Abstract: There is provided an injector having a gasket held in excellent intimate contact with an inner wall surface of a barrel and shortened in overall length. A gasket is joined to a mount base disposed on a tip end of a plunger and having a bendable portion which bends toward an axis of the plunger radially outwardly of the mount base. The gasket is joined to the mount base with a gap left for allowing the bendable portion to bend toward the tip end of the plunger when the gasket slides toward an injection needle. The gasket is made of a synthetic resin having an A-scale Shore hardness in the range from 20 to 70. The gasket has a groove define therein radially outwardly of the mount base, and the bendable portion comprises a portion of the gasket disposed radially outwardly of the groove.

Abstract: There is here provided an easily operable winged indwelling needle capable of surely preventing accidental sticking. A winged indwelling needle 1 comprises a hollow needle 2 having a knife point at its tip, a hub 3 provided at a rear end of the hollow needle 2, a tub-shaped member 6 for housing the hollow needle 2 and the hub 3, a pair of wing-shaped members 7 provided on an outer surface side of a side wall of the tub-shaped member 6, protrusion maintaining means for releasably maintaining a state in which the hollow needle 2 is protruded as much as a predetermined length from a tip of the tub-shaped member 6, and housing maintaining means for maintaining a state in which the hollow needle 2 is housed in the tub-shaped member 6. The above winged indwelling needle further comprises a rack 4 provided in junction with the rear end of the hub 3, and a gear 8 engaged with the rack and supported on an inner surface side of the side wall of the tub-shaped member 6.

Abstract: There is here provided a wing-like needle protector which can surely prevent mistaken sticking, and can safely cap a hollow needle. The wing-like needle protector for housing a wing-like needle 1 which comprises a hollow needle 2, a holding cylinder 3 for holding a rear end of the hollow needle 2, and a pair of wing pieces 4, 4 formed integrally with the holding cylinder 3 so as to freely coalesce with each other. The protector comprises a gutter-shaped member 7 for housing the hollow needle 2, the holding cylinder 3 and the coalesced wing pieces 4, 4, and a gripper 8 protruded outward from a bottom surface of the gutter-shaped member 7. The gutter-shaped member 7 has a closed tip 9a of a portion 9 for housing the hollow needle 2, an opened rear end 10a of a portion 10 for housing the holding cylinder 3, and a narrowed area 7a where the holding cylinder 3 is fitted in a bottom portion, and the holding cylinder 3 is engaged with the narrowed area 7a.

Abstract: When an ultraviolet pasteurizer is used in a room free of a person, left and right light shield doors are opened to expose ultraviolet lamps outwardly. When an operation switch on a control panel is then turned on, an operation start timer is actuated, and the ultraviolet lamps are then energized to sterilize surrounding surfaces after elapse of 5 minutes. When the ultraviolet pasteurizer is used in a room occupied by a person, the left and right light shield doors are closed to direct the ultraviolet lamps inwardly until all light shield doors are brought into a substantially triangular prism. When the operation switch on the control panel is then turned on, the ultraviolet lamps and a fan are energized to draw external air from an air inlet. The drawn air passes through an inner radiation chamber defined inwardly of the light shield doors that have been combined into the substantially triangular prism.

Abstract: A discharge container capable of discharging a liquid in a stable state. In a pump portion of the discharge container, when pressing down a first piston, a second piston is pressed down by a drug solution charged within a cylinder and a second spring is compressed. When a front end portion of the first piston passes through a step portion of the cylinder, an outflow port and an inner portion of the cylinder communicate with each other. The drug solution charged within the cylinder is pressed out by the second piston by an urging force of the second spring and flows out from the outflow port. Since the drug solution is discharged by a uniform force due to the force of the second spring, when the drug solution is discharged in a vapor form, a fixed spraying state is always obtained.

Abstract: A delivery container has a casing filled with a chemical liquid and a cap mounted on an upper end of the casing. A hollow cylinder having slots is disposed in and integrally formed with a lower portion of the casing. A tubular piston with a check valve is slidably disposed in the cylinder. The piston is connected to the cap, which has a discharge port, by a hollow shaft which extends vertically through an upper portion of the casing, so that vertical movement of the cap can be transmitted via the shaft to the piston. Inasmuch as the cylinder is disposed in the bottom of the casing, the cylinder is filled at all times with the chemical liquid which is supplied via the slots by gravity. The chemical liquid does not need to be drawn upwardly, and can be discharged in a constant quantity from the discharge port in one cycle of operation of the delivery container.

Abstract: An endoscopic ligating instrument has an outer tube having a rear end in which the tip end of an endoscope is mounted. An inner tube with a trip wire connected thereto is axially movably inserted in the outer tube. When the inner tube is moved rearwardly, the inner tube is urged to move forwardly by a spring. Three ligating O-rings are mounted respectively at axially equally spaced positions on the outer circumferential surface of a portion of the inner tube which projects from the outer tube. Four arms extending forwardly from the outer tube are disposed respectively at circumferentially equally spaced positions over the outer circumferential surface of the inner tube. Each of the arms has teeth disposed behind the ligating O-rings, respectively, and having front pushing surfaces for pushing the ligating O-rings forwardly when the inner tube is moved rearwardly and rear slant surfaces for riding over the ligating O-rings and spreading the arms radially outwardly when the inner tube is moved forwardly.

Abstract: A pump is mounted in one end of a cylindrical container for storing a liquid, for drawing the liquid stored in the cylindrical container and discharging the drawn liquid out of the cylindrical container. A piston is slidably disposed in the opposite end of the container in keeping the liquid sealed in the cylindrical container. The piston is movable toward the pump as the amount of the liquid stored in the cylindrical container is reduced when the liquid is discharged from the cylindrical container by the pump. The piston has a slanted surface facing the pump for contact with the liquid stored in the cylindrical container, the slanted surface being inclined progressively toward the second axial end. The piston also has a cylindrical surface defining a communication hole defined axially therethrough and having an inner end opening at the slanted surface. The communication hole provides communication between the interior and the exterior of the cylindrical container.

Abstract: A pump assembly for storing and discharging a liquid such as a chemical solution includes a substantially cylindrical container for storing the liquid therein. A pump is mounted on one end of the container. The pump has a suction port for drawing the liquid from the container and an outlet port for discharging the liquid. A gasket is slidably inserted in the opposite end of the container in contact with the liquid stored in the container, for sealing the liquid in the container. The gasket is slidable toward the pump when the liquid stored in the container is reduced by the pump. A slanted portion is disposed in one end of the container and has a slanted surface extending continuously from an inner peripheral surface of the container and converging away from the gasket. The suction port of the pump communicates with the interior space of the container substantially at a converging end of the slanted surface.

Abstract: An electrode apparatus for cardiac pacing suitable for use in an emergency in which there is provided a needle, a sheath and an electrode needle wire. First, the chest wall is pierced through with the needle covered with the sheath. Thereafter, the needle is pulled out from the sheath and, in place thereof, the electrode needle wire is inserted and subsequently the heart is pierced with the electrode needle wire in preparation for the pacing operation.