Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.

Abstract: An electrosurgical system includes an electrosurgical power generating source, an energy applicator operably associated with the electrosurgical power generating source, a processor unit, and a data acquisition module configured to receive a reflected signal. The processor unit is disposed in operative communication with the data acquisition module and adapted to determine a tissue desiccation rate around at least a portion of the energy applicator based on one or more signals received from the data acquisition module.

Abstract: A method of manufacturing a printed circuit board includes the steps of providing a first layer stack including a first electrically-conductive layer and a first electrically-insulating layer and providing a second layer stack including a second electrically-insulating layer. The first electrically-conductive layer is disposed on the first surface of the first electrically-insulating layer. The second electrically-insulating layer includes one or more electrically-conductive traces disposed on a first surface thereof. The method also includes mounting a device on the first surface of the second electrically-insulating layer such that the device is electrically-coupled to at least one of the one or more electrically-conductive traces, and providing the first layer stack with a cut-out area defining a void that extends from the second surface of the first electrically-insulating layer to the first surface of the first electrically-conductive layer.

Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.

Abstract: A system includes a treatment probe, a first tracking sensor configured to track a location of the treatment probe, an ultrasound imager, a second tracking sensor configured to track a location of the ultrasound imager, and a tracking system. The ultrasound imager generates real-time ultrasound images. The tracking system receives location information from the first and second tracking sensors, tracks the location of the treatment probe and the location of the ultrasound imager, and displays the real-time ultrasound images and a representation of the treatment probe in one or more pre-stored images.

Abstract: A method of manufacturing a printed circuit board includes the initial steps of providing a first layer stack and providing a second layer stack. The first layer stack includes a first electrically-insulating layer. The first electrically-insulating layer includes a first surface and one or more electrically-conductive traces disposed on the first surface. The second layer stack includes a second electrically-insulating layer and a first electrically-conductive layer. The second electrically-insulating layer includes a first surface and an opposite second surface. The first electrically-conductive layer is disposed on the first surface of the second electrically-insulating layer. The second layer stack further includes a cut-out area defining a void that extends therethrough.

Abstract: A system is provided. The system includes an electrosurgical generator configured to measure, collect and record data pertaining to a characteristic of tissue as the tissue is being electrosurgically treated. A tuner configured to couple to the electrosurgical generator includes a tuning circuit providing a load having a variable complex impedance for the electrosurgical generator when the electrosurgical generator is connected thereto. A controller including stored data pertaining to impedance values is in operable communication with the electrosurgical generator for retrieving the recorded data pertaining to the characteristic of tissue. The controller is in operable communication with the tuner for varying a complex impedance of the load. The controller configured to compare the recorded data pertaining to the at least one characteristic of tissue with the stored data pertaining to the plurality of impedance values and to adjust the tuner to one of the plurality of impedance values.

Abstract: An end effector assembly includes a pair of opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a microwave antenna assembly and a shielding member including a metallic plate coupled to ground and a dielectric material. The end effector assembly also includes a splitter configured to receive an active signal from a source of microwave energy and split the active signal into a first signal transmitted to the microwave antenna assembly in one of the jaw members and a second signal transmitted in the microwave antenna assembly in the other jaw member.

Abstract: A system for reducing radiated emissions the system including a microwave generator that supplies microwave energy at a fundamental frequency, a coaxial transmission cable that transmits microwave energy between the microwave generator and a microwave energy delivery device and an isolation apparatus connected between the microwave generator and the coaxial transmission cable. The isolation apparatus is configured to electrically isolate the coaxial transmission cable from the microwave generator and capacitively couple the microwave generator ground to the coaxial transmission cable.

Abstract: An AC active load device for use with a generator and a controller to supply a variable impedance when supplied with an AC waveform. The AC active load device uses a transformer and one or more transistors to generate an average max load impedance greater than 1000 ohms over varying voltage levels. The transistor functions as a dynamically-controlled resistor to the generator when the generator supplies the AC voltage to the transformer. The transistors may be GaN FETs or LDMOSFETs. The transformer steps down a voltage supplied by a generator to a voltage below the threshold voltage of the transistors. A control voltage is supplied to the gate of the transistors and may be controlled by a controller. A voltage and current are outputted to the controller from the AC active load device. The AC active load device may be used to calibrate the generator.

