Patent ID: 8932266
Filing Date: 2015-01-13
Classification: A61M

Abstract:
1. An injection device comprising: a housing including a main body portion and a front body portion relatively moveable longitudinally; the housing being openable to provide access to allow a syringe to be loaded into the housing in use, the syringe having a body, a plunger and a needle at a forward end of the body; a drive member disposed within the housing and moveable against a drive spring bias to a primed position and operable in use when released from said primed position, said drive bias being sufficient to urge the syringe forwardly within the housing to an injection position in which the syringe needle projects from the front end of the housing and thereafter to expel a dose therefrom; a trigger for latching said drive member in said primed position; said front body portion further being moveable against a housing spring bias rearwardly from a closed position to a fire position that unlatches said trigger to free said drive member for forward movement under the influence of said drive spring bias; wherein as said housing is moved away from the injection site following an injection, said housing spring bias urges said front body portion forwardly back towards said closed position to shroud said needle; a releasable safety latch preventing rearward movement of said front body portion from said closed position until release of the safety latch, and a latch for latching said forward body portion in a extended, shrouding position.