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    Electrosurgical jaw structure for controlled energy delivery
    62.
    发明授权
    Electrosurgical jaw structure for controlled energy delivery 有权
    用于受控能量输送的电外科钳口结构

    公开(公告)号：US06929644B2

    公开(公告)日：2005-08-16

    申请号：US10032867

    申请日：2001-10-22

    Applicant: Csaba Truckai ,  James A. Baker ,  Bruno Strul ,  John H. Shadduck

    Inventor： Csaba Truckai ,  James A. Baker ,  Bruno Strul ,  John H. Shadduck

    IPC: A61B18/14 ,  A61B18/12

    CPC classification number: A61B18/1442 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/0063 ,  A61B2018/00809

    Abstract: A working end of a surgical instrument that carries first and second jaws for delivering energy to tissue. In a preferred embodiment, at least one jaw of the working end defines a tissue-engagement plane that contacts the targeted tissue. The cross-section of the engagement plane reveals that it defines a surface conductive portion that overlies a variably resistive matrix of a temperature-sensitive resistive material or a pressure-sensitive resistive material. An interior of the jaw carries a conductive material or electrode that is coupled to an Rf source and controller. In an exemplary embodiment, the variably resistive matrix can comprise a positive temperature coefficient (PTC) material, such as a ceramic, that is engineered to exhibit a dramatically increasing resistance (i.e., several orders of magnitude) above a specific temperature of the material. In use, the engagement plane will apply active Rf energy to captured tissue until the point in time that the variably resistive matrix is heated to its selected switching range. Thereafter, current flow from the conductive electrode through the engagement surface will be terminated due to the exponential increase in the resistance of variably resistive matrix to provide instant and automatic reduction of Rf energy application. Further, the variably resistive matrix can effectively function as a resistive electrode to thereafter conduct thermal energy to the engaged tissue volume. Thus, the jaw structure can automatically modulate the application of energy to tissue between active Rf heating and passive conductive heating of captured tissue to maintain a target temperature level.

    Abstract translation: 手术器械的工作端，其携带用于将能量递送至组织的第一和第二钳口。 在优选实施例中，工作端的至少一个钳口限定了接触目标组织的组织接合平面。 接合平面的横截面显示它限定了覆盖在温度敏感电阻材料或压敏电阻材料的可变电阻矩阵上的表面导电部分。 钳口的内部承载耦合到Rf源和控制器的导电材料或电极。 在示例性实施例中，可变电阻矩阵可以包括正温度系数（PTC）材料，例如陶瓷，其被工程化以显示高于材料的特定温度的显着增加的电阻（即几个数量级）。 在使用中，接合平面将对被捕获的组织施加活性的Rf能量，直到可变电阻矩阵被加热到其选择的开关范围的时间点为止。 此后，由于可变电阻矩阵的电阻的指数增加，导电电极通过接合表面的电流将终止，以提供即时和自动降低Rf能量应用。 此外，可变电阻矩阵可以有效地用作电阻电极，之后将热能传导到被接合的组织体积。 因此，钳口结构可以自动调节被捕获组织的活性Rf加热和被动导电加热之间的能量对组织的应用以保持目标温度水平。

    Method and system for heating tissue with a bipolar instrument
    63.
    发明授权
    Method and system for heating tissue with a bipolar instrument 有权
    用双极仪器加热组织的方法和系统

    公开(公告)号：US06682527B2

    公开(公告)日：2004-01-27

    申请号：US09808096

    申请日：2001-03-13

    Applicant: Bruno Strul

    Inventor： Bruno Strul

    IPC: A61B1818

    CPC classification number: A61B18/1206 ,  A61B18/1445 ,  A61B2018/00577 ,  A61B2018/00666 ,  A61B2018/00678 ,  A61B2018/00761 ,  A61B2018/00875 ,  A61B2018/00886

    Abstract: Methods for heating tissue completely, thoroughly, and uniformly comprise delivering radio frequency energy through a bipolar surgical instrument having first and second jaws with first and second electrode members within the treatment region. Tissue is grasped between the first and second jaws of the bipolar instrument. The electrode members are energized at a power level to deliver electrical energy to and heat tissue between the first and second electrode members. The power level is increased at a predetermined rate from an initial level. The initial level and predetermined rate are selected to avoid creating a vapor layer and to permit an impedance increase to occur as a result of complete tissue desiccation. A tissue impedance may also be measured and compared to a preset impedance limit for terminating the power delivery when the measured impedance exceeds the impedance limit.

