Patent ID: 8562635

Claim:
A device for treating a body site, comprising: a drive shaft having a longitudinal axis, a rear end associable with a drive unit, a front end, a central borehole, and a pivot at the front end eccentrically disposed with respect to the longitudinal axis of the drive shaft and having a central axis parallel to and offset from the longitudinal axis of the drive shaft; an oscillating shaft having a longitudinal axis, a central borehole, a front end associable with a surgical tool or instrument, and a rear end; a mechanism disposed between the front end of the drive shaft and the rear end of the oscillating shaft, for converting a rotational movement of the drive shaft into an oscillating rotational movement of the oscillating shaft concentric with the longitudinal axis of the oscillating shaft; and a guide wire configured to extend through the central boreholes of the drive shaft and the oscillating shaft, wherein the longitudinal axes of the drive shaft and the oscillating shaft are substantially coaxial.