3 results about "Nano hydroxyapatite" patented technology

A composite artificial joint with artificial cartilage structure features that an artificial cartilage structure layer made of polyvinyl alcohol hydrogel is arranged on the end face of a mechanical supporting unit, which may use a composite material structure body made of nano-hydroxy apatite and/or medical high-molecular material and/or porous mechanical supporting structure and contains the chtosan sponge carrying growth factor. The connection end of mechanical supporting unit and base bone has at least one convex fixing structure.

The invention discloses a preparation method of composite acrylate emulsion. The preparation method comprises the following steps: adding polyoxyethylene octyl phenol ether-10, lauryl sodium sulfate and ammonium persulfate into an emulsifying kettle; adding deionized water, stirring and dissolving, sequentially adding butyl acrylate, methyl methacrylate and methacrylic acid into a pre-emulsifyingkettle, stirring and emulsifying to obtain pre-emulsion of the monomer; sequentially adding sodium bicarbonate and deionized water into a polymerizing pot, starting stirring to dissolve, and placing in a 50 DEG C water bath; filling in a constant pressure dropping funnel, weighing 5 parts of the prepared monomer pre-emulsion, adding into the polymerizing pot, adding a modified nano-hydroxyapatitematerial, weighing ammonium persulfate and dissolving into water, slowly adding into the polymerizing pot, regulating the temperature of the water bath to 82 DEG C, slowly raising the temperature to 82 DEG C, slowly dropwise adding the monomer pre-emulsion, washing the pre-emulsifying kettle, dropwise adding into the polymerizing pot, and regulating the pH value to 8 with ammonium hydroxide, thereby obtaining the composite nano acrylate emulsion.