CN111317560A - 用于减少rf发生器中的泄漏电流的功率监测电路与方法 - Google Patents

用于减少rf发生器中的泄漏电流的功率监测电路与方法 Download PDF

Info

Publication number
CN111317560A
CN111317560A CN202010332167.3A CN202010332167A CN111317560A CN 111317560 A CN111317560 A CN 111317560A CN 202010332167 A CN202010332167 A CN 202010332167A CN 111317560 A CN111317560 A CN 111317560A
Authority
CN
China
Prior art keywords
output
voltage
logic device
programmable logic
electrosurgical unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010332167.3A
Other languages
English (en)
Other versions
CN111317560B (zh
Inventor
J·A·史密斯
D·休伯尔班克
J·S·瑞奥美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medtronic Advanced Energy LLC
Original Assignee
Medtronic Advanced Energy LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medtronic Advanced Energy LLC filed Critical Medtronic Advanced Energy LLC
Priority to CN202010332167.3A priority Critical patent/CN111317560B/zh
Publication of CN111317560A publication Critical patent/CN111317560A/zh
Application granted granted Critical
Publication of CN111317560B publication Critical patent/CN111317560B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B18/1233—Generators therefor with circuits for assuring patient safety
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1402—Probes for open surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/148—Probes or electrodes therefor having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00172—Connectors and adapters therefor
    • A61B2018/00178—Electrical connectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00607—Coagulation and cutting with the same instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • A61B2018/00648—Sensing and controlling the application of energy with feedback, i.e. closed loop control using more than one sensed parameter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00666—Sensing and controlling the application of energy using a threshold value
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00702—Power or energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00767—Voltage
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00827—Current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00892—Voltage
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/124—Generators therefor switching the output to different electrodes, e.g. sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1246—Generators therefor characterised by the output polarity
    • A61B2018/1253—Generators therefor characterised by the output polarity monopolar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1246—Generators therefor characterised by the output polarity
    • A61B2018/126—Generators therefor characterised by the output polarity bipolar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1286—Generators therefor having a specific transformer

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Plasma & Fusion (AREA)
  • Molecular Biology (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Surgical Instruments (AREA)
  • Inverter Devices (AREA)

Abstract

一种电外科单元，该电外科单元具有用于减少电外科单元中的泄漏电流的功率监测电路。电外科单元包括被配置成产生直流电流的电源、被配置成将直流电流转换成RF信号的RF波形发生器、被配置成测量到RF波形发生器的DC输入电压的电压传感器、被配置成测量输出电流反馈的电流传感器，以及处理器。处理器被配置成至少基于所测量的DC输入电压以及所测量的输出电流反馈来估算输出电压反馈，并输出控制信号以控制到RF波形发生器的DC输入电压，该控制信号至少基于所估算的输出电压以及输出电流反馈。