    Abstract translation: 完全，彻底和均匀地加热组织的方法包括通过具有第一和第二钳口的双极手术器械递送射频能量，其中处理区域内具有第一和第二电极部件。 组织被夹在双极仪器的第一和第二钳口之间。 电极构件以功率水平通电，以向第一和第二电极构件之间递送电能并加热组织。 功率电平以预定速率从初始电平增加。 选择初始水平和预定速率以避免产生蒸汽层并且由于完全的组织干燥而允许发生阻抗增加。 还可以测量组织阻抗，并将其与预设的阻抗极限进行比较，以在测量的阻抗超过阻抗极限时终止电力输送。

    Polymer embolic elements with metallic coatings for occlusion of vascular malformations
    65.
    发明授权
    Polymer embolic elements with metallic coatings for occlusion of vascular malformations 有权
    具有用于阻塞血管畸形的金属涂层的聚合物栓塞元件

    公开(公告)号：US06458127B1

    公开(公告)日：2002-10-01

    申请号：US09721812

    申请日：2000-11-24

    Applicant: Csaba Truckai ,  John H. Shadduck ,  Bruno Strul

    Inventor： Csaba Truckai ,  John H. Shadduck ,  Bruno Strul

    IPC: A61B1700

    CPC classification number: A61B17/12022 ,  A61B17/12113 ,  A61B17/12168 ,  A61B2017/12068

    Abstract: A system for occlusion of aneurysms comprising a class of polymer embolic elements that carry a conductive material to provide the element with a specified resistivity. The embolic element is introduced into a targeted vascular malformation from a catheter sleeve that carries an electrode arrangement at its distal terminus. After introducing any selected length of the embolic element into the vascular malformation to mechanically occlude the malformation, the physician delivers electrical current within a first selected power range to the electrode at the catheter terminus. The electrical current flows to the embolic element wherein the specified resistivity of the element controllably causes a selected thickness of coagulum to form about the surface of the embolic element to more fully occupy the volume of the malformation with occlusive material. A controller and feedback circuitry allow the embolic element to be maintained at a selected temperature to insure even build-up of the desired coagulative layer about the electrode, without risk of creating hot-spots within the aneurysm. Thereafter, the physician delivers electrical current at second higher power level to electrode arrangement to cause the embolic element to act as a fuse at the catheter terminus to divide any selected length of deployed embolic element from the remainder of the embolic element still within the catheter sleeve.

    Abstract translation: 一种用于闭塞动脉瘤的系统，其包括一类聚合物栓塞元件，所述聚合物栓塞元件携带导电材料以提供具有指定电阻率的元件。 栓塞元件从导管套管引入目标血管畸形，导管套管在其远端终端带有电极装置。 在将任何选定长度的栓塞元件引入血管畸形以机械地堵塞畸形之后，医生在导管终端处将电流在第一选定的功率范围内传送到电极。 电流流向栓塞元件，其中该元件的规定电阻率可控制地导致凝块的选定厚度围绕栓塞元件的表面形成，以更充分地占据闭塞材料的畸形体积。 控制器和反馈电路允许栓塞元件保持在选定的温度，以确保围绕电极均匀地堆积所需的凝固层，而不会在动脉​​瘤内产生热点。 此后，医生将第二较高功率电平的电流传送到电极装置，以使栓塞元件作为导管终端处的保险丝，将任何选定长度的展开的栓塞元件与仍在导管套筒内的栓塞元件的其余部分分开 。

    Surgical instrument for ablation and aspiration
    66.
    发明授权
    Surgical instrument for ablation and aspiration 有权
    消融和抽吸手术器械

    公开(公告)号：US06379350B1

    公开(公告)日：2002-04-30

    申请号：US09412878

    申请日：1999-10-05

    Applicant: Hugh R. Sharkey ,  Bruno Strul ,  Daren L. Stewart ,  John Ashley ,  Ramiro L. Reyes

    Inventor： Hugh R. Sharkey ,  Bruno Strul ,  Daren L. Stewart ,  John Ashley ,  Ramiro L. Reyes

