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    • 7. 发明授权
    • High-frequency electrosurgical unit with timed safety shut down interlock
    • 高频电外科装置具有定时安全关闭互锁功能
    • US4658815A
    • 1987-04-21
    • US819468
    • 1986-01-15
    • Gunter FarinPeter Putz
    • Gunter FarinPeter Putz
    • A61B18/12A61B17/36
    • A61B18/1206A61B2018/1273
    • A supplementary acoustic warning signal is provided for a high-frequency electrosurgical unit which sounds only after the lapse of an interval set by a first delay circuit shows that one of the high-frequency generators in the unit remains active longer than what, on the average, is normal. A second delay circuit is provided to assure shut-off of the high-frequency generators if at least one of the high-frequency generators remains active without interruption longer by an interval set by a second delay circuit beyond the lapse of an interval of the interval set by the first delay circuit. The supplementary acoustic signal thus sounds before the second delay circuit shuts off the high-frequency generators. The intervals determined by each of the delay circuits are adjustable. The output signal of the second delay circuit which activates the shut-off relays is maintained until a switch is operated to reset the system, so that the malfunction which has led to shut-down will be dealt with before the unit is used again.
    • 为高频电外科单元提供补充声警告信号,该声音仅在由第一延迟电路设定的间隔经过之后发出声音,表明该单元中的一个高频发生器的运行时间长于平均值 ,是正常的。 提供第二延迟电路以确保高频发生器中的至少一个高效率发生器中的至少一个保持有效而不间断地延长由第二延迟电路设置的间隔超过间隔的间隔的间隔 由第一延迟电路设置。 因此,辅助声信号在第二延迟电路关闭高频发生器之前听起来。 由每个延迟电路确定的间隔是可调节的。 激活关闭继电器的第二延迟电路的输出信号被维持,直到开关被操作以复位系统,从而在再次使用该单元之前将处理导致关闭的故障。
    • 8. 发明授权
    • High frequency electrosurgical apparatus for thermal coagulation of
biologic tissues
    • 高频电外科器械用于生物组织的热凝固
    • US4860745A
    • 1989-08-29
    • US74553
    • 1987-07-15
    • Gunter FarinReiner HaagPeter Putz
    • Gunter FarinReiner HaagPeter Putz
    • A61B18/12
    • A61B18/1206A61B2018/00666A61B2018/00702A61B2018/00708A61B2018/00761A61B2018/00767A61B2018/00827A61B2018/00857A61B2018/00886A61B2018/00892A61B2018/1273
    • A high frequency surgical apparatus for the thermal coagulation of biologic tissues is described, in which for monitoring the fluctuations in amplitude of the high frequency current during each coagulation process a current monitor (25) is provided, which by means of a current-to-voltage coverter generates an electrical voltage proportional to the amplitude fluctuations of the high frequency current, from which voltage, by means of a first detector, a first direct voltage proportional to the amplitude fluctuations is formed and, by means of a second detector acting as a peak value detector, a second direct voltage is formed that rises in proportion to the amplitude of the high frequency current. The first direct voltage (U.sub.a) and the second direct voltage (kU.sub.b), which is divided downward by an adjustable factor by means of a voltage divider, are supplied to a voltage comparator, the output signal of which sets a bistable circuit as soon as the first direct voltage (U.sub.a) becomes lower than the downwardly divided second direct voltage (kU.sub.b). The output signal of the bistable circuit switches the high frequency current off until the high frequency current is switched back on again by actuation of a manual switch and/or by means of an automatic switch. Instead of or in addition to this current monitor (25), and electric arc monitor (26) for monitoring the generation of anharmonic frequencies of the base frequency of the frequency generator can be connected to the output of the surgical apparatus, the arc monitor including a filter which passes at least one of the anharmonic frequencies, generated by the electric arc, of the base frequency of the high frequency generator. The output signal of the filter is supplied to a voltage comparator, the output signal of which resets a bistable circuit such that its output signal switches off the high frequency current.
    • 描述了用于生物组织的热凝固的高频手术装置,其中为了监测每个凝固过程期间的高频电流的幅度波动,提供了电流监视器(25),其通过电流 - 电压覆盖器产生与高频电流的幅度波动成比例的电压,通过第一检测器形成与振幅波动成比例的第一直流电压,并且借助于第二检测器 峰值检测器,形成与高频电流的振幅成比例地升高的第二直流电压。 通过分压器向下分配可调节因数的第一直流电压(Ua)和第二直流电压(kUb)被提供给电压比较器,其输出信号立即设置双稳态电路 第一直流电压(Ua)变得低于向下划分的第二直流电压(kUb)。 双稳态电路的输出信号切断高频电流,直到高频电流再次通过手动开关和/或自动切换开关重新接通。 除了该电流监视器(25)以外,还可以将用于监视频率发生器的基频的非谐波频率的产生的电弧监视器(26)连接到外科装置的输出端,电弧监视器包括 将通过电弧产生的至少一个非谐波频率的高频发生器的基频通过的滤波器。 滤波器的输出信号被提供给电压比较器,其输出信号复位双稳态电路,使得其输出信号关断高频电流。