Olympus Corporation

Keisuke Hatano

Kiwamu Fujitani

Takayasu Ito

Takuya Ariyoshi

Yutaro Watanabe

Tatsuhiko Suzuki

Hiroyuki Nagamizu

Shigeyasu Kishioka

Yudai Harada

Shun Nagasawa

A bending operation mechanism includes an operation lever, a wire pulling member, a pulling wire, a cylinder, and a pulley, and the pulley is disposed with a predetermined rotation shaft tilted so that an extended line of the predetermined rotation shaft intersects with the cylinder.

Bending operation mechanism for endoscope, and endoscope

An endoscope can include an internal member provided at a distal end of an insertion portion a conductive external member fitted over the internal member and electrically connected to a ground. The endoscope can also include an image pickup instrument fixed to the internal member, and the image pickup instrument can include a lens. The endoscope can include an electrical connection part having a first end portion connected to the conductive member and a second end portion connected to the external member, the electrical connection part being configured to electrically connect the conductive member and the external member, a conductor wire including a third end portion electrically connected to the first end portion, and a fourth end portion that passes through an opening formed in the external member.

Endoscope and method for confirming grounding of endoscope

An endoscope includes a frame component provided at a distal end portion of an insertion portion, an exterior member with conductivity in which the frame component fits, an imaging unit fixed to the frame component and configured to pick up an image, a conductive part provided in the imaging unit, an electrical connection part, a first end portion of which is connected to the conductive part, a neighboring part of a second end portion on an opposite side of the first end portion of which is sandwiched and fixed between an outer surface of the frame component and an inner surface of the exterior member and configured to electrically connect the conductive part and the exterior member, and an opening provided in the exterior member and configured to expose part of the frame component and cut an extra portion of the electrical connection part during assembly.

Endoscope, grounding method and method for grounding distal end portion of endoscope

An endoscope operation section of the present invention includes an operation section having a second longitudinal axis extending in a substantially same direction as a first longitudinal axis of an insertion section, the operation section being configured to be grasped by an operator, a bending operation member, including an axis crossing the second longitudinal axis at an acute angle during nonoperation, and configured to bend the insertion section, a first pedestal section to which a suction operation member is attached, a second pedestal section in which a surface projecting further in the forward direction by a predetermined height than the first pedestal section is formed, the predetermined height being set to a higher position in the forward direction than a position of a suction tube connecting member of the suction operation member, and a pressing operation member provided on the surface of the second pedestal section and pressed and operated.

Endoscope operation section and endoscope including endoscope operation section

A bending operation mechanism of an endoscope includes a bending operation lever, a seal unit having a tubular member and an elastic member. The elastic member has a fixed part attached to an outer circumference of the tubular member in a circumferential manner along a longitudinal axis direction N of the tubular member. An extending part that extends from an outer circumference of the fixed part to the outside of the fixed part in a radial direction K into a shape of a circle substantially concentric with the fixed part. A region extends from the outer circumference of the fixed part would extend with a predetermined angle.

Bending operation mechanism of endoscope

A bending operation device includes a bending operation lever, a wire pulling member, bending operation wires, and tubular members. The bending operation lever is tiltably supported to have an angle with respect to a longitudinal direction of an operation unit of an endoscope. The wire pulling member includes arm portions displaced in conjunction with tilt motion of the bending operation lever. The bending operation wires are connected to the arm portions. The bending operation wires cause bending motion of a bendable part disposed in an insertion section of the endoscope. A respective one of bending operation wires is inserted in each of the tubular members. The tubular members (i) change extension directions of the plurality of bending operation wires and (ii) guide the plurality of bending operation wires to the plurality of arm portions.

Bending operation device and endoscope

An endoscope includes a bending operation member provided at an operation portion and configured to bend a bending portion of an insertion portion, a plurality of bending operation wires configured to be pulled or relaxed by the bending operation member, a plurality of tubular members provided inside the operation portion, into which the plurality of bending operation wires are inserted respectively, and disposed in a deflected state so as to avoid an internal component provided inside the operation portion, and a tubular member fixing member provided inside the operation portion and enabled to optimally adjust end portions of the plurality of tubular members at different positions along a longitudinal axis of the operation portion in a direction orthogonal to the longitudinal axis.

