An injection cannula array device comprising - a distribution chamber defined by - a base end comprising a plurality of apertures for fluid communication from the distribution chamber to the outside, - side walls connected to the base end, and - a top end comprising an aperture for fluid communication from the distribution chamber to the outside, wherein said top end is connected to a fluid conduit for fluid communication through the aperture, and wherein the fluid conduit comprises a fluid conduit connector on the distal end from the distribution chamber, the fluid conduit connector suitable for connecting to a syringe, wherein the device further comprises: - a plurality of cannulas, wherein each cannula is arranged for fluid communication with the respective plurality of apertures, and wherein each cannula extends from the respective aperture to a cannula tip distal from the base end outside the distribution chamber, wherein the base end comprises - a skirt extending from the outer edge of the base end at least a part of the length of the plurality of cannulas, wherein the skirt is suitable for leaving a distinct guiding mark on a skin surface after the skirt has been pressed against said skin surface, wherein the plurality of cannulas are arranged in rows, with a distance D between each of the plurality of cannulas, and wherein there is a row of said plurality of cannulas adjacent to the side skirt, and wherein the distance from each cannula located adjacent to the skirt to the outer edge of said skirt is between 1⁄2 D x Cos25° - 1⁄2 D x Cos35°, when measured at angle perpendicular to the skirt, and wherein the skirt extends between 5-90%, of the length of the plurality of cannulas, characterized in that the cannula array device comprises: - a piston arranged slidingly within the distribution chamber, wherein - the piston is arranged sealingly to the side walls, and - the piston comprises an aperture for fluid communication from the distribution chamber through the fluid conduit, wherein - the piston is configured with a start position at the top end and an end position at the base end, and - wherein the piston is connected to the fluid conduit and configured to travel from the start position towards the end position when a predetermined force is applied to the fluid conduit in the direction of the base end. - a distribution chamber defined by - a base end comprising a plurality of apertures for fluid communication from the distribution chamber to the outside, - side walls connected to the base end, and - a top end comprising an aperture for fluid communication from the distribution chamber to the outside, wherein said top end is connected to a fluid conduit for fluid communication through the aperture, and wherein the fluid conduit comprises a fluid conduit connector on the distal end from the distribution chamber, the fluid conduit connector suitable for connecting to a syringe, - a base end comprising a plurality of apertures for fluid communication from the distribution chamber to the outside, - side walls connected to the base end, and - a top end comprising an aperture for fluid communication from the distribution chamber to the outside, wherein said top end is connected to a fluid conduit for fluid communication through the aperture, and wherein the fluid conduit comprises a fluid conduit connector on the distal end from the distribution chamber, the fluid conduit connector suitable for connecting to a syringe, - a plurality of cannulas, wherein each cannula is arranged for fluid communication with the respective plurality of apertures, and wherein each cannula extends from the respective aperture to a cannula tip distal from the base end outside the distribution chamber, - a skirt extending from the outer edge of the base end at least a part of the length of the plurality of cannulas, wherein the skirt is suitable for leaving a distinct guiding mark on a skin surface after the skirt has been pressed against said skin surface, wherein the plurality of cannulas are arranged in rows, with a distance D between each of the plurality of cannulas, and wherein there is a row of said plurality of cannulas adjacent to the side skirt, and wherein the distance from each cannula located adjacent to the skirt to the outer edge of said skirt is between 1⁄2 D x Cos25° - 1⁄2 D x Cos35°, when measured at angle perpendicular to the skirt, and wherein the skirt extends between 5-90%, of the length of the plurality of cannulas, characterized in that the cannula array device comprises: - a piston arranged slidingly within the distribution chamber, wherein - the piston is arranged sealingly to the side walls, and - the piston comprises an aperture for fluid communication from the distribution chamber through the fluid conduit, wherein - the piston is configured with a start position at the top end and an end position at the base end, and - wherein the piston is connected to the fluid conduit and configured to travel from the start position towards the end position when a predetermined force is applied to the fluid conduit in the direction of the base end. - a piston arranged slidingly within the distribution chamber, wherein - the piston is arranged sealingly to the side walls, and - the piston comprises an aperture for fluid communication from the distribution chamber through the fluid conduit, wherein - the piston is configured with a start position at the top end and an end position at the base end, and - wherein the piston is connected to the fluid conduit and configured to travel from the start position towards the end position when a predetermined force is applied to the fluid conduit in the direction of the base end.