Centrifugal deflection device for a surgical or dental handpiece for removing foreign matter
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United States of America Patent
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Oct 31, 2017
Grant Date -
Apr 23, 2015
app pub date -
Dec 22, 2014
filing date -
Jan 14, 2010
priority date (Note) -
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Abstract
Centrifugal deflection device intended to be fitted to a surgical or dental handpiece to prevent the penetration of foreign matter that results from an operation, the centrifugal deflection device including a ring coupled in rotation either directly or via a tool shank to a drive shaft of the handpiece. This device is characterized in that the ring is covered by a sleeve secured to the front end of the body of the handpiece and which, with the ring, delimits an ejection chamber. The ejection chamber includes an inlet that communicates with a rear area of the handpiece and an outlet that communicates with the external environment, the ring having a first diameter at the outlet of the ejection chamber and a second diameter at the inlet of the ejection chamber, the first diameter of the ring being larger than the second diameter of the ring.
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