Abstract: An electric motor includes a cylindrical housing that houses a stator and a rotor. The housing includes a cooling liquid channel to allow a cooling liquid to flow between a first cooling liquid port and a second cooling liquid port. The cooling liquid channel includes a first annular channel and a second annular channel which respectively include a pair of coil ends therein, a first communication channel, and a second communication channel. A first end portion of the first communication channel is located adjacent to but separated from the first annular channel and communicates with the first cooling liquid port. A second end portion of the first communication channel communicates with the second annular channel. The second communication channel extends between the first and second annular channels so as to communicate the first and second annular channels with each other.

Abstract: An electric motor includes a stator including a stator core and a coil, a rotor, a first cylindrical wall, and a metal housing. A slot of the stator core includes a coil housing. The coil includes a coil end that protrudes in an axial direction from an axial end surface of the stator core. The first cylindrical wall is in contact with the axial end surface of the stator core. A second cylindrical wall of the housing is inserted into the first cylindrical wall. The housing demarcates a coil end cooling channel in which a cooling liquid to cool the coil end flows. The coil end cooling channel is located radially outward from the first cylindrical wall and the second cylindrical wall. An inner peripheral surface of a metal ring included in the first cylindrical wall is fitted to an outer peripheral surface of the second cylindrical wall.

Abstract: An electric motor includes a stator, a rotor, and a housing. A slot in a stator core of the stator includes a coil housing and a slot opening that opens the coil housing radially inward. A coil includes a coil end that protrudes in an axial direction from an axial end surface of the stator core. A plastic portion that is integral with the stator core includes a blocking portion that extends in the axial direction so as to block the slot opening, and a cylindrical wall that is coupled with the blocking portion. The cylindrical wall protrudes in the axial direction from the axial end surface of the stator core. The housing defines a coil end cooling channel in which a cooling liquid flows to cool the coil end, at a location radially outward from the cylindrical wall.

Abstract: A video processor includes: an image processing section including a front image enhancement processing section configured to perform first enhancement processing on a front image acquired from a front area in a subject by using an endoscope including an insertion portion which is inserted into the subject, and a side image enhancement processing section configured to perform second enhancement processing on a side image acquired from a side area located lateral to the front area by using the endoscope; and a control section configured to individually set an enhancement level of enhancement processing performed by the front image enhancement processing section and an enhancement level of enhancement processing performed by the side image enhancement processing section.

Abstract: An endoscope of the invention includes: an insertion portion; a distal end portion; a pair of first observation image acquiring sections; a second observation image acquiring section; a pair of nozzles, each of which includes a spouting port for spouting fluid toward each of the pair of first observation image acquiring sections; a pair of first protruding portions, each of which is located close to the front surface of the distal end portion and has a maximum dimension in the radial direction larger than a dimension in the radial direction of each of the nozzles, and a pair of second protruding portions, each of which is located farther from the front surface of the distal end portion and has a maximum dimension in the radial direction larger than the dimension in the radial direction of each of the nozzles.

Abstract: An endoscope comprises an insertion portion having a distal-end surface configured to be inserted into a body. The insertion portion includes a suction port being formed in the distal-end surface for drawing in liquid from the body. A protrusive portion having a passageway formed thereto. The protrusive portion is protruded from the distal-end surface. The passageway is formed in the protrusive portion to remove the liquid positioned in facing relationship with respect to the distal-end surface and opposite of the suction port across the protrusive portion toward the suction port.

Abstract: A video processor includes: an image processing section including a front image enhancement processing section configured to perform first enhancement processing on a front image acquired from a front area in a subject by using an endoscope including an insertion portion which is inserted into the subject, and a side image enhancement processing section configured to perform second enhancement processing on a side image acquired from a side area located lateral to the front area by using the endoscope; and a control section configured to individually set an enhancement level of enhancement processing performed by the front image enhancement processing section and an enhancement level of enhancement processing performed by the side image enhancement processing section.

Abstract: An endoscope of the invention includes: an insertion portion; a distal end portion; a pair of first observation image acquiring sections; a second observation image acquiring section; a pair of nozzles, each of which includes a spouting port for spouting fluid toward each of the pair of first observation image acquiring sections; a pair of first protruding portions, each of which is located close to the front surface of the distal end portion and has a maximum dimension in the radial direction larger than a dimension in the radial direction of each of the nozzles, and a pair of second protruding portions, each of which is located farther from the front surface of the distal end portion and has a maximum dimension in the radial direction larger than the dimension in the radial direction of each of the nozzles.

Abstract: A vehicle includes an electric motor and a clutch disposed on a drive shaft. The electric motor is disposed on one side from a middle of the vehicle in the vehicle width direction, while the clutch and a sprocket are disposed on a second side from the middle of the vehicle in the vehicle width direction. The clutch is connected to a clutch lever so that the state of engagement of the clutch is changed in response to an operation of the clutch lever. It is thus possible to increase the degree of freedom in torque transmission control by a driver, to increase an output torque of the electric motor, and to reduce the size of the clutch.

