УСТРОЙСТВО АВТОМАТИЧЕСКОГО РЕГУЛИРОВАНИЯ МОЩНОСТИ ТРАНЗИСТОРНОГО РАДИОПЕРЕДАТЧИКА

Использование: в области радиотехники, в частности в устройствах автоматического регулирования мощности транзисторного радиопередатчика с защитой от перегрузок. Технический результат: расширение возможности регулирования и повышение надежности транзисторного радиопередатчика. Сущность изобретения: устройство содержит последовательно соединенные усилитель мощности, блок согласования и нагрузку в виде антенны, датчик выходной мощности, соединенный с вторым входом второго блока сравнения и первым входом первого блока сравнения, выход которого соединен с входом аналогового ключа, выход аналогового ключа соединен с первым входом сумматора, а вход управления аналогового ключа соединен с выходом второго блока сравнения. Датчик мощности усилителя мощности соединен с первым входом второго блока сравнения, выход которого через пороговый элемент соединен с первым входом сумматора. Выход сумматора через регулируемый стабилизатор напряжения подключен к управляющему входу транзисторного радиопередатчика ...

Ламповый передатчик с дополнительными контурами

Стабилизатор СВЧ мощности на полупроводниковых диодах

Способ формирования синусоидальных колебаний лампового генератора

Широкополосный ферритовый ограничитель мощности

Ламповый генератор

Радиопередатчик

Устройство для стабилизации среднего тока магнетрона

Устройство для автоматического поддержания уровня выходной мощности передатчика

H.F. generator circuit for medical short wave therapy appts. - has quartz oscillator, level regulator and two power amplifiers for level control via OR gate

The h.f. generator includes a ladder network of circuits comprising a quartz oscillator (3), a controllable level regulator (4), a driving stage (5), an output stage (6) and a transformation network (7). The latter is followed by two T-networks (1,2 and a power and mismatch detector (LFM). The latter supplies the voltage sum (v), the difference voltage (r) and the collector a.c. voltage of the output stage. The voltage sum (V) and difference voltage (R) are fed to an analogue processing unit (11). The rectified h.f. collector voltage controls a phase regulator (10). Two amplifiers (V1,V2) in the analogue processing unit working in the power loop control the operating level via an OR gate (8). ADVANTAGE - Efficient, high spectral purity, good control characteristics.

Mikrowellen-Leistungsquelle

INDUCTION HEATED COOKING APPARATUS

MIKROWELLEN-IMPULS-SENDER

SCHUTZSCHALTUNG FUER HF-GENERATOREN

Circuitry for optimization of power consumption in a system employing multiple electronic components, one of which is always powered on

Abstract Circuitry for conserving power in a system employing multiple electronic components of which a first electronic component operates at a first frequency and is 5 continuously powered on by a power source. The system further includes a second electronic component operating at a second frequency different than that of the first frequency of the first electric component, the second electronic component being maintained in a powered off state in which no energy whatsoever is consumed by the second electronic component until energized in response to a power enabling signal 10 generated by the first electronic component based on demand of the particular function to be performed by the second electronic component. The first and second electronic components may be processors, wherein the frequency of the first processor is lower than that of the second processor.

POWER OSCILLATOR CONTROL ARRANGEMENT

Electrosurgical generator with adaptive power control

POWER AND MODULATION CONTROL SYSTEM

POWER AND MODULATION CONTROL SYSTEM

APPARATUS AND METHOD FOR CONTINUOUS VARIABLE REACTIVE IMPEDANCE CONTROL

An apparatus and method for continuous variable reactive impedance control. The apparatus and method enable the continuous variation of the reactive impedance of an oscillating circuit. A reactive component, in one embodiment a capacitor, is switched into the oscillating circuit for a duration at the beginning and end of each half cycle of the oscillation frequency. Through varying the duration, the oscillation frequency is varied between the frequency that occurs without the reactive component in the circuit and the frequency with the reactive component permanently in the circuit. A controller determines the duration and controls a switch coupled to the reactive component. The apparatus and method may be used to adjust the oscillation frequency of a resonant circuit or to match the resonant frequency to a driving frequency in a driven oscillating circuit so as to improve efficiency.

SELECTIVE PEAK POWER REDUCTION

The present invention provides a technique for reducing the peak power of a combined signal that has a first signal of a first modulation type and a second signal of a second modulation type. Based on the combined signal, peak reduction distortion is determined. The peak reduction distortion is configured such that, if applied to the entirety of the combined signal, excessive peaks throughout the combined signal would be reduced. However, instead of applying the entirety of the peak reduction distortion, a selected portion of the peak reduction distortion is applied to a corresponding portion of the combined signal to reduce the peak power of the combined signal.

Digital Transducer System

Hochfrequenzofen zur dielektrischen Erwärmung.

Dispositif régulateur de puissance pour ultra-hautes fréquences.

Kurzwellentherapieapparat.

Mikrowellen-Impuls-Sender

Dispositif à micro-onde pourvu d'un générateur de puissance micro-onde

СПОСІБ УПРАВЛІННЯ СИНХРОННИМ ГЕНЕРАТОРОМ

Спосіб управління синхронним генератором включає операції пуску, регулювання напруги, прийому навантаження, визначення режиму роботи, регулювання коефіцієнта потужності в режимах паралельної роботи, зняття навантаження і зупинення. Визначають режим роботи синхронного генератора на місцевому посту за взаємною зміною параметрів режиму синхронного генератора, передають управління синхронним генератором відповідно до режиму блоку управління напругою або блоку управління коефіцієнтом потужності і змінюють установлений опір параметричного стабілізатора напруги в залежності від значень напруги в автономному режимі і коефіцієнта потужності в режимах паралельної роботи синхронного генератора за допомогою контролера.

ELECTRICAL SUPPLY INSTALLATION FOR MIKROWELLENOEFEN

Radio frequency wave generator controlled and variable output power.

SIGNAL REFLECTOR AND CIRCULATOR SYNCHRONIZING AND COMBINING PLURALITY OF OSCILLATORS

PHASE-LOCKED LOOP SYSTEM

Dual mode power amplifier control interface with a two-mode general purpose input/output interface

In accordance with some embodiments, the present disclosure relates to a dual mode control interface that can be used to provide both a radio frequency front end (RFFE) serial interface and a two-mode general purpose input/output (GPIO) interface within a single digital control interface die. In certain embodiments, the dual mode control interface, or digital control interface, can communicate with a power amplifier. Further, the dual mode control interface can be used to set the mode of the power amplifier.

Бесступенчатый регул тор мощности

Радиопередатчик

Ламповый передатчик

Формирователь видеоимпульсов

Автогенератор переменного синусоидального напряжения

Радиопередатчик

Устройство для связи с нагрузкой выходного (анодно-сеточного) контура генератора сантиметровых волн

Ламповый генератор

Формирователь импульсов синхронизации

Ламповый передатчик

Ламповый генератор

ANORDNUNG ZUR ANPASSUNGSREGELUNG VON HF-ROEHRENGENERATOREN FUER INDUKTIONSERWAERMUNG

POWER AND MODULATION CONTROL IN AN AMPLITUDE MODULATOR SYSTEM

... 1527762 Amplitude modulators WESTING- HOUSE ELECTRIC CORP 15 Sept 1975 [30 Sept 1974] 37809/75 Heading H3R An RF amplitude modulator amplifier arrangement in which control and maintenance of the power output is obtained under varying line voltage conditions without varying modulation percentage comprises a comparator 18 responsive to a modulating signal at 22 and a variable amplitude reference signal at 20 to provide a pulse width modulated output signal whose duty ratio is dependent on the amplitude of the reference signal at 20, a variable biasing circuit 48 for determining the initial gross power output of 16, a control circuit 60-90 generating a control signal in dependence upon feed-back power output of 16 for varying the amplitude of the reference signal and a filter 32 responsive to the pulse width modulated output to provide to 16 a D.C. component of a predetermined level determining the average power output of 16 and an A.C. component i.e. the modulation signal. The pulse width ...

SWITCHING CONFIGURATION FOR ADJUSTING THE MICROWAVE ACHIEVEMENT OF MICROWAVE DEVICES.

MICROWAVE EMITTER

СПОСІБ СИНХРОНІЗАЦІЇ СИНХРОННИХ ГЕНЕРАТОРІВ І АВТОСИНХРОНІЗАТОР

Спосіб точної синхронізації синхронних генераторів і автосинхронізатор, удосконалення яких досягається за рахунок використання операцій попереднього виміру кута між синхронізовуваними напругами і включення підсумовування їх у момент часу, коли кут між ними приблизно дорівнює нулю і скасування операції збільшення різниці частот генераторів.

Output power adjustment method and device and electronic cigarette

CIRCUIT OF ADJUSTMENT FOR OSCILLATOR OF POWER

High frequency furnace for the dielectric heating

Device limiting device of amplitude to very broad band in ultra-high frequencies

Regulating devices of electric output

CIRCUIT OF ADJUSTMENT FOR OSCILLATOR OF POWER

Lamp oscillator for atomic frequency standards

An apparatus for providing excitation of a vapor discharge lamp includes a control circuit for controlling an oscillator circuit during an ignition mode of the vapor discharge lamp to establish and maintain a substantially constant DC voltage at an output of an oscillator transistor and to establish a current flow through the oscillator transistor at a first current level sufficient to ignite the vapor discharge lamp, and for controlling the oscillator after ignition of the vapor discharge lamp to maintain the substantially constant DC voltage at the output of the oscillator transistor while reducing the current flow through the oscillator transistor from the first current level to a second current level, and in preferred embodiments, includes circuitry to suppress unwanted blocking oscillations and optimize the dynamic range of the control circuitry.

LEVEL SHIFT CIRCUIT

There is provided a level shift circuit free from malfunction. The level shift circuit converts a signal of a first power supply voltage of a first supply terminal, which is supplied to an input terminal, into a signal of a second power supply voltage of a second supply terminal and outputs the converted signal to an output terminal. The level shift circuit has a control circuit that detects when the first power supply voltage reduces below a predetermined voltage. The voltage of the output terminal of the level shift circuit is fixed to the second power supply voltage or a ground voltage according to a detection signal of the control circuit.

УСТРОЙСТВО РЕГУЛИРОВАНИЯ МОЩНОСТИ ИЗЛУЧЕНИЯ РАДИОПЕРЕДАТЧИКА

Устройство регулирования мощности излучения радиопередатчика, содержащее последовательно соединенные возбудитель и делитель мощности с N выходами, последовательно соединенные сумматор мощности с N входами и нагрузку, а также N-1 коммутируемых усилителей мощности, при этом 1-й, 2-й, ... (N-1)-й коммутируемый усилители мощности включены соответственно между 1-м, 2-м ... (N-1)-м выходом делителя мощности с N выходами и 1-м, 2-м ... (N-1)-м входом сумматора мощности с N входами, отличающееся тем, что, с целью обеспечения плавного регулирования мощности при расширении диапазона регулирования мощности, введен плавно регулируемый усилитель мощности, который включен между N-м выходом делителя мощности с N выходами и N-м входом сумматора мощности с N входами, при этом шины питания N-1 коммутируемых усилителей мощности и плавно регулируемого усилителя мощности являются управляющими входами устройства регулирования мощности излучения радиопередатчика.

Генератор гармонических колебаний

Зарядное устройство кодовоимпульсного модулятора

Устройство автоматического регулирования выходной мощности передатчика

Изобретение относится к радиотехнике, Цель изобретения - повышение плавности регулирования путем исключения выбросов и провалов в выходном сигнале. Для этого последовательно соединенные формирователь 16 управляющих сигналов (ФУС), блок 1 опорных частот, амплитудный модулятор 2, широкополосный усилитель 3, перестраиваемый усилитель 4 мощности, первый амплитудный детектор 5, управляемый переключатель 6, первый фильтр 7 нижних частот (ФНЧ), пороговый элемент 8 и блок 9 сравнения, на другой вход которого подается сигнал с последовательно соединенных третьего амплитудного детектора 12, второго фильтра 13 нижних частот и усилителя 14 постоянного тока (УПТ), вырабатывают сигнал , управляющий амплитудным модулятором 2. В процессе автоматического регулирования ФУС 16, третий и четвертый выходы которого соединены соответственно с вторым входом управляемого переключателя 6, подключающего поочередно первый 5 и второй 10 амплитудные детекторы к входу первого ФНЧ 7 и к второму входу перестраиваемого ...

Способ радиопередачи

Устройство регулирования и автоматической стабилизации выходной мощности сверхвысокочастотного генератора

Изобретение относится к радиотехнике. Цель изобретения - повышение стабильности установленного уровня выходной мощности. Устройство содержит дифференциальный усилитель 1, элемент сравнения 2, управляемый аттенюатор 3, направленный ответвитель 4, СВЧ-детектор 5, аналоговый перемножитель 6, источник 7 установочного напряжения и источник 8 опорного напряжения. При установке различных уровней выходной мощности СВЧ г-ра, эти уровни задаются сигналом, поступающим на вход управления аттенюатора 3 с выхода элемента сравнения 2, который формируется в результате сравнения сигналов, поступающих на его входы с источника 7 и усилителя 1. После установки требуемого уровня обеспечивается его стабилизация. Для этого сигнал на входе управления аттенюатора 3 изменяется таким образом, что компенсируются отклонения выходной мощности СВЧ г-ра от установленного уровня. 1 ил.

Устройство стабилизации выходной мощности генератора качающейся частоты

Изобретение относится к радиотехнике и может быть использовано в радиоизмерительной аппаратуре. Цель изобретения - уменьшение неравномерности выходной мощности. Для достижения цели в устройство, содержащее усилитель 6 постоянного тока, г-р 7 качающейся частоты, направленный ответвитель 8 и датчик 9 мощности, введены г-р 1 тактовых импульсов, двоичный счетчик 2, два блока 3 и 4 постоянной памяти и два ЦАП 5 и 10. Частотно-зависимый характер передаточной функции цепи отрицат. обратной связи обуславливает выравнивание уровня мощности на выходе устройства с точностью до неравномерности АЧХ цепи отрицат. обратной связи. Необходимое при этом дополнительное выравнивание осуществляется формированием корректирующих сигналов на дискретных фиксированных частотах. Эти сигналы посредством цепи прямой связи вводятся в качестве дискретно меняющихся опорных уровней сравнения. Цепь прямой связи образована блоком 4 и ЦАП 5. Формируя необходимую для заданной частоты величину опорного сигнала, можно стабилизировать ...

Генератор гармонических колебаний с внешним возбуждением

Устройство для автоматической регулировки мощности в свип-генераторах СВЧ-диапазона

HF transistorised power generator - has two auxiliary circuits optimising output stage current and voltage swings by comparing with reference

The HF power generator has its resonant load circuit coupled via an impedance transformer to the output of its amplifier. A first auxiliary circuit is used to set optimum voltage swing, and a second auxiliary circuit to set optimum current swing at the output stage transistors. The auxiliary circuits measure the voltage and current in the output stage and compare them with references. The result is used to initiate the adjustments. If changes are too fast for the auxiliary circuits to respond at the proper time, a protection circuit operates and reduces the excessive swing.

TALDETEKTIONSSCHALTUNG UND ANTRIEBSSCHALTUNG

Es wird eine Technik zum Detektieren eines Talzeitpunkts zu niedrigeren Kosten beschrieben. Eine Antriebsschaltung beinhaltet einen Spitzenspannungshalter, einen Talspannungshalter, einen Mittenspannungsgenerator, eine Überwachungseinheit und einen Detektor. Der Spitzenspannungshalter hält eine Spitzenspannung eines oszillierenden Signals, das auf einer Spannung an einem Anschluss eines Induktors basiert, der mit einem Schaltelement gekoppelt ist. Der Talspannungshalter hält eine Talspannung des oszillierenden Signals. Der Mittenspannungsgenerator generiert eine Mittenspannung basierend auf der Talspannung. Die Überwachungseinheit überwacht den vorliegenden Wert der Spannung am Anschluss. Der Detektor detektiert, als Talzeitpunkt, einen Zeitpunkt, an dem eine vorbestimmte Verzögerungszeit nach einem Zeitpunkt abgelaufen ist, an dem der überwachte vorliegende Wert der Spannung am Anschluss unter die Mittenspannung abgefallen ist.

Verfahren und Vorrichtung zum Schutz von an einen Hochfrequenzgenerator angeschlossenen passiven Komponenten

Ein Verfahren zum Schutz von an einen Hochfrequenzgenerator (11, 11.1, 51, 52) angeschlossenen passiven Komponenten (14, 53, 54) umfasst die Verfahrensschritte: a. Erzeugen einer Hochfrequenzleistung bei einer Grundfrequenz mittels des Hochfrequenzgenerators (11, 11.1, 51, 52); b. Übertragen der Hochfrequenzleistung an eine Last (16) über ein Hochfrequenzkabel (14, 53, 54); c. Ermitteln einer mit der Hochfrequenzbelastung zumindest einer an den HF-Generator angeschlossenen passiven Komponente, insbesondere des Hochfrequenzkabels (14, 53, 54), in Beziehung stehenden Größe; d. Vergleich der ermittelten Größe mit einer die maximale Belastung zumindest einer angeschlossenen passiven Komponente beschreibenden Referenzgröße e. Anpassung der vom Hochfrequenzgenerator (11, 11.1, 51, 52) bei der Grundfrequenz erzeugten Hochfrequenzleistung in Abhängigkeit von dem Vergleichsergebnis.

Electrical control arrangement

... 1,013,546. Automatic tuning control. STANDARD TELEPHONES & CABLES Ltd. Aug. 17, 1962, No. 31657/62. Heading H3A. An electrical control arrangement in which a parameter of a variable element, e.g. a tuning capacitor or coil, is controlled by a parameter of an input signal, e.g. for tuning a transmitter tank circuit or an oscillator to the frequency of an input signal or for matching an aerial to a tank circuit, comprises means for deriving a first error signal from a course comparator, e.g. a frequency discriminator, means for deriving a second error signal from a fine comparator, e.g. a phase discriminator, and means for controlling the element in accordance with the first signal when the error exceeds a set value and with the second signal when the error is below said value. Tank circuit 4 is tuned by variable capacitors 5, 6 and coil 4 which are coupled, with variable capacitor 14 of a frequency discriminator 11, to the drive shaft of a reversible motor 45. An input signal at terminals ...

Providing an oscillating signal to a load

An apparatus for providing an oscillating signal to a load comprises: a phase locked loop, PLL, comprising a feedback loop; a power control means for manipulating oscillating signal power; an isolator for isolating the feedback loop from the load; and a mode selector coupled to the power control means and the isolator, for controlling the power control means and the isolator so that in a steady state power mode, oscillation power is supplied to the load and in a reduced power mode, power is isolated by the isolator from the load to the feedback loop so that phase lock is maintained when the oscillation power is reduced.

POWER OSCILLATOR CONTROL ARRANGEMENT

AM radio transmitter apparatus

The present invention concerns circuitry for comparing the output power of an amplitude modulated RF transmitter with the supply power to the RF transmitter and using feedback from a comparator to a variable gain modulation amplifier to maintain the level of modulation constant. The scheme is illustrated for four different basic types of RF amplitude modulated transmitters.

Automatic tuning arrangements

... 1,039,553. Automatic tuning control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 12, 1965 [Feb. 14, 1964], No. 6220/64. Heading H3A. A transmitting aerial 5 is automatically tuned by deriving across a resistor 6, in the emitter circuit of a power amplifier 1 energizing the aerial, a voltage representative of the transmitted power and applying this and a reference, voltage, derived from a potentiometer 9, 10, between the emitter and base of a transistor 8 whose output controls the inductance of a loading coil 16 in the aerial so that the aerial is tuned to maximum power output. The control may be applied to a toroidal winding 11, Fig. 3 (not shown), on a ferrite pot core tank inductance to vary its permeability; reducing its inductance until the aerial, initially tuned off resonance, is brought to near resonance.

