| 摘要 |
There is provided a tool driver (10) having a shaft (12) with a longitudinal axis and opposite ends (14,16) and tools therefor. A boss (18) is secured at one of said shaft ends (16) by which the tool driver is connected to a rotary tool (110,112). A tool collet (20) is secured at the other of the shaft ends (16) by which the tool driver may be driven by a surgical hand piece having a chuck in which the collet may be positioned. The boss has a surface (38) which engages the tool and positions the tool exactly coaxially of the tool driver. A latch mechanism (40,70) is provided to hold the rotary tool on the boss, whereby the rotary tool is held exactly coaxially of the driver during use. The rotary tool which is used with the driver has a bottom tool driver opening (116) which has the same dimensions as the boss of the tool driver of the invention. The boss thus fills the opening and the opening is complementary to the boss. The boss of the tool driver and the bottom tool driver opening of the tool are both positioned precisely coaxial of the axis of the tool and longitudinal axis of the tool driver about which the cutting edges are precisely positioned and rotated. <IMAGE> |
