Abstract: An endoscopic imaging device includes an objective optical system, an imaging element, a transmissive protective substrate, an optical member, and a circuit board. The objective optical system imports observation light from a subject. The imaging element captures an image of the observation light. The transmissive protective substrate is disposed on an imaging surface of the imaging element with an air gap interposed therebetween. The optical member is disposed between the objective optical system and the transmissive protective substrate to guide light from the objective optical system to the imaging surface. The circuit board is disposed so that an area where an electronic component is mounted faces the optical member and the electronic component is brought into contact with an outer surface of the optical member.

Abstract: An endoscope includes an insertion portion which has a bending portion, a wire which is fixed to an end of a distal side of the bending portion and is pushed along the insertion portion, an operating portion which is provided on a proximal side of the insertion portion opposite to the bending portion, and a wire-connecting member which is interposed in the wire between the insertion portion and the operating portion to form an allowance in a in which the wire is pushed and pulled, wherein a portion of the wire between the wire-receiving member and the wire-connecting member is inserted into the coil spring so that the coil covers a surface of the portion of the wire.

Abstract: An endoscopic imaging device includes an objective optical system, an imaging element, a transmissive protective substrate, an optical member, and a circuit board. The objective optical system imports observation light from a subject. The imaging element captures an image of the observation light. The transmissive protective substrate is disposed on an imaging surface of the imaging element with an air gap interposed therebetween. The optical member is disposed between the objective optical system and the transmissive protective substrate to guide light from the objective optical system to the imaging surface. The circuit board is disposed so that an area where an electronic component is mounted faces the optical member and the electronic component is brought into contact with an outer surface of the optical member.

Abstract: A medical apparatus includes an insertion unit and a light source which supplies light into the insertion unit. A surface of the insertion unit includes: a first and second irradiation portions, a second irradiation portions, and an observation window. wherein each of the first and second irradiation portions has a pair of irradiation windows which emits the light, wherein when a border line bisects a front end surface of the insertion unit through the center point of the observation window, the pair of the irradiation windows are disposed on the both side of the front end surface sandwiching the border line, and wherein a fluorescent body emitting light by the excitation of the light supplied from the light source unit is disposed behind each of optical paths, and the white light is formed by the light supplied to the first irradiation portions and emission in the fluorescent body.

Abstract: An endoscopic flow-passage confluent structure that connects a gas-feed tube and a liquid-feed tube provided in an endoscope to a confluent tube communicating with an ejection nozzle arranged at a tip of an insertion portion of the endoscope and for ejecting a cleaning fluid toward a viewing window of the endoscope, the structure comprising: (i) a passage connection member having one end opened with two upstream-passage receiving bores in which the gas-feed and liquid-feed tubes are respectively inserted and fixed, other end opened with one downstream-passage receiving bore, and an intermediate region that communicates the upstream-passage receiving bores with downstream-passage receiving bore and comprises a passage confluent space having a diameter increasing in a taper-form in a direction of from the downstream-passage receiving bore toward the upstream-passage receiving bores; and (ii) a coupler pipe having one end connected to the downstream-passage receiving bore and other end connected with a base of t

Abstract: In an endoscope system, a nasal endoscope for entry in a first external nostril of a patient includes a first elongated tube, a first distal portion thereof, an imaging window, an instrument channel, a handle section, and a steering section. An assist device for entry in a second nostril includes a second elongated tube, a second distal portion thereof, and a working channel with a greater inner diameter than the instrument channel. A retaining device retains the second distal portion on the first distal portion removably and equidirectionally, to cause a second distal end surface to contact a lower peripheral part outside a first distal end surface lower than a horizontal line passing a center point of the imaging window when the first distal end surface is viewed in a state of orienting an upper side of steering of the steering section in an upward direction.

Abstract: An endoscope includes an insertion portion which has a bending portion, a wire which is fixed to an end of a distal side of the bending portion and is pushed along the insertion portion, an operating portion which is provided on a proximal side of the insertion portion opposite to the bending portion, and a wire-connecting member which is interposed in the wire between the insertion portion and the operating portion to form an allowance in a in which the wire is pushed and pulled, wherein a portion of the wire between the wire-receiving member and the wire-connecting member is inserted into the coil spring so that the coil covers a surface of the portion of the wire.

