Method of forming attachment surfaces on implants

Details Method of forming attachment surfaces on implants Method of forming attachment surfaces on implants

A - Human Necessities

61

L

A61L 27/00 (2006.01) A61F 2/30 (2006.01) A61L 27/18 (2006.01) B29C 35/08 (2006.01) B29C 37/00 (2006.01) A61F 2/00 (2006.01) A61F 2/34 (2006.01) A61F 2/36 (2006.01) B29C 33/52 (2006.01)

Patent

CA 2068175

An improved method of producing a site for tissue ingrowth on a surgical implant 20, 20' by embedding a space occupier 10 possessing a desired pattern in the surface of the implant at the desired location for ingrowth and then solubilizing the embedded space occupier 10 to leave the pattern on the implant surface. Preferably, the implant 20, 20' is fabricated from a composite comprising a semi-crystallinethermoplastic resin such as polyetheretherketone or polyphenylene sulfide, and the space occupier 10 is an acid-soluble metal plate machined to produce the desiredpattern and removed by aqueous acid solution. The space occupier 10 is embedded onto the composite surface by induction heating.

Méthode améliorée de fabrication d'un site favorable à l'interposition de tissus sur un implant chirurgical (20, 20') obtenue en noyant un occupant d'espace (10), présentant un motif souhaitable, dans la surface de l'implant à l'endroit voulu pour obtenir une interposition, puis en solubilisant l'occupant d'espace (10) noyé pour laisser l'empreinte du motif sur la surface de l'implant. De préférence, l'implant (20, 20') est fait d'un matériau composite comprenant une résine thermoplastique semi-cristalline telle que de la polyéthercétone ou un poly(sulfure de phénylène). L'occupant d'espace (10) consiste en une plaque métallique soluble dans l'acide, usinée pour produire le motif souhaitable, et retirée au moyen d'une solution acide aqueuse. L'occupant d'espace (10) est noyé dans la surface composite par chauffage par induction.

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