Integrated cement delivery system for bone augmentation procedures and methods
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United States of America Patent
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Apr 2, 2013
Grant Date -
Apr 9, 2009
app pub date -
Oct 7, 2008
filing date -
Apr 7, 2006
priority date (Note) -
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Abstract
A cement delivery system for vertebroplasty including a rigid cannula having a tubular inner wall defining a central conduit to deliver bone cement and a tubular outer wall extending around the inner wall and spaced apart therefrom to define a peripheral conduit for aspirating bone fluids. Aspirating means communicate with a proximal outlet port of the peripheral conduit to create a pressure gradient between the central conduit and the peripheral conduit to provide a hydraulic force guiding the displacement of bone fluid and the flow of cement. Also, a bone cement delivery system including a rigid cannula having a tubular inner wall defining a central conduit, a tubular outer wall extending around the inner wall and spaced apart therefrom to define a peripheral conduit, and a tubular middle wall extending between the inner and peripheral walls and spaced apart therefrom to define a middle conduit around the central conduit.
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