Improvements in or relating to short-wave therapy apparatus

... 710,669. Automatic frequency control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 7, 1952 [Jan. 9, 1951], No. 470/52. Class 38(4) The treatment circuit of a short-wave medical apparatus is kept in resonance with the oscillations of a frequencystabilized 'source by comparing the phase of the voltages in the source and the treatment circuits, and deriving therefrom a control voltage for corrective adjustment of a tuning impedance in the treatment circuit. As shown in the diagram, the tuned circuit 8 of the h.f. source is inductively coupled to the treatment circuit 21, 22. A phase-comparing valve 1 which may be of the nonode type has one control grid 5 energized by a coil 7 coupled to the circuit 8, and the other control grid 6 coupled by a coil 11 in the treatment circuit. When the treatment circuit is in tune the two grids are excited in quadraturo relation. and departure from this relation increases or decreases the relative phase angle, and correspondingly affects the anode current ...

Improvements in or relating to electrical automatic tuning circuit arrangements suitable for use on high frequencies

... 608,265. Phase measurement. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 8, 1946, No. 4054. Convention date, Feb. 9, 1945. [Class 37] [Also in Group XXXVIII] A circuit is automatically tuned to an injected frequency, a change of which causes the circuit to be reduced to a resonant frequency below the injected frequency so that the circuit cannot be tuned to an harmonic of the injected frequency. Automatic tuning.-An oscillator 10, whose frequency is determined by a replacable crystal 12 and replacable tank circuits 16, 18 feeds an amplifier T2 and a circuit 30 to be tuned; oscillations from circuits 18, 30 are applied to a phase discriminator 60 to render one or other of thyratrons 74 conducting according to which oscillation leads in phase; the thyratrons energize the stator windings 80, 82 of a reversible motor which adjusts the tuning element of circuit 30. When the crystal 12 is removed for replacement, contacts 101 are closed to earth line 102 and the grid 71 of valve 60 over contact ...

MICROWAVE EMITTER

Digital transducer system

CIRCUITRY FOR OPTIMIZATION OF POWER CONSUMPTION IN A SYSTEM EMPLOYING MULTIPLE ELECTRONIC COMPONENTS, ONE OF WHICH IS ALWAYS POWERED ON

Circuitry for conserving power in a system employing multiple electronic components of which a fast electronic component operates at a first frequency and is continuously powered on by a power source. The system further includes a second electronic component operating at a second frequency different than that of the first frequency of the first electric component, the second electronic component being maintained in a powered off state in which no energy whatsoever is consumed by the second electronic component until energized in response to a power enabling signal generated by the first electronic component based on demand of the particular function to be performed by the second electronic component. The first and second electronic components may be processors, wherein the frequency of the first processor is lower than that of the second processor.

AUTOMATIC MODULATION CONTROL APPARATUS

PATENT APPLICATION ON AUTOMATIC MODULATION CONTROL APPARATUS BY FOREST M. CUMMINGS AND JACK S. SELLMEYER The present invention concerns circuitry for comparing the output power of an amplitude modulated RF transmitter with the supply power to the RF transmitter and using feedback from a comparator to a variable gain modulation amplifier to maintain the level of modulation constant. The scheme is illustrated for four different basic types of RF amplitude modulated transmitters.

INDUCTIVELY-COUPLED RF POWER SOURCE

A system and method are disclosed for implementing a power source including a power amplifier that generates a radio-frequency power signal with an adjustable operating frequency. The power amplifier also generates a reference phase signal that is derived from the radio-frequency power signal. An impedance match provides the radio-frequency power signal to a plasma coil that has a variable resonance condition. A phase probe is positioned adjacent to the plasma coil to generate a coil phase signal corresponding to the adjustable operating frequency. A phase-locked loop then generates an RF drive signal that is based upon a phase relationship between the reference phase signal and the coil phase signal. The phase-locked loop provides the RF drive signal to the power amplifier to control the adjustable operating frequency, so that the adjustable operating frequency then tracks the variable resonance condition.

INDUCTIVELY-COUPLED RF POWER SOURCE

A system and method are disclosed for implementing a power source including a power amplifier that generates a radio-frequency power signal with an adjustable operating frequency. The power amplifier also generates a reference phase signal that is derived from the radio-frequency power signal. An impedance match provides the radio-frequency power signal to a plasma coil that has a variable resonance condition. A phase probe is positioned adjacent to the plasma coil to generate a coil phase signal corresponding to the adjustable operating frequency. A phase-locked loop then generates an RF drive signal that is based upon a phase relationship between the reference phase signal and the coil phase signal. The phase-locked loop provides the RF drive signal to the power amplifier to control the adjustable operating frequency, so that the adjustable operating frequency then tracks the variable resonance condition.

Based on intermediate-frequency detection of a vector network analyzer power control method

Device capable of expanding multipath 10 MHz reference signal and feeding

Variable output power magnetron parameter control - has relay controlled motor driven piston within one cavity and potentiometer controls electro magnet current

DISPOSITIF DE CONTROLE DES PARAMETRES DE FONCTIONNEMENT D'UN MAGNETRON A PUISSANCE DE SORTIE REGLABLE

Ce dispositif assure le contrôle des différents paramètres (fréquence F, courant I, champ magnétique H) de fonctionnement d'un magnétron qui peut délivrer des signaux H.F. de sortie de différentes puissances par variation de la puissance qui lui est appliquée, le fonctionnement du magnétron restant optimum pour la fréquence et la puissance de sortie sélectionnées. Ce dispositif comporte un système d'asservissement, imposant, pour une puissance P, de sortie sélectionnée, et une fréquence F sélectionnée, le courant I de fonctionnement du magnétron et le champ magnétique H correspondant. Un système d'accord de fréquence du magnétron peut être commandé par le système d'asservissement. Application : alimentation H.F. d'un accélérateur de particules à énergie réglable.

Automatic tuner of transmitter

Generator of waves radio frequencies to power of variable and controlled exit

Le générateur selon l'invention comporte un convertisseur numérique-analogique (11) recevant sur une première entrée une information numérique correspondant à une valeur d'atténuation déterminée de la puissance (PS ) du signal de sortie (S), et recevant sur une deuxième entrée un courant de référence (Ir é f ) variable qui est fonction de la valeur d'atténuation (N) sélectionnée sur le CNA, et dont la sortie est couplée à un amplificateur (12) dont la sortie est couplée sur l'entrée par une résistance (R3 ) de contre-réaction de l'amplificateur (12), la sortie de l'amplificateur (12) étant en outre rebouclée sur l'entrée du convertisseur (11) par une boucle (13) comportant au moins une résistance (R2 ) pour faire varier le courant de référence (Ir é f ) de manière quasi exponentielle en fonction des valeurs des résistances (R1 , R2 et R3 ) du dispositif de commande (10) et obtenir en sortie de l'amplificateur (12) une tension de consigne (Vc ) dont la variation est quasiment identique à ...

Process and device for obtaining an automatic syntonization on the high frequency generators

AUTOMATIC POWER CONTROL

High frequency surgical generator comprising an additional transformer

An HF surgical appliance comprising an HF generator having an output circuit, which contains an output transformer and has an output impedance. Output terminals, to which an HF surgical instrument can be connected, are provided, said instrument supplying a high-frequency current with a specific frequency into tissue to treat the same. An additional output circuit containing an additional transformer, which is connected between the output circuit and the output terminals to reduce the output impedance is also provided. In this way, the HF surgical appliance can be operated with a high power output even on loads having low impedance.

Geo-Location Addition to Electrosurgical Generator

A system and method for determining the location of an electrosurgical generator using a geo-location device within the generator. The geo-location device determines the location of the generator and the controller sets a default language of the generator based on the determined location. The default language may be overridden by a user when necessary. The geo-location device is coupled to a communication port. The communication port allows for a wireless signal to be sent upon the generator being reported stolen or for tracking location of the generators. The communication port is coupled to the controller to allow for remote disablement, for example in response to the generator being stolen. Alternatively, the controller may disable the generator when the geo-location device determines that the generator has moved outside a predetermined location.

Electrosurgical assembly and electrosurgical instrument

An electrosurgical assembly is disclosed having an electrosurgical instrument, a detection device for detecting a predetermined constituent of the atmosphere in the region of a treatment site and a treatment unit, which can be connected to the instrument and a current generator for providing RF energy. The treatment unit includes a mechanism for influencing the treatment process depending on an output signal of the detection device.

Electrosurgical Apparatus With Predictive RF Source Control

An electrosurgical generator is disclosed, which includes a closed loop control system having a sensor system configured to sense tissue and/or energy properties at a tissue site and to generate a sensor signal representative of the tissue and/or energy properties. The control system includes a controller configured to select an electrosurgical operational mode from a plurality of electrosurgical operational modes in response to the sensor signal. A radio frequency arbitrary source is also included which generates a radio frequency input signal corresponding to the selected electrosurgical operational mode and a radio frequency output stage configured to generate a treatment signal corresponding to the electrosurgical operational mode. The system includes a predictive signal processor configured to adjust the radio frequency output stage in response to the radio frequency input signal, such that the radio frequency output stage alters the treatment signal in real time based on the selected electrosurgical operational mode.

High-frequency surgical device

The invention relates to a high-frequency surgical device for generating high-frequency energy for cutting and/or coagulating biological tissue. The high-frequency surgical device comprises an application part being electrically connectable to an electrosurgical instrument having at least one activation switch, an intermediary power circuit galvanically separated from the application part, a DC power source which, in operation, provides in the application part at least one DC voltage, a with the DC voltage source electrically connected control signal generator which, in operation, generates in the application part ( 10 ) from the DC voltage an alternating control signal with a predetermined switching frequency, and a to the control signal generator electrically connected evaluation unit being electrically connectable to the activation switch of the instrument and which, when the activation switch is actuated, transmits a with the switching frequency oscillating activation signal to the input power circuit.

BATTERY DRAIN KILL FEATURE IN A BATTERY POWERED DEVICE

A medical instrument is disclosed. The medical instrument includes at least one electrical contact, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, a battery discharge circuit coupled to the RF generation circuit, a processor coupled to the battery discharge circuit, and a memory coupled to the processor. The memory stores computer instructions that when executed cause the processor to monitor battery capacity and send a signal to the battery discharge circuit to discharge a battery coupled to the battery discharge circuit when the battery capacity falls below a predetermined threshold. 1. A medical instrument , comprising:at least one electrical contact;a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact;a battery discharge circuit coupled to the RF generation circuit;a processor coupled to the battery discharge circuit; anda memory coupled to the processor, the memory stores computer instructions that when executed cause the processor to:monitor battery capacity; andsend a signal to the battery discharge circuit to discharge a battery coupled to the battery discharge circuit when the battery capacity falls below a predetermined threshold.2. The medical instrument according to claim 1 , wherein the processor is configured to:monitor capacity of a battery coupled to the battery discharge circuit; anddetermine when the battery capacity is below a predetermined threshold;wherein, when the processor determines that the battery capacity is below the predetermined threshold, the processor outputs the signal to the battery discharge circuit to controllably discharge the battery.3. The medical instrument according to claim 1 , wherein the battery discharge circuit comprises an ...

TRIGGER LOCKOUT MECHANISM

A medical instrument includes a housing, an RF generation circuit activation button coupled to an activation button lever supported by the housing. The activation button lever includes a top surface, the activation button lever rotatable about an activation button pivot point. A cutting blade is operably coupled to a sheath. A control lever is supported by the housing and pivotally coupled to a trigger lever including a projection to engage the top surface of the activation button lever and to control the actuation of the cutting blade by actuating the sheath in a distal direction by rotatably moving the control lever proximally about a trigger pivot point. The top surface of the activation button lever and the projection of the trigger lever remain engaged to prevent actuation of the cutting blade until the activation button is fully rotatably moved proximally about the activation button pivot. 1. A medical instrument , comprising:a housing;at least one electrical contact;a radio frequency (RF) generation circuit coupled to and operated by a battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact;an activation button coupled to an activation button lever supported by the housing, the activation button controls the activation of the RF generation circuit to apply the RF drive signal to the at least one electrical contact, the activation button lever comprising a top surface, the activation button lever rotatable about an activation button pivot point;a cutting blade operably coupled to a sheath; anda control lever supported by the housing and pivotally coupled to a trigger lever comprising a projection to engage the top surface of the activation button lever, the control lever is operable to control the actuation of the cutting blade by actuating the sheath in a distal direction when the control lever is rotatably moved proximally about a trigger pivot point;wherein the top surface of the ...

Generator, Combination of a Generator and a Catheter, and Method for Providing an Electrical Pulse

The invention provides systems, methods, and apparatus for use in ablation procedures. The invention includes a generator with at least one indifferent lead and at least one catheter lead for connecting an indifferent electrode and a catheter provided with at least one electrode, a charging unit arranged to charge an amount of electrical energy and to discharge an electrical pulse of a predetermined magnitude between the two electrode leads, a power supply arranged to supply electrical energy to the charging unit, an input unit arranged for inputting an indication of the magnitude of the pulse, and a measuring unit arranged between the electrode leads for measuring at least one electrical property between the leads. Numerous additional aspects are provided. 1. A generator for use in an ablation procedure , comprising:at least one indifferent lead and at least one catheter lead for connecting an indifferent electrode and a catheter provided with at least one electrode;a charging unit arranged to charge an amount of electrical energy and to discharge an electrical pulse of a predetermined magnitude between the two electrode leads;a power supply arranged to supply electrical energy to the charging unit;an input unit arranged for inputting an indication of the magnitude of the pulse; anda measuring unit arranged between the electrode leads for measuring at least one electrical property between the leads.2. The generator of claim 1 , further comprising a control unit which is arranged to adjust the magnitude of the electrical pulse discharged by the charging unit based on the electrical property measured by the measuring unit.3. The generator of claim 2 , wherein the measuring unit is arranged to determine the impedance between the electrode leads prior to discharge of the pulse.4. The generator of claim 3 , wherein the input unit is arranged to input an electrical charge setting as a measure of the indication of the magnitude of the pulse and wherein the control unit is ...

Multiphase Electrical Power Assignment at Minimal Loss

In a multiphase electrical power assignment, a processor: receives instructions to connect a bi-directional power device to a multiphase premise power source; determines that the power device is to be coupled to a target phase's phase connection; confirms that the power device is not coupled to any phase connections; and couples the power device to the phase connection, where the power device's power signal is synchronized with the phase connection's power signal. When the power device is in a connected state, the processor: issues a command to place each phase connection switch in an open state; in response to confirming that the phase connection switches are in the open state, issues commands to the power device so that a power signal of the power device will be synchronized with the target phase; and closes the phase connection switch corresponding to the target phase.

Power-up signal generation circuit

A power-up signal generation circuit includes: a first section signal generation unit configured to sense a level of an external voltage and a level of an internal voltage and generate a first section signal; a second section signal generation unit configured to output a second section signal by buffering the first section signal when the internal voltage is lowered to below a minimum level; and a selective output unit configured to output the first section signal as a power-up signal, wherein the selective output unit outputs the second section signal as the power-up signal when a power-up section is ended and a mode register setting operation is performed.

ELECTROSURGICAL APPARATUS WITH HIGH SPEED ENERGY RECOVERY

A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal generated by the power supply and a feedback signal generated in response to the application of energy to tissue. A discharge circuit is configured to control the discharge of the output of the power supply to an inductive load disposed in parallel with the output of the power supply based on the comparison between the output signal and the feedback signal. The discharge circuit provides a rapid response and time rate control of the delivered electrosurgical energy by controlling the power supply and delivered RF energy in real time, based on a feedback signal generated in response to the application of energy to tissue. 1. A method for controlling the discharging of stored energy in an electrosurgical generator comprising the steps of:applying energy stored in an output of a power supply to tissue;generating at least one control signal based on at least one of a sensed tissue property and a sensed power delivery property;generating an error signal based on a comparison between the at least one control signal and the energy stored in the output;discharging the stored energy to an inductive load in parallel with the output of the power supply based upon the comparison between the energy stored in the output and the control signal;activating a first switching component to discharge the stored energy to the inductive load;activating a second switching component based on the discharge of the stored energy to control the activation of the first switching component;providing a resistive element connected in series between the first switching component and ground; andcontrolling a second switching component based on a voltage across the resistive element generated by the discharge ...

SYSTEM AND METHOD FOR POWER SUPPLY NOISE REDUCTION

An electrosurgical system includes an electrosurgical generator, a power source configured to deliver power to at least one load connected to the generator, a master configured to generate an initial pulse, the initial pulse cooperating with a first floating power supply configured to create an electrical connection between at least one first load and the power source, and a plurality of slaves connected in series to the master, wherein a first slave is configured to generate a subsequent pulse based on the initial pulse, the subsequent pulse cooperating with a second floating power supply configured to create an electrical connection between at least one second load and the power source, the subsequent pulse configured to cause an ensuing slave to generate an additional pulse, the additional pulse cooperating with a corresponding floating power supply configured to create an electrical connection between at least one additional load and the power source. 1. An electrosurgical system , comprising:an electrosurgical generator adapted to supply electrosurgical energy to tissue;a power source operably coupled to the electrosurgical generator and configured to deliver power to at least one load connected to the electrosurgical generator;a master device configured to generate an initial pulse signal, the initial pulse signal electrically cooperating with a first floating power supply configured to create an electrical connection between at least one first load and the power source; anda plurality of slave devices connected in series to the master device, wherein a first slave device is configured to generate a subsequent pulse signal based on the initial pulse signal, the subsequent pulse signal electrically cooperating with a second floating power supply configured to create an electrical connection between at least one second load and the power source, the subsequent pulse signal configured to cause an ensuing slave device to generate an additional pulse signal, the ...

HANDHELD ELECTROSURGICAL GENERATOR

A handheld electrosurgical generator including a pen, internal controller, signal generator, and RF amplifier. The pen electro-mechanically connects to an electrosurgical needle. The controller is embedded within the pen to control the RF output at the electrosurgical needle tip. An electrosurgical system incorporates the handheld electrosurgical generator along with at least one of a data processing unit and a data entry point in communication with the controller of the handheld electrosurgical generator. 1. A handheld electrosurgical generator comprising:a pen having a mechanical interconnect to attach an electrosurgical needle;a contact associated with the pen to provide an electrical connection between the pen and the electrosurgical needle; anda controller embedded in the pen and associated with the contact to control electrical output at the electrosurgical needle.2. The handheld electrosurgical generator of claim 1 , further comprising a power source associated with the contact to provide electrical power to the electrosurgical needle.3. The handheld electrosurgical generator of claim 2 , wherein the power source outputs about 3-12 volts DC.4. The handheld electrosurgical generator of claim 2 , wherein the power source is exterior of the pen.5. The handheld electrosurgical generator of claim 4 , wherein the power source includes a disposable electrosurgical grounding pad with an integrated battery and is connected to the pen by a power cable.6. The handheld electrosurgical generator of claim 5 , wherein the integrated battery has a positive terminal on one side of a body patch and a negative terminal on the opposite side of the body patch claim 5 , the negative side of the body patch for affixing to a patient's body to make a good grounding contact.7. The handheld electrosurgical generator of claim 6 , further comprising at least one of an adhesive and an electrolytic gel to affix the body patch to the patient's body.8. The handheld electrosurgical generator ...

METHOD OF USER INTERFACES FOR ELECTROSURGICAL TOOLS IN ROBOTIC SURGICAL SYSTEMS

A method for a minimally invasive surgical system is disclosed including capturing camera images of a surgical site; generating a graphical user interface (GUI) including a first colored border portion in a first side and a second colored border in a second side opposite the first side; and overlaying the GUI onto the captured camera images of the surgical site for display on a display device of a surgeon console. The GUI provides information to a user regarding the first electrosurgical tool and the second tool in the surgical site that is concurrently displayed by the captured camera images. The first colored border portion in the GUI indicates that the first electrosurgical tool is controlled by a first master grip of the surgeon console and the second colored border portion indicates the tool type of the second tool controlled by a second master grip of the surgeon console. 111-. (canceled)12. A minimally invasive surgical method comprising:swapping control from a first side having a first robotic surgical tool mounted to a first robotic arm controlled by a first master grip of a surgeon console to a second side having a second robotic surgical tool mounted to a second robotic arm controlled by a second master grip of the surgeon console;swapping a control icon from a first side of a graphical user interface (GUI) to a second side of the GUI; andif the second robotic surgical tool is a supply controllable tool and a remote controlled supply equipment is under control of a user input device to supply the second robotic surgical tool, then displaying an active control border and an active control icon in the second side of the GUI and an inactive control border in the first side of the GUI to provide information to a user.13. The method of claim 12 , further comprising:if the second robotic surgical tool is not a supply controllable tool, then displaying an inactive control border and an inactive control icon in the second side of the GUI and an inactive control ...