Description

用于减少RF发生器中的泄漏电流的功率监测电路与方法
本申请是国际申请日为2015-10-30，国际申请号为PCT/US2015/058257，进入中国国家阶段的申请号为201580059205.X，题为“用于减少RF发生器中的泄漏电流的功率监测电路与方法”的发明专利申请的分案申请。
技术领域
本公开涉及具有射频发生器的电外科单元，且更具体地，涉及用于管理功率输出并减少来自电外科单元的泄漏电流的方法与系统。
背景技术
在射频(“RF”)治疗系统中，由RF发生器产生的所有单极治疗能量理论上应该经由患者返回电极返回到发生器。治疗路径通常从RF发生器流动到有源附件、到目标(即，患者)、到返回电极并返回到RF发生器。然而，由于用于隔离RF发生器与递送设备之间的RF能量的供应的隔离屏障中的变压器的电容，有时以RF能量形式的杂散(stray)泄漏从RF发生器流动到地面而不是返回到RF发生器作为治疗路径的一部分。因为可进入患者、与患者接触的外科医生或其他医疗个人的危险数量的电流，RF泄漏对于使用者来说是担心的原因。
RF发生器设计者面临确保在正常系统操作与在故障条件两种情况下患者与RF治疗系统中的设备之间的连接最小化泄漏电流的挑战。设计者进一步面临满足标准IEC60601的隔离与泄漏电流要求的挑战，该标准IEC60601限定了医疗系统的安全性与电磁依从性(“EMC”)。
RF发生器设计者所面临的另一挑战是设计符合标准IEC60601的发生器，尤其是符合要求系统在任何单个故障条件期间维持安全操作并且不超过由IEC60601标准阐述的功率输出限值的标准。虽然存在基于反馈控制输出功率的软件，但是需要其他有效的非软件实现，因为单独的软件故障不能允许存在危险状况。
典型的RF发生器具有与地面隔离的输出以便防止RF泄漏。然而，隔离的输出电路通过它们自己不足以完全消除RF泄漏。一些RF发生器已经被设计有检测开路并能够相应地降低它们的峰值输出电压的能力。这导致若干性能问题。降低峰值输出电压以便最小化泄漏电流可劣化RF发生器的性能，因为峰值输出电压发起适当的凝结效果所需要的引发(sparking)。进一步地，由发生器感测开路条件所需的时间的量可导致瞬间的电压尖峰，这可导致发生RF泄漏。
其他类型的断言(predicate)发生器当检测到不可接受的泄漏水平时引入节流(throttling)方案。已经证明这些节流方案是不适当的，因为它们给控制系统增加了不期望的复杂性。
图1示出了用于RF治疗系统中的典型的反馈估算系统的电路图。电路10包括生成DC电压的直流(“DC”)电源11，该DC电压通过晶体管12的PWM控制被传递到降压(voltagebuck)调节器内。来自晶体管12的PWM输出波形通过滤波器14进行滤波以产生降低的DC电压，该降低的DC电压通过H桥RF波发生器16以被转换成被施加到用于治疗目标患者18的电外科仪器(未示出)的以RF波形形式的RF能量。
继续图1中所示的现有技术电路，RF输出电路可包括跨隔离屏障17(其用于隔离来自电外科仪器的RF能量的供应)的高匝数(high-turns)变压器22。电压传感器28(其包括分压器20以及具有耦合(coupling)24的高匝数变压器)在电路10中的位置(1)处测量RMS输出电压反馈。电流传感器30也包括具有耦合26的变压器并被配置成在电路10中的位置(2)处测量RMS输出电流反馈。因此，电路10包括跨隔离屏障17的三个电感耦合22，24以及26。基于AC RMS输出电压反馈以及RMS输出电流反馈，微处理器32计算估算的输出电压以及功率并在位置(4)处调节控制输出脉宽调制(“PWM”)信号输出以控制输入到H桥RF波发生器16的电压并将其输出维持在期望的水平。然而，隔离屏障17中的大量电感耦合导致过量电容并最终导致过度高水平的泄漏电流。因此，期望不同的RF反馈估算电路。
发明内容
本公开有利地提供了具有用于减少泄漏电流的电路的电外科单元。在一个实施例中，该电外科单元包括：被配置成产生直流电流的电源、被配置成将直流电流转换成RF信号的RF波形发生器、被配置成测量到RF波形发生器的DC输入电压的电压传感器以及被配置成测量输出电流反馈的电流传感器。该电外科单元还包括处理器，该处理器被配置成至少基于所测量的DC输入电压以及所测量的输出电流反馈来估算输出电压反馈，并输出控制信号以控制到RF波形发生器的DC输入电压，该控制信号至少基于所估算的输出电压以及输出电流反馈。
在另一实施例中，提供了用于控制RF系统的功率的方法。该方法包括：测量到RF波形发生器的DC输入电压、测量输出电流反馈、至少基于所测量的DC输入电压以及所测量的输出电流反馈来估算输出电压反馈，并输出控制信号以控制到RF波形发生器的DC输入电压，该控制信号至少基于所估算的输出电压以及输出电流反馈。
在另一实施例中，电外科单元包括：被配置成供应DC供应电流以及DC电压的DC电源、被配置成接收功率限值设置并输出PWM信号的可编程逻辑器件(该PWM信号对应于功率限值设置)、被配置成将PWM信号转换成阈值电压的缓冲器、以及比较器。比较器被设置成将直流供应电流与DC电压之积与阈值电压进行比较，并向可编辑逻辑器件输出启用(enable)信号，该启用信号启用可编程逻辑器件输出PWM信号以允许电外科单元将RF能量的输出控制在功率限值设置之下。
附图简述
在结合附图考虑时，通过参考以下详细描述，将更容易地了解本公开的更完整的理解以及其所附的优点和特征，其中：
图1示出了现有技术的反馈估算电路；
图2是根据本公开的原理进行构造的电外科手持件与电外科单元的前视立体图；
图3示出了根据本公开的实施例的用于减少泄漏电流的反馈估算电路；
图4示出了图3中所描绘的实施例的过程流程；
图5示出了根据本公开的另一实施例的功率输出限制电路；以及
图6示出了图5中所描绘的实施例的过程流程。
详细描述
本文所描述的实施例涉及可在电外科单元中采用的电路，从而使得由RF发生器产生的RF能量可被控制以便不超过由安全标准所禁止的过量功率水平。进一步地，本文所描述的示例性电路针对过高功率和/或电流状况间接地监测RF波形发生器的输出电压以及输出电流，因此实现了如由诸如标准IE60601-2-2之类的标准所规定的过功率(over-power)状况的二次、冗余减缓。
现在参见各附图，其中相同的附图标记表示相同的元件，在图2中示出的是根据本申请的原理进行构造并一般地指定成“34”的示例性电外科单元(“ESU)。”ESU 34可包括被配置成容纳ESU 34的部件的RF发生器36并可进一步包括触摸致动显示器38，该触摸致动显示器38用于：配置用于物理耦合到RF发生器36(同时维持RF与外壳之间的电隔离)的一个或多个电外科手持件的能量输出、显示治疗进展以及测量(例如，阻抗)、并发起和/或终止电耦合到ESU 34的一个或多个电外科手持件的射频能量的供应以及流体速率。在示例性配置中，ESU 34包括第一插座40，该第一插座40可以是被配置成接收第一电外科手持件42并与第一电外科手持件42电耦合的3引脚连接器，该第一电外科手持件42被配置成将双极射频能量递送给组织。ESU 34可进一步包括第二插座44(例如，7引脚插座)，该第二插座44被配置成接收第二电外科手持件46并与第二电外科手持件46电耦合，该第二电外科手持件被配置成递送单极射频能量或双极射频能量与单极射频能量的组合中的至少一者。
图3示出了ESU 34内的电路46，该电路46用于提供间接反馈估算并用于通过以下来限制ESU 34中的泄漏电流：通过减少电路部件的数量、减少昂贵的RMS转换器与变压器的使用以及减少跨隔离屏障48的电感耦合的数量(这减少了电容以及泄漏电流)。隔离屏障48包括一个或多个变压器，该变压器被配置成隔离RF发生器36与一个或多个电外科递送设备(未示出)之间的RF能量的供应。电路46的设计导致跨隔离屏障48的减少的电容并因此导致减少的患者泄漏电流。电路46是间接反馈估算电路，其使用由电压传感器56所测量的DC电压输入而非跨输出所感测的RMS反馈电压来控制RF发生器36的功率输出。电路46包括被配置成产生DC电流的DC电源50，该DC电流通过晶体管52的PWM控制被传递到降压调节器内。电路46包括滤波器54(其将PWM波形滤波成减少的DC电压)以及位于电路46中的位置(1)处的电压传感器56。电压传感器56测量到RF波形发生器60的信号的DC输入电压。RF波形发生器60可包括桥电路(bridge circuitry)，该桥电路被配置成从由微处理器62调节的DC输入电压生成RF信号。
DC输入电压反馈是可用于估算因变量RMS输出电压的两个独立解释变量(explanatory variable)中的一个。所使用的另一个独立解释变量是由电路46中的位置(2)处的电流传感器58所测量的AC RMS输出电流。有利地，电路46不要求在图1的现有技术电路中所示的对输出电压反馈的测量。因此，不需要测量输出电压反馈所需要的部件(即，跨隔离屏障48的变压器)。跨隔离屏障48的电感耦合的减少(在此情况下，从如图1中所示的三个耦合减少到图3中所示的两个)减少了隔离屏障48处的总体电容，因此减少了ESU 34中的总体泄漏电流。进一步地，电流反馈用于补偿来自DC电压输入反馈的AC RF电压输出估算中的非线性。类似地，DC电压输入反馈用于提高AC电流反馈估算。DC电压反馈值被乘以常数、对每个RF模式进行计算、并被加至AC电流反馈估算。
当将图3的电路46与图1的现有技术电路10进行比较时，显然，电路46中的部件的数量已被减少。电路46具有更少数量的部件、不需要昂贵的RMS转换器与变压器，且其设计导致跨隔离屏障48的降低的总体电容。结果是具有减少的泄漏电流的更成本有效的反馈估算电路。图3中示出的电路46包括微处理器62。微处理器62可以是可编程的以执行存储在存储器中的算法，其中，算法估算RMS输出电压并在位置(4)处提供控制RF发生器的功率输出的控制PWM信号64。微处理器62接收两个输入信号：表示由电压传感器56在位置(1)处所测量的DC输入电压反馈的信号66、以及表示由电流传感器58在位置(2)处所测量的输出电流的信号68。微处理器62可使用校准技术来使用输入信号66与68校准RMS输出电压。在一个实施例中，使用该DC输入电压以及该输出电流作为独立解释变量，多元线性回归分析可用于估算因变量RMS输出电压。使用合适的控制范围以及校准点，可获得RMS输出电压的准确估算。如以上讨论的，因为不是测量而是估算实际输出电压反馈，因此电路46不需要如现有技术电路所需要的附加的变压器以及RMS转换器。一旦已经获得RMS输出电压的估算，微处理器62可使用所估算的RMS输出电压以及所测量的输出电流来输出PWM控制信号64以便将到RF波形发生器60的DC输入电压以及由ESU 34递送到患者的功率控制到期望的水平。
本公开有利地提供了具有RF发生器电路46的ESU 34，该RF发生器电路46消除了测量电压输出反馈以便控制RF发生器36的功率输出的需要，因此减少了测量输出电压反馈所需的昂贵的RMS转换器以及变压器的数量。相反，电路46将表示输入电压以及所测量的AC电流反馈的输入信号提供给微处理器62，该微处理器62执行诸如回归分析之类的校准技术来估算输出电压反馈。基于所估算的输出电压反馈以及所测量的电流反馈，微处理器62可估算功率并相应地调节PWM信号64，以便控制到RF波形发生器60中的DC电压输入并控制由ESU34递送的总体功率。结果是具有用于调节RF能量控制的改进的且准确的反馈估算系统以便避免将过量RF能量递送到患者，同时包括减少数量的转换器以及内部电感耦合因此最小化泄漏电流的可能性的ESU34。
图4示出了本公开的实施例的过程流程。在步骤70处，由电压传感器56测量RF信号的DC输入电压成分。在步骤72处，由电流传感器58测量输出电流反馈。在步骤74处，估算而非测量输出电压反馈，其中，所估算的输出电压至少基于DC输入电压以及所测量的输出电流反馈。在步骤76处，微处理器62输出控制PWM信号64，其中，该控制信号至少基于所估算的输出电压以及所测量的输出电流反馈。
图5示出本公开的另一实施例。在图5中，示出ESU 34包括基于硬件的功率输出电路78。电路78限制被递送至患者的RF能量，以便符合标准(诸如IEC 60601，其要求治疗能量递送系统在正常条件和故障条件期间维持安全操作)。
电路78包括可编程逻辑器件80，诸如，专用集成电路(“ASIC”)、现场可编程门阵列(“FPGA”)或复杂可编程逻辑器件(“CPLD”)。将在本公开通篇中使用术语CPLD，但是本公开并不限于特定种类的可编程逻辑器件。使用阈值逻辑82，CPLD 80接收输出波形以及所要求的功率设置84，其中功率设置是基于特定功率限值。输入至CPLD 80的功率限值可基于ESU34必须不超过的特定功率阈值，以便维持安全操作，诸如，例如IEC 60601中标识的功率阈值。使用功率设置，CPLD 80输出PWM信号86，该PWM信号86与其对应的特定功率限值成比例。PWM信号86表示功率限制阈值。由缓冲器与低通滤波器88或其他类似的滤波电路来对PWM信号86进行滤波，以便将PWM信号86转换成对应的DC参考电压。
电路78还包括模拟乘法器90。模拟乘法器90接收被输入到RF发生器电路(图6中未示出)中的经滤波的DC供应电压92以及DC供应电流94。模拟乘法器90以功率信号的形式输出DC供应电压与DC供应电流之积。模拟比较器96将来自模拟乘法器90的功率信号输出与通过缓冲器与低通滤波器88的电压阈值输出(其表示功率限值)进行比较。如果功率信号的DC电压成分小于电压阈值，则启用信号98被输入到CPLD 80。逻辑连接电路100将启用信号98与从微处理器(未示出)接收到的RF启用信号102耦合，以启用PWM发生器104输出波形以及PWM信号，其中PWM信号用于在RF生成阶段(stage)106处产生RF能量输出。因此，以此方式，递送到患者的RF能量将不会超过指定限值，并且可按照安全标准(例如，用于单故障条件的IEC60601-2-2减缓)发生安全操作。
如果模拟比较器96将来自模拟乘法器90的功率信号输出与通过缓冲器以及低通滤波器88的电压阈值输出进行比较并确定功率信号的DC电压成分超过电压阈值，则启用信号98可被延迟，以便对RF信号生成的破坏(disruption)的起始与移除进行滤波。互锁延迟逻辑108延迟启用信号的移除达一预定时间量，因此延迟了到RF生成阶段106的PWM控制信号的生成的中断。一旦由信号98表示的过功率条件超过了起始延迟，则到逻辑连接电路100中的启用被破坏达由延迟逻辑108控制的一最小延迟周期，从而阻止RF信号生成。因此，延迟逻辑108可被配置成延迟来自CPLD 80的PWM控制信号的输出达等于故障持续时间的一段时间。
针对图6中的互锁延迟逻辑108示出的持续时间仅为示例性的，并且本文所描述的延迟逻辑可被调整成使用任何持续时间参数。在由互锁延迟逻辑108执行的一系列示例性步骤中，首先在步骤110处确定是否存在故障条件，并且如果存在，则使故障发生在预定时间量内。例如，如果确定故障在最后320毫秒中已经发生，则在步骤112处延迟禁用输出，直到故障已经发生达一预定时间量(即，20毫秒)。如果在过去的320毫秒内尚未发生故障，则在步骤114处延迟禁用输出直到故障已经发生达320毫秒。随后在步骤116处保持禁用输出信号达一持续时间(即，90毫秒)。因此，互锁延迟逻辑108可允许或抑制来自比较器96的启用信号98，这取决于故障条件的持续时间。通过延迟或抑制启用信号98，逻辑连接电路100的结果为“0”，因此延迟了故障条件期间到RF生成阶段106的PWM控制信号的生成。
图6示出根据本公开的实施例的电路78的处理流程。在步骤118处，接收DC供应电压以及DC供应电流，并在步骤120处将DC供应电压与DC供应电流相乘以形成乘法器输出。在步骤122处，将乘法器输出的DC电压成分与电压阈值进行比较。如上所述，电压阈值是基于通过CPLD 80的PWM输出(其基于所要求的功率设置84)。如果乘法器输出的DC成分不大于阈值电压，则在步骤124处，向CPLD 80发送启用信号以启用CPLD 80将RF能量的输出控制在功率限值设置之下以被用于RF生成阶段106处。如果乘法器输出的DC电压成分大于电压阈值，则在步骤126处，延迟逻辑108延迟对CPLD 80的禁用和重新启用，因此防止例如在故障条件期间的波形输出。在步骤128处，一旦确定了故障不再发生，则CPLD 80可如上所述被启用。
本领域技术人员应当理解，本公开不限于在上文中已具体示出并描述的内容。另外，除非作出相反提及，应该注意所有附图都不是按比例的。在不背离本公开的范围和精神的情况下，根据以上示教可能有各种修改和变型，本发明只受所附权利要求书限制。

