Coating processes – Medical or dental purpose product; parts; subcombinations;... – Implantable permanent prosthesis
Patent
1992-06-15
1994-11-22
Beck, Shrive
Coating processes
Medical or dental purpose product; parts; subcombinations;...
Implantable permanent prosthesis
623 16, 424426, 525937, 523113, A61F 228
Patent
active
053667565
ABSTRACT:
A porous bioabsorbable surgical implant material is prepared by coating particles of bioabsorbable polymer with a tissue ingrowth promoter. Typical polymers include polymers of glycolide, lactide, caprolactone, trimethylene carbonate, dioxanone and physical and chemical combinations thereof. The tissue ingrowth promoter can include calcium hydroxide and/or a hydrophillic coating material. The hydrophillic coating material can be bioabsorbable or non-bioabsorbable. A typical non-bioabsorbable hydrophillic coating material is polyhydroxymethylmethacrylate (PHEMA). The bioabsorbable implant material may also contain a therapeutic agent. Typical therapeutic agents include an antimicrobial agent, dye, growth factor and combinations thereof. Typically, the particles are prepared by rotary atomization and coated by spraying.
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Chesterfield Michael P.
Torgerson Robert D.
Beck Shrive
Cameron Erma
United States Surgical Corporation
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