Abstract: This treatment portion of a medical energy device treats a biological tissue by transferring energy to the biological tissue, in a state where the treatment portion is in contact with the biological tissue. The treatment portion of the medical energy device includes a main body portion and a covering film. The main body portion transfers energy to the biological tissue. The covering film contains silicone as a main component, and covers the surface of the main body portion. The silicone includes at least a D unit and a T unit. In the silicone, the molar ratio of silicon atoms forming the D unit with respect to all the silicon atoms is 40-99%. In the silicone, the molar ratio of methyl functional groups bonded to the silicon atoms with respect to all functional groups bonded to the silicon atoms is at least 60%.

Abstract: This adhesion prevention film for medical devices is a single-layer or multilayer adhesion prevention film that is formed on the surface of a medical device. This adhesion prevention film for medical devices comprises an outermost layer that contains a plurality of conductive particles and a resin having a continuously usable temperature of 200° C. or higher. The surface of the outermost layer is provided with recesses and projections by having parts of the plurality of conductive particles exposed from the resin.

Abstract: A wire for a medical device includes a wire body and a solid lubrication film. The wire body has an outer circumferential layer formed of a plurality of metal strands that are twisted with each other. The solid lubrication film is formed at least on outside exposed surfaces of the plurality of metal strands. When a virtual circle as a smallest circle enclosing the outer circumferential layer is assumed in a cross section perpendicular to a central axis of the wire body, a part of an outer edge of the solid lubrication film of the cross section is inside the virtual circle and a cross-sectional area of the solid lubrication film in the cross section satisfies A/B>0.7 where A is a size of a portion outside the virtual circle and B is a size of a portion inside the virtual circle.

Abstract: An electrode for high frequency medical device includes: a base; and a coating layer which is laminated onto the base, includes at least either one of a fluororesin and a silicon compound, has a volume resistivity of 1.0×100 to 1.0×1013?·×cm, and has a thickness of 1 to 30 ?m. The electrode is configured to denature and dissect a living tissue by a Joule heating due to a high frequency current and an arc discharge.

Abstract: An electrode for high-frequency medical device, has a substrate; an intermediate layer laminated on the substrate, wherein the intermediate layer has a top layer formed on the outermost part of the intermediate layer and the top layer is formed from a metal layer having a higher thermal conductivity than that of the substrate; and a coating layer laminated on the intermediate layer, wherein the coating layer is configured such that a plurality of metal particles having a thermal conductivity equal to or larger than 250 W/(m·K) are distributed in a nonmetal material.

Abstract: A high-frequency electrode for a medical device includes an electrode base material and an oxide. The electrode base material is made of a metal or an alloy. The oxide is added into the electrode base material. The metal or alloy has a melting point of 2000° C. or higher. The oxide has a particle diameter of 2 ?m or more.

Abstract: A conductive adhesion preventing film for medical use, includes: a nonconductive base material; and a linear conductor having a length of 10 ?m or more and a diameter of more than 50 nm and contained in the conductive adhesion preventing film by an amount of 5% by mass or more and 40% by mass or less, wherein the conductive adhesion preventing film is formed on an electrode surface of a medical device performing at least one of incision, resection, coagulation, and ablation on living tissue by applying a high frequency voltage.

Abstract: A wire for a medical device includes a wire body and a solid lubrication film. The wire body has an outer circumferential layer formed of a plurality of metal strands that are twisted with each other. The solid lubrication film is formed at least on outside exposed surfaces of the plurality of metal strands. When a virtual circle as a smallest circle enclosing the outer circumferential layer is assumed in a cross section perpendicular to a central axis of the wire body, a part of an outer edge of the solid lubrication film of the cross section is inside the virtual circle and a cross-sectional area of the solid lubrication film in the cross section satisfies A/B>0.7 where A is a size of a portion outside the virtual circle and B is a size of a portion inside the virtual circle.

Abstract: An adhesion preventing film coated on a surface of a member, includes a surface layer with siloxane bonding as a main component; and protrusion particles, each protrusion particle having a protrusion part protruding from the surface layer, wherein a methyl group exists at least on a surface of the protrusion part of the protrusion particle.

Abstract: This adhesion prevention film for medical devices is a single-layer or multilayer adhesion prevention film that is formed on the surface of a medical device. This adhesion prevention film for medical devices comprises an outermost layer that contains a plurality of conductive particles and a resin having a continuously usable temperature of 200° C. or higher. The surface of the outermost layer is provided with recesses and projections by having parts of the plurality of conductive particles exposed from the resin.