Claims (8)

1.一种电外科单元，包括：
DC电源，所述DC电源被配置成供应DC供应电流以及DC电压；
可编程逻辑器件，所述可编程逻辑器件被配置成接收功率限值设置并输出脉宽调制(PWM)信号，所述PWM信号对应于所述功率限值设置；
缓冲器，所述缓冲器被配置成将所述PWM信号转换成阈值电压；以及
比较器，所述比较器被配置成：
将所述DC供应电流与所述DC电压之积与所述阈值电压进行比较；并
向所述可编程逻辑器件输出启用信号，所述启用信号启用所述可编程逻辑器件输出PWM信号以允许所述电外科单元将RF能量的输出控制在所述功率限值设置之下。
2.如权利要求1所述的电外科单元，进一步包括用于使所述DC供应电流与所述DC电压相乘的模拟乘法器。
3.如权利要求1所述的电外科电路，其特征在于，所述可编程逻辑器件进一步包括延迟逻辑，所述延迟逻辑被配置成延迟来自所述可编程逻辑器件的所述PWM信号的输出达等于故障持续时间的一段时间。
4.如权利要求1所述的电外科单元，其特征在于，所述可编程逻辑器件进一步被配置成接收RF启用信号，其中，所述RF启用信号以及来自所述比较器的所述启用信号允许所述可编程逻辑器件输出所述PWM信号以将所述RF能量的输出控制在所述功率限值设置之下。
5.如权利要求1所述的电外科单元，其特征在于，所述可编程逻辑器件是现场可编程门阵列。
6.如权利要求1所述的电外科单元，其特征在于，所述可编程逻辑器件是复杂可编程逻辑器件。
7.如权利要求1所述的电外科单元，其特征在于，所述功率限值设置符合标准IEC60601。
8.如权利要求1所述的电外科单元，其特征在于，所述可编程逻辑器件输出所述PWM信号以允许所述电外科单元将通过RF发生器的RF能量的输出控制在所述功率限值设置之下。
CN202010332167.3A 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法 Active CN111317560B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010332167.3A CN111317560B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US201462073705P 2014-10-31 2014-10-31
US62/073,705 2014-10-31
US201562164930P 2015-05-21 2015-05-21
US62/164,930 2015-05-21
PCT/US2015/058257 WO2016070009A1 (en) 2014-10-31 2015-10-30 Power monitoring circuitry and method for reducing leakage current in rf generators
CN201580059205.XA CN107106228B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法
CN202010332167.3A CN111317560B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201580059205.XA Division CN107106228B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法

Publications (2)

Publication Number Publication Date
CN111317560A true CN111317560A (zh) 2020-06-23
CN111317560B CN111317560B (zh) 2023-09-22

Family

ID=54477395

Family Applications (3)

Application Number Title Priority Date Filing Date
CN202010332167.3A Active CN111317560B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法
CN201580059205.XA Active CN107106228B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法
CN201580059098.0A Active CN107112981B (zh) 2014-10-31 2015-10-30 用于减少rf泄漏电流的手指开关电路

Family Applications After (2)

Application Number Title Priority Date Filing Date
CN201580059205.XA Active CN107106228B (zh) 2014-10-31 2015-10-30 用于减少rf发生器中的泄漏电流的功率监测电路与方法
CN201580059098.0A Active CN107112981B (zh) 2014-10-31 2015-10-30 用于减少rf泄漏电流的手指开关电路

Country Status (5)

