Abstract: An electrosurgical generator arranged to supply radio frequency (RF) energy to fuse tissue is provided. The generator is arranged to supply RF energy through a removably coupled electrosurgical instrument to fuse tissue grasped by the instrument. The generator monitors a phase angle of the supplied RF energy and adjusts or terminates the supplied RF energy based on the monitored phase angle in comparison to predetermined thresholds and conditions to optimally fuse the tissue. The electrosurgical instrument conducts radio frequency energy to fuse tissue captured between the jaws and a blade to mechanically cut tissue between the jaws. A conductive post positioned on the jaw adjacent to the blade.

Abstract: A surgical device is disclosed for cutting tissue, including for performing a capsulotomy of a lens capsule of an eye. This device includes a reversibly collapsible cutting element for cutting a portion of a capsule membrane of the eye. The cutting element includes an outer layer, an inner layer, and a bottom layer that has a higher electrical resistance than the electrical resistance of the outer layer and the inner layer. The bottom layer is configured to conduct an electrical current between the outer layer and the inner layer, which causes a temperature increase in the bottom layer for cutting tissue.

Abstract: Disclosed herein is a system for ablating and characterizing tissue. The system comprises an ablation element configured to emit ablative energy toward a tissue of interest, an imaging apparatus configured to emit energy and collect imaging data including reflected signals from the tissue of interest, and a characterization application. The characterization application comprises a signal analyzer for analyzing the imaging data and determining one or more signal properties from the reflected signals, and a correlation processor configured to associate the one or more signal properties to pre-determined tissue signal properties of different tissue components through a pattern recognition technique. The pre-determined tissue signal properties are embodied in a database, and the correlation processor is configured to identify a tissue component and an ablation level of the tissue of interest based on the pattern recognition technique.

Abstract: The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy.

Abstract: A tissue sensing device for use with an electrosurgical knife is proposed which comprises a proximal end portion, a distal end portion and a grip portion there between. The proximal end portion is configured for attachment to a housing of the electrosurgical knife. The distal end portion is configured for movably supporting a blade of the knife. A distal end of an optical fiber is arranged at the distal end portion of the device and a proximal end of the optical fiber is connectable to an optical console, so that optical measurements can be performed at the distal end portion.

Abstract: The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy.

Abstract: The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy.

Abstract: A surgical device which combines cautery and tissue debris conveyance via a combination of suction and an Archimedes screw, the cautery electrode encased within the Archimedes screw, the device comprising a device body housing a motor for rotating the screw, a cannula having an aperture for exposing an instrument, extending from the body portion, and a connector system operatively associated with the body portion, the connector system organized to provide pre-determined relative locations of connection for operably connecting the cannula, a cautery electrode and an Archimedes screw to the device body such the cautery electrode tip is positionable outside the aperture of the cannula and the Archimedes screw is disposed within the cannula in a position for conveying tissue entering the cannula via suction.

Abstract: 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.

Abstract: A method for ablating a patient, consisting of ascertaining a CHA2DS2-VASc score for the patient and inserting a probe into the patient, so as to contact a pulmonary vein of the patient. The method further includes applying energy via the probe so as to ablate the pulmonary vein until pulmonary vein isolation (PVI) is achieved. When PVI is achieved and the CHA2DS2-VASc score is less than a preset value, ablation of the pulmonary vein is ceased. When PVI is achieved and the CHA2DS2-VASc score is greater than or equal to the preset value, energy is applied to perform a further ablation.

Abstract: Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable member may be coupled to the catheter shaft. The expandable member may be capable of shifting between a folded configuration and an expanded configuration. A plurality of flexible elements may be attached to the expandable member, with a plurality of electrode assemblies disposed on the flexible elements. The flexible elements may have a grooved substrate.

Abstract: In one embodiment, a medical system includes a catheter configured to be inserted into a body part of a living subject, and including a deflectable element having a distal end, an expandable distal end assembly disposed at the distal end of the deflectable element, and comprising a plurality of electrodes, a distal portion, and a proximal portion, and configured to expand from a collapsed form to an expanded deployed form, and a stretchable irrigation tube disposed between the distal portion and the proximal portion, and comprising a plurality of irrigation holes, and configured to stretch longitudinally when the distal end assembly is collapsed from the expanded deployed form to the collapsed form.

