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    • 1. 发明授权
    • Apparatus and method for RF lesioning
    • US06280441B1
    • 2001-08-28
    • US08990377
    • 1997-12-15
    • Thomas Patrick Ryan
    • Thomas Patrick Ryan
    • A61B1736
    • A61B18/148A61B2017/00026A61B2018/00023A61B2018/00702A61B2018/00875A61B2018/1435
    • To ablate target tissue a handle with proximal and distal ends connect to an interior passageway and along an axis. A semi rigid and helical effector at the distal end is along the axis and has a sharpened distal tip and a mount at its handle attachment. A source of radio frequency current supplies the effector and is insulated from the handle for delivery to bipolar and monopolar circuits. A return electrode connects between tissue and the source of radio frequency current. A sensor is carried on the handle positioned to measure target tissue ablation. A control couples the source of radio frequency current and the sensor for loop regulation of ablation. The effector is a wire bent into the helical shape with an insulating sleeve to prevent passage of radio frequency current near its mount. The sensor has a calculator to find impedance or temperature changes and the control examines for a rise. The effector is in an alternate a hollow tube bent into the helical shape and closed at its distal tip; the handle has a passage for fluid circulation. A return located on the effector insulating sleeve has a larger surface area than the distal tip. A bipolar delivery effector carries at least two electrodes supplied with current of opposite polarity between the electrodes. The effector is a framework with at least two supports for locating electrodes in spaced apart relationship about the distal tip. A plurality of electrodes are in an alternate coupled to the source of radio frequency current to receive opposite polarity from a multiplexer coupled electrically between the source of radio frequency current and the plurality of electrodes for selective delivery of radio frequency current of opposite polarity to at least two of the electrodes at the same time. An elongate shank extending from the mount to the helical shaped part of the effector for laparoscopic applications. A portal near the distal tip diverts the sensor to a position to measure target tissue. A light based system has a fiber optic for measurement of radiation of the target tissue with a meter. The control has a power modulator to maintain the impedance at approximately its low point. A method of ablating subsurface tissue includes inserting the distal tip into an entry point, rotating the effector about its axis to screw the helical shape into the tissue, and delivering controlled amounts of radio frequency current to the tissue.
    • 2. 发明授权
    • Channel-forming laser energy device
    • 通道形成激光能量装置
    • US06231568B1
    • 2001-05-15
    • US09307512
    • 1999-05-07
    • Marvin P. LoebL. Dean CrawfordSamuel M. Shaolian
    • Marvin P. LoebL. Dean CrawfordSamuel M. Shaolian
    • A61B1736
    • A61B18/24A61B2017/00199A61B2017/00247A61B2017/22075A61B2017/22077A61B2018/00392A61B2090/033
    • A surgical device is provided for forming a channel through or partially through vascular tissue, including vascular tissue, utilizing both mechanical and laser energy, and, if desired, depositing a therapeutic agent therein. The device includes an optical fiber for transmission of laser energy, a housing, and a hollow guide attached to the housing through which the optical fiber extends. A needle is attached to the distal end of the optical fiber in fluid communication with a catheter surrounding the optical fiber. Additionally, an actuator is included operably connected to the optical fiber for selectively extending the needle and/or fiber from the hollow guide. Finally, a laser control device is contemplated operably connected to the optical fiber, transmitting laser energy from the distal end of the fiber after the needle has penetrated a layer of selected distance into the tissue.
    • 提供了一种手术装置,用于通过或部分穿过血管组织(包括血管组织),利用机械和激光能量以及如果需要在其中沉积治疗剂。 该装置包括用于传输激光能量的光纤,壳体和附接到壳体的中空导轨,光纤延伸穿过该壳体。 针与光纤的远端连接,与光纤周围的导管流体连通。 另外,包括可操作地连接到光纤的致动器,用于从中空引导件选择性地延伸针和/或纤维。 最后,设想可操作地连接到光纤的激光控制装置,在针已经穿过选定距离的层到组织中之后,从光纤的远端传送激光能量。
    • 3. 发明授权
    • Method and apparatus for cryosurgery
    • 冷冻手术的方法和装置
    • US06786902B1
    • 2004-09-07
    • US09527491
    • 2000-03-16
    • Yoed RabinThomas Benjamin JulianNorman Wolmark
    • Yoed RabinThomas Benjamin JulianNorman Wolmark
    • A61B1736
    • A61B18/02A61B90/17A61B2018/0293
    • The present invention pertains to an apparatus for cryosurgery. The apparatus comprises a cryoneedle having a diameter less than 3.2 mm. The apparatus is also comprised of a thermal insulation shell disposed about a portion of the cryoneedle for reduction of heat transfer from surrounding tissues or freezing prevention of surrounding tissues during application of the cryoneedle with the shell. The cryoneedle and shell are configured for insertion into a body of a patient. The present invention pertains to a method for freezing tissues. The method comprises the steps of bringing into contact a cryoneedle having a diameter of less than 3.2 mm with a patient's body. Next, there is the step of flowing the cryofluid through the cryoneedle.
