| abstract |
A surgical drill guide for directing a guide tube toward a target. The guide tube has first and second sets of teeth extending along an exterior surface thereof. A through passage in an operating mechanism housing receives the guide tube. A first actuator or guide tube advancing mechanism uses a ratchet and pawl mechanism to advance the guide tube distally. A guide tube locking mechanism, that includes another ratchet and pawl mechanism prevents any unwanted proximal motion by providing a releasable lock against any unwanted proximal motion of the guide tube during use. |