Radially extended support member for spinal nucleus implants...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61F 2/46 (2006.01) A61L 27/14 (2006.01) A61L 27/40 (2006.01) A61L 27/52 (2006.01) A61L 27/54 (2006.01) B29C 70/26 (2006.01) B29C 70/72 (2006.01)

Patent

CA 2604893

A spinal nucleus implant is provided which includes an implant body and an interiorly embedded support member which extends out from the implant body. In one embodiment, the support member is fabric selected from the group consisting of mesh, woven fabric and nonwoven fabric. In one embodiment, the support member includes at least one portion which is located outside of the body, said portion adapted to engage one or more guides for orienting the implant. In one embodiment, the implant is capable of expanding from a compact, substantially dehydrated configuration to an expanded hydrated configuration. A method of manufacturing a spinal nucleus implant is provided which includes coagulating a liquid polymer such that at least a portion of said support member extends beyond the perimeter of the polymer to form a spinal nucleus implant having an interiorly disposed support member which extends out of the polymer. A method of implanting such a spinal nucleus implant is provided.

L'implant de noyau rachidien selon l'invention comprend un corps d'implant et un élément de support incorporé à l'intérieur qui s'étend hors du corps d'implant. Dans un mode de réalisation, l'élément de support est un tissu sélectionné dans le groupe comprenant un tissu tissé, un tissu maillé et un tissu non tissé. Dans un mode de réalisation, l'élément de support comprend au moins une partie qui est située à l'extérieur du corps, ladite partie étant adaptée pour entrer en contact avec un ou plusieurs guide(s) pour orienter l'implant. Selon un mode de réalisation, l'implant peut s'expanser et passer d'une configuration compacte sensiblement déshydratée à une configuration expansée hydratée. L'invention concerne aussi un procédé de fabrication d'un implant de noyau rachidien comprenant la coagulation d'un polymère liquide de telle sorte qu'au moins une partie dudit élément de support s'étende au-delà du périmètre du polymère pour former un implant de noyau rachidien comprenant un élément de support disposé à l'intérieur qui s'étend hors du polymère. L'invention concerne en outre un procédé pour implanter un implant de noyau rachidien de ce type.

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