An electrosurgical device coated an epoxy modified rigid silicone powder coating which includes a solvent-free hydroxyl functional solid phenyl silicone resin in the range of about 40% to about 60% parts per weight of the coating; a calcium metasilicate in the range of about 20% to about 40% parts per weight of the coating; an epoxy cresol novalac resin in the range of about 5% to about 15% parts per weight of the coating; an ultra-fine air micronized muscovite mica in the range of about 0% to about 10% parts per weight of the coating; a 60% active powder version of a methyl alkyl polysilaxane in the range of about 3% to about 7% parts per weight of the coating; a high temperature calcination of coprecipitated compound with manganese-copper-iron in the range of about 0% to about 10% parts per weight of the coating; an o-cresol novolac resin in the range of about 0.5% to about 3% parts per weight of the coating; and an acrylate copolymer in the range of about 0.5% to about 3% parts per weight of the coating. This coating is applied to the surfaces of an electrosurgical device minimize the build-up of charred tissue (i.e., eschar) on the surfaces of the electrosurgical device.

A high-frequency treatment tool for an endoscope includes: a sheath formed of a material having an insulation property; a shaft-shaped member formed of a material having conductivity and inserted to advance and retract in the sheath; and an electrode having a conduit line formed to jet forward a fluid supplied into the sheath, and connected to a distal end section of the shaft-shaped member. The electrode has an outer circumferential surface electrically connected to a contacted tissue to perform treatment, and an inner circumferential surface of the conduit line that faces the fluid when the fluid is supplied. An arithmetic average roughness of the outer circumferential surface is larger than an arithmetic average roughness of the inner circumferential surface, and the arithmetic average roughness of the inner circumferential surface is 0.1 m or less.

A device for creating an arteriovenous (AV) fistula includes a proximal base having a distal tapered end surface and a distal tip connected to the proximal base and movable relative to the proximal base. The distal tip has a proximal tapered end surface. A first heating assembly, including an energized heating element, is disposed on at least one of the distal tapered end surface and the proximal tapered end surface. A second heating assembly, comprising a passive non-energized heat spreader, is disposed on the other one of the distal tapered end surface and the proximal tapered end surface. The distal tapered end surface and the proximal tapered end surface are adapted to contact opposing sides of a tissue portion to create the fistula. The taper of the proximal tapered end surface matches the taper of the distal tapered end surface, so that the two surfaces match one another.

An electrosurgical instrument having a radiating tip portion capable performing tissue ablation using microwave energy and electroporation (e.g. non-thermal irreversible electroporation) in a minimally invasive manner. The electrosurgical instrument may be used to perform microwave ablation and electroporation separately (e.g. sequentially) or simultaneously. The radiating tip portion may be dimensioned to be suitable for insertion into a pancreas via a surgical scoping device, to provide a rapid and accurate alternative to known RF ablation techniques. By enabling tumours within the pancreas to be treated using a minimally invasive procedure, it may be a viable option to use ablation and/or electroporation treatment for both curative as well as palliative reasons.

Various exemplary devices, systems, and methods for multi-layer anti-stick coatings for surgical tools are provided. In general, a method of manufacturing a surgical tool includes forming, using plasma enhanced chemical vapor deposition with hexamethyldisiloxane as a precursor material, a first coating on a conductive tissue treating surface of the end effector and a second jaw component of the end effector, the first coating comprising a first material, wherein the first material is a first silicone material, and applying a second coating on top of the first coating on the first jaw component and the second jaw component, the second coating comprising a second material, wherein the coatings are effective to prevent tissue sticking to the jaws during an electrosurgical sealing procedure.

The related-art medical treatment instrument that allows radiation of a microwave from both electrodes has had one or more of the following various problems caused by the microwave radiation from the both electrodes. The various problems include, for example, (1) occurrence of scissoring (occurrence of sparks), (2) heat generation and radiation to a back side of a radiation surface in contact with the both electrodes, (3) inefficiency of the microwave radiation through use of a microwave splitter, (4) falling off of both antennas, (5) a weak gripping force, (6) difficulty in grabbing a thin tissue such as a membrane, and (7) a microwave radiation range being not able to be grasped easily. It has been confirmed that a configuration of a medical treatment instrument according to the present invention solves the one or more of the problems described above, and the present invention has been completed.

A coating is provided for use in an electro-cautery probe of a cauterization device to mask odors generated during a cauterization procedure. The coating is also provided to increase the longevity of the odor masking and prevent tissue charring.

In one aspect, the disclosure presents an electrosurgical instrument for performing haemostasis by radiating microwave energy from a distal tip, where conductive radiating electrodes are coated in an insulating non-stick material. In another aspect, the disclosure provides an electrosurgical instrument for performing haemostasis using radiofrequency or microwave electromagnetic energy, where a distal tip of the instrument comprises a conductive hollow needle for conveying fluid to or from a treatment site, wherein the hollow needle is electrically grounded.

An end-effector configured to grasp tissue is disclosed herein. The end-effector includes an ultrasonic blade configured to transfer ultrasonic energy to the tissue and a clamp arm. The clamp arm includes a clamp arm pad including an electrically conductive material and an electrically non-conductive material. The clamp arm pad is configured as an electrode of a radiofrequency energy circuit, wherein the electrode is configured to transfer radiofrequency energy through the tissue to a return electrode of the radiofrequency energy circuit, and wherein the electrically non-conductive material is configured to reduce the possibility of an electrical short between the electrically conductive material and the ultrasonic blade as the clamp arm pad degrades throughout the usable life of the end effector.

The present disclosure relates to a surgical electrode assembly comprising: an electrode device comprising electrodes; a manipulating device; an electrode driving device configured to drive the electrodes, the manipulating device comprising an actuation mechanism; an inner tube having an inner tube proximal portion at a proximal end thereof, an inner tube distal portion at a distal end thereof, and an inner tube bending portion therebetween, the inner tube bending portion having a curvature, such that the inner tube distal portion and the inner tube proximal portion are disposed at an angle to each other; an outer tube having an outer tube proximal portion at a proximal end thereof and an outer tube distal portion at a distal end thereof, and an outer tube connecting portion therebetween, wherein the outer tube connecting portion is adapted to the inner tube bending portion, such that when manipulating the manipulating device to cause the inner tube and the outer tube to move relative to each other, the outer tube connecting portion allows the inner tube bending portion of the inner tube and the outer tube to move relative to each other in the longitudinal direction without interfering of the inner tube bending portion of the inner tube with the outer tube proximal portion and the outer tube distal portion of the outer tube. The technical effect lies in that bending tubes are provided which can greatly improve the convenience of the surgical electrode assembly entering a human body channel, and the electrode assembly may not interfere with the instrument used in conjunction therewith.