RENAL DENERVATION AND STIMULATION EMPLOYING WIRELESS VASCULAR ENERGY TRANSFER ARRANGEMENT

Devices, systems, and methods provide for intravascular or extravascular delivery of renal denervation therapy and/or renal control stimulation therapy. Wireless vascular thermal transfer apparatuses and methods provide for one or both of production of current densities sufficient to ablate renal nerves and terminate renal sympathetic nerve activity, and production of current densities sufficient to induce endothelium dependent vasodilation of the renal artery bed. A common apparatus may be used for both renal ablation and control of renal function locally after renal denervation. 1a stent dimensioned for deployment within the renal artery, the stent adapted for chronic fixation within the renal artery;an electrode arrangement supported by the stent;an antenna arrangement supported by the stent and electrically coupled to the electrode arrangement, the antenna arrangement configured to receive energy from a power source external of the renal artery; an ablation configuration that produces current densities sufficient to ablate innervated renal nerve tissue at or proximate the renal artery; and', 'a stimulation configuration that produces current densities sufficient to induce endothelium dependent vasodilation of a renal artery bed;, 'the electrode and antenna arrangements operative in at least one ofwherein the power source supplies energy to the antenna arrangement other than by way of a percutaneous electrical lead for at least the stimulation configuration.. An apparatus for intravascular delivery of a therapy to a renal artery of a patient, comprising: The present application is a continuation of U.S. application Ser. No. 13/157,844, filed Jun. 10, 2011, now U.S. Pat. No. 8,473,067, which claims the benefit of Provisional Patent Application Ser. No. 61/353,853 filed on Jun. 11, 2010, to which priority is claimed under 35 U.S.C. §119(e), the entire contents of which are incorporated herein by reference.The present invention is related to systems and methods for ...

DEVICES AND TECHNIQUES FOR CUTTING AND COAGULATING TISSUE

Various forms are directed to systems and methods for driving an end effector coupled to an ultrasonic drive system of a surgical instrument. A generator may generate at least one electrical signal. The at least one electrical signal may be monitored against a first set of logic conditions. When an ultrasonic impedance of the surgical instrument exceeds a threshold impedance, a resonant frequency of the at least one electrical signal may be stored as a baseline frequency. A first response of the generator may be triggered upon the occurrence of either the first set of logic conditions being met or the resonant frequency of the at least one electrical signal differing from the baseline frequency by a baseline deviation threshold. 1. A method of driving an end effector coupled to an ultrasonic drive system of a surgical instrument , the method comprising:generating by a generator at least one electrical signal;monitoring the at least one electrical signal against a first set of logic conditions;storing a resonant frequency of the at least one electrical signal as a baseline frequency; andtriggering a first response of the generator upon the occurrence of at least one event selected from the group consisting of: the first set of logic conditions being met and the resonant frequency of the at least one electrical signal differing from the baseline frequency by a baseline deviation threshold.2. The method of claim 1 , wherein jaw closure is detected when an ultrasonic impedance of the surgical instrument exceeds a threshold impedance.3. The method of claim 1 , wherein the first response comprises triggering at least one response selected from the group consisting of an audible response claim 1 , a visual response and a pulsing response.4. The method of claim 1 , wherein the first response comprises a pulsing response claim 1 , and wherein triggering the pulsing response comprises:generating by the generator a first pulse amplitude for a first pulse time, where the first ...

SYSTEMS AND METHODS FOR SELECTING, ACTIVATING, OR SELECTING AND ACTIVATING TRANSDUCERS

Transducer-based systems can be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of a between graphical element can cause activation of the set of transducers associated with the selected between graphical element. Selection of a plurality of between graphical elements and graphical elements can cause visual display of a corresponding activation path in the graphical representation. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. 1. A transducer-activation system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:display instructions configured to cause the input-output device system to display a graphical representation of at least a portion of a transducer-based device, at least part of the transducer-based device positionable within a bodily cavity, and the graphical representation comprising a first transducer graphical element, a second transducer graphical element, and a between graphical element, the first transducer graphical element associated with a first transducer of the transducer-based device, the second transducer graphical element associated with a second transducer of the ...

SYSTEMS AND METHODS FOR SELECTING, ACTIVATING, OR SELECTING AND ACTIVATING TRANSDUCERS

Transducer-based systems can be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Selection of a plurality of graphical elements and/or between graphical elements can cause visual display of a corresponding activation path in the graphical representation. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. 1. A transducer-activation system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:graphical interface instructions configured to cause the input-output device system to display a graphical interface including a graphical representation of at least some of a plurality of graphical elements, each of the plurality of graphical elements respectively associated with a respective one of a plurality of transducer sets, each respective transducer set including at least one of a plurality of transducers included as part of a transducer-based device, and each respective transducer set having at least one different transducer than another of the other transducer ...

SYSTEMS AND METHODS FOR ACTIVATING TRANSDUCERS

Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. 1. A transducer-activation system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:reception instructions configured to cause reception from the input-output device system of a first sequence of transducer sets selected from a plurality of transducers of a catheter device, the plurality of transducers arranged in a distribution, the plurality of transducers positionable in a bodily cavity, the transducer sets in the first sequence forming a group of transducer sets, each of the transducer sets in the group comprising at least one of the plurality of transducers;generation instructions configured to, in response to receiving at least ...

METHODS AND DEVICES FOR ACCESS ACROSS ADJACENT TISSUE LAYERS

Adjacent tissue layers can be accessed using a catheter device with a distal tip having a conductive portion including a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip. Electrical energy can be supplied to the conductive portion of the device to cut tissue. A stent can be delivered to form a fluid communication between the adjacent tissue layers. 1. A method for advancing a catheter distally through opposed first and second luminal walls of first and second body lumens , the method comprising:positioning a catheter with a distal tip proximal to the first luminal wall, the catheter including a stent;providing an electrical current to a conductive portion of the distal tip;advancing distally the distal tip of the catheter through the first and second luminal walls to create a passage therethrough, wherein the conductive portion of the distal tip includes a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip;deploying a distal flange of the stent in the second body lumen; anddrawing proximally on the distal flange to pull the first and second luminal walls towards each other.2. The method of claim 1 , further comprising forming a hole in the first and second body lumens using a needle prior to positioning the catheter.3. The method of claim 1 , wherein the first cutting feature and one or more projections comprises an arced configuration.4. The method of claim 1 , wherein a guidewire is not used for positioning the catheter and the distal tip does not have a guidewire lumen.5. The method of claim 1 , wherein the first cutting feature comprises a concentric ring that is concentric to a lumen in the distal tip of the catheter.6. The method of claim 5 , wherein the catheter is disposed about a guidewire and positioning includes advancing the catheter along the guidewire claim 5 , wherein the concentric ...

Systems and methods for detecting channel faults in energy delivery systems

A method of detecting a thermocouple short circuit in a medical device, including obtaining a first temperature measurement from a thermocouple of the medical device; obtaining a second temperature measurement from the thermocouple; calculating a rate of change over time between the first and second temperature measurements; comparing the calculated rate of change over time to a predefined rate of change over time threshold; and generating an indication of a thermocouple short circuit based at least in part on the comparison.

SEMICONDUCTOR DEVICE INCLUDING POWER-ON RESET CIRCUIT

A semiconductor device including a power-on-reset (POR) circuit. The semiconductor device includes a driving voltage generator configured to generate a first voltage that rises at a first slope and subsequently rises at a second slope greater than the first slope and a first POR signal generator configured to receive the first voltage and generate a first POR signal having a first ramp-up time. 1. A semiconductor device comprising:a first device configured to generate a first reset signal when a first signal is applied thereto, the first signal having a first ramp-up time and being one of a plurality of signals having different ramp-up times;a second device configured to generate a second reset signal when a second signal is applied thereto, the second signal having a second ramp-up time and being one of the plurality of signals; anda storage unit configured to receive at least one of the first reset signal and the second reset signal.2. The semiconductor device of claim 1 , wherein the second ramp-up time is longer than the first ramp-up time.3. The semiconductor device of claim 1 , further comprising:a driving voltage generator configured to generate a first voltage that rises at a first slope and subsequently rises at a second slope greater than the first slope; anda first signal generator configured to receive the first voltage and generate the first signal.4. The semiconductor device of claim 3 , wherein the first signal generator is further configured to turn off the first signal while the first voltage rises at the second slope.5. The semiconductor device of claim 3 , wherein the first signal generator includes an asymmetric inverter configured to receive the first voltage claim 3 , invert the first voltage claim 3 , and generate the first signal that sharply decreases with a rise of the first voltage.6. The semiconductor device of claim 1 , further comprising:a voltage divider connected between a first power supply source and a second power supply source and ...

ELECTROSURGICAL GRIPPING ELEMENT

The invention relates to an electrosurgical gripping instrument comprising a handle part as well a lower jaw part and an upper jaw part which can perform a forcipate movement. The gripping instrument has a first pair of coagulation sections with a first lower coagulation section on the lower jaw part and a first upper coagulation section on the upper jaw part and, further, a second pair of coagulation sections with a second lower coagulation section on the lower jaw part and a second upper coagulation section on the upper jaw part. Moreover, the electrosurgical gripping instrument has a bipolar pair of cutting electrodes between the first pair of coagulation sections and the second pair of coagulation sections. 1. Electrosurgical gripping comprising a handle part as well as a lower jaw part and an upper jaw part which can perform a forcipate movement ,wherein a first pair of coagulation sections comprising a first lower coagulation section on the lower jaw part and a first upper coagulation section on the upper jaw part is provided,wherein further a second pair of coagulation sections comprising a second lower coagulation section on the lower jaw part and a second upper coagulation section on the upper jaw part is provided,whereinat least one bipolar pair of cutting electrodes between the first pair of coagulation sections and the second pair of coagulation sections.2. Electrosurgical gripping instrument according to claim 1 ,which is designed for cutting tissue along a cutting line,and which has exactly one pair of cutting electrodes with exactly two electrodes, namely a first cutting electrode and a second cutting electrode.3. Electrosurgical gripping instrument according to claim 2 ,wherein the first cutting electrode and the second cutting electrode are arranged on both sides of an insulator and respectively have one cutting edge extending along the cutting line.4. Electrosurgical gripping instrument according to claim 3 ,wherein the two cutting edges extend ...

METHOD FOR TREATING COMPLEX RHYTHM DISORDERS

A method of treating a complex rhythm disorder of a human heart includes identifying a region of a wall of the heart having an activation trail that is rotational or radially emanating, where the activation trail is indicative of the complex rhythm disorder and is based on activation times associated with one or more activations of the heart. A portion of the region is selected based on the activation trail and modified to affect the activation trail. 1. A method of treating a complex rhythm disorder of a heart in a human , the method comprising:identifying a region of a wall of the heart having an activation trail that is rotational or radially emanating, the activation trail indicative of the complex rhythm disorder and based on activation times associated with one or more activations of the heart;selecting a portion of the region based at least on the activation trail; andmodifying the portion of the region to affect the activation trail.2. The method of claim 1 , wherein the complex rhythm disorder comprises one of atrial fibrillation claim 1 , ventricular fibrillation claim 1 , atrial tachycardia and ventricular tachycardia.3. The method of claim 1 , wherein the complex rhythm disorder is atrial fibrillation and the activation trail is indicative of the atrial fibrillation.4. The method of claim 1 , wherein the activation trail comprises a rotor.5. The method of claim 1 , wherein identifying the region of the heart comprises:accessing activation signals of sensors disposed spatially in relation to the heart; andarranging the activation times of the activation signals to identify the activation trail of the region.6. The method of claim 5 , wherein the activation times are arranged in a sequence based on one or more of timing of the activation times claim 5 , timing related to shapes of the activation signals claim 5 , spatial relationship of sensors related to the activation signals claim 5 , and phase of the activation signals.7. The method of claim 5 , ...

Surgical Instrument Including Inductively Coupled Accessory

A surgical instrument system includes a surgical instrument, a power supply, and an accessory. The surgical instrument has a first induction device positioned therein. The accessory is selectively operably couplable to the surgical instrument. The accessory includes a second induction device that is inductively coupled with the first induction device when the accessory is operably coupled to the surgical instrument such that the power supply provides power to the accessory. 119-. (canceled)20. A surgical instrument , comprising:a shaft supporting a first induction device;an accessory having a housing that defines a channel dimensioned to accommodate at least a portion of the shaft and removably couple the accessory to the shaft, the accessory including a second induction device, the second induction device inductively coupling to the first induction device as the accessory is coupled the shaft to power the accessory.21. The surgical instrument according to claim 20 , wherein the first induction device includes an electrical conduit that is electrically coupled to a power supply and the second induction device includes an electrical conduit that is inductively coupled to the electrical conduit of the first induction device.22. The surgical instrument according to claim 21 , wherein at least one of the electrical conduits includes at least one wire that is at least partially wound a predetermined number of windings about a respective one of the first and second induction devices.23. The surgical instrument according to claim 22 , wherein at least one of the first and second induction devices includes a spool about which at least a portion of the at least one wire is wound.24. The surgical instrument according to claim 22 , wherein at least one of the first and second induction devices includes a pole member about which at least a portion of the at least one wire is wound.25. The surgical instrument according to claim 22 , wherein the at least one wire produces an ...

MATRIX ROUTER FOR SURGICAL ABLATION

A matrix router with frequency switching is provided having an energy source electrically connected to a plurality of interface ports. A switching device is provided between the energy source and the plurality of switches. One of the plurality of interface ports includes a paired electrode interface port for the connection of a paired electrode device thereto. The paired electrode device has a first pair of opposed electrodes and a second pair of opposed electrodes for clamping on tissue. When the paired electrode device is operably connected to the paired electrode interface port and actuated, the switching device alternates energy such as bipolar RF from the first pair of opposed electrodes to the second pair of opposed electrodes. 150.-. (canceled)51. A surgical router comprising:a) an energy source operable to power a surgical device;b) a surgical device port operably connected to the energy source, the surgical device port including an interface for connecting to the surgical device; andc) a switching device operably connected between the energy source and the surgical device port, wherein when the surgical device is operably connected to the surgical device port, the switching device is configured to alternate energy at a switching frequency.52. The surgical router of claim 51 , wherein the switching frequency of the switching device is selected with a frequency selector.53. The surgical router of claim 52 , wherein the frequency selector comprises a switch.54. The surgical router of claim 52 , wherein the frequency selector comprises a jumper.55. The surgical router of claim 52 , wherein the frequency selector is part of the surgical device.56. The surgical router of claim 52 , wherein the frequency selector comprises a circuit that recognizes any one of a plurality of surgical devices and can select a frequency for any one of the plurality of surgical devices devices.57. The surgical router of claim 52 , wherein the frequency selector selects a switching ...

TREATMENT DEVICE

A treatment device treats a biotissue by heating the biotissue to a target temperature. The device includes a heat-transfer member conveying heat to the biotissue, a heat-generating chip including a heat-generating member, a first temperature-measuring module, a temperature-measuring element disposed on the heat-transfer member, a second temperature-measuring module, and a controller. The heat-generating member heats the heat-transfer member. The first temperature-measuring module obtains a first temperature of the heat-generating member. The second temperature-measuring module obtains a second temperature measured by the temperature-measuring element. The controller determines the supplied electric power based on the first temperature after start of heating and before a transition point in time, and based on the second temperature after the transition point in time. 1. A treatment device configured to treat a biotissue by heating the biotissue to a target temperature , the device comprising:a heat-transfer member configured to contact the biotissue at a first principal surface of the heat-transfer member, and convey heat to the biotissue, the first principal surface and a second principal surface serving as front and rear surfaces;a heat-generating chip being connected with the second principal surface at a third principal surface of the heat-generating chip, and configured to heat the heat-transfer member by a supplied electric power supplied to a heat-generating member formed on a fourth principal surface of the heat-generating chip, the third principal surface and the fourth principal surface serving as front and rear surfaces;a first temperature-measuring module configured to obtain a temperature of the heat-generating member as a first temperature;a temperature-measuring element disposed in a region of the heat-transfer member with which the heat-generating chip is not connected;a second temperature-measuring module configured to obtain a temperature measured ...

SEMICONDUCTOR DEVICE

To provide a semiconductor device provided with a power-on reset circuit that can reliably detect decrease in power-supply voltage. The power-on reset circuit provided on the semiconductor device includes: a first comparison circuit that compares a primary voltage with a reference value; and a second comparison circuit that compares a secondary voltage with the reference value. The power-on reset circuit issues a reset signal based on comparison results of the first and second comparison circuits. 1. A semiconductor device comprising:a power supply circuit that generates an internal power supply voltage based on an external power supply voltage;a reference voltage generation circuit that generates a reference voltage based on the external power supply voltage;an internal circuit that operates by the internal power supply voltage; anda power-on reset circuit that outputs a reset signal to the internal circuit,wherein the power-on reset circuit includes:a first comparison circuit that generates a first comparison signal;a second comparison circuit that generates a second comparison signal; andan output circuit that receives the first and second comparison signals as input signals, and generates the reset signal,wherein the first comparison circuit inactivates the first comparison signal when the external power supply voltage or a voltage proportional thereto exceeds the reference voltage,the second comparison circuit inactivates the second comparison signal when the internal power supply voltage or a voltage proportional thereto exceeds the reference voltage,the output circuit activates the reset signal when at least one of the input signals is activated.2. The semiconductor device according to claim 1 ,wherein the power-on reset circuit further includes a third comparison circuit that generates a third comparison signal,wherein the output circuit further receives the third comparison signal as an input signal, an enhancement type PMOS transistor that is connected ...

ELECTROSURGICAL POWER CONTROL

A method and apparatus include determining a value of a parameter associated with operation of an electrosurgical probe having a particular probe design, and determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner. Power is delivered to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values The algorithm delivers power in a pulsed profile including portions of low power and portions of high power. In one embodiment, the tissue treatment is ablation, the parameter is impedance, and the method limits tissue necrosis to less than 200 microns. In another embodiment, the tissue treatment is shrinkage, the parameter is temperature, and the method limits power delivery when the probe is not shrinking tissue. 1. A method comprising:determining whether a probe is delivering power in an ablative mode or a non-ablative mode;delivering power according to a first algorithm when in the ablative mode;delivering power according to a second algorithm different from the first algorithm when in the non-ablative mode, the second algorithm comprising a pulsed profile including portions of low power and portions of high power, for initiating the ablative mode.2. The method of further comprising limiting the portions of low power to a duration that causes substantially no noticeable delay in initiating ablation.3. The method of wherein the duration of the portions of low power is between approximately 50 milliseconds and approximately 500 milliseconds.4. The method of wherein the portions of low power comprise power between approximately 0 watts and approximately 50 watts.5. The method of wherein the portions of high power have a duration substantially equal to a minimum length sufficient to initiate ablation.6. The method of wherein the portions of high power comprise power ...

ISOLATED DATA TRANSFER USING ELECTRIC-FIELD CAPACITIVE COUPLER

An electric-field capacitive coupler module includes a first processing unit, a first communication interface coupled to the first processing unit, a second communication interface, and an electric-field capacitive coupler that defines an isolation barrier. The electric-field capacitive coupler apparatus is coupled between the first communication interface and the second communication interface. 1. A electric-field capacitive coupler module , comprising:a first processing unit;a first communication interface coupled to the first processing unit;a second communication interface; andan electric-field capacitive coupler apparatus that defines an isolation barrier coupled between the first communication interface and the second communication interface.2. The electric-field capacitive coupler module according to claim 1 , further comprising an analog-to-digital converter coupled to the first processing unit.3. The electric-field capacitive coupler module according to claim 2 , wherein the analog-to-digital converter is configured to receive an analog electrical signal from a handpiece and generate a digital output signal to be provided to the first processing unit.4. The electric-field capacitive coupler module according to claim 1 , wherein the second communication interface is coupled to a second processing unit.5. The electric-field capacitive coupler module according to claim 4 , wherein the second processing unit is operably associated with a generator assembly.6. The electric-field capacitive coupler module according to claim 5 , wherein the second processing unit is disposed within the generator assembly.7. The electric-field capacitive coupler module according to claim 1 , wherein the electric-field capacitive coupler apparatus is embedded in a multi-layer printed circuit board (PCB).8. The electric-field capacitive coupler module according to claim 7 , wherein the electric-field capacitive coupler apparatus includes a first portion electrically-coupled to a ...

