Here is a prototype implant component made from titanium alloy. It is a laser welded assembly with turning, wire EDM, sinker EDM and laser welding all on a unit less than 5mm tall and about 5mm diameter.
The center screw can rotate inside the mating part but is captive. A laser welded collar holds it in place
This is an end-on view of one of the screwdrivers that forms part of the assembly. It is wire EDM cut from hardened 420M stainless steel, and has a taper to allow it to jam into the screw socket. It also has a center hole to permit another screwdriver to go through it. It is about 0.080″ diameter at the tip. The knurled screwdriver head is 304 stainless steel and was laser welded onto the tip