Patent ID: 7081122

Claim:
A tool system comprising a trocar instrument including a trocar handle with first and second finger gripping surfaces mutually sized and laterally spaced apart a first distance for gripping simultaneously by an index finger and a little finger of a hand, the trocar handle including a recess between the first and second finger gripping surfaces, a cannula instrument including a cannula handle with third and fourth finger gripping surfaces mutually sized and laterally spaced apart a second distance less than the first distance for gripping simultaneously by two adjacent fingers of a hand, and the cannula instrument including a bore sized to accommodate passage of the trocar instrument to form a composite instrument, the cannula handle nesting within the recess when the composite instrument is formed to form a composite handle comprising the first, second, third and fourth finger gripping surfaces of the trocar and cannula handles resting in an adjacent and generally coplanar relationship for gripping simultaneously the first finger gripping surface by an index finger of a hand, the second finger gripping surface by a little finger of the hand, the third finger gripping surface by a ring finger of the hand, and the fourth finger gripping surface by a middle finger of the hand, to transmit rotational and/or longitudinal forces to the composite instrument sufficient to advance the composite instrument through tissue and/or bone.