Abstract: An endoscope includes: a distal end body positioned at a distal end of an insertion portion; and a first built-in component and a second built-in component each having a distal end portion housed in the distal end body. The distal end body includes: a first housing portion that extends along a first direction and houses the distal end portion of the first built-in component; a first opening portion communicating with the first housing portion and being open in at least a second direction; a second housing portion that communicates with the first housing portion, extends along the first direction at a position shifted in a third direction, and houses the distal end portion of the second built-in component; and a second opening portion communicating with the second housing portion and be open in at least the second direction.

Abstract: An endoscope includes: an insertion section including a distal end and a proximal end, the insertion section configured for insertion into a subject; an operation section main body connected to the proximal end of the insertion section and, the operation section main body configured to be grasped by a user. The operation section main body includes an operation knob and a switch button. The operation knob is rotatable about a center axis to move the distal end of the insertion section. The switch button is translatable in a translating direction. In a view in a longitudinal direction of the operation section main body, the center axis of the operation knob is configured to be tilted with respect to a direction that is perpendicular to each of the longitudinal direction of the operation section main body and the translating direction of the switch button.

Abstract: An endoscope includes: a connection member that has an attaching and detaching direction defined to be orthogonal to a central axis of a distal end rigid portion in a longitudinal direction and is engaged with a wire connection portion of a movable member; and a rigid guide including a wire insertion path that guides a pulling wire, a distal end opening of the wire insertion path being disposed on a proximal end side of the movable member. The distal end opening of the wire insertion path of the rigid guide is disposed at a position closer to the central axis of the distal end rigid portion in an attaching direction of the connection member than a position in a plane formed by a rotation trajectory of the connection member.

Abstract: An endoscope including an insertion section including a movable member configured to move between a first position and a second position, and an operation section including a lever and a stopper, and the operation section provided on a proximal end side of the insertion section. The lever is configured to be rotatable around a first rotation axis within a first rotational range of rotation in a first state to move the movable member between the first position and the second position. The stopper is configured to restrict rotation of the lever within the first rotational range of rotation in the first state. One of the lever or the stopper is deformed to change the first rotational range in the first state to a second rotational range of rotation in a second state, the second rotation range of rotation being greater than the first rotational range of rotation.

Abstract: The endoscope has an insertion portion, an imaging unit, and a member formed in a given dimension. The insertion portion has an apical portion, an actively curvable portion, and a treatment device channel. The actively curvable portion is located on the proximal side of the apical portion. The treatment device channel is positioned along the longitudinal axis of the insertion portion. The insertion portion is formed of resin. One or more radiopaque members, formed of knowns dimensions, are coated on a surface of the insertion portion or placed in, buried or covered laterally in the insertion portion. The X-ray transmittance of the radiopaque members is different from the X-ray transmittance of the resin forming the insertion portion.

Abstract: A signal transmission and reception system includes a transmission device configured to transmit a transmission signal, a reception device configured to receive the transmission signal, in which the transmission device includes a Manchester coding circuit that generates an encoded signal in which transmission data is converted into a Manchester code as a switching edge, as at least a part of the transmission signal on the basis of a transmission clock, and the reception device includes a high-speed clock generation circuit, an edge detection circuit configured to detect an edge of the transmission signal, and a signal detection circuit configured to detect the edge detected in a period sandwiched between a first elapsed time at which a first period has elapsed from a start point and a second elapsed time at which a second period longer than the first period has elapsed from the start point as the switching edge.

Abstract: A guidewire holding device comprises a sheath including a lumen, a holder disposed at a distal end of the sheath and configured to be switchable between holding a guidewire and releasing the guidewire, a treatment tool inserted in the lumen to perform an intended treatment, and a wire connected to the treatment tool and configured to move the treatment tool between a first configuration and a second configuration. In the first configuration, the treatment tool is contained insider the lumen, and, in the second configuration, the treatment tool is protruded from the distal end of the sheath.

Abstract: An imaging device includes pixels, a sampling circuit, a reference signal generation circuit, a comparator, a measurement circuit, and a voltage adjustment circuit. The sampling circuit is configured to sample an analog signal. The comparator is configured to compare a voltage of the analog signal with a voltage of the reference signal. The reference signal generation circuit is configured to generate the reference signal that has a first voltage in a first period and has a second voltage in a second period. The measurement circuit is configured to measure the length of a period until the voltage of the analog signal and the voltage of the reference signal match each other. The voltage adjustment circuit is configured to adjust an analog voltage provided to the reference signal generation circuit such that a value of the first voltage nears a value of the second voltage.

Abstract: A medical manipulator system includes a medical manipulator having a bending portion and a wire that bends the bending portion, an actuator that bends the bending portion by driving the wire, a sensor that detects a tension of the wire; and a control device that controls the actuator, wherein the wire includes a pair of first wires that bend the bending portion in a first direction, and when a tension difference between the pair of first wires is larger than a first threshold value, the control device performs first tension control to drive at least one wire of the pair of first wires so that the tension difference is equal to or less than the first threshold value.

Abstract: An endoscope includes: a distal-end constituting portion provided at a distal end of an insertion portion of the endoscope; an observation window having a field of view direction that intersects a longitudinal axis of the insertion portion; a first flat surface on which the observation window is arranged, the first flat surface constituting a part of a surface of the distal-end constituting portion and having a first intersection angle with respect to the longitudinal axis; a second flat surface constituting a part of the surface of the distal-end constituting portion, the second flat surface being provided on a distal end side or a proximal end side with respect to the first flat surface, and having a second intersection angle with respect to the longitudinal axis, the second intersection angle being smaller than the first intersection angle; and a supply unit arranged on the second flat surface.

