Device and method for removing fastening implements from bone

A device for removing from bone, fastening implements embedded in the bone, the device comprising:

• an elongated cylindrical member defining a proximal end and a distal end disposed generally opposite from said proximal end;
• said distal end defining an opening having a central axis along the length of said cylindrical member;
• an elongated cavity extending axially from said opening toward said proximal end and disposed concentrically relative to said opening;
• said cavity being defined by at least two adjacent and concentric sections, each said section being defined by a different diameter wherein as between each two adjacent sections the diameter of the section disposed closer to said opening is the larger diameter of each said two adjacent sections;
• said distal end further defining at least one cutting surface disposed about said opening, said cutting surface being defined by a plurality of teeth;
• and
• said cutting surface being configured to move cutting debris toward said central axis of said opening and into said cavity.

A method for removing from bone, fastening implements such as bone pins and headless bone screws, embedded in the bone, the method comprising the steps of:

• disposing a cylindrical drill bit having an opening configured to receive the end of the fastening implement therein and having a cavity configured with a decreasing diameter as one proceeds deeper into said cavity, concentrically around the site of the bone containing the fastening implement to be removed;
• rotating the cylindrical bit so as to cut into the bone around the exterior surface of the fastening implement at least until galling between the interior surface of the cavity and the exterior surface of the fastening implement causes the implement to adhere to the interior surface of the cavity of the drill bit;
• and
• withdrawing the cylindrical drill bit and adhered implement from the bone.