Patent ID: 8906025

Claim:
A surgical instrument, comprising: a shaping instrument for shaping a bone; a housing having an internal wall defining a longitudinal cannula; a central shaft positioned in said longitudinal cannula of said housing, said central shaft having a longitudinal axis and a longitudinal bore, said central shaft moveable within said longitudinal cannula of said housing relative to said housing along said longitudinal axis of said central shaft, said central shaft having a proximal end and a distal end securable to said shaping instrument; an impaction surface facing proximally, away from a distal end of the surgical instrument, said impaction surface forming said proximal end of said central shaft, whereby impacting said impaction surface applies a proximal to distal force to said central shaft; an extraction lever pivotally connected to said housing, said extraction lever having an extraction lever impaction surface facing proximally, away from the distal end of the surgical instrument, said extraction lever impaction surface moveable relative to said central shaft, said extraction lever having an extraction arm opposite said extraction lever impaction surface, said central shaft having an extraction surface facing distally away from a proximal end of the surgical instrument, said extraction arm positionable to contact said extraction surface, whereby impacting said extraction lever impaction surface positions said extraction arm in contact with said extraction surface and applies a distal to proximal force to said central shaft; and a locating feature moveably positioned in said longitudinal bore of said central shaft; wherein said shaping instrument includes a protrusion having a ramp positioned to contact the locating feature, wherein movement of said shaping instrument causes the locating feature to ride along the ramp and be displaced from a biased position.