Abstract: A system is provided. The system includes an electrosurgical generator configured to measure, collect and record data pertaining to a characteristic of tissue as the tissue is being electrosurgically treated. A tuner configured to couple to the electrosurgical generator includes a tuning circuit providing a load having a variable complex impedance for the electrosurgical generator when the electrosurgical generator is connected thereto. A controller including stored data pertaining to impedance values is in operable communication with the electrosurgical generator for retrieving the recorded data pertaining to the characteristic of tissue. The controller is in operable communication with the tuner for varying a complex impedance of the load. The controller configured to compare the recorded data pertaining to the at least one characteristic of tissue with the stored data pertaining to the plurality of impedance values and to adjust the tuner to one of the plurality of impedance values.

Abstract: An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator.

Abstract: An electrosurgical system for treating tissue is disclosed. The system includes an electrosurgical generator, a printed circuit board, a generator ground and a patient ground. The printed circuit board is disposed in mechanical cooperation with the electrosurgical generator and includes a plurality of conductive layers. The generator ground includes a first portion and a second portion. The first portion is electro-mechanically connected to a conductive layer of the printed circuit board and the second portion is electro-mechanically connected to another conductive layer of the printed circuit board. The patient ground includes a portion that is at least partially interposed between the first portion of the generator ground and the second portion of the generator ground.

Abstract: A printed circuit board includes a first layer stack and a second layer stack coupled to the first layer stack. The first layer stack includes a first electrically-insulating layer, a first electrically-conductive layer, and a cut-out area defining a void that extends therethrough. The first electrically-insulating layer includes a first surface and an opposite second surface. The first electrically-conductive layer is disposed on the first surface of the first electrically-insulating layer. The second layer stack includes a second electrically-insulating layer. The second electrically-insulating layer includes a first surface and an opposite second surface. One or more electrically-conductive traces are disposed on the first surface of the second electrically-insulating layer. The printed circuit board further includes a device at least partially disposed within the cut-out area.

Abstract: An electrosurgical system for performing an electrosurgical procedure is provided and includes an electrosurgical generator and a calibration computer system. The electrosurgical generator includes one or more processors and a measurement module including one or more log amps that are in operative communication with the processor. The calibration computer system configured to couple to a measurement device and is configured to measure parameters of an output signal generated by the electrosurgical generator. The calibration computer system is configured to compile the measured parameters into one or more data look-up tables and couple to the electrosurgical generator for transferring the data look-up table(s) to memory of the electrosurgical generator. The microprocessor is configured to receive an output from the log amp(s) and access the data look-up table(s) from memory to execute one or more control algorithms for controlling an output of the electrosurgical generator.

Abstract: An electrosurgical generator includes an RF output stage, a DC blocking capacitor, a measuring circuit, and a sensor circuit. The RF output stage generates electrosurgical energy for application to an active electrode. The DC blocking capacitor is electrically coupled between the RF output stage and the active electrode. The measuring circuit is coupled to the DC blocking capacitor and measures the voltage across the DC blocking capacitor. The sensor circuit determines the current of the electrosurgical energy as a function of the voltage across the DC blocking capacitor.

Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.

Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.

Abstract: A system includes a microwave signal generator and a medical device. The medical device includes a handle assembly, a microwave-signal-amplifying module, and a probe. The microwave-signal-amplifying module includes a microwave amplifier unit. The microwave amplifier unit is adapted to amplify a high-frequency input signal to generate a high-frequency output signal. The microwave amplifier unit is disposed within the handle assembly. The probe extends distally from the distal end of the handle assembly and is operably coupled to an output of the microwave-signal-amplifying module.

Abstract: A medical device includes a handle assembly and a probe-and-amplifier assembly. The handle assembly includes a handle body defining a chamber therein. The probe-and-amplifier assembly includes a probe and a microwave amplifier unit. The probe extends distally from the distal end of the handle assembly. The microwave amplifier unit is disposed within the chamber. The microwave amplifier unit and the probe are mechanically coupled to one another to form a unitary body. The probe-and-amplifier assembly is selectively removable from the handle assembly.