    • 本发明涉及一种用于冷冻手术的装置。 该装置包括直径小于3.2mm的冷冻针。 该装置还包括设置在冷冻针的一部分周围的绝热外壳,用于减少来自周围组织的热量传递或在与壳体一起使用冷冻食品时冻结周围组织的预防。 冷冻针和外壳被配置成插入到患者体内。 本发明涉及一种冷冻组织的方法。 该方法包括使具有小于3.2mm直径的冷冻针与患者身体接触的步骤。 接下来,有一个步骤是使冷冻液流过冷冻针。
    • 6. 发明授权
    • Surgical gas plasma ignition apparatus and method
    • 手术气体等离子体点火装置及方法
    • US06213999B1
    • 2001-04-10
    • US08934843
    • 1997-09-22
    • Robert C. Platt, Jr.Robin Badih Bek
    • Robert C. Platt, Jr.Robin Badih Bek
    • A61B1736
    • A61B18/042A61B2018/1213
    • An apparatus and method for igniting plasma in a surgical system is disclosed. A corona discharge is generated on a surgical handpiece which is used to ignite a plasma arc for surgical operations. The advantages include greater reliability and repeatability of plasma arc ignition. The apparatus comprises a handpiece incorporating an active electrode, a passage for ionizable gas, and a corona return electrode. The corona return electrode has a terminus on the holder and near the distal end of the holder. The corona return electrode is electrically connected to the return path of the electrosurgical generator. A non-uniform electric field is generated between the active electrode and the corona return electrode of sufficient strength so that a corona is formed near the active electrode. A separate return electrode may be on the patient, or the apparatus may be configured for bipolar electrosurgical operation by carrying the return electrode on the handpiece. A dielectric material separates the active electrode and the corona return electrode. There is substantially capacitive coupling between the active electrode and the corona return electrode. There is substantially resistive coupling between the active electrode and the return electrode.
    • 公开了一种在外科手术系统中点燃血浆的装置和方法。 在用于点燃用于外科手术的等离子体电弧的手术机身上产生电晕放电。 优点包括提高等离子弧点火的可靠性和重复性。 该装置包括结合有活性电极的手柄,可电离气体的通道和电晕返回电极。 电晕返回电极在支架上具有一个末端,靠近支架的远端。 电晕返回电极电连接到电外科发生器的返回路径。 在有效电极和电晕返回电极之间产生足够强度的不均匀电场,使得在有源电极附近形成电晕。 单独的返回电极可以在患者身上,或者该装置可以被配置为通过在手持件上携带返回电极来进行双极电外科操作。 电介质材料分离有源电极和电晕返回电极。 有源电极和电晕返回电极之间存在大体上的电容耦合。 有源电极和返回电极之间存在大体上的电阻耦合。
    • 8. 发明授权
    • High-frequency device for generating a plasma arc for the treatment of biological tissue
    • 用于产生用于治疗生物组织的等离子弧的高频装置
    • US06565558B1
    • 2003-05-20
    • US09763937
    • 2001-02-27
    • Heinz LindenmeierKarl Fastenmeier
    • Heinz LindenmeierKarl Fastenmeier
    • A61B1736
    • A61B18/042H05H1/46H05H2001/466H05H2001/4682H05H2245/122
    • High-frequency device to generate a plasma arc (5) for the treatment of biological tissue (1), in particular in medicine, with a high-frequency generator (3) having an internal resistor (8) and, connected thereto by means of a flexible lead (10), an electrode (4) with which the plasma arc (5) is produced in a plasma segment (6) between the electrode (4) and the biological tissue (1), which is likewise electrically connected to the high-frequency generator (3), such that in the high-frequency generator (3) a high-frequency voltage source (7) is provided to which is connected a resonant circuit (2) that comprises a first reactance element (9a) with a capacitive action and, in series therewith, a second reactance element (9a) with an inductive action, and that has a resonant frequency at the frequency of the high-frequency oscillation emitted by the high-frequency voltage source (7), wherein the voltage to generate the plasma arc (5) is derived from the first or second reactance element (9a, 9b).
    • 用于产生用于处理生物组织(1),特别是医学中的等离子弧(5)的高频装置与具有内部电阻器(8)的高频发生器(3)连接,并且通过 柔性引线(10),在电极(4)和生物组织(1)之间的等离子体段(6)中产生等离子弧(5)的电极(4),其同样电连接到 高频发生器(3),使得在高频发生器(3)中,提供高频电压源(7),其连接有包括第一电抗元件(9a)的谐振电路(2) 电容性动作,并且与其串联具有感应作用的第二电抗元件(9a),并且在由高频电压源(7)发射的高频振荡的频率处具有谐振频率,其中, 产生等离子弧(5)的电压从第一或第二电抗元件( 9a,9b)。
    • 9. 发明授权
    • Illuminated ophthalmic membrane pick assembly
    • 照明眼科膜组件
    • US06428553B1
    • 2002-08-06
    • US09520913
    • 2000-03-08
    • Michael T. Trese
    • Michael T. Trese
    • A61B1736
    • A61F9/00736A61B3/0008A61B2090/306
    • An illuminated ophthalmic membrane pick assembly is disclosed having an elongated housing and a throughbore extending between the housing ends. An elongated tubular probe has one end secured to one end of the housing in alignment with the housing throughbore. A membrane pick is secured to the other or free end of the probe so that a free end of the membrane pick overlies the free end of the probe. An optical fiber is longitudinally slidably disposed through the housing throughbore and the probe while a button mechanically secured to the optical fiber and slidably mounted to the housing moves the optical fiber between an extended and a retracted position. In its extended position, the optical fiber laterally outwardly displaces the membrane pick so that the free end of the pick abuts against a side of the optical fiber. Conversely, in its retracted position, the optical fiber is nested within the probe.
    • 公开了一种照明的眼科膜拾取组件,其具有细长壳体和在壳体端部之间延伸的通孔。 细长的管状探针的一端固定到壳体的一端,与壳体通孔对准。 膜片固定到探针的另一个或自由端,使得膜拾取物的自由端覆盖探针的自由端。 光纤通过壳体通孔和探头纵向可滑动地设置,而机械地固定到光纤上并且可滑动地安装到壳体的按钮将光纤延伸到延伸位置和缩回位置之间。 在其延伸位置,光纤横向向外移位膜拾取器,使得拾取器的自由端抵靠光纤的一侧。 相反,在其缩回位置,光纤被嵌套在探针内。