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Method of forming microparticles that include a bisphosphonate and a polymer

  • US 20050260272A1
  • Filed: 05/05/2005
  • Published: 11/24/2005
  • Est. Priority Date: 05/05/2004
  • Status: Abandoned Application
First Claim
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1. A method of forming microparticles that include a bisphosphonate and a polymer, comprising the steps of:

  • a) forming a water-in-oil emulsion by mixing an aqueous solution of the bisphosphonate with a combination of a poly(lactide) or a poly(lactide-co-glycolide) polymer and a polymer solvent, wherein the molar ratio of the lactide component to the glycolide component in the polymer is at least about 65;

    35; and

    b) mixing at least one aqueous liquid with the water-in-oil emulsion to form a water-in-oil-in-water emulsion and to extract the polymer solvent from the polymer, thereby forming the microparticles.

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