Patent ID: 8262629

Claim:
A catheter port comprising a housing which comprises a recess, an insertion part which is disposed in the housing recess and in which a chamber for accommodating an active substance is formed, a membrane disposed above the chamber in the housing recess, and a connection piece for a catheter, said connection piece being in a fluid connection with the chamber, wherein the housing is constituted in two parts comprising an upper housing part and a lower housing part, the insertion part comprises an outwardly projecting shoulder which, when the insertion part is inserted into the housing recess, engages the lower housing part in a torsion-resistant manner, the insertion part is held by the upper housing part with the interposition of the membrane in a clamped manner in a housing recess of the lower housing part, the housing further comprises a housing sidewall including an opening configured to receive the connection piece, and a housing base that closes an end of the housing sidewall, the housing base and housing sidewall defining the housing recess, and the outwardly projecting shoulder of the insertion part engages a corresponding recess formed in an inward-facing surface of the housing recess to provide the torsion-resistant engagement between the insertion art and the lower housing part.