Abstract: An ultrasonic treatment instrument includes: a vibration transmitter including a treatment portion for treating a living tissue at a distal end of the vibration transmitter, the vibration transmitter being configured to transfer ultrasonic vibration from a proximal end of the vibration transmitter toward the treatment portion; a holder configured to open and close with respect to the treatment portion; a resin pad including a gripping surface for gripping the living tissue between the resin pad and the treatment portion; and a heat transmitter that is configured separately from the holder and extends from the holder to an inside of the resin pad.

Abstract: An ultrasonic treatment tool comprises: a blade including a treatment portion, the treatment portion is configured to treat a treatment target and the blade is configured to transmit an ultrasonic vibration to the treatment portion, a pattern on at least part of an outer surface of the treatment portion, the pattern including a plurality of protrusions, each protrusion includes at least one side surface intersecting with a vibration direction of the ultrasonic vibration, the at least one side surface defining a cavitation surface, at least one cavitation surface is located within a pitch width in the vibration direction, an amplitude of the ultrasonic vibration defines the pitch width.

Abstract: An ultrasonic treatment tool comprises: a blade including a treatment portion at a distal side of the blade, the blade configured to transmit an ultrasonic vibration from a proximal side of the blade to the treatment portion and the treatment portion configured to treat a body tissue, a grasper movable relative to the treatment portion between an open position and a closed position to grasp the body tissue between the grasper and the treatment portion, a coating provided on the grasper, the coating is formed by a first resin, when the grasper is in the closed position, the coating contacts the treatment portion.

Abstract: Each of segments of a vibration transmitting member has a dimension of a half-wave length between mutually neighboring vibration anti-nodes and sets a vibration node as a center. In each of recess segments included in the segments, the vibration node is located in a groove, and an intermediate extension extends from a proximal end to a distal end in the groove in a longitudinal direction. At least two of the recess segments are different from each other with respect to at least one of a dimension in the longitudinal direction of the intermediate extension and a cross-sectional area perpendicular to the longitudinal direction of the intermediate extension.

Abstract: A vibration transmitter can include a straight portion, a curved portion, a first curved surface provided on an external surface of the curved portion, a second curved surface facing a side opposite to the first curved surface and a first portion provided on the first curved surface. The first portion can extend towards a side opposite to the side toward which the curved portion is curved and a distance between the first portion and an imaginary curved surface can increase from the proximal side toward the distal side, and the imaginary curved surface being parallel with the second curved surface.

Abstract: Treatment instrument with movable handle and fixed handle includes biasing member for biasing the movable handle in an opening direction and an assist system with attraction force, e.g., magnetic force, to attract the movable handle in a closing direction toward the fixed handle. Range of movement of movable handle includes first movable range and second movable range. The second movable range occurs when a second gripping piece, e.g. a jaw, is in contact with respect to a first gripping piece, e.g., a vibration transmission member, and the movable handle is then further moved in a direction toward the fixed handle to a fully closed position. In the second movable range, attraction forces associated with the assist system are smaller than biasing force from the biasing member so that, upon release of a gripping force by an operator, the movable handle moves away from the fixed handle.

Abstract: A treatment instrument including a heat transmitter that includes a treating surface and an installation surface, a substrate attached to the installation surface, and a heat generator formed on a surface of the substrate. The substrate surface and heat generator together form an uneven surface. First and second adhesion layers formed of a material having thermal conductivity and electrical insulation are provided between the installation surface and the substrate. The first adhesion layer is in close contact with the installation surface, and the second adhesion layer is in close contact with the heat generator and the substrate surface. The second adhesion layer is inserted into a recess in the uneven surface formed by the heat generator on substrate surface so as to increase the contact area between the second adhesion layer and the uneven surface.

Abstract: A medical device includes a thermal source that generates heat, a base that has an outer surface and to which the heat from the thermal source is transferred, a first coating that contacts one part of the outer surface of the base and a second coating that is provided on the outer surface of the base, and is exposed and electrically conductive. The second coating supplies, a high-frequency current to an object to be treated. The medical device also includes a laminated portion that includes the first coating in the outer surface of the base extends and a portion of the second coating that is laminated on the first coating.

Abstract: A vibration transmission member includes a main body, a treatment portion that is provided at the distal end of the main body, a first covering formed of a material that has an electrical insulating property and has a thermal conductivity lower than a thermal conductivity of the main body, which covers a part of a surface of the treatment portion, and a second covering formed of a material that has an electrical insulating property and has a thermal conductivity lower than the thermal conductivity of the main body. The second covering is integrally formed with at least a part of the first covering and varies in thickness in a circumferential direction of the main body. The second covering includes a first area and a second area in the circumferential direction, such that a thickness dimension of the first area is smaller than a thickness dimension of the second area.

Abstract: Provided is a method of manufacturing a vibration transmission member for an ultrasonic treatment tool. The method includes: applying a release agent between a surface of a vibration transmission member configured to transmit ultrasonic vibration and a die for hot forging; performing hot forging to form the vibration transmission member after the applying of the release agent; removing, after the performing of the hot forging, a part of an oxide film formed in the performing of the hot forging by a first surface treatment; performing pickling to remove the oxide film after the removing of the part of the oxide film by a blasting treatment; and performing coating with a resin after the performing of the pickling.

Abstract: A vibration transmitting member transmits ultrasonic vibration generated by an ultrasonic transducer from a proximal side toward a distal side. The vibration transmitting member includes a connection connected to the ultrasonic transducer. When a reference vibration node, which is located most proximally among vibration nodes occurring on the distal side relative to the connection, is defined, while the vibration transmitting member vibrates at a resonance frequency in a predetermined frequency range, a cross-sectional area decreasing part is provided between the connection and the reference vibration node. In the cross-sectional area decreasing part, a cross-sectional area perpendicular to a longitudinal direction gradually decreases from the distal side toward the proximal side.

