Patent ID: 7163542
Filing Date: 2007-01-16
Classification: A61B

Abstract:
1. A tool comprising: a drill bit having a proximal bit end, a distal bit end, the distal end configured to cut bone; a housing having a first end, a second end and a first bore configured to slidably receive the drill bit, the second end being adapted for association with a bone portion; and an adjustable depth stop assembly, having a proximal end, a distal end and a second bore configured to slidably receive the drill bit, comprising a portion configured to selectively lock the drill bit to the second bore, an adjustment sleeve configured to slidably engage the drill bit, and a shuttle member adapted to be slidable with respect to the adjustment sleeve between a first position in which the adjustable depth stop is axially locked to the drill bit and a second position in which the adjustable depth stop is axially movable with respect to the drill bit, wherein when the drill bit is locked to the adjustable depth stop assembly the first end of the housing is located a first axial distance from the distal end of the adjustable depth stop assembly, the first axial distance proportional to a maximum drilling depth into the bone portion.