Abstract: An energy treatment tool includes: a grip to be held by an operator; a lever that is provided in a state of being exposed to an outside of the grip, the lever being configured to move in response to a changing operation by an operator, the changing operation being for changing an output state of energy; an electric switch that is arranged inside the grip the electric switch being configured to generate a signal for changing an output state of the energy; and a driver that is installed inside the grip such that the driver is rotatable about an axis intersecting an axis along a longitudinal axis correspondingly to movement of the lever, the driver being configured to switch the electric switch between a contacting state and a noncontacting state.

Abstract: A laser light irradiation system that irradiates a stone in a body with laser light to cause the stone to be dust, the laser light irradiation system including a laser fiber that emits the laser light, and a processor configured to control a frequency of the laser light emitted from the laser fiber, wherein the processor is configured to switch between first laser light of a first frequency and second laser light of a second frequency such that the second laser light is emitted at least before or after an emission timing of the first laser light, the first laser light generating a water flow that pulls the stone toward the laser fiber, the second laser light generating a water flow that stirs the stone.

Abstract: An information processing device of the present invention is capable of collaboration with a learning device to determine whether an image group that has been obtained in time series by the first endoscope is an image group obtained at a first time or at a second time, and to create a first inference model for image feature determination of images for the first endoscope by performing learning with results of having performed annotation on the image group that was obtained at the second time as training data, the information processing device comprising at least one or a plurality of classifying processors that classify image groups constituting training data candidates, within an image group from the first endoscope that has been newly acquired, or an image group from a second endoscope, using the image group that has been obtained at the first time, when the first inference model was created.

Abstract: An objective optical system for an endoscope comprising, in order from the object side, a first lens unit G1 having a negative refractive power, a second lens unit G2 having a positive refractive power, and a third lens unit G3 having a positive refractive power. The first lens unit G1 includes a negative lens L1. The second lens unit G2 includes a positive meniscus lens L2 having a convex surface facing the image side. The third lens unit G3 includes, in order from the object side, an object side positive lens L3 and a cemented lens CL made up of a positive lens L4 and a negative lens L5. The second lens unit G2 is moved for focusing. The objective optical system satisfies the following conditional expressions (1) and (2): - 0 . 0 ? 7 < f ? 1 / f ? 2 < - 0 .015 ( 1 ) - 0.4 < f ? 1 / f ? 3 < - 0 .

Abstract: Provided is an endoscopic treatment method for resecting a full thickness of a gastrointestinal wall under an endoscope, the method including: making a full circumferential incision in tissue around a target tissue up to a submucosal layer; fixing a traction device to a first location positioned further outside the target tissue; pulling the first location using the traction device so that a first region and a second region are folded and approach each other along a fold line that passes through the first location and divides the target tissue into the first region and the second region, to lift the full thickness of the gastrointestinal wall including the target tissue toward a gastrointestinal lumen side; suturing the submucosal layer exposed by full circumferential incision; and resecting the target tissue placed in the lumen side of the sutured area.

Abstract: A treatment device includes a treatment tool and an outer tube connected to a long guide device and into which the tool is inserted, wherein the tube includes: a slack portion formed from a portion of the tube in a longitudinal direction of the tube, the slack portion being disposed in a slackened state; and a movable portion disposed on a proximal-end side of the slack portion, the movable portion being movable forward and backward in the longitudinal direction, and a slack amount of the slack portion changes as a result of the movable portion being moved forward and backward with respect to the tool, and, accordingly, a distal end of the tool disposed farther on a distal-end side than the slack portion is moved in the longitudinal direction.

Abstract: A full-thickness resection method for a gastrointestinal tract includes forming a pair of first markings in surrounding tissue on both sides of a lesion to sandwich the lesion therebetween; performing a full-thickness resection to a portion including the lesion; identifying a pair of suture locations in the vicinity of the pair of first markings; and suturing the pair of first suture locations.

Abstract: A treatment device and an endoscopic treatment method are disclosed. The treatment device includes a first pipeline that is made of material having electrical insulation, and includes an internal space; an electrode that is energizable with high frequency current; a distal-end tip that is attached to a distal end of the first pipeline, and includes a distal-end opening in communication with the internal space of the first pipeline; and a second pipeline that is inserted through the first pipeline and through which liquid can pass. The endoscopic treatment method includes puncturing a treatment target and performing a local injection using the treatment device.

Abstract: A medical stapler includes a grasping portion connected to an endoscope and having a first jaw and a second jaw connected by a rotation shaft; an operation portion configured to receive an external force for operating the grasping portion to open and close; a first wire configured to transmit the external force that is received by the operation portion to the grasping portion; and a movable pin attached to a distal end of the first wire, wherein the grasping portion is transitioned to an open state and a closed state by the first/second jaw relatively rotating with each other, and the movable pin is advanceable and retractable between positions at the proximal-end and distal-end side of the rotation shaft in a state in which the movable pin is engaged with an engagement groove formed in the first jaw.