    IPC: A61B1818

    CPC classification number: A61B18/1402 ,  A61B2018/00011 ,  A61B2018/00083 ,  A61B2018/00136 ,  A61B2018/00577 ,  A61B2018/00589 ,  A61B2018/00595 ,  A61B2018/00601 ,  A61B2018/00625 ,  A61B2018/0091 ,  A61B2018/1253 ,  A61B2018/126 ,  A61B2018/1435 ,  A61B2018/162 ,  A61B2218/002 ,  A61B2218/007 ,  A61B2218/008

    Abstract: An electrosurgical aspiration instrument that permits aspiration of an area being treated by the instrument. The instrument is coupled at a proximal end to a power source and includes an energy application surface area at a distal end. The power source supplied energy to the energy application surface area such that the distal end of the instrument may apply energy to the treatment area to modify the characteristics of biological material, such as biological tissue in the area. An aspiration lumen is formed through the instrument with an opening through the energy application surface area. The energy application surface area is configured to reduce blockage of the opening. Accordingly, aspiration may be performed simultaneously with electrosurgical treatment whereby unwanted matter such as by-products, biological debris and excess fluid is removed from the treatment area. The electrosurgical aspiration instrument also permits both functions to be performed at different times, with the advantage of not requiring instruments to be switched on during the treatment procedure or removed from the treatment site.

    Abstract translation: 一种允许吸入由仪器处理的区域的电外科抽吸仪器。 仪器在近端耦合到电源并且包括在远端处的能量施加表面区域。 电源向能量施加表面区域供应能量，使得仪器的远端可以向处理区域施加能量，以改变生物材料（例如该区域中的生物组织）的特性。 通过仪器形成通过能量施加表面区域的开口的吸入腔。 能量施加表面积被配置为减少开口的阻塞。 因此，抽吸可以与电外科治疗同时进行，从而从处理区域除去诸如副产物，生物碎片和过量流体的不需要的物质。 电外科抽吸仪器还允许在不同时间执行两个功能，其优点是在治疗过程中不需要打开仪器或从治疗部位移除。

    Thermal angioplasty system
    70.
    发明授权
    Thermal angioplasty system 失效
    热血管成形术系统

    公开(公告)号：US5498261A

    公开(公告)日：1996-03-12

    申请号：US811024

    申请日：1991-12-20

    Applicant: Bruno Strul

    Inventor： Bruno Strul

    IPC: A61B17/22 ,  A61M29/02 ,  A61B5/00

    CPC classification number: A61M25/104 ,  A61B2017/22001 ,  A61B2017/22038 ,  A61M2205/057 ,  A61M2205/36 ,  A61M2230/50

    Abstract: A system for thermal angioplasty provides electrical power to a heating coil located inside a dilatation balloon, receives a signal from a sensor at the coil indicating its temperature and also receives signals from balloon sensors indicating the temperature at their respective positions. An isolation transformer is used to provide RF power and the sensor signals are optically coupled to provide increased electrical isolation for the patient. The heating coil temperature sensor signal is compared to high and low temperature limits and if either is exceeded, a fault signal is generated. The sensor signals from the balloon are compared to predetermined high temperature limits and if exceeded, fault signals are generated. The current drawn from the battery is compared to a predetermined current level and if exceeded, a fault signal is also generated. Upon generation of any of the fault signals, the electrical power to the heating coil is interrupted by fault detection circuitry. An RF ON reset switch is provided to prevent the inadvertent application of RF power to the heating coil. Materials used in the connectors and in the RF generator for connections to the catheter electrical leads are compatible with those leads to avoid a thermocouple effect.

    Abstract translation: 用于热血管成形术的系统为位于扩张球囊内的加热线圈提供电力，从线圈处的传感器接收指示其温度的信号，并且还从气球传感器接收指示其各自位置处的温度的信号。 隔离变压器用于提供RF功率，并且传感器信号被光学耦合以为患者提供增强的电隔离。 将加热线圈温度传感器信号与高温和低温限制进行比较，如果超过，则产生故障信号。 将来自球囊的传感器信号与预定的高温限制进行比较，如果超过，则产生故障信号。 将从电池抽出的电流与预定电流电平进行比较，如果超过，则还产生故障信号。 当产生任何故障信号时，加热线圈的电力被故障检测电路中断。 提供RF ON复位开关，以防止RF功率无意中对加热线圈的应用。 在连接器和RF发生器中用于连接到导管电引线的材料与这些引线兼容以避免热电偶效应。

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