A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
26/111
A61M 5/00 (2006.01) A61M 5/28 (2006.01) A61M 5/32 (2006.01) A61M 5/34 (2006.01) B29C 49/00 (2006.01) B29C 67/00 (2006.01) A61M 5/31 (2006.01) B29C 65/08 (2006.01)
Patent
CA 1214925
ABSTRACT OF THE DISCLOSURE This invention provides a new method of manufacturing pre-fillable hypodermic syringes. An ampul is formed, filled with medicaments and bonded to the hypodermic needle or is ready for affixation of the hypodermic needle at a later time, all in a single continuous efficient process. All of the steps and procedures may be accomplished within a single tooling apparatus. Moreover, the sterility of the contents of the ampul and the sterility of the hypodermic syringe itself is maintained throughout the process. The method in one form comprises initially the injection-moulding of plastic to form a neck and a parison. The neck is in final form at the injection stage. A blow-fill pin is inserted into the parison, and the parison is then blow-moulded into the final, shape of the ampul. Medicaments are injected into the ampul through the blow-fill pin. The pin is then removed from the ampul. The opening left upon the removal of the pin, is closed by means such as sonic welding. The temperatures of the injection-moulding and the blow-moulding, as well as other procedures, help to insure the sterility of the medicaments. Alternate embodiments of the manufacturing process involve the sealing of a cap over the opening in the neck area of the ampul. Further embodiments of the process involve the affixing of a hypodermic needle to the ampul.
408141
Van Eck Maurits J.h.
Van Eck William F.
Frayne & Company Robert
Van Eck Maurits J.h.
Van Eck William F.
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