Soft prosthesis shell texturing method

A - Human Necessities – 61 – F

Patent

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A61F 2/12 (2006.01)

Patent

CA 2704697

A method of texturing a soft prosthetic implant shell, such as a silicone breast implant shell. A soft prosthetic implant (100) with a textured external surface (104) layer of silicone elastomer and having an open-cell structure is made by adhering and then dissolving round salt crystals. The resulting roughened surface has enhanced physical properties relative to surfaces formed with angular salt crystals. An implant having such a textured external surface layer is expected to help prevent capsular contraction, to help prevent scar formation, and to help in anchoring the implant within the body.

L'invention concerne un procédé de texturation d'une enveloppe d'implant prothétique souple, comme une enveloppe d'implant mammaire en silicone. Un implant prothétique souple (100) comprenant une couche superficielle externe texturée (104) en élastomère de silicone, et possédant une structure à cellules ouvertes, est réalisé en mettant en adhérence et en dissolvant ensuite des cristaux de sel ronds. La surface rugueuse résultante possède des propriétés physiques améliorées par rapport à des surfaces formées avec des cristaux de sel anguleux. Un implant possédant une telle couche superficielle externe texturée est supposé aider à empêcher une contraction capsulaire, à prévenir la formation de cicatrice, et à ancrer l'implant à l'intérieur du corps.

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