公开(公告)号：US07799025B2

公开(公告)日：2010-09-21

申请号：US12183144

申请日：2008-07-31

申请人： Parris S. Wellman

发明人： Parris S. Wellman

IPC分类号： A61B18/18

CPC分类号： A61B18/1477 ,  A61B18/1492 ,  A61B18/16 ,  A61B2018/00083 ,  A61B2018/00357 ,  A61B2018/00363 ,  A61B2018/1425

摘要： Ablation systems and methods for treating atrial fibrillation utilizing RF energy are provided. The system generally includes a first conductive member having a shape which defines a desired lesion pattern or a portion of a desired lesion pattern, and a second conductive member effective to transmit ablative radiation to the first conductive member. The first conductive member is adapted to be positioned on a first tissue surface, and the second conductive member is adapted to be positioned on a second, opposed tissue surface. In use, ablative radiation is transmitted from the second conductive member through the tissue to the first conductive member to form a lesion having the desired lesion pattern.

摘要翻译： 提供了利用RF能量治疗房颤的消融系统和方法。 该系统通常包括具有限定期望的病变图案或期望损伤图案的一部分的形状的第一导电构件和有效将消融辐射传送到第一导电构件的第二导电构件。 第一导电构件适于定位在第一组织表面上，并且第二导电构件适于定位在第二相对的组织表面上。 在使用中，烧蚀辐射从第二导电构件通过组织传递到第一导电构件以形成具有期望损伤图案的损伤。

公开(公告)号：US20100217259A1

公开(公告)日：2010-08-26

申请号：US12681900

申请日：2008-05-14

申请人： Timo Strauss

发明人： Timo Strauss

IPC分类号： A61B18/18

CPC分类号： A61B18/1233 ,  A61B18/1477 ,  A61B18/16 ,  A61B2018/00607 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00875

摘要： The invention concerns an HF-surgery device for cutting and/or coagulating biological tissue and a method for same, which in operation monitors the patient skin contact of a connected neutral electrode having at least two separate contact surfaces. The HF-surgery device includes at least one parallel resonant circuit arranged in a patient circuit, at least one measurement energy source arranged in a measurement circuit galvanically separated from the patient circuit for producing a measurement voltage/current acting between the contact surfaces of the neutral electrode, and at least one measuring and computing unit which in operation determines by means of the measurement voltage/current a tissue impedance which is representative of the patient skin contact and which acts between the contact surfaces. An HF-current flows in the patient circuit which is closed in the cutting or coagulation operation and the measurement voltage which is independent of the HF-current can be produced in the measurement circuit. To provide an improved HF-surgery device it is provided according to the invention that the frequency of the measurement voltage source is substantially equal to a resonance frequency of the parallel resonant circuit.

摘要翻译： 本发明涉及用于切割和/或凝固生物组织的HF手术装置及其方法，其在操作中监测具有至少两个分开的接触表面的所连接的中性电极的患者皮肤接触。 HF手术装置包括布置在患者回路中的至少一个并联谐振电路，布置在与患者电路电流分离的测量电路中的至少一个测量能量源，用于产生在中性点的接触表面之间作用的测量电压/电流 电极和至少一个测量和计算单元，其在操作中通过测量电压/电流确定代表患者皮肤接触并且在接触表面之间作用的组织阻抗。 HF电流流入切断或凝结操作中封闭的患者回路，并且在测量电路中可以产生与HF电流无关的测量电压。 为了提供改进的HF手术装置，根据本发明提供了测量电压源的频率基本上等于并联谐振电路的谐振频率。

公开(公告)号：US20100211061A1

公开(公告)日：2010-08-19

申请号：US12371103

申请日：2009-02-13

申请人： Greg Leyh

发明人： Greg Leyh

IPC分类号： A61B18/18

CPC分类号： A61B18/1233 ,  A61B18/16 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00851

摘要： An electro-surgical system actively maintains an optimal heating profile at the electrode-patient contact surface under varying load resistivity, thereby reducing the risk of burns and maximizing patient comfort at a given power level. A set of temperature sensors is integrated within the electrode assembly of the electrosurgical system. The sensors are located both at the center and the edges of the electrode. The sensors are thermally coupled to the electrode-patient contact surface and have a time response that is short compared to the thermal time constraints of the tissue. Some degree of signal processing may take place at the sensor, inside the transducer assembly. As RF power is applied, a control loop monitors the temperature at the center and edges of the electrode. If the edge temperature of the electrode is high compared to its center temperature, then the control loop increases the operating frequency, effectively driving heat towards the center of the electrode. Conversely, if the edge temperature of the electrode is low compared to its center temperature, then the control loop decreases the operating frequency, effectively driving heat towards the edges of the electrode. By actively adjusting the operating frequency in this way, the control loop maintains any chosen heating profile at the electrode-patient contact surface.