ELECTRO-THERMAL DEVICE

An electro-thermal apparatus configured to treat tissue is provided. The electro-thermal apparatus including an electrosurgical cable configured to couple to an electrosurgical energy source. The electrosurgical cable includes supply and return lines that are wound in a double helix arrangement around a dielectric insulator within the electrosurgical cable. An electro-thermal element is provided at a distal end of the electrosurgical cable. The electro-thermal element is in electrical communication with the supply and return lines via corresponding first and second conductive traces. The first and second conductive traces have a patterned geometry and resistivity configured to convert electrical energy provided by the supply and return lines to thermal energy for treating tissue. 1. An electro-thermal apparatus configured to treat tissue , comprising:an electrosurgical cable configured to couple to an electrosurgical energy source, the electrosurgical cable including supply and return lines that are wound in a double helix arrangement around a dielectric insulator within the electrosurgical cable; andan electro-thermal element provided at a distal end of the electrosurgical cable, the electro-thermal element in electrical communication with the supply and return lines via corresponding first and second conductive traces having a patterned geometry and resistivity configured to convert electrical energy provided by the supply and return lines to thermal energy for treating tissue.2. The electro-thermal apparatus according to claim 1 , wherein the supply and return lines are covered by an insulative material and the first and second conductive traces extend along an exterior surface of the end cap.3. The electro-thermal apparatus according to claim 1 , wherein the first and second conductive traces include a patterned geometry that substantially matches the double helix arrangement of the supply and return lines around the dielectric insulator.4. The electro-thermal ...

ENERGY-BASED MEDICAL DEVICES

A medical device includes an energy-generating unit configured to produce energy for conduction through tissue to treat tissue. Waste heat produced by the energy-generating unit during energy production is conducted to tissue to facilitate treating tissue. 1. A medical device , comprising:an energy-generating unit configured to produce energy for conduction through tissue to treat tissue, wherein waste heat produced by the energy-generating unit during energy production is conducted to tissue to facilitate treating tissue.2. The medical device according to claim 1 , further comprising a conductive tissue treating surface configured to connect to the energy-generating unit for conducting energy though tissue to treat tissue.3. The medical device according to claim 2 , wherein the tissue treating surface is thermally coupled to the energy-generating unit such that the waste heat produced by the energy-generating unit is conducted to the tissue treating surface to facilitate treating tissue.4. The medical device according to claim 1 , wherein the energy-generating unit includes at least one integrated circuit.5. The medical device according to claim 4 , wherein the at least one integrated circuit is one of a plurality of integrated circuits formed as a multi-chip-module on a substrate.6. The medical device according to claim 4 , wherein the at least one integrated circuit is disposed on a printed circuit board substrate.7. The medical device according to claim 1 , further comprising a control unit configured to control the energy-generating unit.8. The medical device according to claim 7 , wherein waste heat produced by the control unit in controlling the energy-generating unit is conducted to tissue to facilitate treating tissue.9. The medical device according to claim 1 , further comprising a power source operably coupled to the energy-generating unit.10. The medical device according to claim 9 , wherein waste heat produced by the power source is conducted to tissue ...

RENAL NERVE MODULATION DEVICES AND METHODS

Systems for nerve and tissue modulation are disclosed. An example system may include an intravascular nerve modulation system including an elongated shaft having a proximal end region and a distal end region. The system may further include one or more ablation electrodes affixed to the distal end region of the elongated shaft. One or more ground pad electrodes may be provided and connected to a processor configured to modulate the impedance of each circuit completed between the ablation electrodes and the ground pads. 1. A method for performing intravascular renal nerve modulation , the method comprising: an elongate shaft having a proximal end region and a distal end region;', 'one or more ablation electrodes positioned adjacent the distal end region of the elongate shaft;', 'two or more ground electrodes;', 'a control unit electrically coupled to the one or more ablation electrodes; and', 'a processor electrically coupled to the two or more ground electrodes;, 'providing a nerve modulation system comprisingadvancing the nerve modulation system through a lumen such that the distal end region is adjacent to a target region;applying a voltage to the one or more ablation electrodes, wherein energy flows between the one or more ablation electrodes and the two or more ground electrodes to form individual circuits; andadjusting the resistance of at least one of the circuits formed between the two or more ground electrodes and the one or more ablation electrodes.2. The method of claim 1 , wherein the ground electrodes are positioned adjacent the distal end region of the elongate shaft.3. The method of claim 1 , wherein the ground electrodes are ground pads configured to be placed on a surface of a body.4. The method of claim 1 , further comprising monitoring the impedance of each circuit completed by the two or more ground electrodes.5. The method of claim 4 , wherein the impedance of each circuit is variable.6. The method of claim 1 , wherein adjusting the resistance of ...

SYSTEM AND APPARATUS FOR AUTOMATIC ACTIVATION USING RADIO FREQUENCY SENSOR

A system and apparatus for automatic smoke evacuation using an RF sensor. The system and apparatus utilizes an RF sensor for automatic activation of an evacuator that evacuates smoke and/or debris during the use of any electrosurgical instrument or surgical instrument that is capable of generating smoke and/or debris and capable of producing a radiofrequency during its operation. Exemplary embodiments of the system and apparatus for automatic smoke evacuation include both wired and wireless embodiments. 1. A system for automatic smoke evacuation comprising:a surgical instrument capable of producing a radiofrequency during its operation;a smoke evacuation unit capable of evacuating at least one of smoke and debris through a smoke evacuation channel; anda radiofrequency sensor connected to the smoke evacuation unit that is capable of sending a signal to the smoke evacuation unit where said radiofrequency sensor has at least two transistors in sequence.2. The automatic smoke evacuation system of wherein the radiofrequency sensor includes an octocoupler in sequence with at least one of said at least two transistors.3. The automatic smoke evacuation system of wherein the radiofrequency sensor includes a relay that is activated by the octocoupler and a switch that is operated by the relay where the switch is capable of sending a signal to the smoke evacuation unit.4. The automatic smoke evacuation unit of wherein said at least two transistors are separated by at least one resistor.5. The automatic smoke evacuation unit of wherein the surgical instrument capable of producing a radiofrequency during its operation comprises at least one of an electrosurgery pencil claim 1 , an electrosurgery blade claim 1 , a harmonic scalpel claim 1 , a tissue sealer claim 1 , an electrosurgical forceps claim 1 , an electrosurgical tip claim 1 , and an ultrasonic device.6. A system for automatic smoke evacuation comprising:a surgical instrument capable of producing a radiofrequency during ...

Optimizing Treatment Using TTFields by Changing the Frequency During the Course of Long Term Tumor Treatment

Tumors can be treated with an alternating electric field. The size of cells in the tumor is determined prior to the start of treatment by, for example, biopsy or by inverse electric impedance tomography. A treatment frequency is chosen based on the determined cell size. The cell size can be determined during the course of treatment and the treatment frequency is adjusted to reflect changes in the cell size. A suitable apparatus for this purpose includes a device for measuring the tumor impedance, an AC signal generator with a controllable output frequency, a processor for estimating the size of tumor cells and setting the frequency of the AC signal generator based thereon, and at least one pair of electrodes operatively connected to the AC signal generator such that an alternating electric field is applied to the tumor. 1. An apparatus for adaptively treating a tumor with an alternating electric field , the apparatus comprising:an AC signal generator having an output;at least one pair of electrodes operatively connected to the output of the AC signal generator such that an alternating electric field is applied to the tumor to selectively destroy cells in the tumor, wherein the AC signal generator is configured to apply a first alternating electrical signal to the output for a first period of time;an electrical impedance tomography device for measuring an impedance of the tumor to account for expected changes that occur as a result of treating the tumor for the first period of time; anda processor configured to adjust a parameter of treatment based on the measured impedance of the tumor after the first period of time, and further configured to account for changes in the tumor that have occurred during the first period of time by controlling the AC signal generator so that the AC signal generator applies a second alternating electrical signal to the output for a second period of time using the adjusted parameter of treatment,wherein the second period of time is ...

CORDLESS SURGICAL DEVICE AND CONTROL METHOD

A cordless surgical device includes a battery and a memory that stores data in which, with each of a plurality of energy output modes in which living tissue is treated by applying energy to the living tissue, a minimum power necessary to execute the energy output mode is associated, and a processor. The processor monitors a remaining power in the battery, selects an energy output mode in which the minimum power is less than the remaining power in the battery from among the energy output modes, and executes the selected energy output mode. The energy output modes include a normal output mode and an urgent output mode between which types of energy applied to the living tissue are the same. The minimum power corresponding to the normal output mode is higher than the minimum power corresponding to the urgent output mode. 1. A cordless surgical device comprising:a battery;a memory configured to store data including a value of a minimum power necessary to execute each of a plurality of energy output modes in which living tissue is treated by respectively applying a different type of energy to the living tissue; and monitor a remaining power in the battery;', 'select one energy output mode of the plurality of energy output modes based on the stored values of minimum power in which the minimum power is smaller than the remaining power in the battery;', 'execute the selected energy output mode of the plurality of energy output modes, each energy output mode includes a normal output mode and an urgent output mode that each apply the same type of energy to the living tissue, the minimum power corresponding to the normal output mode being higher than the minimum power corresponding to the urgent output mode;', 'determine, based on the stored data, whether the remaining power in the battery is less than the minimum power corresponding to the normal output mode when the normal output mode is executed;', 'preferentially select, as the energy output mode in which the minimum power ...

GENERATOR FOR THE DELIVERY OF HIGH FREQUENCY ALTERNATING CURRENT TO A MEDICAL INSTRUMENT

A generator for the delivery of high frequency alternating current to a medical instrument has a power supply unit, a high frequency generator primary unit (HF generator primary unit), an application unit, and a control unit. The HF generator primary unit is connected to the power supply unit and the application unit and designed to supply the application unit with high frequency alternating current during operation. The application unit is electrically connected in a switchable manner to connections for connecting a medical instrument via at least one relay. The control unit is galvanically separated from the application unit and designed to control the at least one relay and the application unit as applicable. The control unit is connected to the application unit via an intermediate control circuit, wherein the intermediate control circuit is galvanically separated both from the control unit and from the application unit. 1. A generator for the delivery of high frequency alternating current to a medical instrument , the generator having a power supply unit , an HF generator primary unit , an application unit and a control unit , wherein the HF generator primary unit is connected to the power supply unit and the application unit and designed to supply the application unit with high frequency alternating current during operation , wherein the application unit via at least one relay is electrically connected in a switchable manner to terminals for connecting a medical instrument , and wherein the control unit is galvanically separated from the application unit and designed to control the at least one relay and the application unit as applicable , wherein the control unit is connected to the application unit via an intermediate control circuit circuit , wherein the intermediate control circuit is galvanically separated both from the control unit and from the application unit.2. A generator pursuant to claim 1 , wherein the intermediate control circuit is designed to ...

ELECTROSURGICAL GENERATOR AND SYSTEM

An electrosurgical generator includes an electrosurgical energy output configured to deliver electrosurgical energy to a bipolar end effector assembly in a conductive fluid environment for treating tissue. A controller having a processor is configured to control a waveform of the electrosurgical energy such that the waveform oscillates between a cut phase for initiating and sustaining tissue cutting, wherein the waveform includes a cut energy greater than the energy needed to create and sustain arcing, and a hemostasis phase, for desiccating/coagulating tissue, wherein the waveform includes a hemostasis energy less than the energy needed to sustain arcing. 120-. (canceled)21. An electrosurgical generator , comprising:an electrosurgical energy output configured to deliver electrosurgical energy to a bipolar end effector assembly; anda controller having a hardware processor configured to control a waveform of the electrosurgical energy delivered from the output to the bipolar end effector assembly such that the waveform oscillates between a first mode and a second mode, wherein the first mode is continued for a first time interval and the second mode is continued for a second time interval, and wherein the processor is configured to determine at least one of the first time interval or the second time interval in accordance with a movement distance of a portion of the bipolar end effector assembly during the at least one of the first mode or the second mode, respectively.22. The electrosurgical generator according to claim 21 , wherein the processor is configured to determine at least one of the first time interval or the second time interval in accordance with the movement distance of at least one of a first electrode or a second electrode of the bipolar end effector assembly during at least one of the first mode or the second mode.23. The electrosurgical generator according to claim 21 , wherein the first mode corresponds to a cut mode configured to facilitate ...

MONOPOLAR AND BIPOLAR ELECTROSURGICAL INSTRUMENTS

An electrosurgical pencil with integrated tweezers includes-an elongated housing having an open distal end and an actuator operatively associated therewith. First and second jaw members extend distally through the open distal end of the elongated housing and are transitionable between a closed position and an open position upon actuation of an actuator. One or both of the jaw members is configured to treat tissue with monopolar energy and both jaw members are configured to treat tissue with bipolar energy. One or more switches is operably coupled to a controller disposed in the housing and configured to activate the first and second jaw members to treat tissue with monopolar and bipolar energy. 120-. (canceled)21. An end effector assembly of a surgical instrument , comprising:a monopolar assembly configured to apply monopolar energy to tissue; andfirst and second jaw members configured to conduct bipolar energy through tissue grasped therebetween, the first and second jaw members movable from an open position to a closed position to grasp tissue therebetween, the first and second jaw members further movable to an isolated position wherein the first jaw member is at least partially received within a cavity defined within the second jaw member to isolate the first jaw member from the monopolar element.22. The end effector assembly according to claim 21 , wherein the second jaw member is part of the monopolar assembly claim 21 , the second jaw member configured to deliver monopolar energy to tissue.23. The end effector assembly according to claim 21 , wherein the monopolar assembly includes an electrode operably coupled to the second jaw member.24. The end effector assembly according to claim 21 , wherein the monopolar assembly includes an electrode extending distally from the second jaw member.25. The end effector assembly according to claim 21 , wherein both of the first and second jaw members are movable between the open position claim 21 , the closed position claim ...

ELECTROSURGICAL SYSTEM FOR USE WITH NON-STICK COATED ELECTRODES

An electrosurgical system includes an electrosurgical instrument having an electrode with a polymeric dielectric coating; and an electrosurgical generator, which includes a power converter configured to generate RF energy; a sensor coupled to the power converter and configured to sense a parameter of the RF energy; and a controller coupled to the sensor and the power converter. The controller is configured to control the power converter to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating. The controller is further configured to determine whether the conductor breakthrough occurred based on the parameter; and execute a treatment algorithm based on a determination of the conductor breakthrough. 1. An electrosurgical system comprising:an electrosurgical instrument including an electrode having a polymeric dielectric coating; and a power converter configured to generate RF energy;', 'a sensor coupled to the power converter and configured to sense at least one parameter of the RF energy; and', control the power converter to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating;', 'determine whether the conductor breakthrough occurred based on the at least one parameter; and', 'execute a treatment algorithm based on a determination of the conductor breakthrough., 'a controller coupled to the sensor and the power converter, the controller configured to], 'an electrosurgical generator including2. The electrosurgical system according to claim 1 , wherein the controller is further configured to compare the at least one parameter to a set threshold indicative of the conductor breakthrough.3. The electrosurgical system according to claim 2 , wherein the controller is further configured to control the power converter to output the RF waveform for a set period of time.4. The electrosurgical system according to claim 3 , wherein the controller is further configured to execute the treatment ...

ARTHROSCOPIC DEVICES AND METHODS

A probe for treating shoulders and other joints has a working end which includes a first element for cutting soft tissue, a second element for applying RF energy to tissue, and a third element for cutting or burring bone. The probe is introduced to a working space in a patient's joint, such as the patient's subacromial space, typically under endoscopic viewing. Soft tissue is cut with the first element. Radiofrequency energy is applied with the second element to ablate or cauterize tissue, while bone maybe burred with the third element. Successive treatments steps are performed by reorienting the treatment device in situ with removal or withdrawal of the working end. 1. A method of shoulder arthroscopy comprising:forming a first portal in a patient's shoulder to access the patient's subacromial space;introducing an endoscope through the first portal to visualize the subacromial space;forming a second portal in the patient's shoulder to access the subacromial space;introducing a working end of a probe through the second portal into the subacromial space, wherein the working end includes a first element for cutting soft tissue, a second element for applying RF energy to tissue, and a third element for bone cutting or burring;cutting soft tissue with the first element to access targeted bone;applying radiofrequency (RF) energy to ablate bone surface tissue with the second element; andburring the targeted bone with the third element to thereby treat the subacromial space.2. The method of shoulder arthroscopy of claim 1 , wherein at least two of the cutting claim 1 , the applying RF energy claim 1 , and the burring steps are performed successively without removing the working end of the probe from the second portal.3. The method of shoulder arthroscopy of claim 1 , wherein all three of the cutting claim 1 , the applying RF energy claim 1 , and the burring steps are performed successively without removing the working end of the probe from the second portal.4. The method ...

SURGICAL DEVICE MULTI-SOCKET, ELECTRO-SURGICAL HIGH-FREQUENCY GENERATOR, ELECTRO-SURGICAL DEVICE PLUG AND ELECTRO-SURGICAL SYSTEM

A surgical device multi-socket for a high-frequency generator for connecting an electro-surgical instrument, an electro-surgical high-frequency generator, an electro-surgical device plug and an electro-surgical system. The invention also relates to a cable for an electro-surgical instrument and an electrosurgical instrument. In particular, the invention relates to a surgical device multi-socket for a high-frequency generator for connecting an electro-surgical instrument, in particular a bipolar applicator, including a coaxial socket which is designed to accommodate the coaxial plug element, and a first contact opening which is designed to accommodate a contact pin, and/or a second contact opening which is designed to accommodate a contact pin. 1. A surgical device multi-socket for a high-frequency generator for connecting an electro-surgical instrument , comprisinga coaxial socket which is designed to accommodate a coaxial plug element, anda first contact opening which is designed to accommodate a contact pin, and/or asecond contact opening which is designed to accommodate a contact pin.2. A surgical device multi-socket pursuant to claim 1 , comprising a positioning opening which is designed to accommodate a positioning pin.3. A surgical device multi-socket pursuant to claim 1 , wherein the coaxial socket claim 1 , the first contact opening and the second contact opening are arranged in such a way that a straight line connects the centers of the coaxial socket claim 1 , the first contact opening and the second contact opening.4. A surgical device multi-socket pursuant to claim 2 , whereina center of the positioning opening is arranged at a distance from a straight line connectingthe centers of the coaxial socket, the first contact opening and the second contact opening and/or thatthe positioning opening is arranged off-center between the first or second contact opening and the coaxial socket.5. A surgical device multi-socket pursuant to claim 1 , wherein the first ...

ELECTROSURGICAL TOOL INCLUDING A NON-LINEAR RESISTANCE MATERIAL

Methods, devices, and systems related to electrosurgical tools are provided. The electrosurgical tools can include an electrode formed of non-linear resistance material for allowing energy to be transmitted to the electrode for heating the electrode or to tissue adjacent the electrode for heating the tissue. Such transmission of the energy can depend upon a characteristic of the electrical energy, such as voltage or frequency of the energy, which can affect the resistance properties of the electrode. 2. The surgical device of claim 1 , in the electrical energy is radio-frequency energy.3. The surgical device of claim 1 , wherein a resistance of the at least one electrode is dependent on at least one of the voltage claim 1 , a frequency claim 1 , and a temperature.4. The surgical device of claim 1 , wherein a resistance of the at least one electrode is greater when the delivered voltage is above the predetermined threshold than when the delivered voltage is below the predetermined threshold.5. The surgical device of claim 1 , wherein the non-linear resistance material includes at least one of a silicone carbide claim 1 , tin oxide claim 1 , iron oxide claim 1 , titanium dioxide claim 1 , and zinc oxide.6. The surgical device of claim 1 , wherein the predetermined threshold voltage is predetermined based on the non-linear resistance material forming the at least one electrode.7. The surgical device of claim 1 , wherein when the electrical energy is delivered with the voltage below the predetermined threshold voltage the electrical energy does not substantially heat the at least one electrode claim 1 , and when the electrical energy is delivered with the voltage at or above the predetermined threshold voltage the electrical energy is not substantially transmitted through the tissue grasped by the end effector.8. A surgical device claim 1 , comprising:an elongate shaft having an end effector at a distal end thereof, the end effector having a tissue engagement surface ...

