Patent ID: 7789884

Claim:
An acetabular cutter for preparing an acetabulum comprising: a hollow handle; a drive shaft extending along an axis rotatably and slidably mounted within said hollow handle, said shaft having a rotating head at a first end and a second end connected to a power source; an acetabular rim cutter connected to said drive shaft rotating head for axial and rotational movement thereof at the first end thereof, said cutter having teeth thereon concentric about a rotational axis of said head and the teeth, upon rotation, forms a planar annular cutting face extending in a plane perpendicular to the drive shaft axis capable of forming an outwardly facing annular planar surface around the circumference of the acetabulum in a plane perpendicular to the drive shaft axis; a guide element mounted on said handle freely rotatable with respect to the drive shaft for engaging the acetabulum and extending beyond said first drive shaft end, the guide element being axially movable along said rotational axis, the acetabular rim cutter movable with respect to the guide element in the direction of the axis of the drive shaft and having a diameter greater than a maximum diameter of the guide element; and a spring element acting between the guide element and the acetabular rim cutter along in the direction of the axis between the handle and the guide element and a stop means for limiting the travel of the rim cutter along the axis with respect to the guide element.