摘要翻译： 电手术系统在变化的负载电阻下在电极 - 患者接触表面上主动地保持最佳加热曲线，从而降低在给定功率水平下灼伤的风险并最大化患者舒适度。 一组温度传感器集成在电外科系统的电极组件内。 传感器位于电极的中心和边缘。 传感器热耦合到电极 - 患者接触表面，并且具有与组织的热时间限制相比较短的时间响应。 一些程度的信号处理可能在传感器，传感器组件内部发生。 当施加RF功率时，控制回路监测电极中心和边缘处的温度。 如果电极的边缘温度比其中心温度高，则控制环路增加工作频率，有效地将热量驱向电极的中心。 相反，如果电极的边缘温度与其中心温度相比较低，则控制回路降低工作频率，有效地将热量驱向电极的边缘。 通过以这种方式主动调整工作频率，控制回路在电极 - 患者接触表面处保持任何所选择的加热曲线。

公开(公告)号：US20100185195A1

公开(公告)日：2010-07-22

申请号：US12750795

申请日：2010-03-31

申请人： James W. McPherson

发明人： James W. McPherson

IPC分类号： A61B18/16

CPC分类号： A61B18/16 ,  A61B18/1206 ,  A61B2018/00666 ,  A61B2018/00678 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00815 ,  A61B2018/00821 ,  A61N1/06

摘要： An electrosurgical return electrode is disclosed. The return electrode includes a return electrode pad having a patient-contacting surface configured to conduct electrosurgical energy and a sensor circuit coupled to the return electrode pad. The sensor circuit is configured to monitor at least one of a return electrode pad property and a tissue property to generate sensor data. The return electrode also includes a control circuit coupled to the return electrode pad and to the sensor circuit. The control circuits configured to receive and process sensor data from the sensor circuit and relay the processed sensor data to an electrosurgical energy source.

摘要翻译： 公开了电外科返回电极。 返回电极包括具有被配置为传导电外科能量的患者接触表面和耦合到返回电极垫的传感器电路的返回电极焊盘。 传感器电路被配置为监视返回电极焊盘属性和组织属性中的至少一个以产生传感器数据。 返回电极还包括耦合到返回电极焊盘和传感器电路的控制电路。 所述控制电路被配置为从所述传感器电路接收和处理传感器数据，并将经处理的传感器数据中继到电外科能量源。

公开(公告)号：US20100152726A1

公开(公告)日：2010-06-17

申请号：US12335679

申请日：2008-12-16

申请人： Hadar Cadouri ,  Philip M. Tetzlaff

发明人： Hadar Cadouri ,  Philip M. Tetzlaff

IPC分类号： A61B18/14

CPC分类号： A61B18/1402 ,  A61B18/1206 ,  A61B18/1233 ,  A61B18/148 ,  A61B18/16 ,  A61B2018/00345 ,  A61B2018/00404 ,  A61B2018/00577 ,  A61B2018/00619 ,  A61B2018/124 ,  A61B2018/1467 ,  A61B2018/1472 ,  A61B2218/002

摘要： Electrosurgical system with selective control of active and return electrodes. At least some of the illustrative embodiments are systems comprising an electrosurgical wand and an electrosurgical controller. The wand comprises a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand (one electrical lead electrically coupled to each electrode). The controller comprises a voltage generator and a control circuit coupled between the voltage generator and the electrodes of the wand. The control circuit is configured to: selectively electrically couple the active terminal singly and in combination to the electrodes of the wand; and selectively electrically couple the return terminal singly and in combination to electrodes of the wand.

摘要翻译： 电动手术系统，选择性控制主动和返回电极。 至少一些说明性实施例是包括电外科手术杆和电外科手术控制器的系统。 所述棒包括非导电外表面，设置在所述棒的远端上的至少三个电极以及从所述棒的近端延伸的至少三个电引线（电耦合到每个电极的一个电引线）。 控制器包括电压发生器和耦合在电压发生器和电极之间的控制电路。 控制电路被配置为：选择性地将有源端子电耦合到组合的电极与电极; 并且选择性地将返回端子单独地电耦合到组合的电极。

公开(公告)号：US20100145331A1

公开(公告)日：2010-06-10

申请号：US12705142

申请日：2010-02-12

申请人： Steven C. Chrisitian ,  David E. Francischelli ,  Adam A. Podbeliski ,  Daniel Charles Haeg ,  Marie T. Steinbrink ,  Roderick E. Briscoe ,  Tom O. Daigle

