Abstract: An endoscope includes a first flat surface formed at a distal end portion of an insertion part to be inserted into a subject, and orthogonal to an axial direction of the insertion part, an observation window provided at the distal end portion for allowing image light of the subject to be taken therethrough, with a surface of the observation window as a light incidence plane, an illumination window provided at the distal end portion to irradiate a subject with illumination light, a fluid jetting nozzle arranged at the first flat surface to jet a fluid toward the observation window and fixed at the distal end portion of the insertion part, and an inclined surface formed around the observation window and arranged at a position that faces the fluid jetting nozzle.

Abstract: An endoscope includes a first flat surface formed at a distal end portion of an insertion part to be inserted into a subject, and orthogonal to an axial direction of the insertion part an observation window provided at the distal end portion for allowing image light of the subject to be taken therethrough, with the surface of the observation window as a light incidence plane, an illumination window provided at the distal end portion to irradiate a subject with illumination light, a fluid jetting nozzle arranged at the first flat surface to jet a fluid toward the observation window, and an inclined surface formed around the observation window and arranged at a position that faces the fluid jetting nozzle, wherein the distal end portion is formed with a second flat surface arranged on the distal end side of the first flat surface and parallel to the first flat surface.

Abstract: The endoscope includes: a rotating shaft in a distal end portion body of an insertion portion; an elevator which is coupled with one end of the rotating shaft; an elevator erecting lever which is coupled with the other end; an operating wire which rotates the rotating shaft through the elevator erecting lever to erect the elevator; a partition wall including a holding hole to support the rotating shaft; and a seal member disposed between the holding hole and the rotating shaft. The configuration of the rotating shaft and a positional relation between the rotating shaft and the seal member are improved so as to reduce time and labor taken for cleaning processing of the endoscope.

Abstract: An endoscope which can reduce time and labor for cleaning processing is provided. The endoscope includes: a distal end portion body which is provided on the distal end side of an insertion portion; a rotating shaft which is rotatably supported in the distal end portion body; an elevator which is coupled with one end of the rotating shaft; an elevator erecting lever which is coupled with the other end of the rotating shaft; an operating wire which rotates the rotating shaft through the elevator erecting lever by operation of an operating member and raises the elevator; a partition wall which includes a holding hole to support the rotating shaft; and a seal member which is disposed between the holding hole and the rotating shaft, at least part of the seal member being exposed to a surface side facing the elevator of the partition wall.

Abstract: According to an endoscope according to an aspect of the present invention, in a cap, an opening window which opens an opening portion on an upper surface side of an elevator housing slit n a state attached to a distal end portion body and a partition wall portion which closes an opening portion on a lower surface side are formed, and in a state in which the cap is attached to the distal end portion body, reclining of an elevator is regulated by the partition wall portion. Moreover, an opening portion from the upper surface to the lower surface through a front surface of the distal end portion body is extended and open, and thus, an exposed range of the elevator is wide, and the elevator can be cleaned rapidly and easily.

Abstract: The endoscope is provided with the forceps elevator which is erectably provided in the distal end part of the insertion part of the endoscope and guides a treatment tool led out from the distal end part. The forceps elevator has an erecting motion range from a minimum angular position to a maximum angular position. If a state in which the treatment tool is not led out from the distal end part is assumed, the erecting operation lever for operating the movement of the forceps elevator has: a first operation range where the erecting operation lever is operated within the erecting motion range of the forceps elevator; and a second operation range where the erecting operation lever is operated beyond the first operation range. When the erecting operation lever is operated into the second operation range, the locking mechanism locks the movement of the erecting operation lever.

Abstract: A drainage tube insertion tool for use in an endoscope, comprising: a drainage tube configured to slidably fit on an outer surface of an insertion portion of the endoscope, and a pusher tube configured to slidably fit on the outer surface of the insertion portion of the endoscope and which pushes the drainage tube, wherein a notch is formed in a side wall portion of the pusher tube along a longitudinal axis direction, and the pusher tube is fitted on the outer surface of the insertion portion upon making a side surface of the insertion portion extend through the notch, and the drainage tube is inserted into a predetermined lumen of a body cavity by pushing the drainage tube out of a distal end of the insertion portion with the pusher tube.

Abstract: A distal end portion successively provided from an insertion part distal end of an endoscope is provided with an air supply and water supply nozzle, an observation window, and illumination windows, and are formed with mutually parallel first and second flat surfaces. The surface of the observation window is disposed at the same position as the second flat surface. An inclined surface that connects the first flat surface and the second flat surface together is formed at a position that faces the air supply and water supply nozzle. Fluid guide surfaces are formed on both sides of the inclined surface. The fluid guide surfaces incline toward the illumination windows. A fluid jetted from the air supply and water supply nozzle impacts against the inclined surface, spreads to the observation window, and is guided to the fluid guide surfaces, and flows to the illumination windows.

Abstract: An endoscope includes a first flat surface formed at a distal end portion of an insertion part to be inserted into a subject, and orthogonal to an axial direction of the insertion part an observation window provided at the distal end portion for allowing image light of the subject to be taken therethrough, with the surface of the observation window as a light incidence plane, an illumination window provided at the distal end portion to irradiate a subject with illumination light, a fluid jetting nozzle arranged at the first flat surface to jet a fluid toward the observation window, and an inclined surface formed around the observation window and arranged at a position that faces the fluid jetting nozzle, wherein the distal end portion is formed with a second flat surface arranged on the distal end side of the first flat surface and parallel to the first flat surface.

