The invention concerns a device for injecting a solid medicine (10) comprising a body (2) inside which moves along a general forward moving axis (X-X) a bevelled (34) needle (4) wherein is introduced the medicine (10), said injection device (1) further comprising retaining means for preventing the medicine from falling (10) prior to being injected. The invention is characterized in that the medicine (10) is retained through an elastic deformation imparted to the needle (4) by the retaining means or by an elastic deformation of the retaining means themselves, or still by the combined flexibility of those two means.
