Methods and systems for conditioning a signal indicative of electrosurgical unit activity are described. A hardware circuit acquires AC current from an electrosurgical unit on patient isolated circuitry and conditions the signal in either of two alternate processing methods. The processed signal is routed as input to an analog to digital converter circuit. A method for determining saturation on referential inputs and recovering inputs to an unsaturated state is also described.

Disclosed herein is an RF ablation system including a plurality of electrodes, a ground pad, and a signal generator. The electrodes are positioned at respective tissue sites within a patient's body, and the ground pad is positioned on the patient's body. The signal generator is coupled to the ground pad and the electrodes via corresponding channels including a selected channel and unselected channels. The signal generator commutates switching circuits for the corresponding channels to close the selected channel and to open the unselected channels, and measures a first impedance over the selected channel. The signal generator commutates the switching circuits to close the selected channel and the unselected channels, and then measures a second impedance. The signal generator computes a difference between the first and second impedances, and determines the ground pad has at least a poor electrical connection to the patient's body when the difference exceeds a threshold.

The present disclosure provides electroporation systems, methods of controlling electroporation systems to limit electroporation arcs through intracardiac catheters, and catheters for electroporation systems. One method of controlling an electroporation system including a direct current (DC) energy source, a return electrode connected to the DC energy source, and a catheter connected to the DC energy source is disclosed. The catheter has a at least one catheter electrode. The method includes positioning the return electrode near a target location within a body and positioning the catheter electrode adjacent the target location within the body. A system impedance is determined with the return electrode positioned near the target location and the catheter electrode positioned within the body. The system impedance is adjusted to a target impedance to arcing from the catheter electrode.

Systems and methods for performing and assessing neuromodulation therapy are disclosed herein. One method for assessing the efficacy of neuromodulation therapy includes positioning a neuromodulation catheter at a target site within a renal blood vessel of a human patient and delivering neuromodulation energy at the target site with the neuromodulation catheter. The method can further include obtaining a measurement related to a blood flow rate through the renal blood vessel via the neuromodulation catheter. The measurement can be compared to a baseline measurement related to the blood flow rate through the renal blood vessel to assess the efficacy of the neuromodulation therapy. In some embodiments, the baseline and post-neuromodulation measurements are obtained by injecting an indicator fluid into the renal blood vessel upstream of the target site and detecting a transient change in vessel impedance caused by the indicator fluid.

An electrosurgical device: (a) power cable comprising: (i) a primary lead that connects to a first pole of an AC power source and (ii) one or more auxiliary leads; wherein the power cable includes a dual core having the primary lead on a first side and the one or more auxiliary leads on a second side with a web being located between the first side and the second side.

Devices, systems and methods are provided for treating conditions of the reproductive tract. A number of conditions can afflict the lining and cell layers deeper within the anatomical structures. For example, cervical intraepithelial neoplasia (CIN), also known as cervical dysplasia, is a condition involving abnormal growth of cells on the surface of the cervix that could potentially lead to cervical cancer in situ (CIS). Other conditions include human papillomavirus (HPV)-related cervical disease, various endometrial diseases, acute and chronic cervicitis, and various infections (e.g. trichomoniasis) to name a few. In some embodiments, treatments eliminate diseased, damaged, abnormal or otherwise undesired cells leaving the tissue framework intact. This allows the tissue to regenerate in a normal fashion, avoiding the formation of scar tissue. When the tissue framework is left intact, the framework structure repopulates with healthy cells, regenerating the normal tissue without altering the structural properties.

An elongate medical device shaft may comprise an elongate body and an annular electrode disposed on the elongate body. The annular electrode may define a longitudinal axis and have an outer diameter. The outer diameter may be greater at an axial center of the electrode than at an axial end of the electrode. Additionally or alternatively, the elongate body may comprise three longitudinal sections having three wall thicknesses. The middle wall thickness may be less than the proximal and distal wall thicknesses and the distal wall thickness may be less than the proximal wall thickness. Additionally or alternatively, the shaft may comprise an inner cylindrical structure and an outer tube. The outer tube may comprise a first radial layer and a second radial layer that is radially-outward of the first radial layer, the first radial layer, second radial layer, and inner structure having different stiffnesses.

The disclosed technology includes a medical probe comprising a tubular shaft extending along a longitudinal axis of the medical probe. The medical probe further comprises an expandable basket assembly coupled to the distal end of the tubular shaft. The basket assembly comprises a plurality of spines and a plurality of electrodes. The electrode comprises an electrode body that defines a lumen therethrough such that the respective spine extends through the lumen. The respective electrode body comprises two sections that define a lengthwise direction of the electrode body section that are inclined inward with respect to a central axis of the respective electrode.

The disclosed technology includes a medical probe comprising a tubular shaft extending along a longitudinal axis of the medical probe. The medical probe further comprises an expandable basket assembly coupled to the distal end of the tubular shaft. The basket assembly comprises a plurality of spines and a plurality of electrodes. The electrode comprises an electrode body that defines a lumen therethrough such that the respective spine extends through the lumen. The basket assembly comprises an electrically insulative jacket disposed between each respective spine and each respective electrode. Each electrode body and electrically insulative jacket comprises a substantially circular cross-sectional shape.

The disclosed technology includes an expandable basket assembly for a medical probe, which may include a single unitary structure including a plurality of spines converging at a central spine intersection. The central spine intersection being positioned on a longitudinal axis of the expandable basket assembly at a distal end thereof. The single unitary structure may include a plurality of radial cutouts with each radial cutout defining an opening in each of the plurality of spines proximate the central spine intersection so that each opening extends for a length along each spine away from the central spine intersection.