Connector assembly for a surgical tool

A connector assembly, comprising:

• a collet having a first section, a second section and a third section;
• a first shoulder being formed between the first section and the second section;
• a second shoulder being formed between the second section and the third section;
• a slot extending partially along a length of the collet;
• a gripper having a centrally located bore, the gripper being rotable about the collet;
• a pair of shelves located within the centrally located bore of the gripper, the shoulder and the second shoulder being aligned over opposing ledges of each of the shelves when the gripper is biased in a first position.

A surgical instrument, comprising:

• a housing;
• a motor positioned within the housing;
• a collet pivotally connected to a motor connecting arm, the collet including a connector assembly for connecting a surgical tool to the collet, the connecting assembly including:
• a gripper having a centrally located bore, the gripper further having a first section, a second section and a third section, the second section having a different cross section than either of the first section and the second section;
• opposing shelves formed in the centrally located bore of the gripper, the opposing shelves forming an elongated slot within the bore;
• a longitudinal slot formed along a length of the collet;
• a shoulder formed between the first section and the second section;
• an opposing shoulder formed between the second section and the third section,
• wherein the shoulder and the opposing shoulder prevent movement of a surgical tool when the gripper is biased in a first position.