SURGICAL FORCEPS AND LATCHING SYSTEM

A surgical forceps comprising: a first working arm and a second working arm configured to move towards and away from each other; and an electromagnetic latching system; wherein the electromagnetic latching system is configured to create a force that is in a direction aligned with closing of the forceps or opposite to the closing of the forceps when an electromagnetic activation button is depressed. 1) A surgical forceps comprising:a first working arm and a second working arm configured to move in a direction that is towards and away from each other in a manner that creates a resilient moving force; andan electromagnetic latching system located in or on the first working arm, the second working arm, or both;wherein a first electromagnetic latch of the electromagnetic latching system has a constant magnetic field, and a second electromagnetic latch of the electromagnetic latching system has a variable magnetic field.2) The surgical forceps of claim 19 , wherein the force applied is based upon a measurement of impedance of tissue held between the first working arm and the second working arm.3) (canceled)4) (canceled)5) The surgical forceps of claim 1 , wherein both of the first electromagnetic latch and the second electromagnetic latch one or more electromagnetic latches are connected to power so that when power is applied each of the electromagnetic latches create a force that biases the first working arm and the second working arm towards each other; a force that biases the first working arm and the second working arm apart; or both.6) (canceled)7) The surgical forceps of claim 1 , wherein an amount of force required to move the first working arm and second working arm apart claim 1 , together claim 1 , or both is variable by a user.8) (canceled)9) The surgical forceps of claim 1 , wherein the surgical forceps are an electrosurgical device.10) The surgical forceps of claim 1 , wherein the first working arm and the second working arm include a neutral position and ...

GENSET POWER CONTROL IN POWER SYSTEMS

A method includes determining an average set load corresponding to a plurality of gensets of a power system, generating a power error based on the determined average set load and a set load of a genset of the plurality, generating a first offset based on a function of the power error and a predetermined factor, determining a secondary offset, generating a final offset based on the first offset and the secondary offset, generating a final reference value based on a nominal reference and the final offset, and applying the final reference value to obtain proportional load sharing between the plurality of gensets. 1. A method comprising:determining an average set load corresponding to a plurality of gensets of a power system;generating a power error based on the determined average set load and a set load of a genset of the plurality;generating a first offset based on a function of the power error and a predetermined factor;determining a secondary offset;generating a final offset based on the first offset and the secondary offset;generating a final reference value based on a nominal reference and the final offset; andapplying the final reference value to obtain proportional load sharing between the plurality of gensets.2. The method of claim 1 , wherein determining the secondary offset comprises selecting either a local offset of a network node corresponding to the genset or a system offset corresponding to the power system.3. The method of claim 2 , wherein the system offset is based on a negative sum of each local offset of gensets in a local offset state divided by a number of gensets in a system offset state.4. The method of claim 2 , wherein the local offset is selected when the network node is in a local offset state claim 2 , and wherein the system offset is selected when the network node is in a system offset state.5. The method of claim 4 , wherein the system offset state is selected when the local offset state is not selected.6. The method of claim 4 , wherein ...

ELECTROSURGICAL HANDHELD INSTRUMENT WITH ENHANCED FUNCTIONALITY

Electrosurgical instrument including a handpiece which has a connection side (A) and a treatment side (B), and including a connecting plug which is electrically connected to the connection side (A) of the handpiece and is electrically connectable to a high-frequency generator, wherein the electrosurgical instrument includes a control unit which is designed to actively control the voltage waveform of high-frequency energy which is output on the treatment side (B) of the handpiece.

ARTHROSCOPIC DEVICES AND METHODS

An arthroscopic or other medical device includes an elongate shaft having a proximal end and a working end. At least one electrode for treating tissue is located at the working end of the shaft, and a fluid outflow path extends proximally from the working end through a first channel portion in the shaft. A handpiece is coupled to the proximal end of the shaft and has a body with a second channel portion formed along an axis therein. The second channel is receives a heated or other outflow from a proximal end of the first channel in the shaft, and the second channel runs along an axis of the handpiece. A thin wall sleeve is located in the handpiece so that it surrounds at least a portion of the second channel. The thin wall sleeve is surrounded by an air gap or otherwise provides a thermal barrier between an exterior surface of the thin wall sleeve and an inner surface of the body of the handpiece in order to limit heat transfer from the heated or other fluid outflow through the second channel. 1. A medical device , comprising:an elongate shaft having a proximal end and a working end;at least one electrode for treating tissue located at the working end of the shaft;a fluid outflow path extending proximally from the working end through a first channel portion in the shaft;a handpiece coupled to the proximal end of the shaft, said handpiece comprising a body with a second channel portion formed along an axis therein, said second channel being configured to receive outflow from a proximal end of the first channel in the shaft, wherein the second channel runs along an axis of the handpiece; anda thin wall sleeve in the handpiece surrounding at least a portion of the second channel, wherein the thin wall is surrounded by an air gap between an exterior surface of the thin wall sleeve and an inner surface of the body for limiting heat transfer from a fluid outflow through the second channel.2. The medical device of wherein the thin wall sleeve comprises a material having a ...

HIGH-FREQUENCY GENERATOR, CONTROL UNIT, METHOD FOR OPERATING A HIGH-FREQUENCY GENERATOR

A high-frequency generator connects an electrosurgical instrument, including an electrical output connection point for an electrosurgical instrument, a power supply, which is at least indirectly connected to the output connection point, and a power controller for controlling the electrical output power output via the output connection point. The power controller is designed to begin the output of an electrical output power when an output energy balance amount is greater than an output energy limit value and to end the output of the electrical output power when the output energy balance amount falls below a minimum value. 1. A high-frequency generator for connecting an electrosurgical instrument , comprisingan electrical output connection point for an electrosurgical instrument,a power supply, which is at least indirectly connected to the output connection point,a power controller for controlling the electrical output power output via the output connection point, wherein the power controller is configuredto begin the output of an electrical output power when an output energy balance amount is greater than an output energy limit value andto end the output of the electrical output power when the output energy balance amount falls below a minimum value,the output energy balance amount being determined over a moving determination duration from a supplied specified generator power and the output electrical output power.2. The high-frequency generator according to claim 1 , wherein the specified generator power is adjustable.3. The high-frequency generator according to claim 1 , wherein the output energy balance amount does not exceed a maximum output energy balance amount.4. The high-frequency generator according to claim 1 , wherein the maximum output energy balance amount is determined from the difference between a permissible energy amount and a specified energy amount claim 1 , wherein the permissible energy amount is the maximum energy amount that may be output ...

DEVICE FOR CARRYING OUT AN ELECTROSURGICAL INTERVENTION ON A PATIENT

A surgical device having an apparatus with a generator and an instrument supplied by a generator. A sensor is part of the device that is attached to the patient, for example to an extremity thereof, during surgery to detect the movement of the patient. The sensor is connected with a control device that modifies the operation of generator and particularly switches the generator off, if the sensor detects a movement of the patient exceeding a threshold. Injuries of patient that could occur by involuntary twitches during surgery process are thus avoided. 1. A surgical device for carrying out an electrosurgical intervention on a patient , the surgical device comprising:an apparatus that comprises a generator for creation of treatment voltage and a control device for control of the generator;an instrument that comprises at least one electrode and that is connected to the generator; anda sensor that is configured for attachment on the patient and for detection of a movement of the patient and that is connected with the control device.2. The surgical device according to claim 1 , wherein the control device comprises a signal evaluation device that is configured to switch off the generator in a manner controlled by the sensor.3. The surgical device according to claim 1 , wherein the sensor is a movement sensor.4. The surgical device according to claim 1 , wherein the sensor is an acceleration sensor.5. The surgical device according to claim 1 , wherein the sensor comprises an attachment device by means of which it can be attached to an extremity of the patient claim 1 , particularly a foot or a leg.6. The surgical device according to claim 5 , wherein the attachment device is an adhesive area or an attachment band.7. The surgical device according to claim 1 , wherein the control device comprises a signal evaluation device that is configured to compare the signal provided by the sensor with a threshold and to create a switch-off signal claim 1 , if the threshold is exceeded. ...

WIRELESSLY REFERENCED MULTI-OCTAVE OSCILLATOR

A signal source with a wireless frequency reference. A signal loop includes an amplifier and a coupler. The magnitude of the loop gain in the signal loop is substantially equal to 1 at a steady-state amplitude of a signal at a fundamental frequency. A reference oscillator is coupled to the loop through the coupler, via a wireless link, and provides phase stabilization. The loop may include a nonlinear transmission line, to generate a comb output spectrum. 1. A signal source , comprising:a reference oscillator configured to generate a reference signal at a fundamental frequency at a reference oscillator output;a transmitting antenna, connected to the reference oscillator output;a signal loop comprising a first amplifier, the signal loop having a loop gain magnitude substantially equal to 1 at a steady-state amplitude of a fundamental frequency;a coupler for coupling a signal into the signal loop; anda receiving antenna connected to the coupler, and configured to receive electromagnetic radiation transmitted by the transmitting antenna;the signal source being configured to cause a circulating signal in the signal loop, at the fundamental frequency, to be phase-stabilized to the reference oscillator.2. The signal source of claim 1 , wherein the signal loop further comprises a comb generator and the signal loop is configured to generate claim 1 , at an output of the comb generator claim 1 , a plurality of tones including a tone at the fundamental frequency and a tone at a harmonic of the fundamental frequency claim 1 , the frequency of the tone at the harmonic of the fundamental frequency being at least 4 times the fundamental frequency claim 1 , and the amplitude of the tone at the harmonic of the fundamental frequency being at least 0.01 of the amplitude of the tone at the fundamental frequency.3. The signal source of claim 1 , wherein the comb generator is a nonlinear transmission line.4. The signal source of claim 2 , wherein the signal loop further comprises a band ...

BIPOLAR FORCEPS WITH VESSEL SEAL TESTING

A forceps system for sealing a blood vessel can include a first jaw and an opposing second jaw. At least one of the first and second jaws includes at least a first electrode having first and second electrode portions that are laterally separated to permit electrical isolation between the first and second electrode portions, and the first and second electrode portions are independently addressable to permit individual testing by the first and second electrodes portions of a blood vessel characteristic. This can help permit individual testing of each side of a target seal region of the blood vessel. 1. A forceps system for sealing a vessel , the forceps system comprising:a forceps including first jaw and an opposing second jaw,wherein at least one of the first and second jaws includes at least a first electrode having first and second electrode portions that are laterally separated to permit electrical isolation between the first and second electrode portions, andwherein the first and second electrode portions are independently addressable to permit individual testing by the first and second electrodes portions of a vessel characteristic.2. The forceps system of claim 1 , comprising a slot between at least a portion of the laterally separated first and second electrode portions.3. The forceps system of claim 2 , further comprising a retractable blade extendable in the slot between the first electrode portion and the second electrode portion.4. The forceps of claim 2 , wherein the first electrode portion and the second electrode portion are laterally separated by the slot.5. The forceps of claim 2 , wherein the first electrode portion and the second electrode portion each extend from between a distal portion and a proximal portion of the first jaw.6. The forceps system of claim 1 , wherein the other of the first and second jaws includes a second electrode.7. The forceps of claim 6 , wherein the first and second electrodes comprise a first plate electrode and a second ...

ELECTROSURGICAL GENERATOR AND SYSTEM

An electrosurgical system includes an RF electrosurgical generator, an electrosurgical instrument, and a pump. The radio frequency (RF) electrosurgical generator includes: an output socket for providing a RF output signal to an electrosurgical instrument according to an operating mode of the generator; and an output port arranged to output and return a loop signal for controlling a pump, wherein the generator is configured to generate the loop signal based at least in part on the operating mode of the generator. A method of controlling a pump in an electrosurgical system includes generating a loop signal at an electrosurgical generator based at least in part on an operating mode of the generator; outputting the loop signal to a loop cable; sensing, using a sensing device, the loop signal from the loop cable; and controlling the pump based on an output of the sensing device. 1. A radio frequency (RF) electrosurgical generator comprising:an output socket for providing a RF output signal to an electrosurgical instrument according to an operating mode of the generator; andan output port arranged to output and return a loop signal for controlling a pump,wherein the generator is configured to generate the loop signal based at least in part on the operating mode of the generator.2. The RF electrosurgical generator of further comprising a loop cable coupled to the output port.3. The RF electrosurgical generator of claim 1 , wherein the loop cable comprises a first end coupled to an output side of the output port claim 1 , and a second end coupled to a return side of the output port.4. The RF electrosurgical generator of claim 1 , further configured to generate the loop signal based at least in part on a power level of the RF output signal and/or the mechanical shaving signal.5. The RF electrosurgical generator of claim 1 , further configured to receive a command signal indicative of a user-requested change in the operation of the pump claim 1 , and to generate the loop ...

LOW DROPOUT LINEAR VOLTAGE REGULATOR

A low dropout linear voltage regulator is provided. In the low dropout linear voltage regulator, a power transistor has a source connected to a power source, a gate connected to an output terminal of an error amplifier, a drain connected to an output terminal of the low dropout linear voltage regulator. A dynamic Miller compensation network has a first terminal connected to the output terminal of the error amplifier, a second terminal connected to the output terminal of the low dropout linear voltage regulator. A controller has a first terminal connected to the gate of the power transistor, and a second terminal connected to a third terminal of the Miller compensation network. The controller is configured to detect a current at the output terminal of the low dropout linear voltage regulator and generate control signals according to the current to control connection and disconnection of each second resistance-capacitance branch in the dynamic Miller compensation network. 1. A low dropout linear voltage regulator , comprising: an error amplifier , a power transistor , a dynamic Miller compensation network and a controller ,wherein a source of the power transistor is connected to a power source, a gate of the power transistor is connected to an output terminal of the error amplifier, and a drain of the power transistor is connected to an output terminal of the low dropout linear voltage regulator;a first terminal of the dynamic Miller compensation network is connected to the output terminal of the error amplifier, a second terminal of the dynamic Miller compensation network is connected to the output terminal of the low dropout linear voltage regulator; a first terminal of the controller is connected to the gate of the power transistor, and a second terminal of the controller is connected to a third terminal of the dynamic Miller compensation network;the dynamic Miller compensation network comprises a first resistance-capacitance branch and at least one second ...

ELECTROSURGICAL GENERATORS

An electrosurgical generator is provided. The electrosurgical generator includes at least one converter configured to output a DC waveform and a nonlinear carrier control current. At least one boost inverter is coupled to the at least one converter and is configured to convert the DC waveform to generate at least one electrosurgical waveform. At least one inductor is connected in series with the at least one converter and at least one boost inverter and is configured to output an inductor current. A controller is coupled to the at least one converter and the at least one boost inverter and is configured to maintain the inductor current at a predetermined value by controlling a pulse duration of a duty cycle of the at least one converter based on a comparison of inductor current and the nonlinear control current. 1. An electrosurgical generator , comprising:at least one converter configured to output a DC waveform and a nonlinear carrier control current;at least one boost inverter coupled to the at least one converter, the at least one boost inverter configured to convert the DC waveform to generate at least one electrosurgical waveform;at least one inductor connected in series with the at least one converter and at least one boost inverter, the at least one inductor configured to output an inductor current; andat least one controller coupled to the at least one converter and the at least one boost inverter and configured to maintain the inductor current at a predetermined value by controlling a pulse duration of a duty cycle of the at least one converter based on a comparison of inductor current and the nonlinear control current.2. The electrosurgical generator according to claim 1 , wherein the at least one converter is a DC-DC converter selected from the group consisting of a DC-DC buck converter claim 1 , DC-DC Ćuk converter claim 1 , DC-DC buck-squared converter and DC-DC inverse-SEPIC converter claim 1 , and wherein the at least one boost inverter is a DC-AC ...

ELECTROSURGICAL GENERATOR WITH CONTINUOUSLY AND ARBITRARILY VARIABLE CREST FACTOR

An electrosurgical generator is provided. The electrosurgical generator includes: a non-resonant radio frequency output stage configured to output a substantially square electrosurgical waveform; and a controller coupled to the non-resonant radio frequency output stage, the controller configured to adjust a crest factor of the substantially square electrosurgical waveform on a cycle-by-cycle basis. 1. An electrosurgical generator , comprising:a non-resonant radio frequency output stage configured to output a substantially square electrosurgical waveform; anda controller coupled to the non-resonant radio frequency output stage, the controller configured to adjust a crest factor of the substantially square electrosurgical waveform on a cycle-by-cycle basis.2. The electrosurgical generator according to claim 1 , wherein the non-resonant radio frequency output stage further comprises:a DC-DC buck converter configured to output a DC waveform, the DC-DC buck converter including at least one first switching element operated at a first duty cycle.3. The electrosurgical generator according to claim 1 , wherein the non-resonant radio frequency output stage further comprises:a DC-AC boost converter coupled to the DC-DC buck converter and including at least one second switching element operated at a second duty cycle, the DC-AC boost converter configured to convert the DC waveform to generate the substantially square electrosurgical waveform.4. The electrosurgical generator according to claim 3 , wherein the controller is coupled to the DC-DC buck converter and the DC-AC boost converter and the controller is further configured to adjust the first duty cycle and the second duty cycle to adjust the duty cycle of the substantially square electrosurgical waveform.5. The electrosurgical generator according to claim 4 , wherein the first duty cycle adjusts a peak voltage of each cycle of the substantially square electrosurgical waveform.6. The electrosurgical generator according to ...

TESTING DEVICE FOR AN ELECTROSURGICAL GENERATOR

A testing device for an electrosurgical generator, including a first connection port and a second connection port for connecting the testing device to a patient circuit of the electrosurgical generator and including an apparatus for producing a direct voltage between the first connection port and the second connection port. The testing device is characterized in that an HF current path of the patient circuit, running from the first connection port to the second connection port, extends through the testing device and in that the apparatus for producing a direct voltage is fed by an HF current flowing through the HF current path. 1. Testing device for an electrosurgical generator , having a first connection port and a second connection port for connecting the testing device to a patient circuit of the electrosurgical generator , and having a unit for generating a DC voltage between the first connection port and the second connection port ,wherein an HF current of the patient circuit runs from the first connection port to the second connection port through the testing device, and that the unit for generating a DC voltage is fed by an HF current flowing through the HF current path.2. Testing device according to claim 1 , wherein the unit for generating a DC voltage comprises a capacitor arranged in the HF current path.3. Testing device according to claim 2 , wherein the unit for generating a DC voltage is designed to conduct positive half-waves of the HF current through the capacitor and to not conduct negative half-waves of the HF current through the capacitor.4. Testing device according to claim 3 , wherein the unit for generating a DC voltage has two parallel HF current paths claim 3 , wherein a first HF current path comprises the capacitor and a first diode which is polarized in the direction of the positive half-waves of the HF current claim 3 , and wherein a second HF current path has a second diode which is polarized in the direction of the negative half-waves of ...

METHODS FOR IMPROVING HIGH FREQUENCY LEAKAGE OF ELECTROSURGICAL GENERATORS

The present disclosure is directed to an electrosurgical generator an H-bridge and a tank driven by the H-bridge. The tank includes a transformer having a primary winding and a secondary winding. The secondary winding includes a first coil and a second coil. In the electrosurgical generator, a capacitor is connected in series between the first coil and the second coil. 1. An electrosurgical generator comprising:an H-bridge; and a transformer having a primary winding and a secondary winding, the secondary winding including a first coil and a second coil; and', 'a capacitor connected in series between the first coil and the second coil., 'a tank driven by the H-bridge, the tank including2. The electrosurgical generator of claim 1 , further comprising a controller configured to drive the H-bridge.3. The electrosurgical generator of claim 1 , further comprising a charge drain electrically coupled to the capacitor.4. The electrosurgical generator of claim 3 , wherein the charge drain includes a switching member.5. The electrosurgical generator of claim 4 , wherein the switching member is a relay.6. The electrosurgical generator of claim 4 , further comprising a controller configured to control the switching member wherein the controller closes the switching member when the electrosurgical generator is inactive and opens the switching member when the electrosurgical generator is active.7. The electrosurgical generator of claim 4 , wherein the charge drain includes a resistor.8. The electrosurgical generator of claim 4 , wherein the drain includes at least one of a positive temperature coefficient thermistor or a resettable fuse.9. A printed circuit board for use in an electrosurgical generator claim 4 , the printed circuit board comprising:a plurality of contacts configured to receive a secondary winding of a transformer, wherein the plurality of contacts include: a first contact configured to be electrically coupled to an active terminal; a second contact configured to ...

