Bone Expander
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United States of America Patent
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Issued Date -
Feb 10, 2022
app pub date -
Aug 6, 2020
filing date -
Aug 6, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A bone expander contains: a body including a limitation section formed on an upper end of the body, a drill tip formed on a lower end of the body and extending from a bottom of the limitation section, a defining shoulder formed in an expanding umbrella shape and between the bottom of the limitation section and the drill tip, and multiple spiral ribs formed on the drill tip and the limitation section. The drill tip has multiple chip delivery grooves, and a respective chip delivery groove is defined between the drill tip and a respective spiral rib. The limitation section has multiple guide flutes corresponding to the drill tip and extending from the multiple chip delivery grooves, the drill tip has a cutting portion extending from a distal end thereof, and the cutting portion has a conical face formed thereon.
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