Abstract: An endoscopic flow-passage confluent structure that connects a gas-feed tube and a liquid-feed tube provided in an endoscope to a confluent tube communicating with an ejection nozzle arranged at a tip of an insertion portion of the endoscope and for ejecting a cleaning fluid toward a viewing window of the endoscope, the structure comprising: (i) a passage connection member having one end opened with two upstream-passage receiving bores in which the gas-feed and liquid-feed tubes are respectively inserted and fixed, other end opened with one downstream-passage receiving bore, and an intermediate region that communicates the upstream-passage receiving bores with downstream-passage receiving bore and comprises a passage confluent space having a diameter increasing in a taper-form in a direction of from the downstream-passage receiving bore toward the upstream-passage receiving bores; and (ii) a coupler pipe having one end connected to the downstream-passage receiving bore and other end connected with a base of t

Abstract: The bending part of an endoscope is constructed in which plural joint rings are connected with each other. The adjacent joint rings are rotatably connected with rivets after overlapping a connecting part with another connecting part. A guide hole is formed at the inner head of the rivet, and a bend-control wire is inserted through the guide hole whereby the bend-control wire is guided. A notch and a hole are formed at the end and the base of the connecting part, respectively; therefor the bend-control wire is prevented from coming into contact with the connecting part.

Abstract: A tip component is provided at an extremity of an insertion part of an endoscope. The tip component includes a body member, in which a forceps aperture is formed. A forceps tube is arranged inside the insertion part. A hard part is formed at the end of the forceps tube, at which the forceps tube is sandwiched between an inner cylinder and an outer cylinder. The hard part is inserted into the forceps aperture of the body of the tip component and is fixed with a screw. A connecting part between the forceps tube and the forceps aperture is thus formed in the body of the tip component, and the length of the tip component is reduced as a result.

Abstract: Novel triazolo derivatives represented by the following formula and pharmaceutically acceptable salts thereof, as well as chemokine inhibitors containing the same as an effective component. These are useful as therapeutic agents for allergic diseases such as bronchial asthma and atopic dermatitis; therapeutic agents for inflammatory diseases such as chronic rheumatoid arthritis; therapeutic agents for autoimmune diseases such as ulcerative colitis and nephritis; and as anti-AIDS drugs.

Abstract: A curve control wire, which is inserted in a curved part of an endoscope, is inserted and guided in guide holes of connecting pins, which are rotatably provided inside a plurality of joint rings. A body of the connecting pin is inserted into a hole formed in the joint ring, and the connecting pin body is provided with a flange for preventing the body from falling into the inside of the joint ring and an annular plate for preventing the body from falling to the outside of the joint ring. By such a structure, the curve control wire can be easily inserted into the guide holes. A protection member is attached to the end of the connecting pin. The outer peripheral face of the protection member is made of a material softer than internal members, which are arranged inside the curved part, such as a light guide, a signal cable, a forceps tube, and an air and water supply tube. Thus, the internal members are prevented from being damaged.

Abstract: The bending part of an endoscope is constructed in which plural joint rings are connected with each other. The adjacent joint rings are rotatably connected with rivets after overlapping a connecting part with another connecting part. A guide hole is formed at the inner head of the rivet, and a bend-control wire is inserted through the guide hole whereby the bend-control wire is guided. A notch and a hole are formed at the end and the base of the connecting part, respectively; therefor the bend-control wire is prevented from coming into contact with the connecting part.

Abstract: An anti-fogging lens device, having a plural number of optical glass lens elements mounted within a lens barrel, including a first lens element located in a foremost position on the side of a subject and a second lens element located behind and at a space from the first lens element. A spacer ring is fitted in the lens barrel to set apart the first and second lens elements by a gap space of a predetermined width. The spacer ring is formed of a material having higher thermal conductivity than the lens elements and, on the inner peripheral side thereof, provided with a moisture depositing surface which is formed in a non-flat shape to increase its surface area. The lens barrel is fitted in a cylindrical member, and a seal pocket, to be packed with a seal material, is formed between the lens barrel and the cylindrical member to stop clearances between these two members with a secure hermetical seal.

Abstract: An optical system for electronic endoscopes which makes it possible to thin tips of endoscopes and minimize illumination ununiformities. In this optical system, a prism having a half transmissive mirror film formed thereon is disposed on a rear side of an objective optical system, a CCD is optically connected to a reflecting optical path in which rays are flexed at a right angle and a light guide is connected to a straight travelling optical path. A light diffusing plate and a condenser lens are arranged between the light guide and the prism. This arrangement makes it possible to dispose the objective optical system in series with the light guide in a tip of endoscope, thereby enabling to thin the tip. Further, the diffusing plate prevents an image of a shape of an end surface of an optical fiber bundle from being projected reversely to an image pickup device.