Surgical implant and method for its production
Hip endoprosthesis with stepped load-transferring surfaces
Method of preparing glazes
ApplicationNo. 05/893792 filed on 04/05/1978
US Classes:623/23.62, Cement106/676, Glass containing106/677, Organic material containing156/325, Particular adhesive156/89.11, With vitrification or firing ceramic material433/173, By fastening to jawbone433/180, By cement or adhesive501/2, Devitrified glass-ceramics501/39, Pore-forming501/54, More than 90 percent by weight silica501/63, And phosphorus, niobium, or tantalum606/76Specialized coating or material
ExaminersPrimary: Vertiz, O. R.
Assistant: Bell, Mark L.
Attorney, Agent or Firm
International ClassesA61C 8/00 (20060101)
A61L 27/00 (20060101)
A61L 27/10 (20060101)
AbstractCompositions possessing a porous, high specific area, silica-rich surface, or capable of developing such a surface in vivo, form strong bonds with bone tissue. These compositions are thus excellent materials for dental and surgical implants, or the coatings thereof. Examples of such compositions include highly porous glasses and glass-ceramics comprising at least about 80 weight percent silicon dioxide, hardened inorganic cements such as Portland cement and known silicon dioxide-based biologically active glasses and glass-ceramics. Neither calcium, sodium nor phoshorus compounds are necessary ingredients. Cements which develop the above described surface characteristics in vivo form a strong bond with both bone and implant when used in the fixation of dental and surgical implants, especially those made or coated with a biologically active silicon dioxide-based glass or glass-ceramic.