Endoscope

A medical apparatus includes: an operation portion; an annular wall portion including a base portion connectedly provided to an exterior case and a protruding end portion; an operation lever configured to be tilted by an operator; a cover member including a first fitted portion fitted to the operation lever, a deforming portion configured to deform accompanying a tilt of the operation lever, and a second fitted portion with an inner circumferential surface fitted to an outer circumferential surface of the wall portion; and an elastic member including a contact portion in contact with an outer circumferential surface of the second fitted portion, the contact portion being fixed to the exterior case and being deformed to press the outer circumferential surface of the second fitted portion.

Medical apparatus

An endoscope operation portion includes: an operation portion body provided being connected to a grasping portion; a joystick-type bending operation lever provided on a back side of the operation portion body, including a lever shaft body, and configured to perform a bending operation of a bending portion; and a suction button provided on a front side of the operation portion body so that an angle formed by an operation axis in a pressing-down operation direction relative to a central axis of the lever shaft body is an obtuse angle, and an intersection point between the central axis and the operation axis is positioned inside the operation portion body.

Endoscope operation portion and endoscope

A bending operation device includes a bending operation member, a bendable part, an operation wire, a pulling wire, and a connection member. The bending operation member is disposed in an operation unit and is supported tiltably in a preset direction. The bendable part is disposed on a side of a distal end of the operation unit. The operation wire is connected at an end thereof to the bending operation member and is pulled or relaxed according to displacement of the bending operation member. The pulling wire is connected to the bendable part and bends the bendable part. The connection member is connected to the operation wire at a first position and is connected to the pulling wire at a second position. The second position is shifted from the first position by a preset angle in a turning direction about a longitudinal axis of the operation unit.

Bending operation device and endoscope with the same applied thereto

An endoscope includes a bending operation apparatus including: a rod-like shaft section that is standing perpendicularly from one surface of an operation section and capable of being tilted; and a cover member including a central section that is placed to externally cover the rod-like shaft section in a water tight manner, a peripheral section that closes in a water tight manner an opening portion in which the rod-like shaft section is disposed, and an intermediate section provided between the peripheral section and the central section, wherein the cover member of the bending operation apparatus includes a deformation restricting section that is a tubular section formed along a longitudinal axis of the rod-like shaft section and placed to externally cover an intermediate portion of the rod-like shaft section, and restricts outward expansion of the intermediate section.

An operation lever type (joystick type) endoscope including an operation lever capable of adjusting a bending angle of a bending portion in response to a tilting operation of an operation portion, and an exterior cover an outer periphery portion of which is watertightly fixed to an operation portion body (an operation portion), and an inner periphery portion of which watertightly covers an outer circumference of the operation lever, the exterior cover being capable of deforming by pressure fluctuation inside the operation portion (that is, pressure fluctuation of a sealed space formed inside the endoscope), is provided with a restricting memberconfigured to restrict expansion of the exterior cover by the fluctuation of the internal pressure.

A bending operation device includes a bending lever that is tiltably supported with an angle to a longitudinal direction of an operation section of an endoscope, a wire pulling member that includes a plurality of arm portions that are displaced according to tilting motion of the bending lever, a plurality of operation wires that are connected to the plurality of arm portions and that bend a bending portion provided in an insertion section of the endoscope according to displacement of the wire pulling member, and a plurality of pulleys that guide the plurality of operation wires to the plurality of arm portions, with the plurality of operation wires being substantially parallel to one another, when the bending lever is in a neutral position at which the bending portion is substantially straight.

An endoscope includes stays extending inside an operation section along a direction of a longitudinal axis, and a suction pipeline fixed to the operation section at a distal end side and a proximal end side so as to extend inside the operation section, along the stays and in the direction of the longitudinal axis, where an inside of the operation section is partitioned into a first space portion and a second space portion by the stays and the suction pipeline, each angle wire is disposed inside the first space portion, and long internal components, such as a signal cable and a light guide, are disposed inside the second space portion.

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Koganei, Japan

Keisuke Hatano