Patent ID: 7087059

Claim:
A medical tool for driving a bone screw, comprising: a medical screwdriver having a shaft; a stationary sheath placed about the shaft of the medical screwdriver; a collapsible shield connected at a distal end of the stationary sheath, wherein said collapsible shield includes an upper and a lower portion, wherein each of said upper and lower portions have a distal arm flexibly connected to a proximal arm, and wherein said collapsible shield has an open flex state that entirely covers a screw at a distal end of the shaft of the medical screwdriver wherein said distal arm is distant from said proximal arm, and a closed flex state in which said collapsible shield collapses onto a vertical line defined by the head of said screw and wherein said distal arm is immediately proximate said proximal arm in a vertical orientation for each of said upper and lower portions of said collapsible shield; and a rotation stopper which prevents the sheath from rotating.