Patent ID: 7604138

Claim:
A closure device for a container, comprising: a filling device that can be attached to an opening of the container; a closure means that is attached to the filling device in such a way that the opening of the container is sealed if the filling device is attached to the opening and which closure means is at least partially coated with polytetrafluoroethylene on one side that is accessible from outside the container in the assembled state of the filling device on the container, the closure means comprising: a closure structure formed of soft material having good adhesive properties; and a needle guide that encloses the closure structure and a portion of a needle tip receiving side of the closure structure, the needle guide being formed of a hard material, the needle guide defining a funnel-shaped opening which directs the needle tip toward the closure structure; a collecting space below the closure structure for receiving a fluid that can be introduced into the collecting space through the closure means.