Abstract: An endoscope system including a processor. The processor includes hardware and is configured to acquire an in-vivo image, input the in-vivo image to a first classifier to output first performance information, and input the in-vivo image to a second classifier to output second performance information. The first classifier and the second classifier are mutually different classifiers.

Abstract: A medical stapler provided at a distal end of an endoscope includes a wire extending in an axial direction of the endoscope and a staple release part having a cartridge configured to accommodate a staple and an injection mechanism connected to a distal end of the wire and configured to eject the staple from the cartridge. The cartridge is provided so that the cartridge is removably attached to the staple release part. The injection mechanism is movable from a first position that is an initial position to a second position where the staple is ejected by manipulating the wire. The injection mechanism is located at the second position when the cartridge is removed from the staple release part. The injection mechanism moves from the second position to the first position when the cartridge is attached to the staple release part.

Abstract: A treatment system includes a treatment tool, an imaging apparatus, and a control device. The treatment tool is configured to perform treatment on a living tissue by applying treatment energy from an end effector to the living tissue based on supplied electric power. The imaging apparatus captures an image of the living tissue in a state in which the treatment energy is applied from the end effector to the living tissue. The control device includes a processor to control the imaging apparatus by acquiring the captured image, determining whether an abnormality has occurred in the end effector based on the acquired captured image, and executing an instruction to stop supply of the electric power to the treatment tool when determining that the abnormality has occurred in the end effector.

Abstract: An ultrasound transducer includes: an acoustic matching layer; plural piezoelectric elements arrayed on the acoustic matching layer; and plural blocks arranged adjacent to at least one of ends of the piezoelectric elements in an elevation direction of the piezoelectric elements, each of the plural blocks including an abrasive.

Abstract: An information processing system, including a processor comprising hardware. The processor being configured to: acquire an endoscope image from an endoscope, the endoscope image showing a papillary portion, determine route information of a lumen based on the endoscope image, the lumen being at least one of a biliary duct or a pancreatic duct, generate a display image based on a result of the determination of the route information of the lumen, the display image having a route guide image to provide guidance of a route of the lumen leading to the papillary portion superimposed on the endoscope image, and display the display image on a display.

Abstract: An ultrasound probe includes: a transducer array in which a plurality of transducers configured to transmit and receive ultrasonic waves are arrayed with longitudinal directions of the transducers aligned; and a pair of housings each having a plate shape, the housings being configured to sandwich the transducers, the housings including a first conductive portion provided on a first face positioned on a side of each of the transducers, an insulating portion provided on an outer edge portion of a second face that is positioned on an opposite side of the first face, a second conductive portion provided on the second face, and a third conductive portion electrically connecting the first conductive portion and the second conductive portion.

Abstract: A suture anchor including a base, a deformable portion, and a first passage and a second passage each formed in the base to allow a suture to pass therethrough, wherein the deformable portion is a cantilever state having a fixed end, which is disposed at a side of one end of the base, and a free end, which is disposed at a side of the other end of the base relative to the fixed end and which is separated by a space from the base, and the deformable portion is deformable in a direction in which the free end approaches the base, the first passage communicates the upper side and the lower side of the base, the second passage communicates the space and a side of the one end of the fixed end, and the deformable portion is deformed due to a tensile force applied to the suture.

Abstract: A scanning optical fiber includes: an optical fiber; and a protruding member that is provided in a distal end region of the optical fiber, and that has an outer diameter larger than an outer diameter of the optical fiber. The protruding member receives a flow of a fluid in a longitudinal direction of the optical fiber toward a distal end of the optical fiber, and generates a force in a radial direction of the optical fiber.

Abstract: Provided is a waveform control device for a laser lithotripsy apparatus including: a processor including hardware, the processor being configured to: pulse a laser beam; change an output of the pulsed laser beam; continuously emit the laser beam until a bubble generated from a laser emission end by an irradiation of the laser beam reaches a crushing target; and after the bubble generated from the laser emission end reaches the crushing target, reduce the output of the laser beam or turn off the irradiation of the laser beam during a period in which there is the bubble between the laser emission end and the crushing target, and the bubble does not couple the laser emission end and the crushing target.

Abstract: A scanning optical fiber includes: a fiber core having a proximal region and a distal region; and a cover member formed of a single seamless member and covering at least a portion of the core. The cover member includes a tubular main section that covers at least a portion of the distal region excluding an end portion of the core, a protrusion protruding from a distal end of the main section at only one side of the core in a radial direction and arranged alongside the end portion in the radial direction, and a large diameter section provided at a proximal side relative to the distal end of the main section and folded in a longitudinal direction of the main section into a shape that protrudes radially outward.

Abstract: An endoscope puncture needle including a tubular portion that includes first and second needle tip portions at a distal end thereof. The first needle tip portion includes a first needle tip at a distal end, and first and second blade surfaces extending towards the first needle tip. The second needle tip portion includes a second needle tip at a distal end, and third and fourth blade surfaces extending towards the second needle tip. The first blade surface and the third blade surface face in directions approaching each other, and the second blade surface and the fourth blade surface face in directions approaching each other.