Abstract: A vacuum packaging system for transporting a plurality of medical containers including a tray that supports the medical containers and an air impervious flexible film defining an internal cavity. The air impervious flexible film completely surrounds the tray and the medical containers. The internal cavity is evacuated to a predetermined vacuum level below atmospheric pressure. A method for packaging the plurality of medical containers for transportation in the tray includes inserting the medical containers into the tray, inserting the tray filled with medical containers into the internal cavity, evacuating the internal cavity to a predetermined vacuum pressure and sealing the flexible film such that the predetermined vacuum pressure is generally maintained in the internal cavity.

Abstract: A molding die assembly includes an upper die and a lower die, wherein at least one of the upper and lower dies is provided with a cavity corresponding to the shape of a rubber member to be molded, wherein at least one of the upper and lower dies is provided with an annular projection around a cavity. The distance between the upper and lower dies at the annular projection is made smaller than the distance between the opposed surface portions, other than the cavity, of the upper and lower dies. A rubber member produced by the above mentioned molding die assembly is also provided.

Abstract: A syringe barrel is provided with a hollow barrel body, a needle fitting arranged extending in an axial direction from a front end of the barrel body, and a finger flange arranged extending in an outward direction from a rear end of the barrel body. The syringe barrel features that a contour of the barrel body is a polygon in a cross-section taken at right angles to a central axis of the barrel body or that the barrel body is provided with at least one planar surface section formed on an outer peripheral wall of the barrel body. A syringe includes the above-described syringe barrel, a plunger slidably inserted in the syringe barrel, and a piston secured on the plunger.

Abstract: A medical container is excellent in solvent resistance, low gas permeability and heat resistance. A treating method for producing such medical containers is also disclosed. The medical container includes a polyethylene naphthalate resin and includes a liquid-contact part which is on an inner surface of the container, the liquid-contact part being resistant to leaching of a component of the container as a result of being irradiated with light and/or plasma. The light for irradiation may have a wavelength in the range of 350 to 450 nm. The medical container may be a vial or a syringe. The treating method for producing a medical container includes irradiating a liquid-contact part of a polyethylene naphthalate medical container with light and/or plasma.

Abstract: A gasket 7 used for a prefilled syringe 1 in which liquid 3 is filled, having a constriction 8 on its circumferential side face in contact with an inner surface of a syringe barrel 2 and having a bottom face 7c which is not in contact with the liquid 3 whose circumference is formed in a tapered shape.

Abstract: A molding die assembly includes an upper die and a lower die, wherein at least one of the upper and lower dies is provided with a cavity corresponding to the shape of a rubber member to be molded, wherein at least one of the upper and lower dies is provided with an annular projection around a cavity. The distance between the upper and lower dies at the annular projection is made smaller than the distance between the opposed surface portions, other than the cavity, of the upper and lower dies. A rubber member produced by the above mentioned molding die assembly is also provided.

Abstract: A sealing rubber closure is provided for use with a syringe/container specified by ISO (the International Organization of Standardization) and having a Luer nozzle to be inserted into a Luer-nozzle-receiving part of the sealing rubber closure. The Luer-nozzle-receiving part is configured, on a side of an inner end portion thereof, in an untapered cylindrical form to assure tight-fitted insertion of a free end portion of the Luer nozzle and, on a side of a Luer-nozzle-receiving opening thereof, in a tapered, substantially cylindrical form to assure tight-fitted insertion of a basal end portion of the Luer nozzle. A plastic film is laminated on the sealing rubber closure at least in an area of the Luer-nozzle-receiving part, where a free end of the Luer nozzle is to be maintained in contact with the sealing rubber closure.

Abstract: A mold for producing a rubber product comprises a precipitation hardening stainless steel without any surface treatment such as plating and/or fluorine resin coating applied to a finished surface of the mold. The rubber product can be produced using the mold upon producing it by compression molding, transfer molding or injection molding.

Abstract: A rubber-made syringe piston with a film laminated on it includes a plurality of annular ridges of different outer diameters formed continuously and integrally on a sliding surface of a liquid-contacting, leading end portion of the piston. The annular ridges may preferably be different by from 0.01 to 0.2 mm from one to another in outer diameter.