An ultrapolar telescopic electrosurgery pencil that can be used in both monopolar and bipolar modes for cutting and coagulation. The ultrapolar telescopic electrosurgery pencil can operate at very low power levels (such as 15-20 Watts or less) to both cut and coagulate tissue thereby reducing patient risk and damage to tissue.

Described herein are methods and systems for performing a procedure for ovarian rebalancing. The methods and systems may be used in the treatment of polycystic ovary syndrome (PCOS). The systems and methods may also be useful in the treatment of infertility associated with PCOS.

A medical device includes a shaft including a distal end including a passive electrode that defines a central opening extending through the passive electrode, and an active electrode within the central opening. The active electrode is movable between at least an extended position in which the active electrode does not contact the passive electrode, and a retracted position in which the active electrode contacts the passive electrode.

An electrode assembly for an electrosurgical instrument includes a housing configured to operably receive a distal end of an electrosurgical instrument shaft, the housing encapsulating an insulative core sandwiched between a pair of return electrodes. The insulative core includes a slot defined about a periphery thereof configured to partially receive an active electrode. The active electrode and the pair of return electrodes are adapted to connect to opposite polarities of an electrosurgical generator. A tensioning mechanism is configured to tension the active electrode about the insulative core during assembly.

The electrosurgical instrument comprises a basic body configured as a hose or as a hollow rod on which an end piece is configured or into which an end piece is inserted. The end piece comprises a passage channel that comprises a narrowed section at its distal end. The electrode is held in a holder that comprises an extension surrounding the electrode. The extension is configured to extend through the narrowed section of passage channel up to the end surface such that it outcrops at the mouth opening of the narrowed section when the electrode is in the extended position. At this section of extension located at the mouth opening the electrode is connected with the extension.

Various aspects of the present disclosure are directed toward apparatuses, systems, and methods for electroporation ablation. The electroporation catheter may include an electrode assembly comprising one or more ablation electrodes configured to generate electric fields proximate to target tissue in response to a plurality of electrical pulse sequences delivered in a plurality of therapy sections, and one or more mapping electrodes configured to measure cardiac electrical signals. In some embodiments, the measured electrical signals are used to create an electro-anatomical map.

At least some embodiments of the present disclosures are directed to a hybrid electroporation ablation catheter. In some embodiments, the hybrid electroporation ablation catheter comprises a catheter shaft having a proximal end and an opposite distal end and an electrode assembly extending from the distal end of the catheter shaft and the electrode assembly comprising a plurality of energy-delivering electrodes. The electrode assembly is configured to be selectively operable in a plurality of different operation modes.

A system is configured to delivering radiofrequency power to the endometrial lining tissue of a uterine cavity, including modulating the delivered power so that a measured impedance of the endometrial lining tissue tracks a target impedance as a function of time, wherein the target tissue impedance is derived from a function that approximates a preferred endometrial lining tissue ablation impedance curve that is determined based upon a measured impedance of the endometrial lining tissue after RF power has been delivered for a predetermined initial time period.

Described embodiments include apparatus that includes a catheter and a tip electrode, at a distal end of the catheter, shaped to define a plurality of microelectrode apertures. The apparatus further includes at least one printed circuit board (PCB) disposed within a lumen of the catheter, and a plurality of microelectrodes coupled to the PCB and at least partly situated within the microelectrode apertures, the PCB being configured to carry signals from the microelectrodes. Other embodiments are also described.

The disclosed technology includes a medical probe comprising a tubular shaft having a proximal end and a distal end, the tubular shaft extending along a longitudinal axis. The medical probe further comprises an expandable basket assembly coupled to the distal end of the tubular shaft. The basket assembly includes a plurality of electrodes with each electrode of the plurality of electrodes having a lumen therethrough. The basket assembly further includes a plurality of spines extending along the longitudinal axis and configured to bow radially outward from the longitudinal axis when the expandable basket assembly is transitioned from a collapsed form to an expanded form. Each spine includes a proximal and a distal end and a strut passing through the lumen of an electrode. The strut includes a mechanical retainer disposed on the strut to prevent the electrode from sliding proximally or distally along a length of the spine.