An implant injection device, includes an injection needle, a receiver housing for receiving at least one implant, injection device, including a pushing rod, arranged upstream from the implant housed in the receiver housing, and configured to push the implant through the injection needle between an initial position and a final position, a pushing member for pushing the pushing rod between the initial position and the final position, a retaining member for retaining the pushing rod by friction relative to the injection needle, opposing the displacement of the pushing rod to its final position, it being possible for a user to actuate the retaining member.