An instrument for harvesting an iliac bone graft comprises an elongate handle having a proximal gripping portion terminating in a substantially blunt striking surface, and a distal working portion including a pair of longitudinally extending, transversely spaced apart blade retaining slots. A pair of...http://www.google.co.uk/patents/US5423825?utm_source=gb-gplus-sharePatent US5423825 - Spinal fusion instruments and methods
