Patent ID: 8616401

Claim:
A closure for a sterile pharmaceutical container, the closure ( 1 ) being thermally deformable by heating for connecting to the pharmaceutical container, the closure ( 1 ) comprising a prefabricated closure body ( 2 ) having a cup-shaped construction with a base ( 3 ) having an exterior surface and an opposing interior surface, a wall ( 5 ) depending downwardly from the interior surface of the base ( 3 ), a shoulder ( 13 ) extending from the wall ( 5 ) and another wall ( 4 ) depending downwardly from the shoulder ( 13 ), the closure body ( 2 ) having at least one pierceable opening ( 8 ) in the base ( 3 ), an elastically pliant sealing element ( 7 ) being arranged on the closure body ( 2 ) in the region of the base ( 3 ) such that the at least one pierceable opening ( 8 ) is sealed by the sealing element ( 7 ) and a part of the sealing element ( 7 ) is accessible from outside in a use position of the closure ( 1 ), the closure body ( 2 ) having a retaining element ( 11 ) independent of the wall ( 5 ) and projecting inwardly from the interior surface of the base ( 3 ) of the closure body ( 2 ) in the use position of the closure ( 1 ), an entire outer periphery of the retaining element ( 11 ) being radially spaced-apart from the wall ( 5 ), wherein the entire interior surface of the base ( 3 ) positioned radially outwardly of the retaining element ( 11 ) extends generally in a single common plane with the entire interior surface of the base ( 3 ) positioned radially inwardly of the retaining element ( 11 ), wherein a receptacle ( 12 ) is formed by the retaining element ( 11 ) for the sealing element ( 7 ) and the sealing element ( 7 ) is arranged in the receptacle ( 12 ).