The disclosure relates to a method of manufacturing a medical implant (1) or structures for a medical implant. Disclosed is an improved occluder, which does not damage the surrounding body tissue. In one embodiment, a method of manufacturing a 3D fabric of strands for forming a medical implant, such as a septal, ventricular or left auricular appendix occluder is provided. The method comprises intertwining the strands (40) along a length of the 3D fabric for forming a primary 3D fabric structure. The intertwining is non-continuous, such as interrupted along the length, for forming a secondary structure of the 3D fabric without intertwining.
