A light source apparatus includes a light source optically connectable to a scope including a light guide configured to guide light, and first and second illumination light emission units configured to radiate illumination light based on the guided light on a subject, and a light quantity distribution changing device disposed on an optical path of the light emitted from the light source. The light quantity distribution changing device is configured to control a light quantity of the light brought into each of the first illumination light emission unit and the second illumination light emission unit, so as to change a light quantity distribution of the illumination light radiated on the subject.

An endoscope system includes: a light source that is configured to emit primary light; plural illuminators that are configured to be irradiated with the primary light to emit plural respective illumination light generated based on the radiated primary light toward an observation object so that at least part of the plural illumination light overlap on the observation object; and an adjuster that is configured to desirably adjust a ratio of light quantities of the primary light that travels from the light source to the respective illuminators, so as to distribute the primary light to the respective illuminators.

Architecture and methodology of imaging systems are provided for multispectral tissue imaging with various embodiments. The architectural designs comprise hardware of multispectral light engines and cameras and software of image acquisition, processing, modeling, visualization, and quantification. Embodiments of imaging hardware in a medical device can include a light engine of multiple sources for noncoherent light for visible and fluorescence imaging and coherent light of very narrow bandwidths for laser speckle imaging. The imaging software can include anatomical imaging by visible light, blood perfusion imaging by fluorophores in blood, blood flow distribution imaging by light of high coherence, blood oxygen saturation imaging by light absorption in tissues and tissue composition imaging by light scattering in tissues based on the radiative transfer model of light-tissue interaction. Form factors in medical devices include endoscopic, laparoscopic, arthroscopic devices in medical tower or robot systems, cart device, and handheld scanning or tablet devices.

An intraoral measurement device includes: a device main body that holds a base end side of a prism by a housing, the housing accommodating an illumination member and an imaging member, a cover member that is attached to the device main body in a state of covering, with a space part interposed in between, a distal end side of the prism arranged to face a measurement target, in which a part arranged to face the measurement target is formed by a light transmission window; and a heat transfer member that extends from the device main body along a non-optical surface of the prism, and transfers heat of the device main body to the light transmission window through abutment of a protruding end provided to protrude from the prism against the light transmission window of the cover member.

A medical signal processing device includes: an acquisition unit is configured to acquire a first image signal acquired by emission of first light onto an object, and a second image signal acquired by emission of second light onto the object, the first light being in a wavelength band including visible light, and the second light exciting a fluorescent substance included in the object; a detection unit configured to detect each of a signal level of the visible light included in the first image signal and a signal level of fluorescence included in the second image signal; and a calculation unit configured to calculate a correction coefficient to correct the signal level of the fluorescence by using a result of the detection by the detection unit.

The present invention provides a protective sheath, a hysteroscope equipped therewith, and a nephroscope equipped with the same, used to prevent contaminants from contaminating electrical connecting lines connected to the endoscope. The protective sheath includes an inner sheath (1) and an outer sheath (2), which are sleeved together, the outer sheath (2) has a cylindrical structure, the inner sheath (1) includes a straight cylindrical portion and a bell mouth portion, the bell mouth portion is located on an insertion end side of the inner sheath (1), a side wall of the bell mouth portion is provided with a plurality of grooves extending from the bell mouth portion to the straight cylindrical portion, and a plurality of elastic sheets (12) are formed at the insertion end of the inner sheath (1); a connecting portion cooperating with a self-locking quick connector (7) is formed on the inner wall of each elastic sheet (12); and a hollow cavity is disposed between the inner sheath (1) and the outer sheath (2), and a compressed waterproof jacket (3) is disposed in the hollow cavity, one end of the waterproof jacket (3) is fixedly sheathed on the inner sheath (1), and the other end of the waterproof jacket (3) can be pulled through a non-insertion end of the protective sheath. The protective sheath is lightweight, compact, and easy to operate. The protective sheath effectively protects the electrical connecting lines from being contaminated during use, thereby preventing short circuit, contamination and other situations, furthermore, the protective sheath is low in production cost and can be used as a disposable medical device.

Provided is a cooling device of an endoscope device. The cooling device includes: a box; a first communicating hole that is a hole provided in the box; a second communicating hole that is a hole provided in the box; a second fan that is provided at the second communicating hole, the second fan being configured to guide gas to an exterior of the box through the second communicating hole to generate an airflow in the box, the gas having introduced into the box from the first communicating hole; and a duct configured to house a heat generator to be cooled, the duct being positioned in the box to allow the airflow to pass through an inside of the duct.

An endoscope device includes: a light source capable of switching an optical spectrum of illumination light; an imaging device configured to acquire an image by receiving reflection light of the illumination light; an image processor configured to determine whether or not visibility deterioration has occurred within a visual field of the image acquisition section due to a fragment of a calculus crushed by being irradiated with a laser beam from a laser pulse generator; and a controller configured to control the light source based on a determination result obtained by the image processor. The controller causes the light source to emit white light as the illumination light in response to the image processor determining that the visibility deterioration has not occurred, and switches the illumination light emitted from the light source to light in a blue region in response to the image processor determining that the visibility deterioration has occurred.

A surgical retractor including a blade molded from a polymer having at least a predetermined flexural strength, a handle, and a deepened portion connecting a proximal end of the blade to the handle, wherein the deepened portion increases in depth from the proximal end of the blade toward the handle, and wherein the blade, being molded from the polymer, and the deepened portion are configured such that the blade deforms less than 10 mm under 15 lbs of force applied thereto

An endoscope system includes at least any one of a processor device that is attachable to and detachable from an endoscope or a light source device that is attachable to and detachable from the endoscope. In a case where the endoscope is mounted on the processor device or the light source device, the processor device or the light source device performs a request sequence in which a request signal, for requesting a start of execution of encoding processing with respect to digital image signals, is transmitted to the endoscope.