Abstract: A digital-to-analog converter comprising: a plurality of capacitances and a plurality of switches. A capacitance among the plurality of capacitances, of which the number corresponds to the resolution of the analog signal to be output, is used as a voltage value generation capacitance, so as to generate a voltage value based on the reference voltage to be added or subtracted, by switching a node to which the second terminal is connected by a corresponding switch. A remaining capacitance, which is not used as the voltage value generation capacitance among the plurality of capacitances, is used as a gain adjustment capacitance, so as to adjust gain of a voltage value based on the reference voltage to be added or subtracted, by holding a node to which the second terminal is connected by a corresponding switch.

Abstract: An optical transducer for endoscope includes an optical element, an optical fiber, and a fiber holding member including a first holding member including a first principal surface and a second principal surface and a second holding member in which a third principal surface is disposed to face the second principal surface, a first through-hole into which the optical fiber is inserted, being formed in the first holding member, the optical element being mounted on a fourth principal surface. A trench connected to the first through-hole and including openings respectively on opposed two side surfaces is formed on the second principal surface. Only a part of a distal end portion of the optical fiber is observable from the openings of the trench.

Abstract: An AD conversion device includes a comparison circuit, an upper-level DA conversion circuit, a level shift circuit, a lower-level DA conversion circuit, and a correction device. The comparison circuit includes a first terminal and a second terminal. The comparison circuit is configured to compare a first voltage level of a signal input to the first terminal with a second voltage level of a signal input to the second terminal. The upper-level DA conversion circuit includes a plurality of capacitance elements electrically connected to the second terminal. Capacitive values of the plurality of capacitance elements are weighted by binary numbers. The level shift circuit includes one or more capacitance elements electrically connected to the second terminal. The lower-level DA conversion circuit includes a plurality of capacitance elements electrically connected to the second terminal.

Abstract: A rigidity variable device includes: a main body unit having an elongated shape; a plurality of higher rigidity portions made of metal, the higher rigidity portions being included in the main body unit and arrayed in a separated manner in a direction along a longitudinal axis of the main body unit; and one or a plurality of lower rigidity portions included in the main body unit and including a shape memory alloy coil disposed between adjacent ones of the higher rigidity portions and formed by winding a wire around an axis parallel to the longitudinal axis. A rigidity of the shape memory alloy coil increases when heated.

Abstract: A phototherapy assistance device includes: a connector that is connectable to a balloon detection unit that detects inflation information regarding whether a balloon has been inflated in a body cavity; and one or more processors including hardware, the one or more processors being configured to: detect connection information regarding whether an optical probe to be inserted into the balloon is connected to a light source device; determine whether the optical probe can be inserted on a basis of the inflation information received from the balloon detection unit via the connector, and the connection information; and report a determined determination result.

Abstract: A data transfer device includes: a plurality of masters each having a buffer and configured to calculate a remaining-time counter based on an amount of data in the buffer; a memory system configured to perform data transfer with the plurality of masters and having a memory access prohibition period during which access from the plurality of masters is intermittently prohibited; a bus arbiter configured to arbitrate the plurality of masters based on the remaining-time counter; and a remaining-time counter-adjusting part configured to add a remaining-time counter offset, which adjusts the remaining-time counter until the start of the memory access prohibition period, to at least one of the plurality of masters.

Abstract: Provided is a temperature measurement method for measuring an ambient temperature of a long-length medical device, using first and second optical fibers attached to the medical device, the first and second optical fibers extending in parallel with each other along a longitudinal direction of the medical device, and the first optical fiber having a distal end serving as a measurement unit extending beyond a distal end of the second optical fiber along a longitudinal direction of the first and second optical fibers. The method includes: measuring an optical path length difference between a first optical path including the first optical fiber and a second optical path including the second optical fiber; and calculating a temperature of the measurement unit based on the optical path length difference. When temperatures of the first and second optical fibers are uniform, optical path lengths of the first and second optical paths are equal.

Abstract: An inference learning device, comprising an input device for inputting data from a data acquisition device, a learning device for obtaining an inference model by learning using training data that has been obtained by performing annotation of the data, and a data processing device that, for data that has been obtained continuously in time series from the data acquisition device, makes provisional training data by performing the annotation on a plurality of items of data that have been obtained from data that was obtained at a given first time to a second time that has been traced back to a predetermined time, and makes data, among the provisional training data that has a high correlation of causal relationship with the data of the first time, into adopted training data, which is training data used in the learning device.

Abstract: An imaging module includes an imager having an optical member on a light receiving surface, an electronic component having a front surface facing the same direction as the one to which an incidence surface of the optical member faces, a resin portion that has a first surface flush with the incidence surface of the optical member and the front surface of the electronic component, and a second surface that is a surface on a side opposite to the first surface while having the imager and the electronic component being embedded therein such that the incidence surface and the front surface are exposed to the first surface, an external connection terminal provided on the second surface, and a through wiring that extends through the resin portion to connect at least one of the imager and the electronic component with the external connection terminal.

