Drill centering tool for removal of orthopedic plug
OwnerRichard Kertzner, Michael Wanginventors
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Abstract
A tool for centering an elongated drill bit within an elongated canal surrounded by bone tissue. A sleeve having an expandable diameter is internally threaded. The sleeve threadedly engages an externally-threaded cylindrical guide. A key includes a handle at one end of an elongated rod. The rod includes transversely-protruding buttons for engaging the guide so that rotation of the handle produces rotation of the guide to cause radial expansion of the sleeve. This results in symmetrical contacting of the interior surfaces of the bone tissue, thereby creating a vertical, centered channel with respect to the bone, that extends through the tool for guiding the drill bit.
Claims22
A tool for centering a drill bit within an elongated canal at the interior of bone tissue comprising, in combination:
- a) an exteriorly-threaded guide;
- b) a hollow, interiorly-threaded sleeve;
- c) said sleeve being threadedly engaged to said guide;
- d) the diameter of said sleeve being responsive to rotation of said guide;
- e) a key;
- f) said key comprising an elongated rod having a handle fixed to an end thereof;
- and
- g) said elongated rod having a plurality of transversely-protruding tabs for engaging said guide so that rotation of said key produces rotation of said guide whereby the diameter of said sleeve is controlled by rotation of said handle.
Dependencies are inferred from the claim text.