Screw extraction and insertion device

A screw extraction/insertion device comprising:

• a shaft sleeve for engaging a wrench shaft that extends along a longitudinal axis, the shaft sleeve having a proximal portion and a distal portion arranged such that, when the shaft sleeve is engaged with the wrench shaft, the proximal portion and the distal portion are angularly displaced from each other along the longitudinal axis and are adjacent to opposite sides of the wrench shaft, the distal portion adapted for engaging a screw;
• and
• a shoulder that extends radially inward from the distal portion.

A screw extraction/insertion device comprising:

• a shaft sleeve extending along a central longitudinal axis, the shaft sleeve including a proximal portion and a distal portion that extend along opposite sides of the central longitudinal axis and are angularly displaced from each other, the distal portion adapted for engaging a screw and the proximal portion having a handle extending therefrom, wherein the shaft sleeve further includes an intermediate portion that connects the proximal portion and the distal portion;
• and
• a shoulder that extends radially inward from the distal portion towards the central longitudinal axis.

A screw extraction/insertion device comprising:

• a shaft sleeve extending along a central longitudinal axis, the shaft sleeve including a proximal portion and a distal portion that extend along opposite sides of the central longitudinal axis and are angularly displaced from each other, the distal portion adapted for engaging a screw, the shaft sleeve further including an intermediate portion that longitudinally connects the proximal portion and the distal portion, wherein the distal portion comprises a shoulder extending radially inward about the central longitudinal axis.