An electrosurgical instrument includes an end effector having first and second jaws defining an electrically conductive gap setting member configured to maintain a gap between energy delivery surfaces of the first and second jaws. The first jaw comprises a first energy delivery surface, a first body, a first distal end, a first proximal end, and a first electrically conductive member protruding from the first body at the first distal end. The second jaw comprises a second energy delivery surface further comprising an aperture, a second body, a second distal end, a second proximal end, and a second electrically conductive member protruding from the second body at the second distal end. The second jaw further comprises an electrically insulative member extending through the aperture. At least one electrically conductive gap setting member is configured to maintain a gap between energy delivery surfaces of the first and second jaw.

A device for cold plasma endoscopy may include a cold plasma generating system, a catheter and electrically conductive means. The cold plasma generating system includes a gas source, an electrical source, a dielectric chamber, a first electrode surrounding the dielectric chamber and electrically connected to the electrical source. The catheter has a first lumen for carrying the cold plasma fluidly connected to the dielectric chamber at a proximal end and having an opening at a distal end for delivering the cold plasma. The electrically conductive means extend inside the first lumen. The electrical source is configured to apply a pulsed excitation signal to the first electrode. The device includes remotely actuated deployable confinement means for creating a confined space, wherein the opening of the first lumen is arranged in the confined space, the deployable confinement means allowing for confining the plasma substantially within the confined space.

A surgical clip applier is disclosed which is configured to automatically feed a clip from a clip cartridge once the surgical clip applier is positioned in the patient.

A bipolar forceps may include a first forceps arm having a first forceps arm aperture, a first forceps jaw, and a first forceps arm conductor tip; a second forceps arm having a first forceps arm aperture, a second forceps jaw, and a second forceps arm conductor tip; and an input conductor isolation mechanism having a first forceps arm housing and a second forceps arm housing. The first forceps arm may be disposed in the first forceps arm housing and the second forceps arm may be disposed in the second forceps arm housing. An application of a force to a lateral portion of the forceps arms may be configured to close the forceps jaws. A reduction of a force applied to a lateral portion of the forceps arms may be configured to open the forceps jaws.

A treatment instrument includes a probe including a treatment portion which treats a treatment target part by ultrasonic vibration, and a back portion provided on a side opposite to the treatment portion. The treatment instrument includes a hollow sheath which surrounds the probe, the sheath having a cutout made to expose the treatment portion. The treatment instrument includes protrusion which is provided in the sheath to cover the back portion on a side opposite to the cutout and which has dimensions smaller than the dimensions of the probe in a direction that intersects with a central axis of the probe.

A microneedling system may reciprocate a plurality of microneedles disposed on a handpiece into the skin of a patient. The handpiece may have a plurality of positive and negative electrodes in the form of microneedles or surface electrodes arranged across an array. The microneedles and/or electrode plates may deliver RF energy to the patient for inducing collagen coagulation and regeneration. The electrodes may be arranged such that each electrode is positioned adjacent a closest electrode of opposite polarity. There may be an uneven number of positive and negative electrodes. Central electrodes may be surrounded by at least three adjacent closest electrodes of opposite polarity. The electrodes may be arranged in a hexagonal or other polygonal manner. The electrodes may be arranged to provide uniform distribution of energy, heating, and effectively to some extent damage the entire discrete area that encloses the positive and negative electrodes.

An apparatus includes a shaft assembly and an electrode assembly at a distal end of the shaft assembly. The electrode assembly includes a first conductive segment extending along a first angular range at the distal end of the shaft assembly. The first conductive segment is operable to apply RF energy to tissue at a first polarity. The electrode assembly further includes a second conductive segment angularly spaced apart from the first conductive segment. The second conductive segment extends along a second angular range at the distal end of the shaft assembly. The second conductive segment is operable to apply RF energy to tissue at a second polarity such that the first and second conductive segments are operable to apply bipolar RF energy to tissue.

A catheter apparatus includes an elongated deflectable element including a distal end, a coupler connected to the distal end, a pusher including a distal portion, and configured to be advanced and retracted through the deflectable element, and an expandable assembly including flexible polymer circuit strips, each strip including electrodes disposed thereon. The strips can be configured to bow radially outward when the pusher is retracted expanding the expandable assembly from a collapsed form to an expanded form. A covering can at least partially enclose the flexible polymer circuit strip and the multiple electrodes. The covering can include a plurality of apertures at each electrode so that a portion of the conductive surface of each electrode is exposed through each aperture.

An endoscope includes a handle including a handle housing, an irrigation inlet port adapted to receive irrigation fluid, and an irrigation channel; and an insertion cord extending distally from the handle. The insertion cord includes an insertion tube; a bending section extending from the insertion tube; a distal tip extending from the bending section and including a tip housing; a camera at least partially enclosed in the tip housing; interstitial space within the insertion tube in fluid communication with the irrigation channel; and at least one interstitial flow opening in fluid communication with the interstitial space and adapted to discharge the irrigation fluid.

A catheter having a basket-shaped electrode assembly at the distal end of the catheter body formed from a plurality of spines with electrodes. The plurality of spines are formed by a framework which is prestrained to have a diameter greater than the diameter of the expanded arrangement of the basket-shaped electrode assembly and a length less than the length of the expanded arrangement of the basket-shaped electrode assembly.