Abstract: The rear end side of treatment equipment-side duct which enables treatment equipment provided within an insertion unit to be inserted, and which also serves as a suction duct, is disposed generally in parallel with the tip side of a suction-side duct extending forward from a universal cable side so as to be an opening end, and both opening ends are detachably attached with a filter unit in which a forceps plug portion serving as a suction duct opening, and a filter portion for retrieving (storing) tissue by suction are provided, and a suction switchover valve for performing a suction switchover operation is provided at the backward side thereof, thereby enabling retrieval of tissue without influence of the periphery of the suction switchover valve. Thus, defects due to a long duct can be eliminated, and tissue can be retrieved without influence of the periphery of the suction switchover valve.

Abstract: An endoscope of an endoscope system includes a channel of which a distal end forms a distal opening at a distal end of an insertion portion, of which a proximal end forms a proximal opening at an operating portion, and used for at least suction, and a suction duct of which a distal end forms a suction opening at the operating portion and of which a proximal end is connected to a suction device. An endoscopic accessory includes a capture portion to be connected to an accessory insertion portion and detachably attached to the operating portion of the endoscope, and the capture portion includes a communication path to communicate the proximal opening with the suction opening when the capture portion is attached to the endoscope, and a capture unit interposed in the communication path and to capture the tissue being sucked from the channel into the suction duct.

Abstract: A medical apparatus includes an insertion-section-side body of an endoscope, which serves as a first member, a power unit which serves as a second member having an outer peripheral portion which is surrounded by walls, and having a reception chamber to which the insertion-section-side body is detachably connected, a fluid connection unit which is connected to the insertion-section-side body on an outside of the reception chamber, and a non-fluid connection unit which is connected to the insertion-section-side body on an inside of the reception chamber. Thereby, a medical apparatus is provided, wherein a fluid connection unit for fluid connection of, e.g. air feed and water feed, can be shut off, by a simple structure, from a non-fluid connection unit for non-fluid connection of, e.g. an illumination optical system, a signal line and a driving force system, and the reliability of a water-proof measure is high.

Abstract: An endoscope of an endoscope system includes a channel of which a distal end forms a distal opening at a distal end of an insertion portion, of which a proximal end forms a proximal opening at an operating portion, and used for at least suction, and a suction duct of which a distal end forms a suction opening at the operating portion and of which a proximal end is connected to a suction device. An endoscopic accessory includes a capture portion to be connected to an accessory insertion portion and detachably attached to the operating portion of the endoscope, and the capture portion includes a communication path to communicate the proximal opening with the suction opening when the capture portion is attached to the endoscope, and a capture unit interposed in the communication path and to capture the tissue being sucked from the channel into the suction duct.

Abstract: An adapter for an endoscope of the present invention includes: a locking device for attaching and detaching that attaches and locks this adapter for an endoscope onto a predefined position on an endoscope control part; and a first treatment tool locking device that keeps a treatment tool at a first predefined position. Furthermore, at the first predefined position, a guidewire entry aperture of the treatment tool and an entry aperture of a forceps plug are separated in such a way as to face each other along substantially the same line.

Abstract: The rear end side of treatment equipment-side duct which enables treatment equipment provided within an insertion unit to be inserted, and which also serves as a suction duct, is disposed generally in parallel with the tip side of a suction-side duct extending forward from a universal cable side so as to be an opening end, and both opening ends are detachably attached with a filter unit in which a forceps plug portion serving as a suction duct opening, and a filter portion for retrieving (storing) tissue by suction are provided, and a suction switchover valve for performing a suction switchover operation is provided at the backward side thereof, thereby enabling retrieval of tissue without influence of the periphery of the suction switchover valve. Thus, defects due to a long duct can be eliminated, and tissue can be retrieved without influence of the periphery of the suction switchover valve.

Abstract: An adapter for an endoscope of the present invention includes: a locking device for attaching and detaching that attaches and locks this adapter for an endoscope onto a predefined position on an endoscope control part; and a first treatment tool locking device that keeps a treatment tool at a first predefined position. Furthermore, at the first predefined position, a guidewire entry aperture of the treatment tool and an entry aperture of a forceps plug are separated in such a way as to face each other along substantially the same line.

Abstract: A one-way clutch comprises a plurality of rollers, a retainer having the same number of roller pockets as rollers, a cylindrical shell having the same number of cam grooves as rollers, and springs for normally biasing the rollers toward the cam grooves. The cam grooves are provided at the axially intermediate portion of the shell. The shell is provided at one end with a radially inwardly-turned flange and at the other end with a cylindrical boss portion having a smooth inner surface free of cam grooves. The retainer includes a pair of annular portions at either end and an axially intermediate portion provided with roller pockets. The annular portion which is inserted into the boss portion of the shell has a smooth cylindrical outer surface dimensioned to be pressingly fitted to the boss portion. Thus there are no gaps between the retainer and the shell at the boss portion of the shell, thereby sealing that end of the shell and preventing the outflow of grease and the entry of dust.