This device comprises an elongate tubular body (1) able to be engaged so that it can slide inside a trocar (T) equipped with a viewing system and to protrude by one of its ends beyond the orifice, said end having retractable arms (4a, 4b) and retractable needles (5a, 5b) able to form, on either side of the orifice, in the thickness of the wall, channels oriented angularly and symmetrically relative to said orifice and to grasp at least one suture thread (F) packaged in a cylindrical end-piece (3) at the protruding end of the tubular body (1), said needles (5a, 5b) being positioned in oriented housings formed in the thickness of the body to protrude therefrom angularly symmetrically and pass through openings (2a, 2b) in the trocar in order to grasp the strands of the thread supported by the arms (4a, 4b) to form a loop on one side of the orifice and to allow the strands of said loop to be engaged in the channels in order to be recovered on the other side of the orifice after removal of the trocar and the body, to make a knot.
