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    Jaw structure for electrosurgical instrument
    3.
    发明授权
    Jaw structure for electrosurgical instrument 有权
    电外科器械的颌骨结构

    公开(公告)号：US06905497B2

    公开(公告)日：2005-06-14

    申请号：US10453086

    申请日：2003-05-31

    申请人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    发明人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    IPC分类号： A61B18/14 ,  A61B18/12

    CPC分类号： A61B18/1442 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/0063

    摘要： An electrosurgical medical device for creating thermal welds in engaged tissue that provides general grasping and dissecting functionality. In an exemplary embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying electrosurgical energy delivery means. The jaw assembly, in one mode of operation, can be used for general grasping and dissecting purposes wherein the jaws close in a non-parallel manner so that the distalmost jaw tip only engage tissue with little movement of the actuator lever in the handle of the instrument. In another mode of operation, the jaw assembly closes close in a parallel manner under very high compression to enable tissue welding.

    摘要翻译： 一种用于在接合组织中产生热焊缝的电外科医疗装置，其提供一般的抓握和解剖功能。 在示例性实施例中，器械的至少一个钳口限定了携带电外科能量输送装置的组织接合平面。 钳口组件在一种操作模式中可用于一般的抓取和解剖目的，其中钳口以不平行的方式闭合，使得最远端的钳口尖端仅接合组织，致动器杠杆在手柄中几乎没有移动 仪器。 在另一种操作模式中，钳夹组件在非常高的压缩下以平行的方式闭合以实现组织焊接。

    Electrosurgical instrument and method of use
    6.
    发明授权
    Electrosurgical instrument and method of use 有权
    电外科仪器及使用方法

    公开(公告)号：US07311709B2

    公开(公告)日：2007-12-25

    申请号：US10448478

    申请日：2003-05-30

    申请人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    发明人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    IPC分类号： A61B18/12

    CPC分类号： A61B18/1442 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/0063 ,  A61B2018/00654 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00809 ,  A61B2018/1467

    摘要： An electrosurgical medical device and method for creating thermal welds in engaged tissue. In one embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying a variable resistive body of a positive temperature coefficient material that has a selected decreased electrical conductance at each selected increased temperature thereof over a targeted treatment range. The variable resistive body can be engineered to bracket a targeted thermal treatment range, for example about 60° C. to 80° C., at which tissue welding can be accomplished. In one mode of operation, the engagement plane will automatically modulate and spatially localize ohmic heating within the engaged tissue from Rf energy application across micron-scale portions of the engagement surface. In another mode of operation, a variable resistive body will focus conductive heating in a selected portion of the engagement surface.

    摘要翻译： 一种用于在接合组织中产生热焊缝的电外科医疗装置和方法。 在一个实施例中，仪器的至少一个钳口限定了携带正温度系数材料的可变电阻体的组织接合平面，其在目标治疗范围内的每个选定的升高温度下具有选定的降低的电导率。 可变电阻体可以被设计成支撑目标热处理范围，例如约60℃至80℃，在该热处理范围内可以实现组织焊接。 在一种操作模式中，接合平面将自动地调节并且在接合表面的微米级部分的Rf能量施加之间空间地定位所接合组织内的欧姆加热。 在另一种操作模式中，可变电阻体将导电加热聚焦在接合表面的选定部分中。

    Electrosurgical instrument and method of use
    7.
    发明授权
    Electrosurgical instrument and method of use 有权

    公开(公告)号：US07112201B2

    公开(公告)日：2006-09-26

    申请号：US10351449

    申请日：2003-01-22

    申请人： Csaba Truckai ,  John H. Shadduck ,  James A. Baker

    发明人： Csaba Truckai ,  John H. Shadduck ,  James A. Baker

    IPC分类号： A61B18/12

    CPC分类号： A61B18/1442 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00125 ,  A61B2018/00148 ,  A61B2018/0063

    摘要： An electrosurgical medical device and method for creating thermal welds in engaged tissue. In one embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying a conductive-resistive matrix of a conductively-doped non-conductive elastomer. The engagement surface portions thus can be described as a positive temperature coefficient material that has a unique selected decreased electrical conductance at each selected increased temperature thereof over a targeted treatment range. The conductive-resistive matrix can be engineered to bracket a targeted thermal treatment range, for example about 60° C. to 80° C., at which tissue welding can be accomplished. In one mode of operation, the engagement plane will automatically modulate and spatially localize ohmic heating within the engaged tissue from Rf energy application—across micron-scale portions of the engagement surface. In another mode of operation, a conductive-resistive matrix can induce a “wave” of Rf energy density to sweep across the tissue to thereby weld tissue.

