Automatic Injection Device

摘要

The present invention relates to an automatic injection device (1) comprising: a container (2) having a longitudinal axis A and movable between a first position and a second position, in which the needle is inserted, biasing means (8), for moving the container to its second position, retaining means (70, 74, 74b) for maintaining said biasing means in a first stressed state, triggering means (90, 91e) for releasing said retaining means, said retaining means comprising a lever member having a rotatable cylinder part and a radial projection extending therefrom, said radial projection being in a first angular position when said retaining means is in its passive condition, said radial projection being in a second angular position, different from said first angular position, when said retaining means is in its active condition, said rotatable cylinder part being included in a transversal plane of said longitudinal axis A.

主权项

1. A device for injection of a product into an injection site, said device comprising:
a housing having a longitudinal axis A, a container located within the housing, said container capable of holding the product to be injected, said container including a proximal end and a distal end, a stopper located at the proximal end of the container for substantially closing the proximal end of the container, said stopper capable of being moved in a distal direction within the container to expel the product to be injected, a needle located at the distal end of the container, said needle configured to allow the product to exit there through, said container being movable with respect to said housing between a first position, in which the needle does not extend beyond a distal end of the housing, and a second position, which is distally spaced with respect to said first position, in which the needle extends beyond the distal end of the housing, a biasing member, coupled to said container and to said housing during movement of the container at least from said first position to said second position, said biasing member designed for exerting a distal force to said container so as to move said container from the first position to the second position when the biasing member transitions from a first state to a second state, wherein said second state is less stressed than said first state, a retaining device coupled to said container and to said housing when the container is in the first position, for releasably maintaining said biasing member in the first state, said retaining device being capable of moving from a passive condition, in which the retaining device maintains said biasing member in the first state, to an active condition, in which said biasing member is free to expand to its second state, a trigger capable of moving said retaining device from its passive condition to its active condition, wherein said retaining device comprises a lever member having a rotatable cylinder part and at least a radial projection extending from said cylinder part, said radial projection being in a first angular position when said retaining device is in its passive condition, and said radial projection being in a second angular position, which is different from said first angular position, when said retaining device is in its active condition, and wherein said rotatable cylinder part is included in a transversal plane of said longitudinal axis A.