RU97108684A - PLASTIC SYRINGE WITH LID - Google Patents

Claims (19)

1. A pre-filled plastic syringe containing a cylindrical body open at one end, sealed on one side with a movable piston, and on the other hand with a plug installed to remove it, and a cover having a shape for seating on at least the end of the plug, the cover has means for holding the plug, capable of gripping and holding at least the end of the plug in such a way that when the cap is separated from the syringe, the plug is also separated from the syringe, allowing the use of the contents of the injection syringe.  2. A plastic syringe according to claim 1, characterized in that the cap is located above the end of the syringe, but so that the cap is not fixed by means for holding it, and that the cap is mounted to move in such a position that the cap is fixed by means for her retention.  3. A plastic syringe according to claim 1 or 2, characterized in that the plug is made in the form of a rod that protrudes from the syringe at the end opposite the piston.  4. A plastic syringe according to claim 3, characterized in that the means for holding the plug is made in the lid in the form of a hollow channel for introducing a rod into it.  5. A plastic syringe according to claim 4, characterized in that the hollow channel has a section that is made tapering inward so that it gradually decreases in diameter.  6. A plastic syringe according to claim 5, characterized in that the rod in the maximum cross section has a size of 1.5-2.3 mm, and the channel in the lid has a fixing portion that is at least 0.1 mm smaller than the size of the rod in maximum cross section.  7. The plastic syringe according to claim 6, characterized in that the size of the rod in the maximum cross section is 1.8-2, 1 mm.  8. A plastic syringe according to any one of the preceding paragraphs, characterized in that the plug contains many longitudinal grooves separated from each other by compressible ribs.  9. A plastic syringe according to any one of the preceding paragraphs, characterized in that the plugged end of the syringe contains an end for installing a hypodermic needle.  10. A plastic syringe according to claim 9, characterized in that the end for installing the needle is made in the form of a Luer tip.  11. A plastic syringe according to any one of the preceding paragraphs, characterized in that the plug is connected to the end of the syringe with a collapsible bridge of plastic material that connects the inner wall of the outlet at the end of the syringe to the outer wall of the plug.  12. A plastic syringe according to claim 11, characterized in that the jumper contains one section with a minimum cross section, and another section, the thickness of which increases from the section with a minimum cross section.  13. A plastic syringe according to any one of the preceding paragraphs, characterized in that the cap is precisely fixed above the plug.  14. A plastic syringe according to claim 10, characterized in that the cap has an end outer skirt of such diameter and thickness that allows a fit between the hollow conical part and the peripheral outer wall of the end for installing the needle.  15. A plastic syringe according to claim 10, characterized in that the cap has an end outer skirt of such a diameter that allows landing on the peripheral outer wall of the end for installing the needle.  16. A plastic syringe according to any one of the preceding paragraphs, characterized in that the syringe is made only of polypropylene, polyethylene or polyethylene terephthalate.  17. A method of manufacturing a pre-filled plastic syringe, which includes the following operations: 1) injection molding in an aseptic medium of a cylindrical body open at one end, closed on one side with a plug made in one piece, removably connected to the body, 2) aseptic filling of the cylindrical body with injection means in an aseptic medium; 3) introduction of a pre-sterilized piston into the aseptic medium; 4) pre-sterilization of the piston into the open end of the cylinder in an aseptic environment, and separately from the molding of the cylindrical body, molding by injection molding of the cap before, during or after filling the cylindrical body, which has means for holding the cap, fitting the cap over the cap and attaching the cap to the plugged end of the cylindrical body .  18. The method according to p. 17, characterized in that the lid is molded in the same aseptic medium as the cylindrical body, and attached to the end of the body in the specified aseptic medium.  19. A plastic syringe, as it is essentially described with specific reference to figures 1-7.