electrode array, the stenotic material can be heated by applying a high frequency voltage between the electrode array and the common electrode. The stenotic region can thus be recanalized by advancing the distal end of the catheter body through the heated stenotic material.
摘要翻译： 导管包括具有近端，远端和设置在远端附近的电极阵列的导管本体。 电极阵列包括多个隔离电极端子。 电极阵列和公共电极连接到高频电源，并且公共电极可以位于导管上，可以单独固定到患者的皮肤上，或者可以形成为可移动导丝的一部分。 通过将电极阵列接触患者体内的目标位置，可以选择性地加热目标位置，其中电流密度在电极端子和组织或狭窄材料之间的接触点处接触。 例如，通过将公共电极定位在狭窄区域内并使狭窄区域的前导表面与电极阵列接触，可以通过在电极阵列和公共电极之间施加高频电压来加热狭窄材料。 因此，可以通过使导管主体的远端前进通过加热的狭窄材料来再狭窄狭窄区域。
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公开(公告)号：US07507236B2
公开(公告)日：2009-03-24
申请号：US11697606
申请日：2007-04-06
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B18/042 , A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/148 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00106 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/0047 , A61B2018/00476 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00738 , A61B2018/00755 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/00982 , A61B2018/1213 , A61B2018/124 , A61B2018/1246 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2090/3782 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61F2/95 , A61M25/0133 , A61M25/0147 , A61M25/0158
摘要： An electrosurgical probe (10) comprises a shaft (13) having an electrode array (58) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (56) recessed from its distal end and enclosed within an insulating jacket (18). The return electrode defines an inner passage (83) electrically connected to both the return electrode and the electrode array for passage of an electrically conducting liquid (50). By applying high frequency voltage to the electrode array and the return electrode, the electrically conducting liquid generates a current flow path between the return electrode and the electrode array so that target tissue may be cut or ablated. The probe is particularly useful in dry environments, such as the mouth or abdominal cavity, because the electrically conducting liquid provides the necessary return current path between the active and return electrodes.
摘要翻译： 电外科探针（10）包括在其远端具有电极阵列（58）的轴（13）和在其近端处的连接器（19），用于将电极阵列耦合到高频电源（28）。 轴包括从其远端凹入并封闭在绝缘护套（18）内的返回电极（56）。 返回电极限定了电连接到返回电极和电极阵列两者以便导电液体（50）通过的内部通道（83）。 通过向电极阵列和返回电极施加高频电压，导电液体在返回电极和电极阵列之间产生电流流动路径，从而可以切割或烧蚀靶组织。 探针在干燥环境（例如口腔或腹腔）中特别有用，因为导电液体在主动和返回电极之间提供必要的返回电流路径。
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公开(公告)号：US20090069807A1
公开(公告)日：2009-03-12
申请号：US12272186
申请日：2008-11-17
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B18/042 , A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/148 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00106 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/0047 , A61B2018/00476 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00738 , A61B2018/00755 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/00982 , A61B2018/1213 , A61B2018/124 , A61B2018/1246 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2090/3782 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61F2/95 , A61M25/0133 , A61M25/0147 , A61M25/0158
摘要： An electrosurgical probe (10) comprises a shaft (13) having an electrode array (58) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (56) recessed from its distal end and enclosed within an insulating jacket (18). The return electrode defines an inner passage (83) electrically connected to both the return electrode and the electrode array for passage of an electrically conducting liquid (50). By applying high frequency voltage to the electrode array and the return electrode, the electrically conducting liquid generates a current flow path between the return electrode and the electrode array so that target tissue may be cut or ablated. The probe is particularly useful in dry environments, such as the mouth or abdominal cavity, because the electrically conducting liquid provides the necessary return current path between the active and return electrodes.
摘要翻译： 电外科探针（10）包括在其远端具有电极阵列（58）的轴（13）和在其近端处的连接器（19），用于将电极阵列耦合到高频电源（28）。 轴包括从其远端凹入并封闭在绝缘护套（18）内的返回电极（56）。 返回电极限定了电连接到返回电极和电极阵列两者以便导电液体（50）通过的内部通道（83）。 通过向电极阵列和返回电极施加高频电压，导电液体在返回电极和电极阵列之间产生电流流动路径，从而可以切割或烧蚀靶组织。 探针在干燥环境（例如口腔或腹腔）中特别有用，因为导电液体在主动和返回电极之间提供必要的返回电流路径。
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公开(公告)号：US07468059B2
公开(公告)日：2008-12-23
申请号：US11673386
申请日：2007-02-09
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/148 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/0047 , A61B2018/00476 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/00982 , A61B2018/1213 , A61B2018/124 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M25/0133 , A61M25/0147 , A61M25/0158
摘要： A system and method for surface tissue ablation on the patient's outer skin, such as the epidermis or the underlying dermis. An electrosurgical probe (130) comprises a shaft (132) having an array of active electrodes (136) on its distal tip and a connector (134) at its proximal end for coupling the electrode array to a high frequency power supply. An electrically conducting liquid is directed along a fluid flow path (142) past a return electrode surface (138) to the target site to provide a current flow path between the target site and the return electrode. High frequency voltage is then applied to the active and return electrodes so that an electric current flows from the active electrode, through a layer of vapor formed at the tip of the electrode, and to the return electrode through the current flow path provided by the electrically conducting liquid. The high frequency voltage will preferably be sufficient to establish high electric field densities between the active electrode array and the epidermal tissue to thereby induce molecular breakdown or disintegration of several cell layers of the tissue.
