Medical or dental hand instrument, e.g. for cutting or drilling, has an electrically activated tool that is supplied by leads formed on an insulated shaft by deposition of an electrical layer and then erosion to form two strips

摘要

Medical or dental hand instrument (1) has a longitudinal shaft (3) made of electrically insulating material in the forward region of which is at least one electrical load (4) that is connected to an electrical power source via two electrical leads (46, 47). The leads are formed from an electrically conducting layer that is divided into two separate conducting strips (46a, 47a) that are formed by erosion of the conducting layer. An independent claim is made for a method of manufacture for a medical or dental hand instrument with at least one electrically activated tool or instrument element. Conducting leads on the shaft are formed by deposition of an electrically conducting layer over an isolated shaft substrate and then erosion of an area of the conducting layer to form two conducting leads.