CA2552177C — Injection device

USPTO Abstract

An injection device comprising a housing (50, 60) with a spring (94) arranged therein in order to accumulate energy for an injection process. The spring (94) impinges upon a squeezing member (92) in a proximal direction to enable injection fluid (16) to be squeezed out of a container which is displaceably mounted in the housing and which has an injection needle (18) secured to the end thereof. A displacement member (36) is arranged in the housing. Said member can move in a longitudinal direction and push the container in a proximal direction, thereby causing the needle to be inserted. A detent lug (100) is provided on the squeezing member (92). A corresponding detent opening (102) in the displacement member (36) is associated therewith. A control member (70) operating according to the travel path is used to disengage the detent lug (100) from the detent opening (102) when the displacement member (36) has completed a specific travel path in a proximal direction.