Country Link
US (6) US10363086B2 (zh)
EP (2) EP3212102B1 (zh)
JP (2) JP6397573B2 (zh)
CN (3) CN111317560B (zh)
WO (2) WO2016070009A1 (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11369434B2 (en) * 2016-06-22 2022-06-28 Covidien Lp Systems and methods for determining the status of a fluid-cooled microwave ablation system
US11723713B2 (en) 2016-12-15 2023-08-15 Medtronic Advanced Energy Llc Electrosurgical blade with minimally exposed edge, alternative to coated blade
US10247688B2 (en) * 2017-01-05 2019-04-02 Kevin R. Williams Moisture detecting system and method for use in an IGBT or a MOSFET
US11071579B2 (en) 2017-01-20 2021-07-27 Medtronic Advanced Energy Llc Bipolar cutting and hemostasis blade system
CN107834306A (zh) * 2017-10-20 2018-03-23 江苏永沃铜业有限公司 一种射频连接器接地装置
WO2019146018A1 (ja) * 2018-01-24 2019-08-01 オリンパス株式会社 ジェネレータ
US11923084B2 (en) 2018-09-07 2024-03-05 Cilag Gmbh International First and second communication protocol arrangement for driving primary and secondary devices through a single port
US11350978B2 (en) 2018-09-07 2022-06-07 Cilag Gmbh International Flexible neutral electrode
US11804679B2 (en) 2018-09-07 2023-10-31 Cilag Gmbh International Flexible hand-switch circuit
US20200078071A1 (en) 2018-09-07 2020-03-12 Ethicon Llc Instrument tracking arrangement based on real time clock information
US11218822B2 (en) 2019-03-29 2022-01-04 Cilag Gmbh International Audio tone construction for an energy module of a modular energy system
USD939545S1 (en) 2019-09-05 2021-12-28 Cilag Gmbh International Display panel or portion thereof with graphical user interface for energy module
US11980411B2 (en) 2021-03-30 2024-05-14 Cilag Gmbh International Header for modular energy system
US11857252B2 (en) 2021-03-30 2024-01-02 Cilag Gmbh International Bezel with light blocking features for modular energy system
US11950860B2 (en) 2021-03-30 2024-04-09 Cilag Gmbh International User interface mitigation techniques for modular energy systems
US11978554B2 (en) 2021-03-30 2024-05-07 Cilag Gmbh International Radio frequency identification token for wireless surgical instruments
US11968776B2 (en) 2021-03-30 2024-04-23 Cilag Gmbh International Method for mechanical packaging for modular energy system
US11963727B2 (en) 2021-03-30 2024-04-23 Cilag Gmbh International Method for system architecture for modular energy system
CN115517757B (zh) * 2022-11-28 2023-03-31 成都美创医疗科技股份有限公司 一种外刀组件及外出水止血刨刀

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727874A (en) * 1984-09-10 1988-03-01 C. R. Bard, Inc. Electrosurgical generator with high-frequency pulse width modulated feedback power control
RU2154436C2 (ru) * 1998-04-03 2000-08-20 Общество с ограниченной ответственностью "ЭФА" Электрохирургический аппарат
US6210403B1 (en) * 1993-10-07 2001-04-03 Sherwood Services Ag Automatic control for energy from an electrosurgical generator
US20100016850A1 (en) * 2008-07-15 2010-01-21 Venus Technologies LTD. Esthetic device useful for increasing skin beautification and methods thereof
US20100063494A1 (en) * 2008-09-05 2010-03-11 Tyco Healthcare Group Lp Electrosurgical Apparatus With High Speed Energy Recovery
US20130053840A1 (en) * 2011-08-30 2013-02-28 Tyco Healthcare Group Lp System and Method for DC Tissue Impedance Sensing
US20140258800A1 (en) * 2013-03-11 2014-09-11 Covidien Lp Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator

Family Cites Families (257)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US411004A (en) 1889-09-17 billings
US41921A (en) 1864-03-15 Improvement in tobacco-pipes
US404004A (en) 1889-05-28 Adjustable shelf-bracket
US39358A (en) 1863-07-28 Improvement in raking and binding apparatus for reaping
DE2646229A1 (de) * 1976-10-13 1978-04-20 Erbe Elektromedizin Hochfrequenz-chirurgiegeraet
US4473075A (en) 1982-12-08 1984-09-25 Medical Research Associates, Ltd. Electrosurgical generator with improved rapid start capability
DE3420339A1 (de) 1983-05-31 1985-01-17 Berchtold Medizin-Elektronik GmbH & Co, 7200 Tuttlingen Verfahren zur steuerung einer hochfrequenzchirurgie-koagulationsvorrichtung und hochfrequenzchirurgie-koagulationsvorrichtung zur ausfuehrung dieses verfahrens
US4569345A (en) 1984-02-29 1986-02-11 Aspen Laboratories, Inc. High output electrosurgical unit
NO165661C (no) * 1984-12-11 1991-03-20 Valleylab Inc Elektrokirurgisk genererings-system.
DE3732102C1 (de) 1987-09-24 1989-05-03 Gustav Memminger Fadenliefervorrichtung fuer Textilmaschinen mit zeitlich unterschiedlichem Fadenverbrauch,insbesondere Strick- und Wirkmaschinen
DE68925215D1 (de) 1988-01-20 1996-02-08 G2 Design Ltd Diathermiegerät
EP0336742A3 (en) 1988-04-08 1990-05-16 Bristol-Myers Company Method and apparatus for the calibration of electrosurgical apparatus
US4903696A (en) 1988-10-06 1990-02-27 Everest Medical Corporation Electrosurgical generator
JPH02197035A (ja) 1989-01-25 1990-08-03 Mitsubishi Electric Corp 真空スイッチ用接点材料およびその製法
US5282799A (en) 1990-08-24 1994-02-01 Everest Medical Corporation Bipolar electrosurgical scalpel with paired loop electrodes
US5697909A (en) 1992-01-07 1997-12-16 Arthrocare Corporation Methods and apparatus for surgical cutting
US5891095A (en) 1993-05-10 1999-04-06 Arthrocare Corporation Electrosurgical treatment of tissue in electrically conductive fluid
US6142992A (en) 1993-05-10 2000-11-07 Arthrocare Corporation Power supply for limiting power in electrosurgery
US6063079A (en) 1995-06-07 2000-05-16 Arthrocare Corporation Methods for electrosurgical treatment of turbinates
US5697882A (en) 1992-01-07 1997-12-16 Arthrocare Corporation System and method for electrosurgical cutting and ablation
US5300068A (en) 1992-04-21 1994-04-05 St. Jude Medical, Inc. Electrosurgical apparatus
US5352868A (en) 1992-05-01 1994-10-04 Hemostatic Surgery Corporation Resistance feedback controlled power supply
JPH06142113A (ja) * 1992-11-09 1994-05-24 Aika:Kk 電気手術器並びに電気手術器による医療用電子機器への電磁波障害防止装置
US5334193A (en) 1992-11-13 1994-08-02 American Cardiac Ablation Co., Inc. Fluid cooled ablation catheter
US5348554A (en) 1992-12-01 1994-09-20 Cardiac Pathways Corporation Catheter for RF ablation with cooled electrode
US5558671A (en) 1993-07-22 1996-09-24 Yates; David C. Impedance feedback monitor for electrosurgical instrument
GB9314391D0 (en) 1993-07-12 1993-08-25 Gyrus Medical Ltd A radio frequency oscillator and an electrosurgical generator incorporating such an oscillator
US5560355A (en) 1993-12-17 1996-10-01 Nellcor Puritan Bennett Incorporated Medical sensor with amplitude independent output
US5422567A (en) 1993-12-27 1995-06-06 Valleylab Inc. High frequency power measurement
US5472442A (en) * 1994-03-23 1995-12-05 Valleylab Inc. Moveable switchable electrosurgical handpiece
GB9413070D0 (en) 1994-06-29 1994-08-17 Gyrus Medical Ltd Electrosurgical apparatus
US6197025B1 (en) 1994-09-30 2001-03-06 Circon Corporation Grooved slider electrode for a resectoscope
US5582610A (en) 1994-09-30 1996-12-10 Circon Corporation Grooved slider electrode for a resectoscope
US5669906A (en) 1994-09-30 1997-09-23 Circon Corporation Grooved roller electrode for a resectoscope
US5599349A (en) 1994-09-30 1997-02-04 Circon Corporation V shaped grooved roller electrode for a resectoscope
GB9425781D0 (en) 1994-12-21 1995-02-22 Gyrus Medical Ltd Electrosurgical instrument
US5573424A (en) 1995-02-09 1996-11-12 Everest Medical Corporation Apparatus for interfacing a bipolar electrosurgical instrument to a monopolar generator
US6409722B1 (en) 1998-07-07 2002-06-25 Medtronic, Inc. Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue
US5707369A (en) 1995-04-24 1998-01-13 Ethicon Endo-Surgery, Inc. Temperature feedback monitor for hemostatic surgical instrument
US5720744A (en) 1995-06-06 1998-02-24 Valleylab Inc Control system for neurosurgery
US6015406A (en) 1996-01-09 2000-01-18 Gyrus Medical Limited Electrosurgical instrument
BR9609421A (pt) 1995-06-23 1999-05-18 Gyrus Medical Ltd Instrumento eletrocirúrgico
WO1997000646A1 (en) 1995-06-23 1997-01-09 Gyrus Medical Limited An electrosurgical instrument
GB9526627D0 (en) 1995-12-29 1996-02-28 Gyrus Medical Ltd An electrosurgical instrument and an electrosurgical electrode assembly
US6293942B1 (en) 1995-06-23 2001-09-25 Gyrus Medical Limited Electrosurgical generator method
US5810804A (en) 1995-08-15 1998-09-22 Rita Medical Systems Multiple antenna ablation apparatus and method with cooling element
US6059780A (en) 1995-08-15 2000-05-09 Rita Medical Systems, Inc. Multiple antenna ablation apparatus and method with cooling element
US5785708A (en) * 1995-09-19 1998-07-28 Lp Systems Corporation Epilator probeholder
US5772659A (en) 1995-09-26 1998-06-30 Valleylab Inc. Electrosurgical generator power control circuit and method
GB9521772D0 (en) 1995-10-24 1996-01-03 Gyrus Medical Ltd An electrosurgical instrument
US6073051A (en) 1996-08-13 2000-06-06 Oratec Interventions, Inc. Apparatus for treating intervertebal discs with electromagnetic energy
US6013076A (en) 1996-01-09 2000-01-11 Gyrus Medical Limited Electrosurgical instrument
US6090106A (en) 1996-01-09 2000-07-18 Gyrus Medical Limited Electrosurgical instrument
US5792138A (en) 1996-02-22 1998-08-11 Apollo Camera, Llc Cordless bipolar electrocautery unit with automatic power control
US6458121B1 (en) 1996-03-19 2002-10-01 Diapulse Corporation Of America Apparatus for athermapeutic medical treatments
GB2314274A (en) 1996-06-20 1997-12-24 Gyrus Medical Ltd Electrode construction for an electrosurgical instrument
GB9612993D0 (en) 1996-06-20 1996-08-21 Gyrus Medical Ltd Electrosurgical instrument
US6565561B1 (en) 1996-06-20 2003-05-20 Cyrus Medical Limited Electrosurgical instrument
US6126682A (en) 1996-08-13 2000-10-03 Oratec Interventions, Inc. Method for treating annular fissures in intervertebral discs
US6544260B1 (en) 1996-08-20 2003-04-08 Oratec Interventions, Inc. Method for treating tissue in arthroscopic environment using precooling and apparatus for same
GB9626512D0 (en) 1996-12-20 1997-02-05 Gyrus Medical Ltd An improved electrosurgical generator and system
US6100920A (en) 1997-01-31 2000-08-08 Circon Corporation Video signal compensator for compensating differential picture brightness of an optical image due to uneven illumination and method
ES2353846T3 (es) 1997-04-11 2011-03-07 United States Surgical Corporation Aparato para ablación con rf y controlador del mismo.
GB9708268D0 (en) 1997-04-24 1997-06-18 Gyrus Medical Ltd An electrosurgical instrument
US5838558A (en) 1997-05-19 1998-11-17 Trw Inc. Phase staggered full-bridge converter with soft-PWM switching
GB9900964D0 (en) 1999-01-15 1999-03-10 Gyrus Medical Ltd An electrosurgical system
WO1999003408A1 (en) 1997-07-18 1999-01-28 Gyrus Medical Limited An electrosurgical instrument
US7278994B2 (en) 1997-07-18 2007-10-09 Gyrus Medical Limited Electrosurgical instrument
US6923803B2 (en) 1999-01-15 2005-08-02 Gyrus Medical Limited Electrosurgical system and method
GB2327352A (en) 1997-07-18 1999-01-27 Gyrus Medical Ltd Electrosurgical instrument
US6228079B1 (en) 1997-10-06 2001-05-08 Somnus Medical Technology, Inc. Method and apparatus for power measurement in radio frequency electro-surgical generators
WO1999039189A2 (en) 1998-01-28 1999-08-05 American Science And Engineering, Inc. Gated transmission and scatter detection for x-ray imaging
GB9807303D0 (en) 1998-04-03 1998-06-03 Gyrus Medical Ltd An electrode assembly for an electrosurgical instrument
GB2335858A (en) 1998-04-03 1999-10-06 Gyrus Medical Ltd Resectoscope having pivoting electrode assembly
US6657173B2 (en) 1998-04-21 2003-12-02 State Board Of Higher Education On Behalf Of Oregon State University Variable frequency automated capacitive radio frequency (RF) dielectric heating system
US6059778A (en) 1998-05-05 2000-05-09 Cardiac Pacemakers, Inc. RF ablation apparatus and method using unipolar and bipolar techniques
US6508815B1 (en) 1998-05-08 2003-01-21 Novacept Radio-frequency generator for powering an ablation device
US7137980B2 (en) 1998-10-23 2006-11-21 Sherwood Services Ag Method and system for controlling output of RF medical generator
US7267677B2 (en) 1998-10-23 2007-09-11 Sherwood Services Ag Vessel sealing instrument
US20100042093A9 (en) 1998-10-23 2010-02-18 Wham Robert H System and method for terminating treatment in impedance feedback algorithm
US6222718B1 (en) 1998-11-12 2001-04-24 Lam Research Corporation Integrated power modules for plasma processing systems
WO2000039576A1 (en) 1998-12-23 2000-07-06 Image Guided Technologies, Inc. A hybrid 3-d probe tracked by multiple sensors
US7001380B2 (en) 1999-01-15 2006-02-21 Gyrus Medical Limited Electrosurgical system and method
US6582427B1 (en) 1999-03-05 2003-06-24 Gyrus Medical Limited Electrosurgery system
US6398781B1 (en) 1999-03-05 2002-06-04 Gyrus Medical Limited Electrosurgery system
JP2000271145A (ja) 1999-03-24 2000-10-03 Olympus Optical Co Ltd 治療装置及び治療システム
US6203541B1 (en) 1999-04-23 2001-03-20 Sherwood Services Ag Automatic activation of electrosurgical generator bipolar output
US6258085B1 (en) 1999-05-11 2001-07-10 Sherwood Services Ag Electrosurgical return electrode monitor