Abstract: An insertion assisting tool for an endoscope comprising: a tubular body having a passage through which an insertion part of an endoscope is inserted; a sidewall opening part which is provided in a sidewall part of the tubular body on a distal end side of the tubular body and through which a distal end part of the insertion part can be fed, the sidewall opening part having an edge part receiving and supporting the insertion part when the distal end part of the insertion part is fed from the sidewall opening part to be guided into a body cavity; a supply port formed at the edge part of the sidewall opening part; and a lubricating liquid supply passage which is in communication with the supply port to supply lubricating liquid to the supply port.

Abstract: A drainage tube insertion tool for use in an endoscope, comprising: a drainage tube configured to slidably fit on an outer surface of an insertion portion of the endoscope, and a pusher tube configured to slidably fit on the outer surface of the insertion portion of the endoscope and which pushes the drainage tube, wherein a notch is formed in a side wall portion of the pusher tube along a longitudinal axis direction, and the pusher tube is fitted on the outer surface of the insertion portion upon making a side surface of the insertion portion extend through the notch, and the drainage tube is inserted into a predetermined lumen of a body cavity by pushing the drainage tube out of a distal end of the insertion portion with the pusher tube.

Abstract: An endoscopic device provided with an observation window in a distal end face of an insertion part to be inserted into a subject, an observational direction from the observation window being substantially identical with a longitudinal axis of the insertion part, the endoscope comprising: a concave guide surface disposed in a distal lateral portion of the insertion part so as to extend along a longitudinal direction of the insertion part; and a bending part configured to be bendable with the guide surface inside, wherein a treatment instrument fed from a distal end exit of a treatment instrument passage disposed closer to a proximal end of the insertion part than the guide surface is guided along the guide surface when the bending part is bent.

Abstract: A distal end portion successively provided from an insertion part distal end of an endoscope is provided with an air supply and water supply nozzle, an observation window, and illumination windows, and are formed with mutually parallel first and second flat surfaces. The surface of the observation window is disposed at the same position as the second flat surface. An inclined surface that connects the first flat surface and the second flat surface together is formed at a position that faces the air supply and water supply nozzle. Fluid guide surfaces are formed on both sides of the inclined surface. The fluid guide surfaces incline toward the illumination windows. A fluid jetted from the air supply and water supply nozzle impacts against the inclined surface, spreads to the observation window, and is guided to the fluid guide surfaces, and flows to the illumination windows.

Abstract: A side viewing endoscope system is discloses that a mother endoscope of a side viewing type provided an endoscopic observation means is disposed on a side surface of a rigid distal end portion, a instrument rising chamber installed of a instrument riser member for rising up or sinking down of a treatment instrument in the rigid distal end portion, a biopsy channel provided through an axial direction of the insertion section being communicated with said instrument rising chamber, a daughter endoscope having a slender insertion section being inserted into the biopsy channel and having a viewing field in a forward direction of the distal end of the slender insertion section, a perforation window formed at the rigid distal end portion and having a viewing field of the forward direction of the biopsy channel, and the distal end portion being introduced through the biopsy channel at a position not to be protruded from the outer surface of the rigid distal end.

Abstract: In a cleaning device (9) comprising a cleaning portion (10) having a cleaning surface (13) and an opposing surface opposite the cleaning surface (13), a support arm (11) having a handle portion (16), and a pivot (12) for pivotally supporting the support arm (11) on the opposing surface, the cleaning surface (13) of the cleaning portion (16) comprises an adhesive surface (17) and a cleaning cloth surface (18), and wherein the adhesive surface (17) and the cleaning cloth surface (18) can individually come into surface contact with a surface to be cleaned, and a stopper (19) for restricting movement of the handle portion (16) relative to the pivot (12), wherein the cleaning cloth surface (18) can contact wherein the surface to be cleaned when the support arm (11) is tilted within a predetermined angle range relative to the surface having the pivot (12), and the adhesive surface (17) can contact the surface to be cleaned when the support arm (11) is tilted beyond the predetermined angle range relative to the surf

Abstract: In a cleaning device (9) comprising a cleaning portion (10) having a cleaning surface (13) and an opposing surface opposite the cleaning surface (13), a support arm (11) having a handle portion (16), and a pivot (12) for pivotally supporting the support arm (11) on the opposing surface, the cleaning surface (13) of the cleaning portion (16) comprises an adhesive surface (17) and a cleaning cloth surface (18), and wherein the adhesive surface (17) and the cleaning cloth surface (18) can individually come into surface contact with a surface to be cleaned, and a stopper (19) for restricting movement of the handle portion (16) relative to the pivot (12), wherein the cleaning cloth surface (18) can contact wherein the surface to be cleaned when the support arm (11) is tilted within a predetermined angle range relative to the surface having the pivot (12), and the adhesive surface (17) can contact the surface to be cleaned when the support arm (11) is tilted beyond the predetermined angle range relative to the surf