Handpiece for dental surgery

摘要

The handpiece has an axial connection between the main body and an internal assembly which is supported in it. The connection has a retractable retainer between the main body (1) and the internal assembly. An implement is necessary to release the connection between the inner assembly and a detachable tool bit (14). The retainer can be a lug (4) sliding radially in a dowel and fixed to the inner assembly by an opening formed in it. A return spring is placed in an opening in the implement with the lug placed centrally with respect to the longitudinal axis of the handpiece.