Improved calcium phosphate bone cements

Improved calcium phosphate bone cements

  • CN 1,826,145 B
  • Filed: 05/19/2004
  • Issued: 01/11/2012
  • Est. Priority Date: 05/23/2003
  • Status: Active Grant
First Claim
Patent Images

1. spontaneous coagulation calcium-phosphate cement comprises:

  • (i) a kind of powdered ingredients, the mean diameter d of said powdered ingredients 50Less than 15 μ

    m, and (ii) a kind of calcium orthophosphate base powder, the mean diameter d of said powder 50Mean diameter d greater than powdered ingredients 50, Said powdered ingredients and said calcium orthophosphate base powder suspension are in the water that contains dissolved ξ

    Dian Wei raising additive;

    The amount that this ξ

    Dian Wei improves additive is enough to make the ξ

    Dian Wei of particle to be brought up at least-30mV;

    Wherein select to improve additive with the compatible ξ

    Dian Wei of pH that solidifies of the identical calcium-phosphate cement that does not contain ξ

    Dian Wei raising additiveWherein ξ

    Dian Wei raising additive is the lower carboxylic acid chemical compound, and said lower carboxylic acid chemical compound has one or more hydroxyls.

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