Abstract: An image processing apparatus includes a processor. The processor is configured to: set a plurality of tracking points uniformly arranged in a first image that is one of the time series of images; track each of the tracking points from the first image to a second image and determine the success or failure in tracking each of the tracking points, the second image being an image at a different time from the first image among the time series of images; estimate an image plane of the second image by perspective projection transformation using the tracking points tracked successfully; correct the positions of the tracking points failed to be tracked on the second image by back projection to the image plane; and perform image registration on the second image based on the plurality of tracking points to generate a registration image.

Abstract: A distal end body of an endoscope includes: an outer portion defining an internal space and including a partition, the partition having a first through hole, the partition partitioning the internal space into a first space and a second space; a first sealing portion including a second through hole, the first sealing portion being fitted in the first through hole in a state of protruding from the first through hole toward the first space; and an inner portion being fitted in the second through hole.

Abstract: An ultrasonic motor of the invention includes: a transducer including a plurality of piezoelectric elements and an elastic body having an outer wall surface on which the plurality of piezoelectric elements are secured, the transducer being configured to vibrate when an alternating voltage is applied to the plurality of piezoelectric elements; a rotator configured to rotate by receiving the vibration of the transducer by being pressed in contact with a surface of the transducer; a biasing spring configured to press the rotator against the elastic body; and an output shaft configured to output rotation of the rotator. The elastic body includes a hollow portion and houses the rotator and the biasing spring in the hollow portion, and the rotator rotates in a state of being pressed against an inner wall surface of the hollow portion of the elastic body by the biasing spring.

Abstract: A clip device includes a clip, including a plurality of arms having sliding grooves; and an intermediate member inserted into the sliding grooves for connecting the plurality of arms; a pressing tube accommodating a proximal end portion of the clip; a connection member connecting with an operation wire at a proximal end side and including an engaging portion engaging with the intermediate member; and a locking mechanism for lock the plurality of arms when the clip is pulled toward the proximal end side by a predetermined distance by the connection member, wherein the clip includes a contact portion formed on a side surface of the arm to be in contact with the engaging portion from a direction orthogonal to an axial direction of the intermediate portion for preventing a deformation of the engaging portion when the intermediate portion slides along the sliding groove before the plurality of arms are locked.

Abstract: An endoscope includes an insertion portion, an operation portion located proximally relative to the insertion portion, and a universal cord including a first end connected to the operation portion, a second end including a connector, and a first bending region located between the first end and the second end. A minimum radius of curvature of the first bending region is a first value. The universal cord has a second region adjacent to the first bending region. A minimum radius of curvature of the second region is a second value. The first value is smaller than the second value.

Abstract: A manipulation detection portion detects a first manipulation on the basis of a motion of an object in contact with a contact detection device. A drive control portion performs a shape control process of changing a shape of at least a part of an endoluminal device on the basis of the first manipulation. The manipulation detection portion detects a second manipulation on the basis of the motion of the object while the object is continuously in contact with the contact detection device after the detection of the first manipulation starts. The drive control portion performs a control process of maintaining a shape in which at least a part of the endoluminal device is changed on the basis of the second manipulation.

Abstract: A bending portion of an endoscope according to the disclosure includes: a plurality of bending pieces rotatably coupled to each other by a coupling fastener; a wire configured to transmit a traction operating force to a first bending piece included in the plurality of bending pieces; and a pin located in a first hole in the first bending piece, the pin connecting the wire to the first bending piece, a first end portion of the pin protruding from an outer circumference of the first bending piece, a second end portion of the pin protruding from an inner circumference of the first bending piece, a third portion of the pin contacts a surface of the first hole. A first width dimension of the first end portion is larger than an opening dimension of the first hole, the wire is attached to the second end portion.

Abstract: A stent device including a stent cover having differing porosity ratio is disclosed. The stent covers the stent body comprising of stent wires and stent cells enclosed by the stent wires. The stent cover differs in porosity ratio for areas covering the stent wires and the areas covering the stent cells. The porosity ratio for areas covering the stent wires may have a higher porosity rate in order to promote endothelialization of the stent device. A bilayer stent cover differing in porosity ratio may be used to cover the stent body, as well as stent cover not covering the entirety of the stent body.

Abstract: The endoscope has an insertion portion, an imaging unit, and a member formed in a given dimension. The insertion portion has an apical portion, an actively curvable portion, and a treatment device channel. The actively curvable portion is located on the proximal side of the apical portion. The treatment device channel is positioned along the longitudinal axis of the insertion portion. The insertion portion is formed of resin. One or more radiopaque members, formed of knowns dimensions, are coated on a surface of the insertion portion or placed in, buried or covered laterally in the insertion portion. The X-ray transmittance of the radiopaque members is different from the X-ray transmittance of the resin forming the insertion portion.

Abstract: An endoscope bending operation mechanism comprises an up-down bending operation knob (a left-right bending operation knob), an up-down bending pulley (a left-right bending pulley) supported for rotation by a pulley case, the up-down bending pulley is configured to move by an operation force from the up-down bending operation knob, an up-down bending operation wire (a left-right bending operation wire) having a proximal end and a distal end, the proximal end of which is connected to the up-down bending pulley (the left-right bending pulley) and the distal end of which is connected to a bending portion of an insertion section of an endoscope, a stopper member, a protruding portion, the stopper member and the protruding portion are movable relative to each other, an amount of relative rotation between the up-down bending pulley (the left-right bending pulley) and the pulley case is restricted by the protruding portion contacting the stopper member.