| 摘要 |
A driver including a hand piece adapted to be held in the hand of a user, an air motor mounted within the hand piece, and a barrel coupled transversely to the hand piece. A medical instrument is rotatably mounted in the barrel and releasably retained therein by a releasable detent located to the rear of the barrel. Air flow to the air motor is controlled by a valve having a trigger-like operating member. The direction of rotation of the air motor is controlled by a manually operable reversing valve.
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