发明人： Steven C. Chrisitian ,  David E. Francischelli ,  Adam A. Podbeliski ,  Daniel Charles Haeg ,  Marie T. Steinbrink ,  Roderick E. Briscoe ,  Tom O. Daigle

IPC分类号： A61B18/14 ,  A61B18/18

CPC分类号： A61B18/14 ,  A61B1/0051 ,  A61B18/02 ,  A61B18/1206 ,  A61B18/1492 ,  A61B18/16 ,  A61B18/18 ,  A61B18/20 ,  A61B2018/00363 ,  A61B2018/00375 ,  A61B2018/00875 ,  A61B2018/1407 ,  A61B2018/1472 ,  A61B2218/002

摘要： Embodiments of the invention provide an ablation apparatus for ablating target tissue adjacent pulmonary veins of a patient. The ablation apparatus can include a tube capable of being advanced around the pulmonary veins to form a loop. The tube can receive or include electrodes to ablate target tissue. Some embodiments provide a loop ablation device, which may include a cannula and two or more electrode rods carrying two or more bipolar electrodes. The electrode rods can be advanced through the distal ends toward the proximal ends of the loop and toward the target tissue. The bipolar electrodes can receive energy to ablate the target tissue. The bipolar electrodes may be surrounded by the liquid within the cannula while ablating the target tissue. The loop ablation device can further include a rotating grasping mechanism coupled to the electrode rods.

摘要翻译： 本发明的实施例提供了一种用于消融患者的肺静脉附近的靶组织的消融装置。 消融装置可以包括能够围绕肺静脉前进以形成环的管。 管可以接收或包括用于烧蚀靶组织的电极。 一些实施例提供一种环路消融装置，其可以包括套管和两个或更多个承载两个或更多个双极电极的电极棒。 电极棒可以通过远端朝向环的近端并朝向目标组织前进。 双极电极可以接收能量以消融靶组织。 当消融靶组织时，双极电极可被插管内的液体包围。 环切除装置还可包括与电极棒连接的旋转夹持机构。

公开(公告)号：US07704249B2

公开(公告)日：2010-04-27

申请号：US11125613

申请日：2005-05-09

申请人： Jean Woloszko ,  Paul O. Davison

发明人： Jean Woloszko ,  Paul O. Davison

IPC分类号： A61B18/18

CPC分类号： A61B18/149 ,  A61B18/16

摘要： An electrosurgical system and method for ablating, resecting, or cutting body structures, with minimal or no damage to tissue adjacent to the treatment site. The system includes an electrosurgical probe having a shaft with a shaft distal end bifurcated to provide first and second arms. First and second electrode supports are disposed on the first and second arms, respectively. At least one active electrode, in the form of a loop or partial loop, is arranged between the first and second electrode supports. A return electrode, also in the form of a loop or partial loop, is arranged between the first and second electrode supports distal to the active electrode. The active and return electrodes are configured to promote substantially high electric field intensities and associated high current densities between the active portion and the target site when a high frequency voltage is applied to the electrodes. These high current densities are sufficient to break down the tissue by processes including molecular dissociation of tissue components. In one embodiment, the high frequency voltage imparts energy to the target site to effect the vaporization and volumetric removal of a layer of tissue without causing substantial tissue damage beyond the layer of tissue ablated. In another embodiment, a fragment of target tissue is removed, with minimal or no damage to surrounding tissue, by a process including the molecular dissociation of tissue components, and the tissue fragment is retrieved for biopsy.

摘要翻译： 一种电外科系统和方法，用于消融，切除或切割身体结构，对治疗部位附近的组织进行最少或没有损伤。 该系统包括电外科探头，其具有轴，轴的远端分叉以提供第一和第二臂。 第一和第二电极支撑件分别设置在第一和第二臂上。 在第一和第二电极支撑件之间布置有环形或部分环形式的至少一个有源电极。 也在回路或部分回路形式的返回电极布置在远离有源电极的第一和第二电极支撑件之间。 有源和返回电极被配置为当高频电压施加到电极时，在有源部分和目标部位之间促进基本上高的电场强度和相关联的高电流密度。 这些高电流密度足以通过包括组织成分的分子解离过程的组织分解。 在一个实施例中，高频电压向目标部位施加能量以实现组织层的蒸发和体积移除，而不会在烧蚀组织之外造成显着的组织损伤。 在另一个实施方案中，通过包括组织成分的分子解离的方法，去除对靶组织的片段，对周围组织的损伤最小或没有损伤，并且检索组织片段用于活组织检查。

公开(公告)号：US20100082026A1

公开(公告)日：2010-04-01

申请号：US12585457

申请日：2009-09-15

申请人： Richard James Curtis

发明人： Richard James Curtis

IPC分类号： A61B18/18

CPC分类号： A61B18/16 ,  A61B2018/00053 ,  A61B2018/00083 ,  A61B2018/00601 ,  A61B2018/00875

摘要： An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes.