US6547786B1 (en) 1999-05-21 2003-04-15 Gyrus Medical Electrosurgery system and instrument
GB9911956D0 (en) 1999-05-21 1999-07-21 Gyrus Medical Ltd Electrosurgery system and method
US6298255B1 (en) 1999-06-09 2001-10-02 Aspect Medical Systems, Inc. Smart electrophysiological sensor system with automatic authentication and validation and an interface for a smart electrophysiological sensor system
US6238388B1 (en) 1999-09-10 2001-05-29 Alan G. Ellman Low-voltage electrosurgical apparatus
US6558379B1 (en) 1999-11-18 2003-05-06 Gyrus Medical Limited Electrosurgical system
US6758846B2 (en) 2000-02-08 2004-07-06 Gyrus Medical Limited Electrosurgical instrument and an electrosurgery system including such an instrument
US7146210B2 (en) 2000-02-17 2006-12-05 Standen Ltd. Apparatus and method for optimizing tumor treatment efficiency by electric fields
US7335199B2 (en) 2000-02-22 2008-02-26 Rhytec Limited Tissue resurfacing
US7300436B2 (en) 2000-02-22 2007-11-27 Rhytec Limited Tissue resurfacing
US6723091B2 (en) 2000-02-22 2004-04-20 Gyrus Medical Limited Tissue resurfacing
US6953461B2 (en) 2002-05-16 2005-10-11 Tissuelink Medical, Inc. Fluid-assisted medical devices, systems and methods
US7811282B2 (en) 2000-03-06 2010-10-12 Salient Surgical Technologies, Inc. Fluid-assisted electrosurgical devices, electrosurgical unit with pump and methods of use thereof
AU2001261486A1 (en) 2000-05-12 2001-11-26 Cardima, Inc. Multi-channel rf energy delivery with coagulum reduction
US7066933B2 (en) 2000-08-08 2006-06-27 Erbe Elektromedizin Gmbh High-frequency generator for performing high-frequency surgery having adjustable power limitation, and method for controlling the power limitation
JP4402272B2 (ja) * 2000-08-21 2010-01-20 オリンパス株式会社 手術装置
US6893435B2 (en) 2000-10-31 2005-05-17 Gyrus Medical Limited Electrosurgical system
US6843789B2 (en) 2000-10-31 2005-01-18 Gyrus Medical Limited Electrosurgical system
US6385059B1 (en) 2000-11-14 2002-05-07 Iwatt, Inc. Transformer-coupled switching power converter having primary feedback control
DE10061278B4 (de) 2000-12-08 2004-09-16 GFD-Gesellschaft für Diamantprodukte mbH Instrument für chirurgische Zwecke
US8133218B2 (en) 2000-12-28 2012-03-13 Senorx, Inc. Electrosurgical medical system and method
WO2002080796A1 (en) 2001-04-06 2002-10-17 Sherwood Services Ag Vessel sealer and divider with non-conductive stop members
US6663627B2 (en) 2001-04-26 2003-12-16 Medtronic, Inc. Ablation system and method of use
US7250048B2 (en) 2001-04-26 2007-07-31 Medtronic, Inc. Ablation system and method of use
US6648883B2 (en) 2001-04-26 2003-11-18 Medtronic, Inc. Ablation system and method of use
US20100324550A1 (en) 2009-06-17 2010-12-23 Nuortho Surgical Inc. Active conversion of a monopolar circuit to a bipolar circuit using impedance feedback balancing
US6808525B2 (en) 2001-08-27 2004-10-26 Gyrus Medical, Inc. Bipolar electrosurgical hook probe for cutting and coagulating tissue
US8002769B2 (en) 2001-08-27 2011-08-23 Gyrus Medical Limited Electrosurgical generator and system
US7282048B2 (en) 2001-08-27 2007-10-16 Gyrus Medical Limited Electrosurgical generator and system
US7993332B2 (en) 2001-08-27 2011-08-09 Gyrus Medical Limited Electrosurgical generator and system
US6966907B2 (en) 2001-08-27 2005-11-22 Gyrus Medical Limited Electrosurgical generator and system
US6929641B2 (en) 2001-08-27 2005-08-16 Gyrus Medical Limited Electrosurgical system
US7344532B2 (en) 2001-08-27 2008-03-18 Gyrus Medical Limited Electrosurgical generator and system
EP1287788B1 (en) 2001-08-27 2011-04-20 Gyrus Medical Limited Electrosurgical system
US6652514B2 (en) * 2001-09-13 2003-11-25 Alan G. Ellman Intelligent selection system for electrosurgical instrument
US6761716B2 (en) 2001-09-18 2004-07-13 Cardiac Pacemakers, Inc. System and method for assessing electrode-tissue contact and lesion quality during RF ablation by measurement of conduction time
US20030083652A1 (en) 2001-10-31 2003-05-01 Oratec Interventions, Inc Method for treating tissue in arthroscopic environment
GB0425842D0 (en) 2004-11-24 2004-12-29 Gyrus Group Plc An electrosurgical instrument
US6942662B2 (en) 2001-12-27 2005-09-13 Gyrus Group Plc Surgical Instrument
GB0130975D0 (en) 2001-12-27 2002-02-13 Gyrus Group Plc A surgical instrument
DE10218893A1 (de) 2002-04-26 2003-11-13 Storz Endoskop Prod Gmbh Hochfrequenz-Chirugiegenerator
GB0221707D0 (en) 2002-09-18 2002-10-30 Gyrus Medical Ltd Electrical system
US7041096B2 (en) 2002-10-24 2006-05-09 Synergetics Usa, Inc. Electrosurgical generator apparatus
WO2004043240A2 (en) 2002-11-13 2004-05-27 Artemis Medical, Inc. Devices and methods for controlling initial movement of an electrosurgical electrode
US6875210B2 (en) 2002-11-19 2005-04-05 Conmed Corporation Electrosurgical generator and method for cross-checking mode functionality
US6942660B2 (en) 2002-11-19 2005-09-13 Conmed Corporation Electrosurgical generator and method with multiple semi-autonomously executable functions
US6948503B2 (en) 2002-11-19 2005-09-27 Conmed Corporation Electrosurgical generator and method for cross-checking output power
DE60314184T2 (de) 2003-01-09 2008-01-24 Gyrus Medical Ltd., St. Mellons Elektrochirurgischer generator
US7195627B2 (en) 2003-01-09 2007-03-27 Gyrus Medical Limited Electrosurgical generator
US7651513B2 (en) 2003-04-03 2010-01-26 Boston Scientific Scimed, Inc. Flexible embolic device delivery system
US7789891B2 (en) 2003-09-23 2010-09-07 Boston Scientific Scimed, Inc. External activation of vaso-occlusive implants
WO2005039390A2 (en) 2003-10-20 2005-05-06 Arthrocare Corporation Electrosurgical method and apparatus for removing tissue within a bone body
US7156842B2 (en) * 2003-11-20 2007-01-02 Sherwood Services Ag Electrosurgical pencil with improved controls
GB2408936B (en) 2003-12-09 2007-07-18 Gyrus Group Plc A surgical instrument
US7094231B1 (en) * 2004-01-22 2006-08-22 Ellman Alan G Dual-mode electrosurgical instrument
US20050177184A1 (en) 2004-02-09 2005-08-11 Easley James C. Torsional dissection tip
GB2414185A (en) 2004-05-20 2005-11-23 Gyrus Medical Ltd Morcellating device using cutting electrodes on end-face of tube
US8512340B2 (en) 2004-07-02 2013-08-20 Stryker Corporation Torsional pineapple dissection tip
CN1305445C (zh) * 2004-07-22 2007-03-21 上海交通大学 射频消融治疗系统的功率发生和监控电路
US7855727B2 (en) 2004-09-15 2010-12-21 Gyrus Acmi, Inc. Endoscopy device supporting multiple input devices
US7422582B2 (en) 2004-09-29 2008-09-09 Stryker Corporation Control console to which powered surgical handpieces are connected, the console configured to simultaneously energize more than one and less than all of the handpieces
DE102004054575A1 (de) 2004-11-11 2006-05-24 Erbe Elektromedizin Gmbh Regelung für ein HF-Chirurgiegerät
US8617152B2 (en) 2004-11-15 2013-12-31 Medtronic Ablation Frontiers Llc Ablation system with feedback
GB0425843D0 (en) 2004-11-24 2004-12-29 Gyrus Group Plc An electrosurgical instrument
US7429261B2 (en) 2004-11-24 2008-09-30 Ablation Frontiers, Inc. Atrial ablation catheter and method of use
US7674263B2 (en) 2005-03-04 2010-03-09 Gyrus Ent, L.L.C. Surgical instrument and method
US7699846B2 (en) 2005-03-04 2010-04-20 Gyrus Ent L.L.C. Surgical instrument and method
US7674261B2 (en) 2005-03-28 2010-03-09 Elliquence, Llc Electrosurgical instrument with enhanced capability
DE102005023303A1 (de) 2005-05-13 2006-11-16 Celon Ag Medical Instruments Biegeweiche Applikationsvorrichtung zur Hochfrequenztherapie von biologischem Gewebe
DE602006015661D1 (de) 2005-06-28 2010-09-02 Stryker Corp Angetriebenes chirurgisches werkzeug mit kontrollmodul und einem sensor zur fernüberwachung des stromerzeugungsaggregats für das werkzeug
CA2615267A1 (en) 2005-07-11 2007-01-18 Ablation Frontiers, Inc. Low power tissue ablation system
US8657814B2 (en) 2005-08-22 2014-02-25 Medtronic Ablation Frontiers Llc User interface for tissue ablation system
US20070073334A1 (en) 2005-09-29 2007-03-29 Kamal Ramzipoor Combined electrolytic and mechanical separation background
US8734438B2 (en) 2005-10-21 2014-05-27 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US20070104610A1 (en) 2005-11-01 2007-05-10 Houston Edward J Plasma sterilization system having improved plasma generator
US7887534B2 (en) 2006-01-18 2011-02-15 Stryker Corporation Electrosurgical system
CA2574934C (en) 2006-01-24 2015-12-29 Sherwood Services Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US20070173813A1 (en) 2006-01-24 2007-07-26 Sherwood Services Ag System and method for tissue sealing
GB2436065A (en) 2006-03-16 2007-09-19 Gyrus Medical Ltd Morcellating device with bipolar cutting electrodes applying pulsed voltage
US9636188B2 (en) 2006-03-24 2017-05-02 Stryker Corporation System and method for 3-D tracking of surgical instrument in relation to patient body
EP2020943B1 (en) 2006-05-30 2015-07-08 ArthroCare Corporation Hard tissue ablation system
US8251989B1 (en) 2006-06-13 2012-08-28 Encision, Inc. Combined bipolar and monopolar electrosurgical instrument and method
US8034049B2 (en) 2006-08-08 2011-10-11 Covidien Ag System and method for measuring initial tissue impedance
US7799020B2 (en) 2006-10-02 2010-09-21 Conmed Corporation Near-instantaneous responsive closed loop control electrosurgical generator and method
US7736358B2 (en) 2006-10-02 2010-06-15 Conmed Corporation Electrosurgical generator and method for simulating output signals
US8070746B2 (en) 2006-10-03 2011-12-06 Tyco Healthcare Group Lp Radiofrequency fusion of cardiac tissue
ES2545120T3 (es) 2006-10-10 2015-09-08 Medical Device Innovations Limited Aparato para el tratamiento de tejido con radiación de microondas
