Abstract: To provide a method of producing an endoscope flexible tube and the like which can realize an endoscope with high insertability. A method of producing the endoscope flexible tube including: continuously discharging a liquid resin into a film shape from an annular discharge port surrounding an axis and a side surface of a cylindrical substrate; bringing the discharged film-shape resin into contact with the entire periphery of the substrate on the downstream side of the discharge port; covering a side surface of the substrate with the resin while moving the substrate in an axial direction to separate a portion where the resin and the substrate are in contact from the discharge port; and curing the resin covering the side surface of the substrate.

Abstract: To provide a method of producing an endoscope flexible tube and the like which can realize an endoscope with high insertability. A method of producing the endoscope flexible tube including: continuously discharging a liquid resin into a film shape from an annular discharge port surrounding an axis and a side surface of a cylindrical substrate; bringing the discharged film-shape resin into contact with the entire periphery of the substrate on the downstream side of the discharge port; covering a side surface of the substrate with the resin while moving the substrate in an axial direction to separate a portion where the resin and the substrate are in contact from the discharge port; and curing the resin covering the side surface of the substrate.

Abstract: A flexible tube for an endoscope includes a tubular core member, and an outer cover provided around the core member, the outer cover being formed of a material containing as a major component thereof polyolefin-based thermoplastic elastomer and polyolefin, wherein the amount of the polyolefin contained in the material is 5 parts by weight with respect to 100 parts by weight of the polyolefin-based thermoplastic elastomer. The polyolefin is mainly constituted from polypropylene, and the average thickness of the outer cover is 0.08 to 0.9 mm.

Abstract: A flexible tube for an endoscope includes a tubular core member, and an outer cover provided around the core member, the outer cover having a laminated structure comprised of a first layer and a second layer which forms an outermost layer of the laminated structure. The first layer is formed of a material containing as a major component thereof polyolefin-based thermoplastic elastomer or styrene-ethylene.butylene-styrene block copolymer, and the second layer is formed of a material containing as a major component thereof polyolefin. The first and second layers are arranged adjacent to each other. The constituent material of the second layer may further contain thermoplastic elastomer.

Abstract: A flexible tube for an endoscope includes a tubular core member, and an outer cover provided around the core member, the outer cover being formed of a material containing as a major component thereof styrene-ethylene.butylene-styrene block copolymer. The material constituting the outer cover further contains polyolefin. The amount of the polyolefin contained in the material is 5 to 70 parts by weight with respect of 100 parts by weight of the styrene-ethylene.butylene-styrene block copolymer. The polyolefin is mainly constituted from polypropylene. The average thickness of the outer cover is in the range of 0.08 to 0.9 mm.

Abstract: A flexible tube for an endoscope includes a tubular core member, and an outer cover provided around the core member, the outer cover being formed of a material containing as a major component thereof polyolefin-based thermoplastic elastomer and polyolefin, wherein the amount of the polyolefin contained in the material is 5 parts by weight with respect to 100 parts by weight of the polyolefin-based thermoplastic elastomer. The polyolefin is mainly constituted from polypropylene, and the average thickness of the outer cover is 0.08 to 0.9 mm.

Abstract: The closed container for an clinometric sensor is assembled of a tube-like member with a circular cross section, and a pair of side boards shaped like a disc and closing both opening ends of the tube-like member. On the inside flat plane of one side board, a pair of first electrodes are formed with a gap passing the central axis of the tube-like member and trending in the radial direction of the tube-like member. On the other hand, on the inside flat plane of the other side board, a second electrode is formed through the approximately whole area thereof. In the closed container, an electrolytic solution of approximately a half of the volume thereof is injected.

Abstract: A pair of upper electrodes are formed on an upper inner surface of a closed container constituting a clinometric sensor and a lower electrode is formed on the bottom of the closed container. An electrolytic solution comprising potassium iodide and a solvent containing a mixture of N,N-dimethylformamide and acetonitrile in which a bubble remains is sealed into the closed container.

Abstract: An inclination sensor includes a container in which an electrolyte liquid and a gas bubble are sealed. The container has a top member with a concave surface having a radius of curvature in a first direction larger than a radius of curvature in a second direction, perpendicular to the first direction. The concave surface is provided with two electrodes that are aligned in the first direction. An inclination of an object is measured by mounting the inclination sensor to the object and electrically detecting the position of the bubble as it contacts the concave surface, by passing a current through the liquid.

Abstract: In a tilt sensor including a sealed container which is comprised of a container body and a top cover plate which is adapted to close the container body and is provided on the inner surface thereof with a recess whose depth gradually increases from the peripheral edge toward the center thereof, and a holder which holds the sealed container, the top cover plate and the holder are provided with a positioning device which determines a relative angular position between the sealed container and the holder. A mask and a coat holder, which are used to form electrodes on the top cover plate are also disclosed.

Abstract: A tilt sensor includes a sealed container formed of a container body, a top cover plate adapted to close the container body and provided on one end surface thereof with a recess having a concave surface whose depth gradually increases from a peripheral edge toward a center thereof. The tilt sensor further includes a liquid enclosure containing an air bubble, that is enclosed in the container body. To coincide the center of the configuration of the top cover plate with a line normal at a deepest portion of the concave surface at a grinding operation after molding the top cover plate, an indicia is provided on the line normal to the concave surface at the deepest point of the concave surface.