A manual surgical device designed to simultaneously place, angle, and guide a rotating surgical drill on hard tissue (e.g., bone); some types are also intended for guiding bone-coring instruments (e.g., keel punch). It is designed in a tubular form or with guiding holes and may have serrations at its distal end to enable firm placement on hard tissue surfaces (it is not bored into the tissue); it can have a handle or be held by another device (e.g., orthopaedic jig), and typically allows protection of the surrounding soft tissue during surgery. It is typically made of metal and may have graduations along its length; it is not custom-made for a specific patient. This is a reusable device.
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