Injection device for administering fluid product with metering- and administering mechanism, particularly for drug delivery, particularly for subcutaneous or interdermal injection, has housing with two internal threads

摘要

The injection device has a housing (5) with two internal threads, which are arranged on a threaded sleeve (11) firmly connected with the housing. A metering sleeve (9) is provided with an external thread, which is engaged with the former internal thread of the housing such that the metering sleeve is unscrewed from the housing and is screwed into the housing. A coupling sleeve (12) is detachably coupled with the metering sleeve so that the rotational movements of the metering sleeve are transferred to the coupling sleeve.