Cap assembly and production method

摘要

The invention relates to a tip cap assembly for closing a distal opening of a receptacle like a syringe body or a tube in a sealed manner, and to a method for producing the tip cap. A cap assembly according to the invention comprises a frangible tip of a receptacle, preferably a pre-filled receptacle. An upper portion of the tip closes the receptacle respectively a lower tip portion comprising a passage as known from the state of the art. Hence, the receptacle is reliably sealed to prevent contamination or loss of the medication. Compared with the state of the art, a receptacle has a more effectively sealed tip. It is necessary to break the upper tip portion away in order to open the receptacle. A cap element protects the tip on one side. On the other side, unscrewing the cap breaks the upper portion away without hurting a person.

主权项

1. A cap assembly comprising a frangible tip of a receptacle, a fastening ring and a cap element attached to the fastening ring by an internal and one of an external thread and a bayonet joint, wherein, the fastening ring is attached at the receptacle or a lower tip portion of the tip by an annular protrusion and wherein, the cap element comprises a plurality of locking tabs, wherein in a closed position of the cap assembly the locking tabs are enclosed with a form fit by locking recesses provided by projecting locking elements wherein the frangible tip is an integral part of the receptacle and wherein the lower tip portion of the tip of the cap assembly comprises a plurality of projecting locking elements adjacent to a body of the receptacle for attaching the fastening ring either to the receptacle or to the lower tip portion.