Polymer cement for percutaneous vertebroplasty and methods of using and making same
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United States of America Patent
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Apr 10, 2012
Grant Date -
Feb 21, 2008
app pub date -
Jun 4, 2007
filing date -
May 14, 2004
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Abstract
The invention provides a fluid cement for medical use for bone reconstruction, in particular for filling the vertebral body, and a binary composition which is intended for the preparation of such a cement. The invention also provides a device for conditioning the binary composition, and a method of preparing a bone cement from a binary composition. The fluid cement according to the invention comprises: a) approximately 60% to 85% by weight of a polymer comprising a polymethylmethacrylate and a methylmethacrylate monomer and b) approximately from 15 to 40% by weight of a radio-opaque composition. Preferably, the radio-opaque composition comprises a radio-opacifier, such as barium sulfate and zirconium dioxide, in a mixture with a calcium phosphate, for example apatite hydroxide.
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