The invention relates to a device for assisting the attachment after placement of a
surgical implant, i.e. An interbody fusion cage, in particular a fusion cage for a zygopophyseal joint, in which the
implant (2) is intended to be inserted into a bone cavity, through the
bone tissue before reaching the
implant (2) and into a hole (20) therein, by at least one screw or the like, the invention relates to a device (1) for fixing an
implant (2) in a bone cavity, then screwed into
bone tissue, comprising: a combination of means (31) for holding the implant (2) designed to be able to hold the implant (2) when the implant is arranged in the bone cavity, and drilling guide means (42), the drilling guide means (42) being connected to the implant (2) by means of configurable connection means (40, 40 '). 41) is fixedly connected to the retaining means (31) such that the drilling axis (X) is aligned with the hole (20).