SURGICAL TOOLS FOR SPINAL FACET THERAPY TO ALLEVIATE PAIN AND RELATED METHODS

Methods and surgical tools for treating back pain use a spinal facet debridement tool with cautery and denuding action and minimally invasive protocol that can denude and cauterize soft tissue associated with a synovial capsule of the spinal facet joint. 1. A method of minimally invasively treating a patient for back pain , comprising:introducing a guide cannula into the patient so that a distal end resides proximate a target spinal facet joint;attaching the guide cannula to an external stabilizer before, during or after the introducing step; thendenuding and cauterizing soft tissue at the target spinal facet joint, serially or concurrently, using a tool with a denuding and cauterization head that extends through the guide cannula, wherein the denuding is carried out by rotating the head of the tool to remove an end plate receptor region comprising a synovial capsule of the spinal facet joint thereby treating back pain; andsuctioning fluid from the guide cannula and out of a vacuum port in the stabilizer during the cauterizing to exhaust heat generated from the cauterizing.2. The method of claim 1 , wherein the guide cannula has a plurality of longitudinally spaced apart heat exhaust ports claim 1 , the method further comprising aligning a selected guide cannula heat exhaust port with the stabilizer vacuum port before or during the attaching step.3. The method of claim 1 , wherein the attaching is carried out to lockingly engage an external portion of the guide cannula at a desired user adjustable height to position a distal end of the guide cannula at the target spinal facet joint before the denuding and cauterizing is carried out.4. The method of claim 1 , wherein the introducing step is carried out by concurrently manually rotating and pushing the guide cannula inward toward the target spinal facet joint over a dilation tube to position the distal end of the guide cannula proximate the target spinal facet joint before the denuding and cauterizing.5. The method of ...

SYSTEMS AND METHODS FOR GENERATING ELECTROSURGICAL ENERGY USING A MULTISTAGE POWER CONVERTER

The electrosurgical systems and methods according to the present disclosure use a multi-stage power converter for generating electrosurgical energy. The electrosurgical systems include an electrosurgical generator having a power converter coupled to an electrical energy source and configured to generate electrosurgical energy. The power converter includes a boost converter configured to convert a first direct current from the electrical energy source to a second direct current, and a phase-shifted pulse width modulation (PS-PWM) resonant inverter configured to invert the second direct current to an alternating current. The electrosurgical generator also includes a plurality of sensors configured to sense a voltage and a current of the generated electrosurgical energy and a controller coupled to the power converter and the plurality of sensors. The controller includes a signal processor configured to determine tissue impedance based on the sensed voltage and current, and an output controller configured to select one of a plurality of output characteristics based on the determined tissue impedance, and to generate control signals to control the boost converter and the PS-PWM resonant inverter, according to the selected output characteristic. 1. An electrosurgical generator comprising: a boost converter configured to convert a first direct current from the electrical energy source to a second direct current; and', 'a phase-shifted pulse width modulation (PS-PWM) resonant inverter configured to invert the second direct current to an alternating current;, 'a power converter coupled to an electrical energy source and configured to generate electrosurgical energy, the power converter includinga plurality of sensors configured to sense voltage and current waveforms of the generated electrosurgical energy; and a signal processor configured to determine a tissue impedance based on the sensed voltage and current waveforms; and', 'an output controller configured to select one ...

Electrosurgical system with suction control apparatus, system and method

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

DUAL STAGE ENERGY ACTIVATION FOR ELECTROSURGICAL SHEARS

A surgical instrument includes an end effector, a handle assembly, and an electrode activation assembly. The end effector includes a first jaw, a second jaw, a knife, and an electrode assembly. The handle assembly includes a housing, and an arm. The arm can pivot the second jaw between the open position and the closed position. The arm can pivot relative to the housing between a first position, a second position, and a third position. The electrode activation assembly includes an activation button associated with the handle assembly, a resilient body, and a detent associated with either the housing or the arm. The activation button can activate the electrode assembly in response to the arm pivoting to the third position. The resilient body includes a first cam feature. The detent can engage the first cam feature as the arm pivots between the first position and the second position. 120.-. (canceled)21. A surgical instrument , comprising: (i) a first jaw,', '(ii) a second jaw operable to move relative to the first jaw between an open position and a closed position, and', '(iii) an electrode assembly;, '(a) an end effector, wherein the end effector comprises (i) a first body associated with the first jaw, and', '(ii) a second body associated with the second jaw, wherein the second body is configured to actuate the second jaw between the open position and the closed position, wherein the second body is configured to actuate relative to the first body between a first position, a second position, and a third position; and, '(b) a handle assembly, comprising (i) an activation component associated with the first body of the handle assembly, wherein the activation component is configured to activate the electrode assembly of the end effector is response to the second body actuating relative to the first body from the second position into the third position,', '(ii) a resilient body comprising a first cam feature, and', '(iii) a detent associated with either the first body or ...

SYSTEM OF MEDICAL DEVICES AND METHOD FOR PERICARDIAL PUNCTURE

A system for pericardial puncture includes a medical device having an elongate shaft extending between a proximal end and a distal end, and having a distally facing electrode at the distal end of the shaft. An impedance meter is electrically connectable with the electrode for measuring an impedance associated with the electrode. A display is provided for displaying an indication of a position of the electrode. The indication of the position is based on of the impedance. 1. A system for pericardial puncture comprising:a medical device having an elongate shaft extending between a proximal end and a distal end, and having an electrode at the distal end of the shaft;an impedance meter electrically connectable with the electrode for measuring an impedance associated with the electrode; anda display for displaying an indication of a position of the medical device, wherein the indication of the position is based on of the impedance.2. The system of claim 1 , wherein the indication of the position of the medical device is an indication of whether the medical is in contact with a target tissue.3. The system of claim 1 , wherein the medical device is an introducer and the shaft has a lumen extending therethrough from the proximal end to the distal end.4. The system of claim 3 , wherein;the shaft comprises a metallic tube and an electrically insulative sheathing on the tube; andthe electrode comprises an electrically exposed section of the tube.5. The system of claim 3 , wherein the shaft comprises an electrical conductor extending proximally from the electrode for electrically connecting the electrode to the impedance meter.6. The system of claim 3 , further comprising a puncture device advanceable through the lumen from the proximal end to the distal end.7. The system of claim 6 , whereinthe puncture device is a radiofrequency puncture device; andthe system further comprises a radiofrequency generator electrically connectable with the electrode for delivering radiofrequency ...

Method for Reducing Dynamic Power Consumption and Electronic Device

The present invention relates to a method for reducing dynamic power consumption and an electronic device. The method includes: receiving a bus signal; when information about access to the slave device exists in the bus signal, inputting a clock signal into the slave device and detecting a status signal sent by the slave device; and stopping inputting the clock signal into the slave device when the status signal of the slave device indicates that the slave device is in an idle state. A working clock of a device module, such as a slave device, in a chip is controlled by using a status signal of the slave device and a bus signal, which prevents unnecessary circuit turnover from occurring to the device module in the chip in a non-working state, thereby achieving a purpose of reducing dynamic power consumption of the device module in the chip. 1. A method for reducing dynamic power consumption of a slave device , the method comprising:receiving a bus signal;inputting a clock signal into the slave device when information about access to the slave device exists in the bus signal;detecting a status signal sent by the slave device when information about access to the slave device exists in the bus signal; andstopping input of the clock signal into the slave device when the status signal of the slave device indicates that the slave device is in an idle state.2. The method for reducing dynamic power consumption according to claim 1 , wherein detecting the status signal sent by the slave device comprises detecting an interface status signal sent by the slave device.3. The method for reducing dynamic power consumption according to claim 1 , wherein detecting the status signal sent by the slave device comprises detecting a status signal of an internal circuit claim 1 , and wherein the status signal is sent by the slave device.4. The method for reducing dynamic power consumption according to claim 1 , further comprising receiving a clock signal claim 1 , wherein inputting the ...

METHODS AND CIRCUITS FOR PROVIDING STABLE CURRENT AND VOLTAGE REFERENCES BASED ON CURRENTS FLOWING THROUGH ULTRA-THIN DIELECTRIC LAYER COMPONENTS

Low-power circuits for providing stable voltage and current references rely on currents flowing through ultra-thin dielectric layer components for operation. A current reference circuit includes driving circuitry operative to apply a voltage to the first terminal of the component with respect to the second terminal of the component in order to cause a current to flow through the dielectric layer, and sources a reference output current that is based on the current flow through the dielectric layer in response to the applied voltage. A voltage reference circuit includes a current source which applies a current to the ultra-thin dielectric layer component, and maintains an output node at a stable reference output voltage level based on the voltage across the ultra-thin dielectric layer component in response to the current flow through the dielectric layer. 1. A circuit comprising:a component having a first terminal, a second terminal, and an ultra-thin dielectric layer disposed between the first and second terminals such that the first and second terminals contact the dielectric layer and are physically separated from each other; anddriving circuitry operative to apply a voltage to the first terminal of the component with respect to the second terminal of the component in order to cause a current to flow through the dielectric layer,wherein the current flow through the dielectric layer while the driving circuitry is in operation is unidirectional.2. The circuit of claim 1 , wherein:the ultra-thin dielectric layer has a thickness of 3 nm or less;the first and second terminals are formed on opposite sides of the ultra-thin dielectric layer and are spaced apart from each other by the thickness of the dielectric layer.3. The circuit of claim 1 , wherein the current flow through the dielectric layer is caused by tunneling of charge carriers across the dielectric layer from one of the first and second terminals to the other of the first and second terminals.4. The circuit of ...

METHOD OF OPTIMIZING DISPATCH OF VARIABLE SPEED ENGINE-GENERATOR SETS

A method of optimizing the dispatch of generators connected to an electrical grid. At least one of the gensets is a variable-speed genset. The optimum dispatch for each load condition is continuously updated by changing the load distribution slightly, testing for performance improvement and updating the distribution set points if improvement is found. Alternatively, the power system may be controlled so that the optimum dispatch for each load condition is determined with the use of an online model that is continuously updated with actual operational data to thereby determine the optimum dispatch. 1. A method of controlling the sharing load between a plurality of electrical generators connected to an electrical grid supplying power to an electrical load , wherein at least one of the generators is a variable speed generator driven by an engine , and wherein each of the generators dispatch and provide power based on a distribution set point that varies based on the load on the electrical grid , the method comprising the steps of:(a) changing the load distribution between the plurality of generators;(b) monitoring the efficiency of the generators to determine whether the efficiency of the generators is improved after the changing of the load distribution;(c) if the efficiency of the generators is improved, changing the distribution set point to reflect the current load distribution;(d) repeating steps (a)-(c).2. The method of claim 1 , further comprising the step of collecting load data for at least one of the generator sets and preparing a dispatch algorithm to determine the distribution set point prior to connecting at least one of the generators to the electrical grid.3. The method of claim 1 , wherein the plurality of generators includes at least three generators and wherein during step (a) the load distribution is changed so that the load on at least one of the three generators remains unchanged.4. The method of claim 1 , wherein during step (a) the amount that the ...

METHOD AND SYSTEM FOR COMPENSATING FOR EXTERNAL IMPEDANCE OF ENERGY CARRYING COMPONENT WHEN CONTROLLING ELECTROSURGICAL GENERATOR

A control system for use with an electrosurgical generator which delivers electrosurgical energy to tissue has a control module. The module includes a processor executing an algorithm. The algorithm has the steps of determining a sensed voltage value corresponding to a sensed voltage signal output by the electrosurgical generator and determining a sensed current value corresponding to a sensed current signal output by the electrosurgical generator. The algorithm has the steps of determining phase information corresponding to a phase shift between the voltage signal and the current signal and determining a characteristic related to the electrosurgical energy delivered to the tissue using the phase information, the sensed voltage value and the sensed current value. 113-. (canceled)14. An electrosurgical generator comprising:a control system including: determining at least one of a sensed voltage value corresponding to a sensed voltage signal output by the electrosurgical generator;', 'determining a sensed current value corresponding to a sensed current signal output by the electrosurgical generator;', 'determining a phase shift value corresponding to a phase shift between the voltage and current signals;', 'determining at least one characteristic related to the electrosurgical energy delivered to the patient using the phase shift value and at least one of the sensed voltage value and the sensed current value; and', 'modulating the electrosurgical energy based in part on the at least one characteristic., 'a control module including at least one processor, said at least one processor executing an algorithm comprising the steps of15. The electrosurgical generator according to claim 14 , wherein the algorithm further comprises the step of:determining impedance information corresponding to impedance of at least one energy-carrying component;using the impedance information in the determining step to determine at least one of voltage, current and power.16. The ...

EXTERNAL READER FOR DEVICE MANAGEMENT

A system for tracking use of a medical device includes an electrosurgical generator, a readable module and a read module. The electrosurgical generator is configured to selectively deliver an electrosurgical energy signal to an electrosurgical delivery device connected to the electrosurgical generator. The readable module is connected to the electrosurgical delivery device and configured to uniquely identify the electrosurgical delivery device. The read module is in communication with the electrosurgical generator that identifies the read module, the read module configured to identify the readable module and further configured to determine the viability of the electrosurgical delivery device. Delivery of electrosurgical energy to the electrosurgical delivery device is enabled by the read module if the electrosurgical delivery device is a viable device. 120-. (canceled)21. A method for enabling delivery of energy to a surgical instrument , the method comprising:positioning a scanner adjacent a readable module, the readable module coupled to a surgical instrument and having information stored therein relating to the surgical instrument;scanning the readable module using the scanner;transferring the information stored in the readable module from the scanner to a generator;determining, based on the information stored in the readable module, whether the surgical instrument is at least one of compatible with the generator, viable, or safe to use; andenabling delivery of energy from the generator to the surgical instrument if the surgical instrument is determined to be at least one of compatible with the generator, viable, or safe to use.22. The method according to claim 21 , further comprising transferring the information stored in the readable module from the scanner to a remotely-located device tracking and management system prior to the information being transferred from the scanner to the generator.23. The method according to claim 22 , wherein the remotely-located ...

DUAL MODE POWER SUPPLY FOR VOLTAGE CONTROLLED OSCILLATORS

The disclosure relates to technology for power supply for a voltage controller oscillator (VCO), where the power supply has a closed loop mode and an open loop mode. In closed loop mode, a peak detector circuit determines the amplitude of the output for the VCO, which is compared to a reference value in an automatic gain control loop. An input voltage for the VCO is determined based on a difference between the reference value and the output of the peak detector circuit. The peak detector circuit can be implemented using parasitic bipolar devices in an integrated circuit formed in a CMOS process. While operating in the closed loop mode, a controller monitors the input voltage and, when the input voltage is stabilized, the controller uses this input voltage value determined in open loop mode. 1. An oscillator system , comprising:a voltage controller oscillator (VCO) configured to generate an output waveform having an amplitude based on an input voltage;a reference generator configured to provide a reference value;an automatic gain control loop configured to receive the output waveform, determine an indication of the amplitude of the output waveform, and generate a difference between the reference value and the indication of the amplitude of the output waveform; and the controller, when operating in the oscillator system in the first mode, configures the automatic gain control loop to provide the input voltage based on the difference and is configured to determine a second mode input voltage value based on monitoring the provided input voltage; and', 'the controller, when operating in the oscillator system in the second mode, is configured to provide the second mode input voltage value as the input voltage., 'a controller configured to operate the oscillator system in both a first mode and a second mode2. The oscillator system of claim 1 , wherein the controller is further configured to operate the oscillator system in the second mode upon a subsequent start up.3. The ...

Power Supply Device for High-Frequency Treatment Tool, High-Frequency Treatment System, and Method of Controlling High-Frequency Treatment Tool

A power supply device used with a high-frequency treatment tool includes a power supply, a detection circuit, and a controller. The power supply supplies high-frequency electric power to an electrode of the high-frequency treatment tool. The detection circuit detects a first signal and a second signal. The first signal is a signal representing an output voltage output from the power supply to the high-frequency treatment tool. The second signal is a signal representing electric power returned from the high-frequency treatment tool back to the power supply. The controller includes one or more processors as hardware. The one or more processors calculate a return loss representing a state of contact between a living tissue and the electrode based on the first signal and the second signal. The one or more processors control the power supply to change its output between a first output level and a second output level. 1. A power supply device used with a high-frequency treatment tool comprising:a power supply that supplies high-frequency electric power to an electrode of the high-frequency treatment tool;a detection circuit that detects a first signal which is a signal representing an output voltage output from the power supply to the high-frequency treatment tool and a second signal which is a signal representing electric power returned from the high-frequency treatment tool back to the power supply; anda controller;wherein the controller includes one or more processors as hardware; and calculate a return loss representing a state of contact between a living tissue and the electrode based on the first signal and the second signal, and', 'control the power supply to change its output between a first output level which is an output level thereof for treating the living tissue and a second output level which is an output level thereof lower than the first output level, and set the output of the power supply to the second output level when the return loss meets a ...

Power Supply Device for High-Frequency Treatment Tool, High-Frequency Treatment System, and Method of Controlling High-Frequency Treatment Tool

A power supply device used with a high-frequency treatment tool includes a power supply, an active-side detection circuit, a passive-side detection circuit, and a controller. The power supply supplies high-frequency electric power to an electrode of the high-frequency treatment tool. The active-side detection circuit detects a first signal which is a signal representing an output voltage output from the power supply to the high-frequency treatment tool. The passive-side detection circuit detects a second signal which is a signal representing electric power passing through a living tissue back to the power supply. The controller includes one or more processors calculate an insertion loss representing a state of contact between the living tissue and the electrode based on the first signal and the second signal. The one or more processors control the power supply to change its output between a first output level and a second output level. 1. A power supply device used with a high-frequency treatment tool comprising:a power supply that supplies high-frequency electric power to an electrode of the high-frequency treatment tool;an active-side detection circuit that detects a first signal which is a signal representing an output voltage output from the power supply to the high-frequency treatment tool;a passive-side detection circuit that detects a second signal which is a signal representing electric power passing through a living tissue back to the power supply; anda controller;wherein the controller includes one or more processors as hardware; and calculate an insertion loss representing a state of contact between the living tissue and the electrode based on the first signal and the second signal, and', 'control the power supply to change its output between a first output level which is an output level thereof for treating the living tissue and a second output level which is an output level thereof lower than the first output level, and set the output of the power ...

ELECTRODE UNIT FOR A MEDICAL RESECTOSCOPE

An electrode unit for a medical resectoscope for the electrosurgical resection of tissue in a fluid-filled cavity in a patient includes an elongated rod-shaped electrode shaft which on its distal end has an electrode support and a cutting electrode that is fastened to the electrode support and may be acted on by alternating current. A spatula element that is designed for supporting tissue and that extends distally beyond the cutting electrode is situated on the electrode support, the spatula element having two support flanks that extend distally on both sides of the cutting electrode to form outer edges of the spatula element, at least one of the support flanks having an inwardly directed indentation to form a constriction in the area of the cutting electrode. 1. An electrode unit for a medical resectoscope for the electrosurgical resection of tissue in a fluid-filled cavity in a patient , having an elongated rod-shaped electrode shaft which on its distal end has an electrode support and a cutting electrode that is fastened to the electrode support and to which an alternating current can be applied , wherein a spatula element that is designed for supporting tissue and that extends distally beyond the cutting electrode is situated on the electrode support , the spatula element having two support flanks that extend distally on both sides of the cutting electrode to form outer edges of the spatula element , at least one of the support flanks having an inwardly directed indentation to form a constriction in the area of the cutting electrode.2. The electrode unit according to claim 1 , wherein the spatula element on its distal end has a straight front flank that extends transversely with respect to the shaft axis.3. The electrode unit according to claim 1 , wherein the spatula element is formed from a rod that is bent in a looped shape claim 1 , and whose free ends are fixedly connected to the electrode support.4. The electrode unit according to claim 1 , wherein the ...

