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US 9,848,927 B2Granted
Self-clearing self-cutting implant
AssigneeIntra-Lock International, Inc.
InventorThierry Giorno
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Abstract
The invention relates to methods of stabilizing bone implants, comprising inserting a self tapping implant having at least two helical grooves running in opposite directions around the implant.
Claims10
A method for installing a self-threading implant in bone, the method including the steps of:
- providing an implant including:
- a body comprising a generally cylindrical portion having an outer circumference and a central rotational axis,
- a helical thread coaxially wound around at least a portion of the outer circumference,
- first and second blades formed at spaced locations in the thread and having respective arcuate cutting edges that curve helically aft and radially outward from adjacent respective minor thread diameters to merge with thread ridges at respective major thread diameters, a forward surface of the first blade being in helical alignment with a forward surface of the second blade, the helical alignment of the forward blade surfaces being in opposite handedness to the helical thread;
- engaging a distal end of the implant against a bone;
- and
- driving the implant into the bone by rotating the implant around its rotational axis such that:
- the arcuate cutting edge of the first blade engages the bone with an arcuate slashing-type cutting action as the thread travels helically forward along a helical insertion path, and
- the second blade passes into the bone as the thread continues to travel helically forward along the helical insertion path.
6 more elements
Dependencies are inferred from the claim text.