Abstract: A treatment system includes an energy source, a pair of holding portions, an output portion and a first channel. At least one of the holding portions is configured to relatively move with respect to the other holding portion. The output portion is disposed on at least one of the pair of holding portions and connected with the energy source. The output portion is configured to generate a fluid including a gas and/or a liquid from the living tissue by the energy supplied from the energy source. The first channel is disposed at a position close to the output portion. The first channel is configured to pass the fluid generated from the living tissue.

Abstract: A treatment system includes an energy source, a pair of holding portions, an output portion and a cooling section. To hold a living tissue of a treatment target, at least one of the pair of the holding portions relatively moves with respect to the other holding portion. The output portion is disposed on at least one of the holding portions and connected with the energy source. Moreover, the output portion thermally denatures the living tissue, when the energy is supplied from the energy source. The cooling section inhibits the thermal spread in a direction away from the output portion.

Abstract: An electrosurgical instrument of the present invention includes an elongated instrument body, a cylindrical member constituting the instrument body, an ultrasonic transducer provided in inside of the cylindrical member for applying ultrasonic vibration to a fluid flowing into a liquid feed passage, a fluid atomizing port provided at the distal side of the instrument body for injecting the liquid which was given the ultrasonic vibration by the ultrasonic transducer and atomized to a living tissue from the distal end of the instrument body, and an electrode provided at the distal side of the instrument body for discharging high-frequency electric energy along the liquid injected from the fluid atomizing port so as to coagulate a surface layer of the living tissue.

Abstract: A treatment device to treat a living tissue includes a sealing member which joints desired regions of at least two living tissues to each other in a sealed state, and a maintaining member which maintains contact between the tissues located in the vicinity of parts jointed by the sealing member.

Abstract: A treatment system that applies energy to a living tissue includes first and second holding members, an operating section, an energy source, and a plurality of energy applying portions that apply energy supplied from the energy source. Each of the first and second holding members has a holding surface to hold the living tissue. The operating section operates a relative movement of at least one of the first and second holding members with respect to the other. The energy source supplies energy to at least one of the first and second holding members. The plurality of energy applying portions are provided on the applying surface of at least one of the first and second holding members, and uniforms density of energy applied to a living tissue held by the first and second holding members.

Abstract: A treatment system that applies energy to a living tissue includes first and second holding members, an operating section, an energy source, and a plurality of energy applying portions that apply energy supplied from the energy source. Each of the first and second holding members has a holding surface to hold the living tissue. The operating section operates a relative movement of at least one of the first and second holding members with respect to the other. The energy source supplies energy to at least one of the first and second holding members. The plurality of energy applying portions are provided on the holding surface of at least one of the first and second holding members, and control density of energy applied to a living tissue held by the first and second holding members.

Abstract: A treatment system includes an energy source, a pair of holding portions, an output portion and a cooling section. To hold a living tissue of a treatment target, at least one of the pair of the holding portions relatively moves with respect to the other holding portion. The output portion is disposed on at least one of the holding portions and connected with the energy source. Moreover, the output portion thermally denatures the living tissue, when the energy is supplied from the energy source. The cooling section inhibits the thermal spread in a direction away from the output portion.

Abstract: A treatment system includes an energy source, a pair of holding portions, an output portion and a first channel. At least one of the holding portions is configured to relatively move with respect to the other holding portion. The output portion is disposed on at least one of the pair of holding portions and connected with the energy source. The output portion is configured to generate a fluid including a gas and/or a liquid from the living tissue by the energy supplied from the energy source. The first channel is disposed at a position close to the output portion. The first channel is configured to pass the fluid generated from the living tissue.

Abstract: An electrosurgical instrument of the present invention includes an elongated instrument body, a cylindrical member constituting the instrument body, an ultrasonic transducer provided in inside of the cylindrical member for applying ultrasonic vibration to a fluid flowing into a liquid feed passage, a fluid atomizing port provided at the distal side of the instrument body for injecting the liquid which was given the ultrasonic vibration by the ultrasonic transducer and atomized to a living tissue from the distal end of the instrument body, and an electrode provided at the distal side of the instrument body for discharging high-frequency electric energy along the liquid injected from the fluid atomizing port so as to coagulate a surface layer of the living tissue.

Abstract: An electrosurgical instrument comprises an elongated treatment instrument body; a nozzle portion provided at the distal side of the treatment instrument body for injecting a conductive fluid flowing to the inside of the treatment instrument body from the distal end of the treatment instrument body in the atomized state; and an electrode provided at a distal side relative to the nozzle for discharging high-frequency electric energy supplied from a power source transmitted from the proximal side to the distal side of the treatment instrument body through an electric conductive member along the atomized-state conductive fluid injected from the nozzle portion.