Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.

Abstract: A containment bag assembly for extracting a tissue specimen comprises a bag having one or more segmenting wires, an outer tube comprising a proximal and distal end, a flexible ring configured to form a top opening of the containment bag, wherein the flexible ring comprises two ring subassemblies, each having a proximal and distal end, a flexible member positioned between and coupled to the distal ends of the two ring subassemblies, wherein, when the flexible member is in a collapsed position, the two ring subassemblies are in a collapsed position and the containment bag is configured to be stored within the outer tube, and wherein, when the flexible member is in an expanded position, the two ring subassemblies and the flexible member bias the top opening of the containment bag to an open position to enable placement of the tissue specimen within the containment bag.

Abstract: A generator is configured to output two or more waveforms at different frequencies. In particular, the generator is configured to provide an ultrasonic waveform, which may be suitable for driving a transducer of an ultrasonic surgical instrument, and electrosurgical radiofrequency energy, which may be suitable for electrosurgical instruments.

Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.

Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.

Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.

Abstract: A containment bag assembly for extracting a tissue specimen comprises a bag having one or more segmenting wires, an outer tube comprising a proximal and distal end, a flexible ring configured to form a top opening of the containment bag, wherein the flexible ring comprises two ring subassemblies, each having a proximal and distal end, a flexible member positioned between and coupled to the distal ends of the two ring subassemblies, wherein, when the flexible member is in a collapsed position, the two ring subassemblies are in a collapsed position and the containment bag is configured to be stored within the outer tube, and wherein, when the flexible member is in an expanded position, the two ring subassemblies and the flexible member bias the top opening of the containment bag to an open position to enable placement of the tissue specimen within the containment bag.

Abstract: A tissue segmentation device comprises segmenting wires, a grasper, an introducer tube that is shaped and sized to allow introduction of the segmenting wires and the grasper into a patient incision, a specimen bag configured to be deployed through the introducer tube and into the patient incision, at least one actuator positioned adjacent a proximal end of the introducer tube and coupled to proximal portions of the segmenting wires and the grasper, and wherein the at least one actuator is configured for manipulating the grasper to grasp a tissue specimen prior to or during tissue segmentation, wherein manipulation of the grasper further enables pulling the tissue specimen into the segmenting wires for segmentation, positioning the tissue specimen such that it contacts the segmenting wires, and/or enabling placement of the tissue specimen in the bag.

Abstract: A generator is configured to output two or more waveforms at different frequencies. In particular, the generator is configured to provide an ultrasonic waveform, which may be suitable for driving a transducer of an ultrasonic surgical instrument, and electrosurgical radiofrequency energy, which may be suitable for electrosurgical instruments.

Abstract: An electrosurgical generator includes a power supply configured to output a DC waveform, a current or voltage source coupled to the power supply and a power converter coupled to the current or voltage source, the power converter including at least one power switching element and a power inductor having an inductance value during switching of the at least one power switching element. The electrosurgical generator further includes a zero voltage switching (ZVS) inducing circuit coupled to the power converter at a switching node, the ZVS inducing circuit including an inductor having an inductance which is greater than the inductance value of the power inductor of the at least one power switching element.

Abstract: A generator is configured to output two or more waveforms at different frequencies. In particular, the generator is configured to provide an ultrasonic waveform, which may be suitable for driving a transducer of an ultrasonic surgical instrument, and electrosurgical radiofrequency energy, which may be suitable for electrosurgical instruments.

Abstract: A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller has a processing component, configured to assign a circuit status to a circuit comprising the at least one electrode. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is a power factor of power applied to the electrosurgical device. T is a threshold value.

Abstract: 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.

Abstract: An electronic device includes: a multilayered dielectric substrate including a plurality of dielectric layers; a planar magnetic device disposed on at least one internal dielectric layer of the plurality of dielectric layers; and an overlapping shield assembly including a first shield layer and a second shield layer separated by at least one of the plurality of dielectric layers.

Abstract: A system and method for return electrode monitoring are provided. The system includes an isolation circuit, a first controller, a second controller, and a detection circuit. The isolation circuit includes a transformer having a primary winding and a secondary winding. The first controller is coupled to the primary winding. The second controller and the detection circuit are coupled to the secondary winding. The detection circuit includes an interrogation signal circuit, a resonant tank filter, and a current-to-voltage converter. The interrogation signal circuit provides an interrogation signal to at least one electrode pad. The resonant tank filter filters a response signal received from the electrode pad. The current-to-voltage converter generates a voltage signal based on a current value of the response signal. The second controller generates a digital impedance value based on the voltage signal, and provides the digital impedance value to the first controller by way of the isolation circuit.

Abstract: An electronic device includes: a multilayered dielectric substrate including a plurality of dielectric layers; a planar magnetic device disposed on at least one internal dielectric layer of the plurality of dielectric layers; and an overlapping shield assembly including a first shield layer and a second shield layer separated by at least one of the plurality of dielectric layers.

Abstract: An electrosurgical generator includes a power supply configured to output a DC waveform, a current or voltage source coupled to the power supply and a power converter coupled to the current or voltage source, the power converter including at least one power switching element and a power inductor having an inductance value during switching of the at least one power switching element. The electrosurgical generator further includes a zero voltage switching (ZVS) inducing circuit coupled to the power converter at a switching node, the ZVS inducing circuit including an inductor having an inductance which is greater than the inductance value of the power inductor of the at least one power switching element.

Abstract: A controller for an electrosurgical device and related methods and devices are disclosed. The controller has a processing component to: (a) derive a power factor of power applied to the electrosurgical device; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the electrosurgical device. IF (PF?0) and ((Vrms/Irms)?T), THEN the circuit status is “open”. IF (PF?0) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. Vrms is the root mean square of a voltage associated with the power applied to the at electrosurgical device. Irms is the root mean square of a current associated with the power applied to the electrosurgical device. T is a threshold value.

Abstract: An electrosurgical generator includes: a power supply configured to output a direct current; an energy metering stage including at least one metering switching component operated by a metering switching waveform, the energy metering stage configured to generate a metered energy packet from the direct current; a power converter coupled to the energy metering stage, the power converter including at least one power switching element operated by a power switching waveform, the power converter configured to generate a radio frequency half cycle based on the metered energy packet; and a controller coupled to the power converter, the controller is configured to modulate the metering switching waveform and the power switching waveform.

Abstract: An electrosurgical generator includes: a power supply configured to output a DC waveform; a current or voltage source coupled to the power supply and configured to output current; and a power converter coupled to the current source. The power converter includes at least one power switching element operated at a switching waveform and configured to generate a radio frequency waveform based on the energy from the current or voltage source. The radio frequency waveform includes at least one pulse having an overshoot peak. The electrosurgical generator further includes a clipper circuit coupled to the current source and the power converter, the clipper circuit configured to generate a clipping voltage to clip the overshoot peak; and a controller coupled to the power converter and configured to modulate the switching waveform to generate the radio frequency waveform.