BIPOLAR IRRIGATED RADIOFREQUENCY ABLATION TINED PROBE

The disclosure relates to systems and methods for irrigated bipolar radiofrequency ablation. Some examples of the system include an elongate inner electrode assembly and an elongate outer electrode assembly. An irrigation path for irrigation fluid flow is defined between the outer surface of the inner electrode assembly and the outer surface of the outer electrode assembly. 1. A system for bipolar , irrigated , radiofrequency ablation comprising: a sheath,', 'a first lead within the sheath, and', 'an electrode array comprising three or more electrode tines positioned at the distal end of the inner electrode assembly and electrically connected to the first lead, wherein the electrode array is moveable between a first position contained within the sheath and a second position protruding from a distal end of the sheath;, 'an elongate inner electrode assembly having a distal end, a proximal end, and an outer surface, the inner electrode assembly comprisingan elongate outer electrode assembly having a distal end and a proximal end and comprising an inner surface defining a lumen,', 'a shaft electrode near the distal end of the cannula on an outer surface of the outer electrode assembly, and', 'a conductive path from the proximal end of the outer electrode assembly to the shaft electrode; and, 'a cannula having a distal end and a proximal end, the outer electrode assembly comprisingan irrigation path defined between the outer surface of the inner electrode assembly and an outer surface of the outer electrode assembly;wherein the inner electrode assembly is configured to be positioned within the lumen of the outer electrode assembly, and wherein the system is configured for attaching to a generator to provide radiofrequency current flow between the electrode array and the shaft electrode.2. The system of further comprising an insulation layer between the inner electrode assembly and the outer electrode assembly claim 1 , wherein the insulation layer is selected from a ...

ELECTRODE INSTRUMENT AND RESECTOSCOPE, PROTECTED AGAINST SHORT CIRCUIT

A bipolar electrode instrument for use in a resectoscope and having an elongated shaft section, through which a first conductor extends, which forms a working electrode to which high-frequency current can be applied at the distal end of the electrode instrument, and a second conductor further extending through the shaft section, which forms a counter electrode in the distal end region of the electrode instrument. The working electrode and the counter electrode are spatially separated from one another in such a way that the distance between them cannot be bridged by a straight conductor which has a length of 6 mm or less. When used in a resectoscope for endoscopic surgery with a cladding tube, the electrode instrument is mounted so as to be longitudinally displaceable inside the cladding tube. 1. A bipolar electrode instrument for use in a resectoscope , the electrode instrument having an elongated shaft section through which a first conductor extends , which at the distal end of the electrode instrument forms a working electrode to which high-frequency current can be applied , a second conductor also extending through the shaft section and forming a counter electrode in the distal end region of the electrode instrument , wherein the working electrode and the counter electrode are spatially separated from one another in such a way that the distance between them cannot be bridged by means of a straight conductor which has a length of 6 mm or less.2. The electrode instrument according to claim 1 , wherein the distance between the working electrode and the counter electrode is more than 6 mm.3. The electrode instrument according to claim 1 , wherein an insulator is arranged spatially between the working electrode and the counter electrode claim 1 , which insulator intersects all possible straight connecting lines between the working electrode and the counter electrode that are 6 mm or less in length.4. The electrode instrument according to claim 3 , wherein the ...

ILLUMINATED ELECTROSURGICAL SYSTEM AND METHOD OF USE

A surgical system that illuminates a surgical site using one or more illumination means is powered by radiofrequency energy produced by an electrosurgical generator. Illumination may occur whether or not current is being delivered from an active electrode to target tissue. 1. A system for illuminating or facilitating treatment in a surgical field , said system comprising:an electrosurgical generator configured to provide radiofrequency power at an output voltage;voltage reduction means electrically coupled with the electrosurgical generator and configured to provide a second voltage different than the output voltage;an illumination element or other electrically activated device requiring power for operation, electrically coupled with the voltage reduction means, wherein the radiofrequency power from the electrosurgical generator energizes the illumination element or other device and produces light for illuminating or facilitates treatment in the surgical field, and wherein the illumination element or other device is energized with the second voltage, andwherein the second voltage is less than the output voltage.2. The system of claim 1 , further comprising an electrosurgical instrument operably coupled with the electrosurgical generator claim 1 , and wherein the illumination element or other device is coupled to the electrosurgical instrument.3. The system of claim 2 , wherein the electrosurgical instrument comprises a suction instrument or an electrosurgical pencil for cutting and coagulating tissue.4. The system of claim 3 , wherein the illumination element or the other device is releasably coupled with the suction instrument to or the electrosurgical pencil.5. The system of claim 3 , wherein the illumination element or the other device is coupled to a telescoping tube claim 3 , the telescoping tube slidably coupled with a handle.6. The system of claim 1 , wherein the illumination element is configured to illuminate the surgical field when current provided by the ...

SYSTEM AND METHOD FOR TISSUE SEALING

An electrosurgical generator is disclosed. The generator includes an RF output stage configured to supply electrosurgical energy to tissue via at least one active electrode configured to apply electrosurgical energy to tissue; sensing circuitry configured to measure impedance of tissue; and a controller. The controller is configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid; generate a target impedance trajectory as a function of measured impedance and desired rate of change based on the tissue reaction determination, wherein the target impedance trajectory includes a plurality of target impedance values; and drive tissue impedance along the target impedance trajectory by adjusting the output level of the electrosurgical generator to substantially match tissue impedance to a corresponding target impedance value for at least a predetermined minimum time period. 18-. (canceled)9. A method for performing an electrosurgical procedure comprising:applying electrosurgical energy from an electrosurgical generator at an output level to tissue;determining whether tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid;generating a target impedance trajectory as a function of measured impedance and desired rate of change based on the tissue reaction determination, the target impedance trajectory including a plurality of target impedance values; anddriving tissue impedance along the target impedance trajectory by adjusting the output level to substantially match tissue impedance to a corresponding target impedance value for at least a predetermined minimum time period.10. The method according to claim 9 , further comprising:measuring phase between voltage and current waveforms of the ...

OPERATION METHOD OF ELECTRIC POWER SOURCE DEVICE, ELECTRIC POWER SOURCE DEVICE, AND HIGH-FREQUENCY TREATMENT SYSTEM

An operation method of an electric power source device for operating a high-frequency treatment instrument configured to perform a high-frequency treatment on a biological tissue includes causing a high-frequency electric power source circuit to output electric power; acquiring an initial impedance value in a first period from a start of the output; determining an increase rate of an output voltage relative to time; increasing the output voltage of the high-frequency electric power source circuit in accordance with the increase rate in a second period; acquiring the value relating to impedance of the biological tissue in the second period; and terminating the second period after the value relating to the impedance reaches a minimum value. 1. An operation method of an electric power source device for operating a high-frequency treatment instrument configured to perform a high-frequency treatment on a biological tissue , the operation method comprising:causing, by a control circuit, a high-frequency electric power source circuit to output electric power;acquiring, by the control circuit, an initial impedance value which is a value relating to an impedance of the biological tissue, in a first period from a start of the output;determining, by the control circuit, an increase rate of an output voltage relative to time, based on the initial impedance value;increasing, by the control circuit, the output voltage of the high-frequency electric power source circuit in accordance with the increase rate in a second period following the first period;acquiring, by the control circuit, the value relating to the impedance of the biological tissue in the second period; andterminating, by the control circuit, the second period after the value relating to the impedance reaches a minimum value,wherein in the second period, the output voltage is increased linearly with time, and, as the initial impedance value becomes greater, the increase rate is made smaller.2. (canceled)3. (canceled) ...

SURGICAL DEVICE CONNECTION HUB

A surgical instrument which is configured to be releasably connected to a hand-piece is disclosed. The surgical instrument includes an elongate shaft, an end effector at a distal end of the elongate shaft, and a connection hub at a proximal end of the elongate shaft. The connection hub includes a moveable member moveable relative to the elongate shaft. The moveable member is configured to be switchable between an on position and an off position. During insertion of the surgical instrument into the hand-piece, an electrical connection therebetween is prevented by the connection hub when the moveable member is in the on position.

POWER SUPPLY FOR VOLTAGE CONTROLLED OSCILLATORS WITH AUTOMATIC GAIN CONTROL

The disclosure relates to technology for power supply for a voltage controller oscillator (VCO). A peak detector circuit determines the amplitude of the output for the VCO, which is compared to a reference value in an automatic gain control loop. An input voltage for the VCO is determined based on a difference between the reference value and the output of the peak detector circuit. The peak detector circuit can be implemented using parasitic bipolar devices in an integrated circuit formed in a CMOS process. 1. An oscillator system , comprising:a voltage controlled oscillator (VCO) configured to generate an oscillator output waveform having an amplitude based on an input voltage;a peak detector configured to receive the oscillator output waveform and determine an indication of the amplitude of the oscillator output waveform;a reference generator configured to provide a reference value; anda gain control circuit configured to receive the reference value and the indication of the amplitude of the oscillator output waveform and generate the input voltage based on a difference between the reference value and the indication of the amplitude of the oscillator output waveform.2. The oscillator system of claim 1 , further comprising:a source follower circuit connected between the gain control circuit and the VCO to provide the input voltage to the VCO; anda low pass filter connected between the gain control circuit and the source follower circuit, the low pass filter configured to filter the input voltage received from the gain control circuit and provided to the source follower circuit.3. The oscillator system of claim 2 , further comprising:a bypass path connected in parallel with the low pass filter between the gain control circuit and the source follower circuit; andone of more control circuits connected to the bypass path and configured to selectively connect the bypass path during a start-up mode.4. The oscillator system of claim 1 , wherein the gain control circuit ...

SYSTEM AND METHOD FOR OPERATING A TOUCHSCREEN IN AN ELECTROSURGICAL GENERATOR

A system and method for operating a touchscreen of a gas-enhanced electrosurgical generator. The generator has a display module and a primary controller. The display module has a plurality of touch sensors, a PCB power relay and a CPU. The method comprises selecting electrosurgery settings through a graphical user interface, activating through an input device plasma delivery from the gas-enhanced electrosurgical generator, disabling the plurality of touch sensors through software running on the primary controller, disconnecting power from the plurality of touch sensors with the PCB power relay in response to the disabling of the plurality of touch sensors, applying power to an electrode in the plasma accessory connected to the gas-enhanced electrosurgical generator, and de-activating through an input device plasma delivery from the gas-enhanced electrosurgical generator to the plasma accessory connected to the gas-enhanced electrosurgical generator. 1. A method for operating a touchscreen in a gas-enhanced electrosurgical generator having a display module and a primary controller , wherein said display module has a plurality of touch sensors , a PCB power relay and a CPU , the method comprising:selecting electrosurgery settings through a graphical user interface displayed on said touchscreen;activating through an input device plasma delivery from said gas-enhanced electrosurgical generator to a plasma accessor connected to said gas-enhanced electrosurgical generator;disabling said plurality of touch sensors through software running on said primary controller in response to said activating plasma delivery;disconnecting power from said plurality of touch sensors with said PCB power relay in response to said disabling of said plurality of touch sensors;applying power to an electrode in said plasma accessory connected to said gas-enhanced electrosurgical generator;de-activating through an input device plasma delivery from said gas-enhanced electrosurgical generator to ...

DRIVE DEVICE

A drive device includes: a drive signal generator configured to generate a pair of drive signals, a pair of buffer circuits, a pair of switching elements configured to repeatedly turn on and off the pair of drive signals, a first radiation material that has a longitudinal axis and that is arranged to face one of the pair of switching elements, a second radiation material that has a longitudinal axis and that is arranged to face an other one of the pair of switching elements, a fan and a casing. The switching elements, the first radiation material, and the second radiation material are positioned within a projection plane of the fan viewed along the longitudinal axes of the first radiation material and the second radiation material. 1. A drive device comprising:a drive signal generator configured to generate a pair of drive signals for driving a high-frequency treatment tool that is electrically connected to the drive signal generator;a pair of buffer circuits each configured to input respective ones of the pair of drive signals;a pair of switching elements configured to repeatedly turn on and off the pair of drive signals that are output from the pair of buffer circuits at a drive frequency for driving the high-frequency treatment tool or higher;a first radiation material that has a longitudinal axis and that is arranged to face one of the pair of switching elements;a second radiation material that has a longitudinal axis and that is arranged to face an other one of the pair of switching elements;a fan configured to generate an airflow; anda casing configured to house the drive signal generator, the pair of switching elements, the first radiation material, the second radiation material, and the fan,wherein the pair of switching elements, the first radiation material, and the second radiation material are positioned within a projection plane of the fan viewed along the longitudinal axes of the first radiation material and the second radiation material.2. The drive ...

SELF-POWERED CRYSTAL OSCILLATOR AND METHOD OF GENERATING OSCILLATION SIGNAL

A self-powered power crystal oscillator XO includes a crystal unit and a power injection module. The crystal unit is arranged to oscillate to generate an oscillation signal. The power injection module is coupled to the crystal unit, and is arranged to intermittently inject energy to the crystal unit. 1. A crystal oscillator , comprising:a crystal unit, arranged to oscillate to generate an oscillation signal; anda power injection module, coupled to the crystal unit, arranged to intermittently inject energy to the crystal unit.2. The crystal oscillator of claim 1 , wherein the power injection module comprises:a slicing stage, coupled to the crystal unit, arranged to receive and slice at least the oscillation signal to generate at least one sliced signal;a pulse generating stage, coupled to the slicing stage, arranged to receive the at least one sliced signal and accordingly extract at least one pulse signal from the least one sliced signal; anda power delivering stage, coupled to the pulse generating stage, arranged to intermittently deliver the energy to the crystal unit according to the at least one pulse signal.3. The crystal oscillator of claim 2 , wherein the crystal unit has a first end; when a voltage level of the first end goes up claim 2 , the power delivering stage provides a first supply voltage higher than the voltage level of the first end to the first end; and when the voltage level of the first end goes down claim 2 , the power delivering stage provides a second supply voltage lower than the voltage level of the first end to the first end.4. The crystal oscillator of claim 3 , wherein the crystal unit further has a second end; the power delivering stage provides the second supply voltage to the second end of the crystal unit when providing the first supply voltage to the first end of the crystal unit; and the power delivering stage provides the first supply voltage to the second end of the crystal unit when providing the second supply voltage to the ...

ULTRASONIC SYSTEMS AND METHODS WITH TISSUE RESISTANCE SENSING

Surgical systems include an ultrasonic device, a generator coupled to the ultrasonic device, and a return pad. The generator is configured to control supply of the ultrasonic energy to the ultrasonic device and control supply of an energy pulse to the ultrasonic device at different times. The ultrasonic device generates a current pulse signal in response to the energy pulse. The generator also measures a current feedback signal at the return pad, the current feedback signal resulting from the current pulse signal, and estimate a tissue property of tissue grasped by the ultrasonic device based on the current feedback signal. 1. A surgical system , comprising:an ultrasonic device including a first jaw member and a second jaw member, the ultrasonic device configured to receive ultrasonic energy and to treat tissue grasped between the first jaw member and the second jaw member;a return electrode; and control supply of the ultrasonic energy to the ultrasonic device at a first time;', 'control supply of an energy pulse to the ultrasonic device at a second time different from the first time;', 'measure a current feedback signal at the return electrode resulting from a current pulse signal generated by the ultrasonic device in response to the energy pulse; and', 'estimate a tissue property of the tissue grasped between the first jaw member and the second jaw member based on the current feedback signal., 'a generator coupled to the ultrasonic device and the return electrode, the generator configured to2. The surgical system of claim 1 , wherein the generator is configured to control the ultrasonic energy to heat the tissue to a predetermined temperature for a period of time until the tissue is sealed.3. The surgical system of claim 1 , wherein the generator estimates a change in tissue impedance.4. The surgical system of claim 3 , wherein the generator is further configured to determine desiccation or coagulation of the tissue based on the change in tissue impedance.5. The ...

GAIN COMPENSATION FOR A FULL BRIDGE INVERTER

An electrosurgical generator includes a gain-compensated full bridge topology. Gain nonlinearity is corrected by applying impedance and phase correction factors to a control loop to achieve a linear gain structure. In embodiments, gain compensation is performed by comparing an RF setpoint signal with a calculated output signal to generate a first error signal. An impedance correction factor is applied to the first error signal to generate a second error signal. The second error signal is processed by a proportional-integral-derivative controller to generate a phase control signal. A phase control correction factor is applied to the phase control signal to generate a corrected pulse width modulation driving signal, which is used to generate PWM driving signals for a full-bridge inverter. One or more sensors provide feedback for comparison with the RF setpoint. 1. A system for controlling an electrosurgical generator using a gain-compensated full bridge topology , comprising:a summation unit configured to receive an RF setpoint signal and a calculated output signal, and to generate a first error signal corresponding to the difference between the RF setpoint signal and the calculated output signal;an impedance gain compensation unit configured to receive the first error signal and an impedance signal corresponding to the load impedance, and to generate a second error signal in accordance with an impedance correction calculation;a proportional-integral-derivative controller which receives the second error signal and generates a phase control signal; a phase preprocessing module that is configured to receive the phase control signal, apply a phase gain correction function to the phase control signal to generate a corrected pulse width modulation driving signal; and', 'a pulse width modulation driver configured to generate a first full bridge driving signal, and a second full bridge driving signal that is shifted in phase from the first full bridge driving signal by an ...

DIGITALLY CONTROLLED OSCILLATOR AND ELECTRONIC DEVICE INCLUDING THE SAME

Provided are a digitally controlled oscillator and an electronic device including the digitally controlled oscillator. The digitally controlled oscillator includes a digital control unit and a power control oscillation unit. The digital control unit compensates for a difference between a feedback signal of an output power and a reference power set based on an input digital control signal and outputting an output power. The power control oscillation unit receives a signal related to the output power, and generates an output clock having an oscillation frequency in response to the signal related to the output power. 1. A digitally controlled oscillator comprising:a digital control unit that compensates for a difference between a feedback signal received from an output of the digital control unit and a reference power, and outputs an output power in response to the compensated difference, wherein a power level of the reference power is set in response to an input digital control signal; anda power control oscillation unit that receives a signal related to the output power, and generates an output clock having an oscillation frequency in response to the signal related to the output power.2. (canceled)3. The digitally controlled oscillator of claim 1 , wherein the digital control unit comprises:a power level setting unit for setting the power level of the reference power in response to the digital control signal; anda power level compensation unit for compensating for the difference between the reference power and the feedback signal.4. The digitally controlled oscillator of claim 3 , wherein the power level setting unit comprises:{'sup': 'N', 'a power level setting unit including a plurality of unit level cells, a number of which corresponds to a value of 2, wherein N is a number of bits in the digital control signal; and'}a selection unit for selecting the power level of the reference power as one of first power levels by turning on or turning off of each of the unit ...

CONTROLLING IMPEDANCE RISE IN ELECTROSURGICAL MEDICAL DEVICES

Various embodiments are directed to electrosurgical systems for providing an electrosurgical signal to a patient. A control circuit may, for a first application period, apply the electrosurgical signal to first and second electrodes according to a first mode. In the first mode, the control circuit may limit the electrosurgical signal to a first maximum power when the impedance between the first and second electrodes exceeds a first mode threshold. The control circuit may also, for a second application period after the first application period, apply the electrosurgical signal according to a second mode. In the second mode, the control circuit may limit the electrosurgical signal to a second mode maximum power when the impedance between the first and second electrodes exceeds a second mode threshold. The second maximum power may be greater than the first maximum power. 120-. (canceled)21. An electrosurgical system , comprising: a first jaw comprising a first electrode; and', 'a second jaw comprising a second electrode, wherein the second jaw is movable relative to the first jaw between an open configuration and a closed configuration; and, 'an end effector, comprising receive an input indicating a repeat mode;', 'apply a first tissue bite algorithm to the first electrode and the second electrode based on an occurrence of a first tissue bite;', 'enter a hold state at a termination of the first tissue bite algorithm; and', 'determine an occurrence of a second tissue bite., 'a control circuit, configured to22. The electrosurgical system of claim 21 , wherein the control circuit is configured to determine the occurrence of the second tissue bite by determining a reduction in impedance between the first electrode and the second electrode.23. The electrosurgical system of claim 21 , wherein the control circuit is configured to determine the occurrence of the second tissue bite by monitoring movement of a jaw closure trigger to an open position and then to a closed position ...

