Patent ID: 9566100
Date: 2017-02-14
CPC Classifications: A61B,A61F

Claim:
1. A screw, comprising: a shaft extending from a head to a tip and including threads disposed on an external surface of the shaft, a plurality of slots and a plurality of shaft grooves disposed linearly with each other from approximately the head to the tip, each slot positioned serially between a pair of shaft grooves, the plurality of slots and plurality of shaft grooves are disposed on a plurality of sides of the shaft at approximately ninety degrees or less from each other, the threads are discontinuous at each slot and at each shaft groove, each slot is formed completely through a portion of the threads, the head including an opening and the tip including another opening, the plurality of shaft grooves being configured to be guided by an internal surface of a drill guide, and each shaft groove having a first width that varies along the shaft, each slot having a second width that varies along the shaft, and a first maximum width in the first width is less than a second maximum width in the second width; and a cannula positioned within the shaft and extending from the opening to the another opening, each slot extending all the way to the cannula to form a through hole opening between the cannula and the external surface, a portion of a sub-set of the plurality of shaft grooves are disposed on the tip, the tip being formed between the another opening and a tapered end of the shaft.