Completed a time-constrained mechanical design challenge focused on developing an interbody inserter and implant engagement features for posterior lumbar fusion (PLIF) surgery. The task required designing an instrument capable of rigid implant engagement, mallet impaction, controlled release, and a 90-degree implant rotation within an 11 mm × 11 mm surgical window. The design was completed within a 48-hour deadline, emphasizing clear load paths, separation of axial and rotational forces, manufacturability, and surgeon usability. Multiple concepts were explored before converging on a final design that balanced mechanical simplicity and ease of sterilization while meeting all stated functional and dimensional requirements.