Composition for use in making bone cement
AssigneesBonar Cole Polymers Limited, London Hospital Medical College
InventorsMichael Braden, Laurence G. Wood
Life of this patent
Estimating the term…
Abstract
A composition for forming a bone cement or the like, comprising a powder component and a monomer component, the powder component comprising ethylmethacrylate polymer beads incorporating particles of opacifier therein and the monomer component comprising n-butyl methacrylate.
Claims6
A composition for use in making a bone cement, the composition comprising a powder polymer component and a monomer component therefor, the components being sterile for medical use, an opacifier being incorporated within the polymer powder component, wherein the polymer is ethylmethacrylate polymer and the monomer is n-butyl methacrylate, whereby on polymerization of polymer and monomer little monomer is released on setting.
A powder component consisting essentially of sterilised poly (ethylmethacrylate) having a molecular weight in the range of about 150,000 to 1,500,000, the polymer being in the form of beads having a particle size distribution in the range of about 15 to 100 micron, and particles of an opacifier incorporated within the beads by ball, high speed or like milling.
Dependencies are inferred from the claim text.