Abstract: Aspects of the present disclosure are presented for a surgical instrument for cutting and sealing tissue. In some embodiments, the surgical instrument includes a handle assembly, a shaft, and an end effector. The end effector may include: a blade that vibrates at an ultrasonic frequency, a shielded portion enclosing a back edge of the blade, a high-friction surface coupled to the shielded portion and positioned between the shielded portion and the back edge of the blade. A space is defined between the high-friction surface and the back edge of the blade when the end effector is in a cutting configuration. In a sealing configuration, the high-friction surface contacts the back edge of the blade, which generates heat based on ultrasonic vibrations of the blade rubbing against the high-friction surface. The shielded portion can coagulate bleeding tissue based on heat transfer from the high-friction surface to the shielded portion.

Abstract: In general, surgical devices including visual indicators thereon are provided. A user of the device therefore may quickly visually ascertain various operational details of the surgical device and/or various pieces of information about the device and/or tissue of a patient being operated on.

Abstract: A medical device is disclosed. The medical device comprises a bipolar forceps including a jaw assembly. The jaw assembly comprises a first jaw body; a second jaw body; and a sealing plate. A therapy current can be passed between the sealing plate and the first jaw body. The therapy current can be restricted from passing between the first jaw body and the second jaw body. The therapy current can be restricted from passing between the sealing plate and the second jaw body.

Abstract: An apparatus includes a flexible electrically-insulating substrate including an inner surface and an outer surface. The substrate is shaped to define multiple channels passing between the inner surface and the outer surface, at least some of the channels being concave channels. The apparatus further includes an outer layer of an electrically-conducting metal covering at least part of the outer surface, an inner layer of the electrically-conducting metal covering at least part of the inner surface, and respective columns of the electrically-conducting metal that fill the channels such as to connect the outer layer to the inner layer.

Abstract: A system to be used inside a dialysis unit for dilating obstructed blood vessel, comprises a catheter, a device, a remote-control box, supportive components and connection cables. A catheter comprises an elongated portion, a proximal end and a distal end, extended longitudinally. A distal end of a catheter has a convectively heating tip with a heat generating element and an inflatable balloon. A device has a radiofrequency current generator to supply and control a heating process of a heat generating element of a catheter tip. A remote-control box comprises a valve assembly, a heat activation switch and a balloon inflation switch to facilitate a treatment process.

Abstract: An apparatus includes a catheter shaft assembly and an end effector. The catheter shaft assembly includes an outer sheath with a distal end. The end effector is associated with a distal end of the catheter shaft assembly. The end effector includes a plurality of leaflets. The leaflets are configured to transition between a first configuration and a second configuration. The leaflets are configured to fit within the outer sheath in the first configuration. The leaflets are configured to expand outwardly away from the longitudinal axis in the second configuration in response to being exposed distally relative to the distal end of the outer sheath. Each leaflet includes a flexible body and a plurality of electrodes. Each flexible body defines a plurality of openings. The electrodes are positioned on the flexible body.

Abstract: A medical apparatus includes a probe configured for insertion into a body of a patient. The probe includes a plurality of electrodes configured to contact tissue within the body. The medical apparatus further includes an electrical signal generator configured to apply between one or more pairs of the electrodes signals of first and second types in alternation. The signals of the first type include a sequence of bipolar pulses having an amplitude sufficient to cause irreversible electrophoresis (IRE) in the tissue contacted by the electrodes. The signals of the second type include a radio-frequency (RF) signal having a power sufficient to thermally ablate the tissue contacted by the electrodes.

Abstract: The subject of this disclosure is devices, systems, and uses thereof to treat a plurality of patients for paroxysmal atrial fibrillation. The solution can include delivering a multi-electrode radiofrequency balloon catheter and a multi-electrode diagnostic catheter to one or more targeted pulmonary veins; ablating tissue of the one or more targeted pulmonary veins using the multi-electrode radiofrequency balloon catheter; diagnosing the one or more targeted pulmonary veins using the multi-electrode diagnostic catheter; and achieving at least one of a predetermined clinical effectiveness and acute effectiveness of the method or use based on use of the multi-electrode radiofrequency balloon catheter and the multi-electrode diagnostic catheter in the isolation of the one or more targeted pulmonary veins.