Abstract: A fluid control device for endoscope includes a gas feeding conduit, an operation button and a deforming portion. The deforming portion is disposed on a downstream side with respect to the operation button, and has a closing portion which is brought into contact with an inner wall of the gas feeding conduit in a state where the operation button is not pushed.

Abstract: The system includes a memory that stores first and second trained models, and a processor. The processor acquires a captured image in which at least one energy device and at least one biological tissue are imaged. The processor detects a bounding box from the captured image by processing based on the first trained model and estimates the image recognition information from the captured image in the bounding box by processing based on the second trained model. The processor outputs an energy output adjustment instruction based on the estimated image recognition information to the generator. The generator controls the energy supply amount to the energy device based on the energy output adjustment instruction.

Abstract: An image pickup apparatus includes a lens, an image pickup device, and a processor. The processor acquires a plurality of pieces of first image data and second image data with an exposure time period longer than an exposure time period of the first image data from the image pickup device, detects a motion region by using the first image data and the second image data, and acquires motion detection information by using the plurality of pieces of first image data. The processor changes a synthesis method in accordance with whether the motion region is detected and generates one piece of synthesized image data.

Abstract: Provided is a method of molding an optical element. The method includes: inserting a neck portion provided in each of an upper mold and a lower mold into a hole portion provided in a side surface mold; replacing an atmosphere in the hole portion of the side surface mold with an inert gas through a groove communicating between either an upper end surface or a lower end surface of the side surface mold and the hole portion of the side surface mold; heating a molding material disposed in the hole portion of the side surface mold; and bringing the upper mold and the side surface mold, and the lower mold relatively close to each other to press molding the molding material to obtain an optical element.

Abstract: An endoscope system according to the present invention includes: an illumination light source that emits illumination light for illuminating an object; a therapeutic light source that emits therapeutic light for causing a photoreactive reagent accumulated in a treatment target site to react; a guide light source that emits guide light having a wavelength shorter than a wavelength band of the therapeutic light source; an imager that captures an optical image, the imager including an optical filter that cuts light in the wavelength band of the therapeutic light and transmits a part of white light, the guide light, and fluorescence emitted by the reagent; a controller that controls emission timings of the illumination light source, the therapeutic light source, and the guide light source; and an image processor that generates an image on the basis of an optical image obtained by light emitted from the illumination light source, the therapeutic light source, and the guide light source, in which the controller cau

Abstract: An endoscope cap includes: a light-transmissive portion having a tubular shape made of a light-transmissive material, the light-transmissive portion including a coating layer on a periphery of the tubular shape; and a tubular portion configured to connect the light-transmissive portion to a distal end of an insertion portion of an endoscope, the coating layer being configured to reflect light in a wavelength band for light treatment of a body portion and transmit light in a wavelength band for white light image capturing.

Abstract: An endoscope has a configuration in which a wire guide tube is configured as a tube consecutively formed of polyetheretherketone from one end side to another end side, an opening penetrating is provided in a radial direction at part of a wall portion of a second coupling member into which an end part of the wire guide tube is inserted, a concave portion corresponding to the opening is provided at an outer peripheral surface of the end part of the wire guide tube, and a bonding agent integrally fills the opening and the concave portion to connect the wire guide tube and a coupling portion (the second coupling member).

Abstract: A stent delivery system includes: a stent delivery device configured to carry a stent to a stenosis and indwell the stent; an observation device configured to observe the stenosis; and one or more processors, each comprising hardware, the one or more processors being configured to: acquire an observation image from the observation device; and determine a target placement position for placing the stent in the stenosis based on the observation image.

Abstract: A light source device includes a plurality of light emitters, an optical system configured to combine light from the light emitters, a wavelength selective filter located on an optical path of the optical system, and an optical sensor configured to receive light from one light emitter among the light emitters through an optical filter. The optical filter has a wavelength selection characteristic corresponding to a wavelength selection characteristic of the wavelength selective filter.

Abstract: The medical system includes a basket treatment tool a processor. The processor determines, one or more of: a first determination, based on a transmissive image including the biliary duct, of whether a size of a gallstone allows the basket treatment tool to remove the gallstone from the papillary orifice, or a second determination, based on a resistance when the basket treatment tool is pulled, of whether the resistance allows the basket treatment tool to remove the gallstone from the papillary orifice; and controls the basket treatment tool to remove the gallstone from the papillary orifice when one or more of the first determination or the second determination determines that the gallstone is removable from the papillary orifice.

Abstract: An movement assistance system includes a processor. The processor detects a position in picked-up images of an image of an image pickup target, causes a memory to store the position, estimates a change in the position of the image pickup target, estimates the position of the image pickup target and performs control for causing a display apparatus to display an estimation result of the position of the image pickup target, when detecting a disappearance state in which the image of the image pickup target is not detected, and performs control for causing the display apparatus not to display the estimation result of the position of the image pickup target when detecting, after the image pickup target is brought into the disappearance state, that a position indicated by the estimation result of the position of the image pickup target is a position inside an output determination region.