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US 2016/0256209 A1Published application
Awl-tipped pedicle screw and method of implanting same
AssigneeWarsaw Orthopedic, Inc.
InventorsJean-Pierre Mobasser, Y. Raja Rampersaud
Life of this patent
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Abstract
A bone screw and method of inserting the same is disclosed. In one example, the bone screw includes an awl tip for creating a pilot hole in the pedicle of a vertebra without having to predrill a starter hole. One or more threads located adjacent to the awl tip engage the wall of the pilot hole and draw the screw into the bone, thereby eliminating the need to drill and tap a hole in the bone prior to implantation of the screw.
Claims21
1-18. (canceled)
A bone screw, comprising:
- a tip portion comprising an awl tip, said awl tip having a pyramidal configuration capable of creating a hole in bone;
- a shank portion proximate to said tip portion;
- a head portion proximate to said shank portion;
- and
- at least one helical thread which begins at said tip portion and continues through said shank portion.
2 more elements
A pedicle screw, comprising:
- a tip portion located at the distal end of said pedicle screw, said tip portion comprising an awl tip, said awl tip having a pyramidal configuration capable of starting a hole in bone;
- a head portion located at the proximate end of said pedicle screw;
- a shank portion disposed between said tip portion and said head portion;
- and
- at least one thread beginning on said tip portion and continuing in said shank portion, said at least one thread overlapping a portion of said awl tip.
2 more elements
A bone screw, comprising:
- a tip portion, comprising an awl tip and at least one thread;
- a shank portion, located proximate to said tip portion and comprising part of the at least one thread of the tip portion;
- and
- a head portion proximate to said shank portion and adapted to receive a driving tool;
- wherein said awl tip has a pyramidal configuration capable of creating a hole in bone when torsional force is applied to the screw;
- wherein said at least one thread is disposed on said tip portion such that said thread engages the walls of the hole created by said awl tip and draws the screw into bone.
3 more elements
Dependencies are inferred from the claim text.