A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/25
A61C 8/00 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01) A61F 2/00 (2006.01) A61F 2/34 (2006.01) A61F 2/36 (2006.01)
Patent
CA 1323779
ABSTRACT The invention relates to bone implants e.g. to replace teeth or parts of bone tissue. It contains metal parts (1) when strength is needed, which are shielded by a bioglass (e.g. Ca-P-glass) mixture attached to the metal. The glass can be made non-resorbable by metal-oxide additives. In addition the implant contains a Ca-P- glass mixture which is resorbable to bone or biomass. Hydroxyl- apatite (HA) can be added both to the resorbable (4) and non- resorbable (2) Ca-P-glass, so that (2) & (4) bind to tissue, to each other and to metal (1). Binding to bone can be enhanced by addition of an inter-layer between the two layers further from (4) and closer to (2) the metal, which inter layer is made of a mix- ture of slowly resorbable Ca-P-glass and HA. When high strength is not needed, the metal core is replaced by non-resorbable Ca-P- glass. The mixture of Ca-P-glass and HA is used also as a granule filler in bonecavities in the invention.
569390
Smart & Biggar
Yli-Urpo Antti
LandOfFree
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