Ablation systems and methods of the present disclosure include a catheter including one or more image sensors. The one or more image sensors can facilitate, for example, positioning an ablation electrode at a treatment site of an anatomic structure and, additionally or alternatively, can facilitate controlling delivery of therapeutic energy to a treatment site of an anatomic structure.

A catheter for ablating cardiac tissue through irreversible electroporation, the catheter comprises a tubular outer shaft and an electrode assembly extending distally from the distal end of the outer shaft. The electrode assembly defines a distally located central hub portion and a plurality of splines each extending proximally from the central hub portion. The electrode assembly comprises a flexible circuit having a flex circuit hub and a plurality of flex circuit branches integrally formed with and extending proximally from the flex circuit hub, the flexible circuit further including an outwardly-facing ablation electrode including an ablation electrode hub portion located on the flex circuit hub, and a plurality of ablation electrode branches integrally formed with the ablation electrode hub portion, each of the ablation electrode branches extending proximally along a portion of a respective one of the flex circuit branches and terminating in an ablation electrode proximal end.

A high-frequency surgical device for treating a tissue surface, device having an electrode device, in which a first electrode is formed on a working surface intended for contact with the tissue, and having a high-frequency generator, to the one pole of which the first electrode can be connected for operation. The surgical device is wherein a second electrode is formed on the working surface which electrode can be connected to the same pole, wherein a control device is connected to this and is designed initially to connect the first electrode and then to switch on the second electrode.

The present invention provides a device for rejuvenating a region of skin or mucosal tissue, comprising: a pulsed electromagnetic frequency generator; a plurality of electrodes in communication with the pulsed electromagnetic frequency generator and an RF tissue diathermy device. The electrodes apply the pulsed electromagnetic power and the RF tissue diathermy to the tissue, heating it such that one portion of the region of mucosal tissue is maintained at a predetermined temperature range T.sub.1 while another portion of the region of mucosal tissue is at least temporarily maintained at predetermined temperature range T.sub.2.

The present invention is directed to a medical device for providing treatment to diseased tissue and cells. The medical device is configured to ablate a target tissue surface, optionally within a resection cavity, and further deliver a therapeutic that targets diseased (e.g., cancer) cells via a marker whose expression is upregulated by the ablation. The ablation directly kills diseased cells associated with the tissue surface. While some diseased cells evade direct ablation, those cells nevertheless upregulate certain cell surface markers in response to the ablation, even while other, healthy or normal cells do not upregulate expression of the marker in response to the ablation. Devices and methods disclosed herein are used to deliver a therapeutic that uses the upregulated cell surface marker to cause the death of those diseased cells.

Provided is a surgical electrode in which an end portion capable of emitting a high frequency has a surface treatment film that includes a first coating and a second film in the order mentioned. The first coating is formed by contacting a surface treatment agent (X) with or over the entirety or a part of the surface of the end portion at least, which surface treatment agent (X) contains at least an amino group-containing compound, and the second film is formed by contacting a surface treatment agent (Y) with a part or the entirety of the surface of the first coating, which surface treatment agent (Y) contains: a silicone resin (A); a compound (B) containing a metal element selected from titanium, platinum, rhodium and palladium; and an aromatic hydrocarbon-based solvent (C), and satisfies: (I) the content of the silicone resin is in a range of 90% by mass to 99.9% by mass with respect to a total solid mass of the silicone resin and the compound; and (II) a ratio (B.sub.M/A.sub.M) of a mass (B.sub.M) of the compound to a mass (A.sub.M) of the silicone resin is in a range of 0.001 to 0.111.

An electrosurgical device includes a handle and a shaft extending from the handle to define a distal end of the electrosurgical device. The electrosurgical device includes one or more electrical elements coupled to the shaft at the distal end of the electrosurgical device. The shaft is configured to bend and position the one or more electrical elements relative to the handle. The shaft includes an outer structure defining a passageway extending from the handle to the one or more electrical elements. The shaft includes one or more conductors extending through the passageway to transmit electrical signals from an electrosurgical generator to the one or more electrical elements. The one or more conductors form a coil configured to bend in response to a force that exceeds a threshold and to determine a bended shape for the shaft.

The disclosure provides various embodiments of catheters having articulable ends that can be used for various procedures. Embodiments of methods are also provided that can be performed with catheters in accordance with the present disclosure.

A medical device is provided that includes a hand piece, a heating power supply, and a therapy power supply. The hand piece includes a first electrode including a heater. The heating power supply selectively provides heating power to the heater. The therapy power supply selectively provides therapeutic power to the first electrode. The medical device is changeable between operating a first electrosurgical configuration and a second electrosurgical configuration. In the first electrosurgical configuration, the heating power supply provides the heating power to the heater to heat the first electrode and the therapy power supply provides the therapeutic power to the first electrode.

Ablation systems of the present disclosure facilitate the safe formation of wide and deep lesions. For example, ablation systems of the present disclosure can allow for the flow of irrigation fluid and blood through an expandable ablation electrode, resulting in efficient and effective cooling of the ablation electrode as the ablation electrode delivers energy at a treatment site of the patient. Additionally, or alternatively, ablation systems of the present disclosure can include a deformable ablation electrode and a plurality of sensors that, in cooperation, sense the deformation of the ablation electrode, to provide a robust indication of the extent and direction of contact between the ablation electrode and tissue at a treatment site.