Methods for preparing medical implants from calcium...

B - Operations – Transporting – 29 – C

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B29C 39/02 (2006.01) A61F 2/28 (2006.01) B29C 39/12 (2006.01)

Patent

CA 2534826

The present invention discloses a medical implant made from calcium phosphate cement, and in particular to a method of preparing a molded and hardened calcium phosphate cement article having a superior compressive strength for use as medical implant. The molded and hardened calcium phosphate cement article may be in the forms of a dense block, a porous block for use as tissue- engineered scaffold, or a dual function block comprising a dense cortical portion (D1) bearing the majority of load and a porous cancellous portion (P1) allowing a rapid blood/body fluid penetration and tissue growth.

L'invention concerne un implant médical fait de ciment de phosphate de calcium, et en particulier un procédé de préparation d'un article moulé et durci fait de ciment de phosphate de calcium et qui présente une résistance supérieure à compression, cet article pouvant être utilisé comme implant médical. L'article moulé et durci fait de ciment de phosphate de calcium peut être sous la forme d'un bloc dense ; d'un bloc poreux servant de structure d'échafaudage produite par génie tissulaire ; ou d'un bloc à deux fonctions comprenant une partie (D1) corticale dense qui porte la majeure partie de la charge, et une partie (P1) spongieuse poreuse qui permet une pénétration de sang/fluide corporel et une croissance tissulaire rapides.

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