A switch unit includes: a tactile switch; a cable which transmits an operation signal generated when the tactile switch is operated; a formed part where a fitting engagement portion which is disposed on an operation section exterior member at a predetermined position, a recessed surface which is formed on a side of a first end portion with respect to the fitting engagement portion and where the tactile switch is mounted, a cable fixing portion which is disposed on a side of a second end portion which is a side opposite to the first end portion with the fitting engagement portion positioned between the first end portion and the second end portion and to which the cable is connected, and a circuit which electrically connects the recessed surface and the cable fixing portion to each other and transmits an operation signal generated by the tactile switch to the cable are formed.

Systems, apparatuses, and methods are discussed herein for an endoscope. The endoscope has a distal tip with an oblique portion and a flat portion, the oblique portion defines a plane that forms an angle between and including 20 and 40 degrees to a central axis of the endoscope. A related sheath may have similar features at the distal tip.

A device for controlling an endoscope to rotate, relating to the technical field of non-destructive inspection, comprises a display device, a control assembly, a coiler and a lens, and further comprises a drive assembly disposed at a joint of the coiler and the lens, and electrically connected to the control assembly to allow users to adjust the angle of the lens by controlling the drive assembly. The drive assembly comprises: a low-speed drive element disposed at an end, away from the display device, of the coiler, and a rotating lever connected to an output shaft of the low-speed drive element. The lens is disposed on a side, away from the low-speed drive element, of the rotating lever. The low-speed drive element is a low-speed motor. The lens comprises a lateral lens and a front lens. The device for controlling an endoscope to rotate has the following advantages: the lens can be rotated to a suitable inspection position without manual operation or other auxiliary location devices, the display angle can be adjusted, using is convenient, and operation is easy.

In a multistage pushbutton switch device, n pushbutton switches and at least one load absorption spring are movably arranged in between a pushbutton member and a reaction force wall in the same axial line, each of the n pushbutton switches is composed of an electrical switch member and a pressing member that operates the electrical switch member, and (n−1) that is one less than n, or more pushbutton switches is arranged with an intermediate spring member, when the pushbutton member is pressed and displaced, the n electrical switch members are sequentially turned on, the load absorption spring is arranged in at least one of between the pushbutton member and the pushbutton switch that is the nearest to the pushbutton member, between pushbutton switches that are adjacent, and between the reaction force wall and the pushbutton switch that is the nearest to the reaction force wall.

In a multistage pushbutton switch device, n pushbutton switches and at least one load absorption spring are movably arranged in between a pushbutton member and a reaction force wall in the same axial line, each of the n pushbutton switches is composed of an electrical switch member and a pressing member that operates the electrical switch member, and (n−1) that is one less than n, or more pushbutton switches is arranged with an intermediate spring member, when the pushbutton member is pressed and displaced, the n electrical switch members are sequentially turned on, the load absorption spring is arranged in at least one of between the pushbutton member and the pushbutton switch that is the nearest to the pushbutton member, between pushbutton switches that are adjacent, and between the reaction force wall and the pushbutton switch that is the nearest to the reaction force wall.

A flexible endoscope of the present invention includes a catheter portion and a connection plug. The catheter portion includes an image guide, a light guide, and a catheter tube that surrounds the image guide and the light guide in a longitudinal direction, and the connection plug includes a hollow cover that accommodates the proximal end of the catheter tube, a flexible tube that protrudes from the hollow cover and through which the catheter tube is passed, a first connection terminal that is connected to the light guide extending from the proximal end of the catheter tube, and a second connection terminal that is connected to the image guide extending from the proximal end of the catheter tube. The image guide and the light guide are slidable inside the catheter tube, and at least one of the image guide and the light guide is arranged curved inside the hollow cover of the connection plug.

A flexible endoscope of the present invention includes a catheter portion and a connection plug. The catheter portion includes an image guide, a light guide, and a catheter tube that surrounds the image guide and the light guide in a longitudinal direction, and the connection plug includes a hollow cover that accommodates the proximal end of the catheter tube, a flexible tube that protrudes from the hollow cover and through which the catheter tube is passed, a first connection terminal that is connected to the light guide extending from the proximal end of the catheter tube, and a second connection terminal that is connected to the image guide extending from the proximal end of the catheter tube. The image guide and the light guide are slidable inside the catheter tube, and at least one of the image guide and the light guide is arranged curved inside the hollow cover of the connection plug.

An imaging system includes a first optical system configured to receive an imaging beam from a surgical region. The imaging beam including a first wavelength band and a second wavelength band. The imaging beam is directed along a first optical axis. The first optical system includes a dichroic beam splitter, and the first optical system is configured to direct a first optical beam associated with the first wavelength band along a first direction and direct a second optical beam associated with the second wavelength band along a second direction. The imaging system also includes a first sensor located along the first direction and configured to capture a first image associated with the first optical beam. The image system further includes a first relay lens system located along the second direction downstream from the first optical system and configured to receive the second optical beam.

A delivery fiber assembly suitable for delivering broad band light and including a delivery fiber and a connector member. The delivery fiber has a length, an input end for launching light, and a delivery end. The delivery fiber includes along its length a core region and a cladding region surrounding the core region, the cladding region includes a cladding background material having a refractive index N.sub.bg and a plurality of microstructures in the form of inclusions of solid material having refractive index up to N.sub.inc and extending in the length of the longitudinal axis of the delivery fiber, wherein N.sub.inc<N.sub.bg. The plurality of inclusions in the cladding region is arranged in a cross-sectional pattern including at least two rings of inclusions surrounding the core region. The connector member is mounted to the delivery fiber at a delivery end section of the delivery fiber including the delivery end.

There is provided a new and improved optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method capable of suppressing quality degradation of a captured image while also protecting the endoscope camera from airborne droplets, the optical film provided on the endoscope camera drape including: a drape section that covers a circumferential face of an endoscope camera, and a connecting member which is provided on a front end of the drape section and connects an endoscope and the endoscope camera, the optical film being provided on the connecting member, and including: a reflection suppression section configured to suppress a reflection of incident light incident on the endoscope camera from the endoscope.