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    • 44. 发明公开
    • RESECTOSCOPE
    • RESEKTOSKOP
    • EP1529495A1
    • 2005-05-11
    • EP02741187.5
    • 2002-06-18
    • Olympus Optical Co., Ltd.
    • OHYAMA, MasahideHARANO, KenjiHIJII, Kazuya
    • A61B18/14A61B1/307
    • A61B18/149A61B2018/00672A61B2018/00702A61B2018/00827A61B2018/00875A61B2018/1472
    • According to a resectscope apparatus of the present invention, in order to control the output properly by discriminating electric characteristics of perfusion fluids, under control of the control circuit (101), a predetermined detection current is fed from the output transformer circuit (105) by using power, which does not produce an electrical breakdown even in the insulative liquid (161) or in the air. A predetermined lapse of time until the output is stabilized is waited. The sensor signal processing circuit (107) A/D converts and measures current values detected by the current sensors (106a) and (106b). Whether a treating electrode and a return electrode are in a conductive liquid, in an insulative liquid or in the air is determined. Then, the output control processing is performed.
    • 根据本发明的切除装置,为了在控制电路(101)的控制下,通过识别灌注流体的电特性来适当地控制输出,从输出变压器电路(105)将预定的检测电流从 即使在绝缘液体(161)或空气中也不会产生电击穿的电力。 等待输出稳定之前的预定时间等待。 传感器信号处理电路(107)A / D转换并测量由电流传感器(106a)和(106b)检测的电流值。 处理电极和返回电极是否处于导电液体,绝缘液体或空气中。 然后,执行输出控制处理。
    • 48. 发明公开
    • Impedance feedback monitor for electrosurgical instrument
    • 仪器仪表(Impedanzrückkopplungsüberwacherfürelektrochirurgisches Instrument)
    • EP1157666A1
    • 2001-11-28
    • EP01203302.3
    • 1995-12-21
    • ETHICON ENDO-SURGERY
    • Williamson, Warren P.Yates, David C.
    • A61B18/12A61B17/072A61B18/14
    • A61B18/1447A61B17/07207A61B17/115A61B17/32A61B18/1206A61B18/1402A61B18/1442A61B2017/07214A61B2017/07228A61B2018/00642A61B2018/00672A61B2018/00684A61B2018/00702A61B2018/00875A61B2018/1273A61B2018/1861A61B2090/032
    • Query electrodes are provided for monitoring the electrical impedance of tissue as it is treated with electrosurgical energy. In one embodiment, based on a predicted model of tissue impedance and a number of initial impedance readings, the impedance at which tissue treatment is completed is predicted. More particularly, a minimum impedance level is measured and a function of the minimum impedance is used to determine impedance at which coagulation is completed. A control device is provided for bringing the output of the generator within an optimum range based on a system load curve. In one embodiment the impedance monitoring device is used in conjunction with a bipolar electrosurgical instrument. Preferably, the instrument comprises electrically opposite therapeutic electrodes, each located on one or more tissue engaging surfaces for engaging tissue to be treated, and electrically opposite query electrodes, located on one or more tissue engaging surfaces. The therapeutic electrodes provide therapeutic energy to the tissue while the query electrodes provide a lower voltage electrical sensing energy for the purpose of measuring tissue impedance at various stages, e.g. before, during, or after tissue treatment.
    • 提供查询电极,用于监测组织的电阻抗,因为它被电外科能量治疗。 在一个实施例中,基于组织阻抗和初始阻抗读数的预测模型,预测组织处理完成的阻抗。 更具体地,测量最小阻抗水平,并且使用最小阻抗的函数来确定凝结完成的阻抗。 提供了一种控制装置,用于基于系统负载曲线使发电机的输出达到最佳范围。 在一个实施例中,阻抗监测装置与双极电外科器械结合使用。 优选地,该仪器包括电对立的治疗电极,每个电极位于一个或多个组织接合表面上,用于接合待治疗的组织,以及位于一个或多个组织接合表面上的电气相对的查询电极。 治疗电极为组织提供治疗能量,而查询电极提供较低电压的电感测能量,以便在各个阶段例如测量组织阻抗。 组织治疗之前,期间或之后。