Plasma processing apparatus

An apparatus includes a chamber main body, a microwave output device that generates a microwave having a bandwidth, a wave guide tube that is connected between the microwave output device and the chamber main body, and tuner that is provided in the wave guide tube. The microwave output device generates a microwave of which power is pulse-modulated to have a high level and a low level. The tuner includes a stub configured to be adjusted a protrusion amount with respect to an internal space of the wave guide tube, a tuner wave detection unit that detects a measured value corresponding to power of a microwave in the wave guide tube at a timing based on the pulse frequency and the setting duty ratio, and a tuner control unit that adjusts a protrusion amount of the stub on the basis of the measured value detected by the tuner wave detection unit. 1. A plasma processing apparatus comprising:a chamber main body;a microwave output device configured to generate a microwave having a center frequency and a bandwidth respectively corresponding to a setting frequency and a setting bandwidth instructed by a controller, the microwave having power pulse-modulated such that a pulse frequency, a duty ratio, a high level and a low level respectively corresponding to a pulse frequency, a setting duty ratio, high level setting power and low level setting power instructed by the controller;a wave guide tube connected between the microwave output device and the chamber main body; anda tuner that provided in the wave guide tube, a stub configured to be adjusted a protrusion amount with respect to an internal space of the wave guide tube,', 'a tuner wave detection unit configured to detect a measured value corresponding to power of a microwave in the wave guide tube at a timing based on the pulse frequency and the setting duty ratio, and', 'a tuner control unit configured to adjust a protrusion amount of the stub on the basis of the measured value detected by the tuner wave detection unit., ...

SYSTEMS AND METHODS FOR ACTIVATING TRANSDUCERS

Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation. 1. A transducer-activation system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:reception instructions configured to cause reception of a selection from the input-output device system of at least some of a plurality of transducers of a transducer-based device, the plurality of transducers arranged in a distribution, the distribution positionable in a bodily cavity;generation instructions configured to, in response to receiving at least part of the selection, cause generation of a plurality of transducer sets from the at least some of the plurality of transducers, the plurality of transducer sets comprising at least a first ...

SKIN TREATMENT APPARATUS USING RF ENERGY AND METHOD FOR SKIN TREATMENT USING SAME

Disclosed herein are a skin treatment apparatus using RF energy and a skin treatment method using the same. There are provided a skin treatment apparatus using RF energy, including a first handpiece configured to include a first electrode unit coming into contact with a skin surface and to form perforations through which an agent penetrates by transferring RF energy to the skin surface through the first electrode unit, a second handpiece configured to include a second electrode unit inserted into the inside of the skin and to insert the second electrode unit into the inside of the skin into which the agent has penetrated and transfer the RF energy, and a controller configured to control parameters of the RF energy transferred to the first electrode unit and the second electrode unit, and a treatment method using the same. 1. A skin treatment apparatus using radio frequency RF energy , comprising:a first handpiece configured to comprise a first electrode unit coming into contact with a skin surface and to form perforations through which an agent penetrates by transferring RF energy to the skin surface through the first electrode unit;a second handpiece configured to comprise a second electrode unit inserted into an inside of the skin and to insert the second electrode unit into the inside of the skin into which the agent has penetrated and transfer the RF energy; anda controller configured to control parameters of the RF energy transferred to the first electrode unit and the second electrode unit.2. The skin treatment apparatus of claim 1 , wherein the agent comprises an anesthesia component in order to alleviate pain occurring when the second electrode unit is inserted when treatment using the second handpiece is performed.3. The skin treatment apparatus of claim 1 , wherein:the first handpiece selectively operates in a first mode in which perforations are formed in the skin surface or a second mode in which RF energy for lesion treatment on a skin surface is ...

MEDICAL DEVICE AND CONTROL METHOD

A medical device includes: an end effector configured to apply treatment energy for treating a living tissue according to supplied power; a drive source configured to supply the power to the end effector; and a processor configured to classify, in a first time period after a supply of the power to the end effector is started, the living tissue into any one of a plurality of tissue types based on a first parameter detected in the first time period, control an operation of the drive source after the first time period based on the classified tissue type, reclassify the classified living tissue into any one of the plurality of tissue types based on a second parameter detected after the first time period, and control an operation of the drive source based on the tissue type into which the classified living tissue is reclassified. 1. A medical device comprising:an end effector configured to apply treatment energy for treating a living tissue according to supplied power;a drive source configured to supply the power to the end effector; and classify, in a first time period after a supply of the power to the end effector is started, the living tissue into one of a plurality of tissue types based on a first parameter detected in the first time period;', 'control a first operation of the drive source after the first time period based on the classified tissue type,', 'reclassify the classified living tissue into one of the plurality of tissue types based on a second parameter detected after the first time period, and', 'control a second operation of the drive source based on the tissue type into which the classified living tissue is reclassified., 'a processor configured to2. The medical device according to claim 1 , wherein:the processor is configured to control, during the first time period, a third operation of the drive source to cause the drive source to supply the end effector with a constant power, andthe first parameter includes an impedance value of the living tissue ...

ABLATION APPARATUS AND SYSTEM TO LIMIT NERVE CONDUCTION

A method of managing a system of minimally invasive surgery. The management method includes providing a practitioner with a minimally invasive surgery system including a controller. One or more use parameters is stored to memory associated with the controller. In addition, an electrosurgical probe having its own memory is provided to mate with the remaining elements of the system. Complementary use parameters are stored in the memory of the probe. The management method also includes communicating and comparing the use parameters of the controller with the complementary use parameters of the probe and managing the use of the electrosurgical probe according to the use parameters. 1a probe body defining a longitudinal probe axis,multiple conductive electrodes operatively disposed along the probe axis,and dielectric insulator operatively disposed between the conductive electrodes,wherein, the conductive electrodes are in electrical communication with a radiofrequency energy source,wherein, at least one of the conductive electrodes is in electrical communication with a stimulation current source.. An electrosurgical probe comprising: This application is a continuation of U.S. patent application Ser. No. 13/570,138 filed Aug. 8, 2012, which is a continuation of U.S. patent application Ser. No. 12/612,360, filed on Nov. 4, 2009, which is a continuation of U.S. patent application Ser. No. 11/460,870, filed on Jul. 28, 2006, and also a continuation of U.S. patent application Ser. No. 11/559,232, filed Nov. 13, 2006, both of which are a continuation-in-part applications of U.S. patent application Ser. No. 10/870,202, filed Jun. 17, 2004, each of which applications are hereby incorporated by reference.The present invention relates to a method and device used in the field of Minimally Invasive Surgery (or MIS) for interrupting the flow of signals through nerves. These nerves may be rendered incapable of transmitting signals either on a temporarily (hours, days or weeks) or a ...

ELECTROSURGICAL APPARATUS WITH DYNAMIC LEAKAGE CURRENT COMPENSATION AND DYNAMIC RF MODULATION

The present disclosure is directed toward an electrosurgical apparatus including an electrosurgical generator that may be coupled to an electrosurgical applicator. In one aspect of the present disclosure, a controller of the electrosurgical generator is configured to execute a dynamic leakage current compensation algorithm or function to compensate for the leakage current of an electrosurgical applicator and accompanying cable coupling the electrosurgical applicator to electrosurgical generator. In another aspect of the present disclosure, the controller of the electrosurgical generator is configured to execute a dynamic radio frequency modulation algorithm or function to dynamically control the crest factor of the output waveform of the electrosurgical generator based on the measured impedance across an active and return terminal of the electrosurgical generator. 1. An electrosurgical generator comprising:a power generator circuit configured to output electrosurgical energy;an active terminal coupled to an electrosurgical applicator via a cable, the active terminal configured to provide the electrosurgical energy to the electrosurgical applicator, the electrosurgical applicator providing the electrosurgical energy to a load;a return terminal configured to provide a return path for the electrosurgical energy applied to the load;a sensor coupled to the active terminal and return terminal, the sensor configured to sample the electrosurgical energy at the active terminal and return terminal for voltage data and current data; and [ a leakage current associated with the electrosurgical applicator and the cable based on the sampled voltage data and current data,', 'a power level of the electrosurgical energy delivered to the load by the electrosurgical applicator based on the leakage current, and, 'determines, 'adjusts the power level of electrosurgical energy outputted by the power generator circuit to match the predetermined power level if it is determined that the ...

METHOD AND SYSTEM FOR ADJUSTING SOURCE IMPEDANCE AND MAXIMIZING OUTPUT BY RF GENERATOR

An electrosurgical system includes an electrosurgical probe connected to a control console, wherein the probe is capable of coagulating and ablating tissue depending on a selected operating mode. Before operating the system, probe-specific data stored in a memory device associated with the probe is read by a processing device in the console. The data includes source impedance values specific to a coagulation or cutting mode of operation. A constant duty cycle value for a modulated cutting mode also is provided. Depending on the operating mode selected, an RF generator adjusted to have a predetermined source impedance value provides a voltage value to the probe. During the duty-cycled mode, the RF generator generates an instantaneous voltage value output for a duty cycle portion that is less than 100% of a time period, which value is no less than a maximum continuous average voltage value for the electrosurgical probe. 1. Method of controlling a cutting operation for an electrosurgical cutting system including a control console , an RF generator , and an electrosurgical RF probe , the method comprising the steps of:connecting the RF probe associated with a memory device to the control console to provide probe-specific data stored in the memory device to a processing device in the control console, the probe data comprising a maximum continuous average voltage value and a constant duty cycle value of less than 100% and corresponding proportionally to a time period defined by a secondary frequency value, the processing device having a maximum instantaneous voltage value based on the probe data; andactuating the RF generator to output an instantaneous voltage value in a range that is not less than approximately the maximum average voltage value and that is not greater than approximately the maximum instantaneous voltage value to the RF probe to cut tissue during the constant duty cycle value which comprises a first portion of the time period, and wherein no voltage value ...

VOLTAGE RAMP-UP PROTECTION

Systems and methods for voltage ramp-up protection. In an illustrative, non-limiting embodiment, a method may include monitoring at least one of a first node or a second node, the first node configured to receive a first voltage greater than a second voltage present at a second node, and, in response to a slew rate of the first voltage creating a sneak condition between the first node and the second node, counteracting the sneak condition. For example, the sneak condition may favor an excess current to flow from the first node to the second node. In some cases, counteracting the sneak condition may include maintaining the second voltage below at or below a predetermined value. 1. An integrated circuit , comprising:a voltage clamping circuit operably coupled to a voltage reference circuit, the voltage reference circuit configured to receive a first voltage at a first node and to output a second voltage smaller than the first voltage at a second node, the voltage reference circuit including a first amplifier having a propagation delay incommensurate with a slew rate of the first voltage, the voltage clamping circuit including a second amplifier having a first input coupled to receive a predetermined voltage and a second input coupled to the second node, the second amplifier configured to receive a biasing current proportional to an excess current flow from the first node to the second node, an output of the second amplifier configured to drive the second node to reduce a value of the second voltage in response to the slew rate of the first voltage triggering a sneak condition between the first and second nodes.2. The integrated circuit of claim 1 , wherein the sneak condition comprises an electrical path tending to allow the excess current to flow from the first node to the second node.3. (canceled)4. The integrated circuit of claim 1 , wherein the voltage reference circuit is a bandgap circuit.57-. (canceled)8. The integrated circuit of claim 1 , wherein the second ...

ELECTROSURGICAL SYSTEM FOR COMMUNICATING INFORMATION EMBEDDED IN AN AUDIO TONE

An electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator including a computer having one or more microprocessors in operable communication with memory for storing information pertaining to the electrosurgical generator. An audio output module is in operable communication with the computer and configured to generate an audio output having the information pertaining to the electrosurgical generator embedded therein. A speaker is in operable communication with the audio output module for outputting the audio output. A recording device is configured to record the audio output. An audio collector is configured to receive the audio output from the recording device and decipher the embedded audio so that the information pertaining to the electrosurgical generator may be utilized for future use. 119-. (canceled)20. An electrosurgical generator comprising:a memory configured to store data pertaining to the electrosurgical generator;a processor in operable communication with the memory;an audio output module coupled to the processor and configured to generate an audio signal encoding the data;a speaker coupled to the audio output module and configured to output the audio signal; andan audio collector configured to receive the audio signal and decode the data encoded in the audio signal.21. The electrosurgical generator according to claim 20 , wherein the audio output module is further configured to encrypt the audio signal.22. The electrosurgical generator according to claim 21 , the audio collector is configured to decrypt the encrypted audio signal.23. The electrosurgical generator according to claim 20 , wherein the data is selected from the group consisting of date and time of an electrosurgical procedure claim 20 , activation time of the electrosurgical generator claim 20 , type of an electrosurgical instrument connected to the electrosurgical generator claim 20 , serial number of the electrosurgical generator claim 20 , ...

TREATMENT SYSTEM

A treatment system comprises a first power supply apparatus and a second power supply apparatus each connectable with a surgical device and a neutral electrode, the first power supply apparatus being electrically connected with the second power supply apparatus, the treatment system treating a living tissue while performing transmission and reception of information between the first and second power supply apparatuses, wherein, in a case where the neutral electrode is connected to only one of the first and second power supply apparatuses, an output of the surgical device connected to the second power supply apparatus is inhibited during an output of the surgical device connected to the first power supply apparatus, and the output of the surgical device connected to the first power supply apparatus is inhibited during the output of the surgical device connected to the second power supply apparatus. 1. A treatment system comprising: a first power supply apparatus configured to be connectable with a first electric surgical device and a first neutral electrode; and a second power supply apparatus configured to be connectable with a second electric surgical device and a second neutral electrode , in which the first power supply apparatus and the second power supply apparatus are electrically connected with each other through a connector section and a living tissue is treated while transmission and reception of information is performed between the first power supply apparatus and the second power supply apparatus through a communication section ,wherein the first power supply apparatus comprises:a first high-frequency power supply section that supplies high-frequency current to the first electric surgical device based on a first operation instruction signal;a first detecting section that detects whether the first neutral electrode is connected or not; anda first control section that controls the first power supply apparatus,wherein the second power supply apparatus ...

Monopolar electrosurgical instrument, electrosurgical system, and method for producing an electrosurgical instrument

A monopolar electrosurgical instrument and electrosurgical system for treating biological tissue by a plasma. The instrument includes a tubular line for conducting a gas to the treatment location, wherein the line consists of electrically insulating material and has a distal opening for the exit of the gas in the direction of the tissue to be treated, and an electrode arranged in the region of the distal opening in the line, wherein the electrode is connectable to an electrosurgical generator to ignite a plasma discharge in the gas. Improving the ignition behavior, the inner surface of the line has an enhanced electrical conductivity in the distal opening. Furthermore, a method for producing an electrosurgical instrument for providing a line made of nonconductive material, an electrode, and enhancing the conductivity of an inner surface of the line in the region of the opening, for enhancing the conductivity in the line.

Electrosurgical Systems and Methods of Configuring the Same

Example embodiments relate generally to electrosurgical systems configurable to perform an electrosurgical action (e.g., coagulation) on a target area, and methods of configuring the same. In an exemplary embodiment, the electrosurgical system may comprise an electrosurgical instrument. The electrosurgical instrument may have a first conductive member and a second conductive member. The electrosurgical may further comprise an arrangement of a capacitive element (C), a first inductive element (L), and a second inductive element (L). The electrosurgical system may further comprise an input AC voltage source. The input AC voltage source may be configurable top provide an input AC voltage signal. The AC voltage signal may be configurable to have a selected switching frequency (f) and a selected peak voltage value. The switching frequency (f) may be selected based on a desired V-R characteristic for the target area. 1. A method of configuring an electrosurgical system , the method comprising:identifying a target area;obtaining a desired V-R characteristic for the target area, the desired V-R characteristic including a plurality of possible electrical resistance values for the target area and a corresponding voltage value to be applied to the target area for each of the possible electrical resistance values; an input AC voltage source;', 'an electrosurgical instrument having a first conductive member and a second conductive member; and', {'sub': r', 'r', 'r', 'm', 'r', 'm', 'r', 'r', 'r, 'an arrangement of a capacitive element (C) electrically connected to the input AC voltage source, a first inductive element (L) electrically connected to the capacitive element (C), and a second inductive element (L) electrically connected to the first inductive element (L), wherein the first and second conductive members of the electrosurgical instrument are electrically connected to the second inductive element (L) in a parallel arrangement, and wherein a resonant frequency (f) of the ...

Spark Ablation Device

A spark ablation device for generating nanoparticles comprising a spark generator; the spark generator comprising first and second electrodes, wherein the spark generator further comprises at least one power source which is arranged to be operative at a first energy level for maintaining a discharge between the first and second electrodes, which power source is arranged for repetitively increasing the energy of the discharge to a predetermined secondary level that is higher than the first energy level for ablating a portion of the electrodes. 1. A spark ablation device for generating nanoparticles comprising a spark generator; the spark generator comprising first and second electrodes and at least one power source which is arranged to be operative for maintaining a discharge between the first and second electrodes , wherein the power source is configured for repetitively and intermittently varying its power output between a first energy level wherein a substantially continuous discharge is maintained between the electrodes of the spark ablation device and a second energy level higher than the first energy level for ablating at least a portion of the electrodes.2. A spark ablation device according to claim 1 , wherein the at least one power source comprises a pulse generator for repetitively increasing the energy of the discharge.3. A spark ablation device according to claim 1 , wherein the first energy level is selected at a level insufficient to generate particles.4. A spark ablation device according to claims 1 , wherein the second energy level is selected at a level to unavoidably generate particles.5. A spark ablation device according to claim 1 , wherein the at least one power source comprises a continuous DC or AC power source claim 1 , supplemented with a source for pulsed power.6. A spark ablation device according to claim 1 , wherein the at least one power source comprises a current source or a voltage source.7. A spark ablation device according to claim 1 ...

URODYNAMIC DEVICE AND PROCEDURE

A method performed by a computer correlates vesicoelastic pressure data () with volume data and calculates vesicoelastic work performed by the bladder (), wherein the amount of vesicoelastic work performed by the bladder () is determined by calculating an area under said vesicoelastic pressure data () when said vesicoelastic pressure data () is correlated against the volume data. 140404346. A method performed by at least one processing device () and at least one memory device ( , , ) for analyzing data from a urodynamic study , the method comprising:{'b': 76', '78', '92', '20', '76', '78', '92', '40', '43', '46, 'determining pressure data (, , ) from said urodynamic study that represents a pressure of liquid inside a bladder () and storing said pressure data (, , ) in said memory device (, , );'}{'b': 20', '40', '43', '46, 'determining volume data from the urodynamic study that represents a volume of said liquid inside said bladder () and storing said volume data in said memory device (, , );'}{'b': 40', '76', '78', '92, 'using said processing device () to correlate said pressure data (, , ) with said volume data;'}{'b': 10', '12', '14', '20, 'determining vesicoelastic pressure data (, , ) that represents pressure exhibited by vesicoelastic forces in said bladder ()'}{'b': 10', '12', '14, 'correlating said vesicoelastic pressure data (, , ) with said volume data; and'}{'b': 40', '20', '20', '10', '12', '14', '10', '12', '14, 'calculating with said processing device () an amount of vesicoelastic work performed by said bladder (), wherein the amount of vesicoelastic work performed by the bladder () is determined by calculating an area under said vesicoelastic pressure data (, , ) when said vesicoelastic pressure data (, , ) is correlated against said volume data.'}240404346. The method performed by at least one processing device () and at least one memory device ( claim 1 , claim 1 , ) according to claim 1 , further comprising:{'b': 40', '20, 'calculating with said ...

ELECTROSURGICAL SYSTEM WITH SELECTIVE CONTROL OF ACTIVE AND RETURN ELECTRODES

Electrosurgical system with selective control of active and return electrodes. At least some of the illustrative embodiments are systems comprising an electrosurgical wand and an electrosurgical controller. The wand comprises a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand (one electrical lead electrically coupled to each electrode). The controller comprises a voltage generator and a control circuit coupled between the voltage generator and the electrodes of the wand. The control circuit is configured to: selectively electrically couple the active terminal singly and in combination to the electrodes of the wand; and selectively electrically couple the return terminal singly and in combination to electrodes of the wand. 1. A system comprising:an electrosurgical wand having a non-conductive support member and at least three electrodes, each of the at least electrodes having an individual electrical lead electrically coupled thereto, the electrical leads extending to a proximal end of the wand; and wherein a first electrode of the at least three electrodes protrudes from the end of the non-conductive support member, and at least a second and third electrode of the at least three electrodes are disposed on a side surface of the non-conductive support member; and a controller connector coupled to the electrical leads;', 'a voltage generator configured to generate voltage of varying amplitude, the voltage generator having an active terminal and a return terminal; and', 'a control circuit coupled between the controller connector and the voltage generator;', 'the control circuit configured to selectively electrically couple both the active terminal singly or in combination to any of the at least three electrodes and selectively electrically couple the return terminal singly or in combination to any remaining electrodes of the at least three ...