A device for closing an access opening formed by a surgical instrument in an abdominal wall, the device comprising: - an elongated tubular body comprising: a cylindrical tip comprising an orifice, said cylindrical tip having retractable arms (4a, 4b) diametrically opposed according to the generators of the tip, and housings formed in the thickness of the tubular body, - a suture packaged in the cylindrical tip, the strands of the suture emerging from the opening of the cylindrical tip, each strand being carried by one of the retractable arms (4a, 4b); - retractable needles (5a, 5b) positioned in the housings and intended to form, on either side of the access opening, in the thickness of the wall, channels oriented angularly and symmetrically with respect to the said opening, the retractable needles (5a, 5b) being able to overflow, guided by the housings, angularly symmetrically with respect to said body, through the wall towards the retractable arms (4a, 4b) to each grasp a strand of the suture, and able to remove the strands in the housings, thus forming a suture loop the device being characterized in that it further comprises - a trocar equipped with a vision system, the trocar being able to slide the tubular body into its cannula so that, once inserted into the cannula, the cylindrical tip of the tubular body extends beyond the end of the cannula, the cannula having openings (2a, 2b) which are positioned in alignment with the housings of the tubular body when inserted into the cannula, so that the needles (5a, 5b) can protrude angularly in a symmetrical manner and be removed through the openings (2a, 2b) - an elongated tubular body comprising: a cylindrical tip comprising an orifice, said cylindrical tip having retractable arms (4a, 4b) diametrically opposed according to the generators of the tip, and housings formed in the thickness of the tubular body, a cylindrical tip comprising an orifice, said cylindrical tip having retractable arms (4a, 4b) diametrically opposed according to the generators of the tip, and housings formed in the thickness of the tubular body, - a suture packaged in the cylindrical tip, the strands of the suture emerging from the opening of the cylindrical tip, each strand being carried by one of the retractable arms (4a, 4b); - retractable needles (5a, 5b) positioned in the housings and intended to form, on either side of the access opening, in the thickness of the wall, channels oriented angularly and symmetrically with respect to the said opening, the retractable needles (5a, 5b) being able to overflow, guided by the housings, angularly symmetrically with respect to said body, through the wall towards the retractable arms (4a, 4b) to each grasp a strand of the suture, and able to remove the strands in the housings, thus forming a suture loop the device being characterized in that it further comprises - a trocar equipped with a vision system, the trocar being able to slide the tubular body into its cannula so that, once inserted into the cannula, the cylindrical tip of the tubular body extends beyond the end of the cannula, the cannula having openings (2a, 2b) which are positioned in alignment with the housings of the tubular body when inserted into the cannula, so that the needles (5a, 5b) can protrude angularly in a symmetrical manner and be removed through the openings (2a, 2b)