Patent ID: 8979807
Filing Date: 2015-03-17
Classification: A61M

Abstract:
1. A device for automatic injection of a product into an injection site, the product being carried by a container having an open proximal end and a substantially closed distal end carrying a needle to provide an outlet port for the product from the container, and a piston provided in the container and distally movable with respect to the container, the distal movement of the piston causing the product to be expelled from the container through the needle thereby realizing the injection of said product, said device comprising: a piston rod intended to be coupled to said piston in the distal direction during the injection, biasing means for causing distal movement of said piston rod ( a housing designed for receiving at least partially said container, said piston rod and said biasing means, and controlling means designed for producing an audible indicator when said piston is near said distan end of the container and the product is substantially completely expelled from the container thereby providing an indication to a user that injection of the product is completed, wherein, said controlling means comprise a breakable part having a proximal end directly or indirectly coupled to said housing, and a distal end directly or indirectly coupled to said piston rod, said breakable part being caused to break at the end of injection, under the effect of the biasing means, thereby producing said audible indicator.