Self-cutting screw-in element
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United States of America Patent
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Jun 26, 2012
Grant Date -
Jan 31, 2008
app pub date -
Nov 9, 2005
filing date -
Nov 9, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to a self-cutting screw-in element, e.g., an artificial hip joint socket, having a lateral surface which is at least partially curved or buckled in the threaded area, and a thread interrupted by at least one flute having a thread tooth profile tilted in the feed direction, in which the cutting edge formed between flute and thread tooth is displaced on the side of the thread tooth opposite to the feed direction, and/or in which the inclination or twist direction of the flute runs opposite to the twist direction of the thread and the inclination or twist angle of the flute is larger than the pitch angle of the thread. A design of this type is advantageous for specific applications because the forces necessary for screwing-in may thus be significantly reduced without disadvantageous effect on the other properties.
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