US8192424B2 (en) 2007-01-05 2012-06-05 Arthrocare Corporation Electrosurgical system with suction control apparatus, system and method
USD574323S1 (en) 2007-02-12 2008-08-05 Tyco Healthcare Group Lp Generator
GB0708783D0 (en) * 2007-05-04 2007-06-13 Gyrus Medical Ltd Electrosurgical system
US8641704B2 (en) 2007-05-11 2014-02-04 Medtronic Ablation Frontiers Llc Ablation therapy system and method for treating continuous atrial fibrillation
US8388612B2 (en) 2007-05-11 2013-03-05 Covidien Lp Temperature monitoring return electrode
GB2456533A (en) 2008-01-16 2009-07-22 Gyrus Medical Ltd Selection method for multi-instrument electrosurgical system
US8108039B2 (en) * 2007-07-13 2012-01-31 Neuro Wave Systems Inc. Method and system for acquiring biosignals in the presence of HF interference
US8175590B2 (en) 2007-09-26 2012-05-08 Stryker Corporation System for preventing unintended activation of a medical device by a portable remote control console
US8460284B2 (en) 2007-10-26 2013-06-11 Encision, Inc. Multiple parameter fault detection in electrosurgical instrument shields
US8333760B2 (en) 2008-01-03 2012-12-18 Celon Ag Medical Instruments High frequency generator for electrosurgical cutting
US8045943B2 (en) 2008-01-29 2011-10-25 Freescale Semiconductor, Inc. High performance CMOS radio frequency receiver
US8409186B2 (en) 2008-03-13 2013-04-02 Covidien Lp Crest factor enhancement in electrosurgical generators
CA3022982C (en) 2008-03-31 2022-07-26 Applied Medical Resources Corporation Electrosurgical system
JP5552113B2 (ja) 2008-05-05 2014-07-16 ストライカー・コーポレイション ツール内部の電動ツール端子およびメモリ間に接続されている絶縁回路を備えた電動外科手術ツール
US8226639B2 (en) 2008-06-10 2012-07-24 Tyco Healthcare Group Lp System and method for output control of electrosurgical generator
DE102008038314A1 (de) 2008-06-30 2010-01-07 Erbe Elektromedizin Gmbh Elektrochirurgiegenerator zum Behandeln eines biologischen Gewebes, Verfahren zum Regeln einer Ausgangsspannung eines elektrochirurgischen Generators und entsprechende Verwendung des Elektrochirurgiegeneators
US8469956B2 (en) 2008-07-21 2013-06-25 Covidien Lp Variable resistor jaw
US9089360B2 (en) * 2008-08-06 2015-07-28 Ethicon Endo-Surgery, Inc. Devices and techniques for cutting and coagulating tissue
GB2462453B (en) 2008-08-06 2012-05-09 Gyrus Medical Ltd Electrosurgical instrument and system
US8242782B2 (en) 2008-09-30 2012-08-14 Vivant Medical, Inc. Microwave ablation generator control system
US8174267B2 (en) 2008-09-30 2012-05-08 Vivant Medical, Inc. Intermittent microwave energy delivery system
US8287527B2 (en) 2008-09-30 2012-10-16 Vivant Medical, Inc. Microwave system calibration apparatus and method of use
US8248075B2 (en) 2008-09-30 2012-08-21 Vivant Medical, Inc. System, apparatus and method for dissipating standing wave in a microwave delivery system
US8180433B2 (en) 2008-09-30 2012-05-15 Vivant Medical, Inc. Microwave system calibration apparatus, system and method of use
US20100082083A1 (en) 2008-09-30 2010-04-01 Brannan Joseph D Microwave system tuner
US8346370B2 (en) 2008-09-30 2013-01-01 Vivant Medical, Inc. Delivered energy generator for microwave ablation
US8852179B2 (en) 2008-10-10 2014-10-07 Covidien Lp Apparatus, system and method for monitoring tissue during an electrosurgical procedure
US8355799B2 (en) 2008-12-12 2013-01-15 Arthrocare Corporation Systems and methods for limiting joint temperature
US8162932B2 (en) 2009-01-12 2012-04-24 Tyco Healthcare Group Lp Energy delivery algorithm impedance trend adaptation
US8152802B2 (en) 2009-01-12 2012-04-10 Tyco Healthcare Group Lp Energy delivery algorithm filter pre-loading
US8262652B2 (en) 2009-01-12 2012-09-11 Tyco Healthcare Group Lp Imaginary impedance process monitoring and intelligent shut-off
US8574187B2 (en) 2009-03-09 2013-11-05 Arthrocare Corporation System and method of an electrosurgical controller with output RF energy control
US8597287B2 (en) 2009-03-17 2013-12-03 Stryker Corporation Method and system for varying output intensity of energy applied to an electrosurgical probe
US8672934B2 (en) 2009-03-17 2014-03-18 Stryker Corporation Method for adjusting source impedance and maximizing output by RF generator
US8257350B2 (en) 2009-06-17 2012-09-04 Arthrocare Corporation Method and system of an electrosurgical controller with wave-shaping
US9532827B2 (en) 2009-06-17 2017-01-03 Nuortho Surgical Inc. Connection of a bipolar electrosurgical hand piece to a monopolar output of an electrosurgical generator
US7956620B2 (en) 2009-08-12 2011-06-07 Tyco Healthcare Group Lp System and method for augmented impedance sensing
US8790335B2 (en) 2009-08-28 2014-07-29 Covidien Lp Electrosurgical generator
CN102550024B (zh) 2009-09-04 2015-08-19 皇家飞利浦电子股份有限公司 可伸缩图像编码和解码
PL2475319T3 (pl) 2009-09-11 2017-05-31 Erbe Elektromedizin Gmbh Urządzenie chirurgiczne wysokiej częstotliwości HF
US8377054B2 (en) 2009-09-24 2013-02-19 Covidien Lp Automatic control circuit for use in an electrosurgical generator
US20110071516A1 (en) 2009-09-24 2011-03-24 Tyco Healthcare Group Lp System and Method for Controlling Electrosurgical Output
US8652125B2 (en) 2009-09-28 2014-02-18 Covidien Lp Electrosurgical generator user interface
US8956349B2 (en) * 2009-10-09 2015-02-17 Ethicon Endo-Surgery, Inc. Surgical generator for ultrasonic and electrosurgical devices
US9168054B2 (en) * 2009-10-09 2015-10-27 Ethicon Endo-Surgery, Inc. Surgical generator for ultrasonic and electrosurgical devices
US8372067B2 (en) 2009-12-09 2013-02-12 Arthrocare Corporation Electrosurgery irrigation primer systems and methods
US10039588B2 (en) 2009-12-16 2018-08-07 Covidien Lp System and method for tissue sealing
EP2523620B1 (en) 2010-01-15 2019-06-19 Medtronic Advanced Energy LLC Electrosurgical device
US8747399B2 (en) 2010-04-06 2014-06-10 Arthrocare Corporation Method and system of reduction of low frequency muscle stimulation during electrosurgical procedures
US8845631B2 (en) 2010-04-28 2014-09-30 Medtronic Ablation Frontiers Llc Systems and methods of performing medical procedures
US8696659B2 (en) 2010-04-30 2014-04-15 Arthrocare Corporation Electrosurgical system and method having enhanced temperature measurement
US8655299B2 (en) 2010-06-03 2014-02-18 Broadcom Corporation Saw-less receiver with RF frequency translated BPF
ES2912092T3 (es) 2010-10-01 2022-05-24 Applied Med Resources Instrumentos electroquirúrgicos y conexiones a los mismos
US8685018B2 (en) 2010-10-15 2014-04-01 Arthrocare Corporation Electrosurgical wand and related method and system
US8568405B2 (en) 2010-10-15 2013-10-29 Arthrocare Corporation Electrosurgical wand and related method and system
US8998899B2 (en) 2010-11-08 2015-04-07 Bovie Medical Corporation Multi-button electrosurgical apparatus
US9504518B2 (en) 2010-11-29 2016-11-29 Medtronic Ablation Frontiers Llc System and method for adaptive RF ablation
US20120157985A1 (en) 2010-12-17 2012-06-21 Ballou Lisa M Global endometrial ablation device
US9379643B2 (en) 2010-12-23 2016-06-28 The Regents Of The University Of Colorado, A Body Corporate Electrosurgical generator controller for regulation of electrosurgical generator output power
US8747401B2 (en) 2011-01-20 2014-06-10 Arthrocare Corporation Systems and methods for turbinate reduction
US9265557B2 (en) 2011-01-31 2016-02-23 Medtronic Ablation Frontiers Llc Multi frequency and multi polarity complex impedance measurements to assess ablation lesions
JP5940643B2 (ja) * 2011-03-21 2016-06-29 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 誘導電力送信のための電力損失の計算
JP5303611B2 (ja) * 2011-06-29 2013-10-02 アンリツ株式会社 移動通信端末試験装置及び移動通信端末試験方法
KR101332090B1 (ko) * 2011-07-28 2013-11-22 삼성전기주식회사 액적 분사 장치
US9028479B2 (en) 2011-08-01 2015-05-12 Covidien Lp Electrosurgical apparatus with real-time RF tissue energy control
US9099863B2 (en) 2011-09-09 2015-08-04 Covidien Lp Surgical generator and related method for mitigating overcurrent conditions
WO2013086045A1 (en) 2011-12-06 2013-06-13 Domain Surgical Inc. System and method of controlling power delivery to a surgical instrument
US8932291B2 (en) 2012-04-13 2015-01-13 Covidien Lp Electrosurgical systems
CN102641152B (zh) 2012-05-22 2014-03-05 上海理工大学 基于fpga的高频电刀发生器
US9161813B2 (en) 2012-07-20 2015-10-20 Stryker Corporation RF energy console including method for vessel sealing
EP2879608B1 (en) 2012-08-03 2020-03-18 Stryker Corporation Systems for robotic surgery
JP6036024B2 (ja) 2012-08-31 2016-11-30 東芝ライテック株式会社 照明装置
US9008757B2 (en) 2012-09-26 2015-04-14 Stryker Corporation Navigation system including optical and non-optical sensors
GB2506377A (en) * 2012-09-27 2014-04-02 Creo Medical Ltd Electrosurgical apparatus comprising an RF generator, microwave generator, combining circuit and waveguide isolator
US9566120B2 (en) 2013-01-16 2017-02-14 Stryker Corporation Navigation systems and methods for indicating and reducing line-of-sight errors
US9270202B2 (en) 2013-03-11 2016-02-23 Covidien Lp Constant power inverter with crest factor control
WO2014159446A1 (en) 2013-03-14 2014-10-02 Ellman In Ternational, Inc. Electrosurgical systems
US10842563B2 (en) 2013-03-15 2020-11-24 Covidien Lp System and method for power control of electrosurgical resonant inverters
US9283028B2 (en) * 2013-03-15 2016-03-15 Covidien Lp Crest-factor control of phase-shifted inverter
US9498276B2 (en) * 2013-03-15 2016-11-22 Covidien Lp Systems and methods for narrowband real impedance control in electrosurgery
GB201305987D0 (en) 2013-04-03 2013-05-15 Gyrus Medical Ltd Electrosurgical system
US9839469B2 (en) 2013-09-24 2017-12-12 Covidien Lp Systems and methods for improving efficiency of electrosurgical generators
US10420607B2 (en) 2014-02-14 2019-09-24 Arthrocare Corporation Methods and systems related to an electrosurgical controller

