Abstract: Provided are a treatment tool elevating mechanism and an ultrasonic endoscope capable of restraining an increase in diameter of an endoscope and bearing a load.

Abstract: There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof.

Abstract: An endoscope that can improve the cleanliness of a peripheral portion of an elevator is provided. The endoscope includes an insertion part that is provided with a treatment tool insertion channel, a distal end portion main body, an elevator housing portion that is provided in the distal end portion main body and is open in a first direction, a treatment tool outlet that is open to an inside of the elevator housing portion and communicates with the treatment tool insertion channel, an elevator that is disposed inside the elevator housing portion, an ultrasonic transducer that has a plurality of ultrasonic vibrators, and a signal cable that is connected to the plurality of ultrasonic transducers. The elevator housing portion and a cable insertion hole through which the signal cable is inserted are disposed in different regions.

Abstract: There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof.

Abstract: An endoscope including an insertion unit, a treatment tool insertion channel, a treatment tool outlet, an elevator, and a plurality of wall is provided. The insertion unit has a soft part, a bendable part, and a distal end part arranged in order from a proximal end side toward a distal end side in a direction of a longitudinal axis. The treatment tool insertion channel is inserted into the insertion unit. The treatment tool outlet is connected to a distal end of the treatment tool insertion channel. The elevator is rotatable about a rotating shaft between a standing position and a fallen position, and includes a guide surface guiding a treatment tool led out of the treatment tool outlet. The plurality of walls encloses a space in which the elevator is housed, wherein a first wall, which is opposite to the guide surface in a case where the elevator is in the standing position, among the plurality of walls is made of a material harder than at least a second wall among the plurality of walls.

Abstract: There is provided an ultrasound endoscope of which a distal-end-part body of an insertion unit can be reduced in size. In an ultrasound endoscope according to an embodiment of the invention, a straight pipe portion of a first three-way pipe and a straight pipe portion of a second three-way pipe are arranged adjacent to each other in a direction orthogonal to the direction of a longitudinal axis of an insertion unit, and a branch pipe portion and the straight pipe portion are arranged at positions overlapping with each other in a case where the first three-way pipe and the second three-way pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.

Abstract: There is provided is an endoscope that can improve the cleanliness of a peripheral portion of an elevator. An endoscope (1) includes an insertion part (12) that is provided with a treatment tool insertion channel (82), a distal end portion main body (36), an elevator housing portion (62) that is provided in the distal end portion main body (36) and is open in a first direction, a treatment tool outlet (80) that is open to an inside of the elevator housing portion (62) and communicates with the treatment tool insertion channel (82), and an elevator (60). The elevator (60) has a first surface (64) and a second surface (66) inside a facing region facing the treatment tool outlet (80) in a state where the elevator is positioned at an elevated position.

Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.

Abstract: There is provided an ultrasound endoscope of which a distal-end-part body of an insertion unit can be reduced in size. In an ultrasound endoscope according to an embodiment of the invention, a straight pipe portion of a first three-way pipe and a straight pipe portion of a second three-way pipe are arranged adjacent to each other in a direction orthogonal to the direction of a longitudinal axis of an insertion unit, and a branch pipe portion and the straight pipe portion are arranged at positions overlapping with each other in a case where the first three-way pipe and the second three-way pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.

Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.

Abstract: Provided are a treatment tool elevating mechanism and an ultrasonic endoscope capable of restraining an increase in diameter of an endoscope and bearing a load.

Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.

Abstract: Provided is an endoscope that can fix a guidewire and stably hold a treatment tool. The endoscope includes a distal end body (36) having an elevator housing (62) that opens toward a first direction, a treatment tool lead-out port (80) that opens inside of the elevator housing (62), and an elevator (60) that is provided inside of the elevator housing (62) so as to be rotatable between an elevated position and a lowered position, the elevator (60) having a treatment tool guiding surface (60a). A facing wall portion (66), which is on a proximal end side and an opening part of the elevator housing (62), has a concave surface (96) that is formed on an inner side of the elevator housing (62) and a convex surface (94) that is formed at a position closer than the concave surface (96) to an opening.

Abstract: Provided is an endoscope that can suppress increase in the temperature of a distal end portion of an insertion section while preventing increase in the number of components and increase in the diameter of the distal end portion.

Abstract: Provided is an endoscope that can appropriately illuminate an insertion direction side of an insertion part, a treatment tool and a treatment target region thereof and can reduce the diameter of a distal end part of the insertion part.

Abstract: Provided is an endoscope capable of reliably illuminating a treatment tool delivered from a treatment tool delivery port and a treatment target region thereof. An endoscope includes a distal end part body that is provided on a distal end side of an insertion part and has a distal end, a proximal end, and a longitudinal axis; the treatment tool delivery port that is formed in the distal end part body and delivers the treatment tool inserted into the insertion part; an elevator that is rotatably supported in the treatment tool delivery port of the distal end part body and controls a delivery direction of the treatment tool delivered from the treatment tool delivery port; and a first illumination window that is provided on the distal end part body. The first illumination window is provided in a proximal end side region at a position shifted from the treatment tool delivery port to a proximal end side of the distal end part body in the distal end part body.

Abstract: There is provided an ultrasound endoscope of which a distal-end-part body of an insertion unit can be reduced in size. In an ultrasound endoscope according to an embodiment of the invention, a straight pipe portion of a first three-way pipe and a straight pipe portion of a second three-way pipe are arranged adjacent to each other in a direction orthogonal to the direction of a longitudinal axis of an insertion unit, and a branch pipe portion and the straight pipe portion are arranged at positions overlapping with each other in a case where the first three-way pipe and the second three-way pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.

Abstract: There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof.

Abstract: There is provided is an endoscope that can improve the cleanliness of a peripheral portion of an elevator. An endoscope (1) includes an insertion part (12) that is provided with a treatment tool insertion channel (82), a distal end portion main body (36), an elevator housing portion (62) that is provided in the distal end portion main body (36) and is open in a first direction, a treatment tool outlet (80) that is open to an inside of the elevator housing portion (62) and communicates with the treatment tool insertion channel (82), and an elevator (60). The elevator (60) has a first surface (64) and a second surface (66) inside a facing region facing the treatment tool outlet (80) in a state where the elevator is positioned at an elevated position.

Abstract: There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space.