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    163.
    发明专利
    未知

    公开(公告)号：DE2901153A1

    公开(公告)日：1979-07-19

    申请号：DE2901153

    申请日：1979-01-12

    Applicant: VALLEYLAB INC

    Inventor： HARRIS FRANK W

    IPC: A61B18/12 ,  A61B17/38 ,  H03B1/02

    Abstract: A multiple source electrosurgical generator wherein one of the sources may be optimized for desiccation of the patient's tissue, another source may be optimized for fulguration thereof and a third source may be optimized for cutting. All sources operate into a common output circuit and may be actuated either individually or in combination. The sources may also be operated in desiccate only, fulgurate only and cut only modes of operation. The different modes of operation may be selected from a hand-held electrosurgical instrument. An insulated, split patient electrode may be used with the generator where the operating frequency of the desiccate source may be higher than that of the fulgurate or cut sources. A spark detection circuit may also be employed (a) to ensure fulguration when the active electrode is a needle, (b) to prevent neuromuscular stimulation and (c) to ensure continuity of the patient circuit when fulgurating with low levels of current.

    164.
    发明专利
    未知

    公开(公告)号：DE2849422A1

    公开(公告)日：1979-05-23

    申请号：DE2849422

    申请日：1978-11-14

    Applicant: VALLEYLAB INC

    Inventor： HARRIS FRANK W

    IPC: A61B18/00 ,  A61B18/16 ,  G01B7/32 ,  A61B17/38

    Abstract: Patient contact area measurement method and apparatus including a first electroconductive contact element adapted for contact with the patient; a second electroconductive contact element separated from the first contact element and also adapted for contact with the patient; and measuring circuitry disposed between the first and second electroconductive contact elements for measuring the area of contact of the patient with respect to the contact elements. The electroconductive contact elements may comprise (a) each electrode of a split electrosurgical patient electrode, (b) the active and patient electrodes employed in electrosurgery or (c) a cryosurgical probe together with a monitor electrode adapted for contact with the patient.

    AUTOMATIC CONTROL FOR ELECTROSURGICAL GENERATOR
    166.
    发明授权
    AUTOMATIC CONTROL FOR ELECTROSURGICAL GENERATOR 失效
    自动控制电外科发生器

    公开(公告)号：EP0722296B1

    公开(公告)日：1998-12-02

    申请号：EP94924973.4

    申请日：1994-09-09

    Applicant: VALLEYLAB, INC.

    Inventor： KLICEK, Michael, S.

    IPC: A61B17/39 ,  A61B17/38

    CPC classification number: A61B18/1206 ,  A61B18/1233 ,  A61B18/1402 ,  A61B18/1442 ,  A61B2017/00101 ,  A61B2018/0016 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  A61B2018/1253 ,  A61B2018/126

    Abstract: In an ESV a control system responds to impedance and temperature as sensed between and at the electrodes (13) during desiccation each of such electrodes being provided separately and independently through a suitable multiplexer with a specifically controlled RF power. An instantaneous impedance monitor senses impedance variations and controls by means of specific derivative sensitive algorithm part of a feedback loop, the output power delivered through each electrode. A further temperature dependent feedback loop power control system is operative in a multiplexed mode in pair with the above impedance feedback system. Such second system uses an array of temperature sensors placed in the immediate proximity of the each tissue contacting electrode, and an appropriate derivative sensitive algorithm. Both systems are operated in a multiplex mode through a first multiplexer. A second multiplexer shifts the output power to the various electrodes independently and separately.

    Electrosurgical generator with adaptive power control
    167.
    发明公开
    Electrosurgical generator with adaptive power control 无效
    发电机发电机组适应器Leistungssteuerung

    公开(公告)号：EP0870473A2

    公开(公告)日：1998-10-14

    申请号：EP98300964.8

    申请日：1998-02-10

    Applicant: VALLEYLAB, INC.

    Inventor： Gines, David Lee

    IPC: A61B17/39

    CPC classification number: H03L5/02 ,  A61B18/1206 ,  A61B2018/00702 ,  A61B2018/00761 ,  A61B2018/00875 ,  A61B2018/00886 ,  A61B2018/124

    Abstract: An electrosurgical generator has an output power control system (10) that causes the impedance of tissue (14) to rise and fall in a cyclic pattern until the tissue (14) is desiccated. The advantage of the power control system (10) is that thermal spread and charring are reduced. In addition, the power control system (10) offers improved performance for electrosurgical vessel sealing and tissue welding. The output power is applied cyclically by a control system with tissue impedance feedback. The impedance of the tissue follows the cyclic pattern of the output power several times, depending on the state of the tissue (14), until the tissue becomes fully desiccated. High power is applied to cause the tissue (14) to reach a high impedance, and then the power is reduced to allow the impedance to fall. Thermal energy is allowed to dissipate during the low power cycle. The control system is adaptive to tissue in the sense that output power is modulated in response to the impedance of the tissue.

    Abstract translation: 电外科发生器具有输出功率控制系统（10），其使得组织（14）的阻抗以循环模式上升和下降直到组织（14）干燥。 功率控制系统（10）的优点是减少了散热和炭化。 此外，功率控制系统（10）提供了电外科容器密封和组织焊接的改善的性能。 输出功率由具有组织阻抗反馈的控制系统周期性地施加。 取决于组织（14）的状态，组织的阻抗几次遵循输出功率的循环模式，直到组织完全干燥。 施加高功率以使组织（14）达到高阻抗，然后降低功率以允许阻抗下降。 允许热能在低功率循环期间消散。 在输出功率响应于组织的阻抗被调制的意义上，控制系统适应于组织。

    RATE CONTROL FOR A SMOKE/LIQUID SUCTION ACCESSORY
    168.
    发明公开
    RATE CONTROL FOR A SMOKE/LIQUID SUCTION ACCESSORY 失效
    烟雾/液体吸入附件的速率控制

    公开(公告)号：EP0798986A1

    公开(公告)日：1997-10-08

    申请号：EP95931385.0

    申请日：1995-10-02

    Applicant: VALLEYLAB, INC.

    Inventor： MAKOWER, Joshua ,  ZIEVE, David, A. ,  BARBER, Frank

    IPC: A61B17 ,  A61B18

    CPC classification number: A61B18/1206 ,  A61B2218/008

    Abstract: An electrosurgical generator is equipped with a smoke evacuator which becomes active upon acting either on the foot pedal (16) or on the activation button on the hand piece (32). Evacuation however only takes place when the suction motor (29a) is activated by a trigger device (14) via other components (25, 37, 27) whenever HF current begins to flow. The rate of suction is determined by a smoke detector (42) placed on the smoke passage (30). A similar system can be used for total or partial removal of liquids from the operation site.

    Abstract translation: 电外科发生器配备有排烟器，该排烟器在脚踏板（16）或手持件（32）上的启动按钮上起作用时变为活动的。 然而，只有当HF电流开始流动时，抽吸马达（29a）经由其他部件（25,37,27）被触发装置（14）激活时才进行抽真空。 抽吸速率由放置在烟道（30）上的烟雾探测器（42）确定。 类似的系统可以用于全部或部分地从手术部位移除液体。

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