摘要翻译： 用于患者外皮上的表面组织消融的系统和方法，例如表皮或潜在真皮。 电外科探头（130）包括轴（132），该轴（132）具有在其远侧末端上的有源电极（136）的阵列和在其近端处的连接器（134），用于将电极阵列耦合到高频电源。 导电液体沿着流体流动路径（142）被引导通过返回电极表面（138）到目标位置，以在目标位置和返回电极之间提供电流流动路径。 然后将高频电压施加到有源和返回电极，使得电流从有源电极流过形成在电极尖端处的蒸气层，并通过电流提供的电流流动路径流到返回电极 导电液体。 优选地，高频电压足以在活性电极阵列和表皮组织之间建立高电场密度，从而诱导组织的几个细胞层的分子分解或分解。
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公开(公告)号：US07429260B2
公开(公告)日：2008-09-30
申请号：US11612995
申请日：2006-12-19
IPC分类号： A61B18/14
CPC分类号： A61B18/148 , A61B18/12 , A61B18/1206 , A61B18/14 , A61B18/1402 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B18/1492 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/00434 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/1213 , A61B2018/124 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1467 , A61B2018/1472 , A61B2018/1497 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61M3/0283 , A61M25/0133 , A61M25/0147 , A61M25/0158
摘要： The present invention provides systems and methods for selectively applying electrical energy to a target location within a patient's body, particularly including tissue in the spine. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals in the presence of electrically conductive fluid to contract collagen fibers within the tissue structures. In one aspect of the invention, a system and method is provided for treating herniated or swollen discs within a patient's spine by applying sufficient electrical energy to the disc tissue to contract or shrink the collagen fibers within the nucleus pulposis. This causes the pulposis to shrink and withdraw from its impingement on the spinal nerve.
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公开(公告)号：US07201750B1
公开(公告)日：2007-04-10
申请号：US09314247
申请日：1999-05-18
IPC分类号： A61B18/14
CPC分类号： A61B18/1492 , A61B18/042 , A61B18/12 , A61B18/1206 , A61B18/1402 , A61B18/148 , A61B18/1482 , A61B18/1485 , A61B18/149 , A61B2017/00026 , A61B2017/00084 , A61B2017/00097 , A61B2017/00101 , A61B2017/00106 , A61B2017/00247 , A61B2017/00292 , A61B2017/003 , A61B2017/22001 , A61B2017/22038 , A61B2018/00029 , A61B2018/00083 , A61B2018/00119 , A61B2018/0016 , A61B2018/00178 , A61B2018/00196 , A61B2018/00327 , A61B2018/00392 , A61B2018/0047 , A61B2018/00476 , A61B2018/00505 , A61B2018/00577 , A61B2018/00583 , A61B2018/00601 , A61B2018/00642 , A61B2018/0066 , A61B2018/00678 , A61B2018/00702 , A61B2018/00726 , A61B2018/00738 , A61B2018/00755 , A61B2018/00761 , A61B2018/00791 , A61B2018/00797 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00886 , A61B2018/00982 , A61B2018/1213 , A61B2018/124 , A61B2018/1246 , A61B2018/1253 , A61B2018/126 , A61B2018/1273 , A61B2018/1407 , A61B2018/1467 , A61B2018/1472 , A61B2018/162 , A61B2018/165 , A61B2090/378 , A61B2090/3782 , A61B2218/002 , A61B2218/007 , A61F2/2493 , A61F2/95 , A61M25/0133 , A61M25/0147 , A61M25/0158
摘要： An electrosurgical probe (10) comprises a shaft (13) having an electrode array (58) at its distal end and a connector (19) at its proximal end for coupling the electrode array to a high frequency power supply (28). The shaft includes a return electrode (56) recessed from its distal end and enclosed within an insulating jacket (18). The return electrode defines an inner passage (83) electrically connected to both the return electrode and the electrode array for passage of an electrically conducting liquid (50). By applying high frequency voltage to the electrode array and the return electrode, the electrically conducting liquid generates a current flow path between the return electrode and the electrode array so that target tissue may be cut or ablated. The probe is particularly useful in dry environments, such as the mouth or abdominal cavity, because the electrically conducting liquid provides the necessary return current path between the active and return electrodes.
摘要翻译： 电外科探针（10）包括在其远端具有电极阵列（58）的轴（13）和在其近端处的连接器（19），用于将电极阵列耦合到高频电源（28）。 轴包括从其远端凹入并封闭在绝缘护套（18）内的返回电极（56）。 返回电极限定了电连接到返回电极和电极阵列两者以便导电液体（50）通过的内部通道（83）。 通过向电极阵列和返回电极施加高频电压，导电液体在返回电极和电极阵列之间产生电流流动路径，从而可以切割或烧蚀靶组织。 探针在干燥环境（例如口腔或腹腔）中特别有用，因为导电液体在主动和返回电极之间提供必要的返回电流路径。
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