3D printed implant with internal channels

A method of tissue reconstruction or tissue augmentation, the method comprising implanting into the body of a subject an implant, wherein the implant comprises:

• a three-dimensionally (3D) printed structure of layers, wherein each layer comprises an infill pattern of the three-dimensionally printed structure, the infill pattern of each layer comprising a set of infill lines, wherein the layers are arranged on top of one another such that a plurality of adjacent tilted hollow channels comprising walls are formed within the implant;
• wherein the adjacent tilted hollow channels are separated from one another by the walls, wherein a wall of a first tilted hollow channel is a wall of a second adjacent tilted hollow channel;
• and
• wherein each tilted hollow channel comprises slanted walls, wherein a slanted wall is formed by sections of the infill lines of a plurality of alternate layers of the printed structure of layers, wherein the sections of infill lines are oriented in a first direction, and arranged above one another with a lateral offset, wherein the lateral offset is a dimension in a direction parallel to a first outer surface of the implant, wherein the lateral offset is larger than zero and less than 50% of a lateral channel dimension,
• wherein the plurality of tilted hollow channels extends between a first outer surface of the implant and a second outer surface of the implant,
• wherein a tilted hollow channel is oriented in a direction which is tilted with respect to a reference axis perpendicular to the first outer surface of the implant.