摘要翻译： 电外科系统包括电外科器械和电外科发生器，所述仪器具有纵轴并且至少包括第一，第二和第三电极。 电极通过其间的一个或多个绝缘构件彼此隔开，第一和第三电极之间的间隔大于第一和第二电极之间的间隔。 电外科发生器包括能够产生凝血RF波形或切割RF波形的射频能源，并且具有分别连接到电外科器械的第一，第二和第三电极的第一和第三输出连接。 发电机还包括开关装置和控制器，所述控制器使得当选择切割RF波形时，切换装置将切割RF波形引导在第一和第二输出连接之间，从而引导第一和第二电极。 当选择凝结RF波形时，切换装置引导凝结RF波形在第一和第三输出连接之间，因此引导第一和第三电极。

公开(公告)号：US20090292281A1

公开(公告)日：2009-11-26

申请号：US12453008

申请日：2009-04-27

申请人： Alistair I. Fleming ,  Julian M. Ebbutt ,  Andrew E. Jenkins ,  Hollie Johnston ,  Rhodri G. James

发明人： Alistair I. Fleming ,  Julian M. Ebbutt ,  Andrew E. Jenkins ,  Hollie Johnston ,  Rhodri G. James

IPC分类号： A61B18/14

CPC分类号： A61B18/1445 ,  A61B17/32002 ,  A61B17/32053 ,  A61B18/16 ,  A61B2017/320024 ,  A61B2018/00005 ,  A61B2018/00083 ,  A61B2218/008

摘要： A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.

摘要翻译： 用于使患者的体腔内的组织变细的装置包括具有远端部分的固定管和位于管的远端的双极电外科电极组件。 电外科电极组件包括由绝缘构件隔开的第一和第二电极。 当将电外科切割电压施加到电极组件上，并且在管和组织之间开始相对运动时，在管内形成切断的组织芯，使得其可以从患者体腔移除。 该管包括双壁结构，其具有内壁，外壁和它们之间的气隙。 这种双壁结构减少了能够沿着管向近端行进的热量。

公开(公告)号：US20090287206A1

公开(公告)日：2009-11-19

申请号：US12465843

申请日：2009-05-14

申请人： Myong-Ki JUN

发明人： Myong-Ki JUN

IPC分类号： A61B18/18 ,  A61F7/00

CPC分类号： A61B18/1477 ,  A61B18/16 ,  A61B2018/00029 ,  A61B2018/00083 ,  A61B2018/1253 ,  A61B2018/1425 ,  A61B2218/002

摘要： The present invention relates to an electrode for an electrosurgical unit for the use in ablating and necrosing a living tissue by RF electric energy. The present invention provides an electrode for an electrosurgical unit, including: a hollow electrode formed in an elongated hollow tube shape, a non-insulating region of a predetermined length being formed on one side of which, an insulating region being formed on an outer surface of which other than the non-insulating region; a saline solution circulation structure that supplies pressurized saline solution for cooling a living tissue which is in contact with the hollow electrode from the outside of the living tissue to the inside of the hollow electrode, and discharges the pressurized saline solution from the inside of the hollow electrode to the outside of the living tissue; and one or more saline solution discharge holes formed in the non-insulating region of the hollow electrode to discharge some of the circulating pressurized saline solution to the living tissue which is in contact with the hollow electrode.

摘要翻译： 本发明涉及一种电外科手术用电极，用于通过射频电能消融和坏死生物体组织。 本发明提供一种电外科单元用电极，其特征在于，包括：中空电极，其形成为细长的中空管状，其一侧形成有规定长度的非绝缘区域，绝缘区域形成在外表面 非绝缘区域以外的其他部分; 盐水溶液循环结构，其从生物体组织的外部向中空电极的内部供给用于将与中空电极接触的活体组织的加压盐水溶液从中空电极的内部排出， 电极到活体组织的外部; 以及形成在中空电极的非绝缘区域中的一个或多个盐水溶液排出孔，以将一些循环的加压盐溶液排放到与中空电极接触的生物体组织。