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727874A (en) * 1984-09-10 1988-03-01 C. R. Bard, Inc. Electrosurgical generator with high-frequency pulse width modulated feedback power control
US6210403B1 (en) * 1993-10-07 2001-04-03 Sherwood Services Ag Automatic control for energy from an electrosurgical generator
RU2154436C2 (ru) * 1998-04-03 2000-08-20 Общество с ограниченной ответственностью "ЭФА" Электрохирургический аппарат
US20100016850A1 (en) * 2008-07-15 2010-01-21 Venus Technologies LTD. Esthetic device useful for increasing skin beautification and methods thereof
US20100063494A1 (en) * 2008-09-05 2010-03-11 Tyco Healthcare Group Lp Electrosurgical Apparatus With High Speed Energy Recovery
US20130053840A1 (en) * 2011-08-30 2013-02-28 Tyco Healthcare Group Lp System and Method for DC Tissue Impedance Sensing
US20140258800A1 (en) * 2013-03-11 2014-09-11 Covidien Lp Systems and methods for detecting abnormalities within a circuit of an electrosurgical generator

Also Published As

Publication number Publication date
WO2016070013A1 (en) 2016-05-06
US10524851B2 (en) 2020-01-07
US20160120590A1 (en) 2016-05-05
CN107106228B (zh) 2020-05-05
EP3212102A1 (en) 2017-09-06
CN107106228A (zh) 2017-08-29
EP3212102B1 (en) 2024-01-24
JP6481029B2 (ja) 2019-03-13
US20190298433A1 (en) 2019-10-03
EP3212100B1 (en) 2022-06-29
JP6397573B2 (ja) 2018-09-26
CN111317560B (zh) 2023-09-22
US10363086B2 (en) 2019-07-30
US20160120589A1 (en) 2016-05-05
US20160120591A1 (en) 2016-05-05
CN107112981B (zh) 2021-02-26
US10405915B2 (en) 2019-09-10
US11399885B2 (en) 2022-08-02
JP2017533029A (ja) 2017-11-09
US20220331000A1 (en) 2022-10-20
US20190350638A1 (en) 2019-11-21
CN107112981A (zh) 2017-08-29
WO2016070009A1 (en) 2016-05-06
US11426228B2 (en) 2022-08-30
EP3212100A1 (en) 2017-09-06
JP2017536170A (ja) 2017-12-07

Similar Documents

Publication Publication Date Title
CN107106228B (zh) 用于减少rf发生器中的泄漏电流的功率监测电路与方法
US11612424B2 (en) Methods of recognizing and eliminating arcs and arc induced plasma during energy delivery in tissue
US11076906B2 (en) Logarithmic amplifier, electrosurgical generator including same, and method of controlling electrosurgical generator using same
AU2014203332B2 (en) Systems and methods for operating an electrosurgical generator
US10507054B2 (en) System and method for detecting and supressing arc formation during an electrosurgical procedure
US6860881B2 (en) Multiple RF return pad contact detection system
CA2681255C (en) Microwave ablation generator control system
EP2022427A1 (en) System and method for return electrode monitoring
JP2006506172A (ja) 電気外科用発生器および出力電力を照合確認する方法
US20240149062A1 (en) Nanosecond pulsed electric field system
US20200384502A1 (en) System and Methods For Controlling Patient Leakage Current In A Surgical System
CN109768538B (zh) 一种消弧线圈并联可控电流源接地的全补偿方法及电路
CN209884313U (zh) 等离子体手术系统的手术电极短路监测装置
JP5039401B2 (ja) 絶縁監視装置
NZ573113A (en) An electric fence energizer
CN116885663A (zh) 一种热灸仪过流控制方法及电路
JP3730681B2 (ja) 電気手術装置
CA2769316A1 (en) System and method for detecting and suppressing arc formation during an electrosurgical procedure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant