Medical or dental handpiece with a push-button for releasing a tool

摘要

Medical or dental hand piece comprises in its front end region a lateral insertion opening (5a) for a tool, and in the opposite region a mounting opening (63) containing an insert (113), and a push button (93c). The insert is arranged so far in the mounting opening that a hollow cylindrical guide section (63b) remains in the free edge region of the mounting opening. The push button corresponds with little movement play to the cross-section of the guide section and engages in the guide section.