Abstract: The disclosed technology is directed to a treatment tool having a blade. The blade includes a treatment surface configured to engage with a treatment target. A heater is configured to be coupled to the blade. The heater includes respective first and second heat generating surfaces each of which extending in a direction transverse to the treatment surface. Respective first and second thermally conductive members each of which is interposed between the respective first and second heat generating surfaces and the blade so as to thermally engage the respective first and second heat generating surfaces and the blade to one another. The respective first and second thermally conductive members includes respective first and second thermal conductivity anisotropies each of which being higher in longitudinal directions of the blade and each of which being lower in widthwise directions of the blade that are transverse to the longitudinal directions.

Abstract: A treatment device equipped with high frequency capability includes a pair of clasping jaws that serves as bipolar electrodes. Another treatment device equipped with high frequency capability includes a high-frequency knife that serves as monopolar electrode. An anti-fouling coating that minimizes or prevents adhesion of cauterized tissues is incorporated on the electrode surfaces. Durability and functioning of the anti-fouling coating is improved by one or a combination of increased coating thickness, increased density of the coating, and incorporation of glass and/or high molecular weight PFPE into the coating. The anti-fouling coating can be applied to different locations of the treatment portion, e.g., an insulated portion and a recess of an electrode, an insulated portion and a boundary portion with an electrode.

Abstract: A vibration transmission member includes: a main body portion configured to transmit ultrasound vibration; a treatment portion that is provided at a distal end of the main body portion, the treatment portion being configured to apply ultrasound vibration to a living tissue; a coating portion that is made of an electrically insulating material containing a first resin, the coating portion being configured to cover a part of a surface of the treatment portion; and a mold portion that is made of an electrically insulating material containing a second resin different from the first resin, and that is fused to at least a part of the coating portion.

Abstract: A treatment system includes a treatment tool and an energy source apparatus used to supply electrical energy to the treatment tool. The treatment tool includes a heater and bipolar electrodes to grip a treatment target. The energy source apparatus includes a processor to control the output to the bipolar electrodes and the heater, respectively. The processor directs the output to the bipolar electrodes and detects an initial value of the impedance of the treatment target. The processor determines whether or not the impedance has reached a minimum value and then retrieves a parameter that is detected before the minimum value of the impedance is detected. The processor performs a first process and/or a second process based on the acquired parameter after the minimum value is detected. The first process determines whether or not the output to the heater is required. The second process sets a target value.

Abstract: The disclosed technology is directed to a treatment tool having a blade configured to engage with a treatment target. A heater is configured to be spaced apart from the blade. A first thermally conductive member is sandwiched between the blade and the heater so as to transmit heat to the blade. The first thermally conductive member includes respective first and second portions each of which is disposed on respective distal-end and proximal-end sides in longitudinal directions of the blade for thermally conducting a different prescribed quantity of heat per unit time from each of the respective first and second portions to the blade via the heater. The first thermally conductive member includes a first thermal conductivity anisotropy that is higher in longitudinal directions of the blade and is lower in widthwise directions transverse to the longitudinal directions.

Abstract: Ultrasonic treatment device includes a blade configured to apply ultrasonic vibrations to target tissue and a jaw movable relative to the blade between open and closed configurations. In some examples, the jaw includes a base having an inner channel and a plurality of slots in communication with the inner channel, and a pad having a plurality of protrusions, each protrusion configured to be received within a different slot of the plurality of slots. In further examples, the jaw includes a base having a pair of side walls defining an inner channel, one of the side walls including a rail member extending into the channel, and a pad having a single groove for receiving the rail member when the pad is positioned within the channel. A surface of the groove is configured to contact a surface of the rail when a force is applied against a grasping surface of the pad.

Abstract: A vibration transmission member for an ultrasonic treatment tool includes: a main body including a central axis, a distal end (DE), and a proximal end (PE), a center moving portion (CMP) at a distal side of a node where the DE meets the CMP, the node being at a most DE of the main body, and a curved portion (CP) at a distal side of the CMP. In a direction from a PE of the CP toward a DE of the CP, the CP is curved in a first direction. The center of gravity of the CMP moves along the CMP toward the DE of the CMP, the center of gravity moves relative to the central axis in a second direction. The CP extends from the DE of the main body to the PE of the CP. The CP includes a plurality of notches along a periphery of the CP.

Abstract: A treatment instrument that includes a first grasping member having a first grasping surface and a second grasping member having a second grasping surface. The treatment instrument includes a cover that covers at least a part of a region of at least one of the first and second grasping members other than the first and second grasping surfaces, and a pair of electrodes that are arranged on at least one of the first and second grasping surfaces to function as a bipolar electrode. An opening is provided in the cove, and a monopolar electrode arranged to overlap with the opening and is exposed to an outside of the treatment instrument through the opening.

Abstract: A treatment system includes an energy source apparatus and a thermal treatment tool configured to receive electrical energy from the energy source apparatus. The thermal treatment tool includes a thermally conductive member having opposed respective treatment and installation surfaces. A board being disposed on the installation surface and having respective longitudinal and widthwise directions. The board includes an electrically conductive wire having a conductive portion and a heat generating portion for generating heat when supplied with electric energy. The board is folded back at a folded point and is disposed on the thermally conductive member such that the heat generating portion of the electrically conductive wire facing the installation surface.