Patent ID: 6267025
Filing Date: 2001-07-31
Classification: B25B

Abstract:
A screw extractor for removing broken or damaged screws from bone or wood, said extractor comprising:(a) an elongated shaft having a first and a second end, said first end including a head constructed and arranged to allow transmission of rotational force to said extractor;(b) said second end of said shaft having a tapered, threaded opening leading toward said first end and defining a hole saw at the lowest portion of said second end, wherein the spatial relationship between the threaded opening and the hole saw remains constant such that the rotational force drives both the hole saw to cut through the bone or wood around said screw allowing the threaded opening access to the screw and the threaded opening to engage the screw, said tapered, threaded opening being sized to initially pass over said screw and to abut against said screw as said screw passes further up into said opening, said tapered threads being opposite to the thread direction of said screw.