To connect our device to the user’s stump, we designed a technical piece, a fully functional stem, that is osseointegrated.
This internal device needs an extremely high precision for machining parts. Indeed, biofilm and membrane’s nanometric scales and necessity to extend a member leads to constraining strength and precision’s placement. Directly in contact with bone, sintered ceramic’s part links the bone and the titanium stem together (Figure1). Where the stem emerges from the bone, its diameter enlarges to increases from 6mm to 10mm. The biofilm takes place in the few centimeters available between bone and skin. It is contained by a hemi-permeable membrane. The latter, in PEDOT: PSS, is the surface upon which the nerves come to fixate. This also allows the nervous current to traduce to an electrical current. This membrane is placed around the tube and conducts the signal to the outside (Figure 2).