Patent ID: 9717851
Date: 2017-08-01
CPC Classifications: A61M

Claim:
1. An autoinjector comprising a lower body receiving a tank, said tank containing fluid product and comprising a piston and a needle, said autoinjector comprising a central body fastened to said lower body and an actuating sleeve provided with a contact end designed to make contact with the body of the user, said actuating sleeve being moveable between a projected position and an actuation position, said actuating sleeve being in a projected position prior to and after actuation of the autoinjector, injection means being provided to inject said fluid product through said needle when said needle is in an injection position in which said needle is inserted in the body of the user, the autoinjector comprising a tank movement device to move the needle towards said injection position, wherein said tank movement device comprises a control ring rotatably mounted in said central body, said control ring comprising a first internal profile having a length defining a longitudinal direction of the first internal profile that is inclined relative to an axial direction of the autoinjector, the first internal profile adapted to cooperate with an internal projection of a control sleeve secured to the tank, said control sleeve being moveable axially in said central body, such that rotation of the control ring causes said control sleeve to move axially, said first internal inclined profile being terminated by a non-inclined plane portion on which rotation of the control ring does not cause the control sleeve to move axially, such that said needle reaches the injection position when the projection reaches the end of the inclined profile, and said tank movement device triggers said injection means only after the needle has reached the injection position; and wherein the control ring comprises at least one second internal inclined profile that cooperates with at least one projection of a blocking ring to trigger the injection means only after movement of said internal projection on said non-inclined plane portion.