    Medical instruments and techniques for treatment of gastro-esophageal reflux disease
    8.
    发明授权
    Medical instruments and techniques for treatment of gastro-esophageal reflux disease 失效
    用于治疗胃食管反流病的医疗器械和技术

    公开(公告)号：US06535768B1

    公开(公告)日：2003-03-18

    申请号：US09648345

    申请日：2000-08-25

    申请人： James A. Baker ,  John H. Shadduck

    发明人： James A. Baker ,  John H. Shadduck

    IPC分类号： A61F200

    CPC分类号： A61B18/1485 ,  A61B18/1492 ,  A61B2018/00214 ,  A61B2018/00505 ,  A61B2018/00553 ,  A61B2018/00666 ,  A61B2018/00678 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00714 ,  A61B2018/00791 ,  A61B2018/00875 ,  A61B2018/00898 ,  A61B2018/126

    摘要： A novel therapeutic instrument and technique for delivering thermal energy to a target tissue volume or site in an interior of a patient's body in a “non-invasive” manner for medical purposes, such as selective cell damage to thereafter cause population of the extracellular compartment of the injury site with a collagen fiber matrix. An exemplary embodiment of the invention is a catheter-like device dimensioned for transurethral introduction. The distal working end has radiuses laterally-extending elements that are deployable to engage target tissues around the patient's sphincter from both within the bladder and within the urethra. RF electrodes are carried on the working faces of the opposing laterally-extending elements for delivering thermal energy to the target tissues. The working end is capable of site-specific compression of the target tissue to decrease the level of extracellular fluid (ECF) of the tissue to increase its resistance to RF energy, thus allowing the device to thermally treat (damage cells) in subsurface tissue sites without ablating surface tissues.

    摘要翻译： 用于以医疗目的的“非侵入性”方式将热能递送到患者身体内部的靶组织体积或位置的新型治疗仪器和技术，例如选择性细胞损伤，此后使细胞外隔室的群体 损伤部位用胶原纤维基质。 本发明的示例性实施例是尺寸适合经尿道导入的导管状装置。 远端工作端具有半径的横向延伸的元件，其可展开以从膀胱内和尿道内部接合患者括约肌周围的目标组织。 RF电极承载在相对的横向延伸元件的工作面上，用于将热能传递到靶组织。 工作端能够对靶组织进行位点特异性压缩以降低组织的细胞外液（ECF）的水平，以增加其对RF能量的抗性，从而允许该装置在地下组织部位热处理（损伤细胞） 没有烧蚀表面组织。

    Jaw structure for electrosurgical instrument and method of use
    9.
    发明授权
    Jaw structure for electrosurgical instrument and method of use 有权

    公开(公告)号：US07011657B2

    公开(公告)日：2006-03-14

    申请号：US10340144

    申请日：2003-01-10

    申请人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    发明人： Csaba Truckai ,  James A. Baker ,  John H. Shadduck

    IPC分类号： A61B18/12

    CPC分类号： A61B18/1445 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/0063 ,  A61B2018/1455

    摘要： An electrosurgical medical device and technique for creating thermal welds in engaged tissue that provides very high compressive forces. In one exemplary embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying first and second surface portions that comprise (i) an electrically conductive material and (ii) a positive temperature coefficient (PTC) material having a selected increased resistance that differs at each selected increased temperature over a targeted treatment range. One type of PTC material is a doped ceramic that can be engineered to exhibit a selected positively sloped temperature-resistance curve over about 37° C. to 100° C. The 70° C. to 100° C. range can bracket a targeted “thermal treatment range” at which tissue welded can be accomplished. The engineered resistance of the PTC matrix at the upper end of the temperature range will terminate current flow through the matrix. In one mode of operation, the engagement plane cause ohmic heating within tissue from Rf energy delivery tissue PTC matrix is heated to exceed the treatment range. Thereafter, energy density in the engaged tissue will be modulated as the conductivity of the second portion hovers within the targeted treatment range to thereby provide optical tissue heating for purposes of tissue welding.

    Electrosurgical jaw structure for controlled energy delivery
    10.
    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

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

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

    IPC分类号： A61B18/14 ,  A61B18/12

    CPC分类号： A61B18/1442 ,  A61B2018/00077 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/0063 ,  A61B2018/00809

    摘要： 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.

    摘要翻译： 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。