Fixation of elastomer to rigid structures

Details Fixation of elastomer to rigid structures Fixation of elastomer to rigid structures

A - Human Necessities

61

F

A61F 2/42 (2006.01) A61F 2/08 (2006.01) A61F 2/44 (2006.01)

Patent

CA 2595258

A surgical implant, especially an artificial intervertebral disc, includes a rigid substrate (513) having a porous attachment structure (512) that covers a portion of the substrate and an elastomeric body (510) that is fastened to the substrate by impregnating the porous attachment structure. The porous attachment structure has a net porosity greater than 21.5%. The porous attachment structure may be, for example, a perforated plate or a screen spaced from a substrate surface, or a layer of trabecular metal or an open- cellular material.

Un implant chirurgical, particulièrement un disque intervertébral artificiel, comprend un substrat rigide (513) recouvert en partie d'une structure de fixation poreuse (512) et auquel est assujetti un corps élastomère (510) par imprégnation de la structure de fixation poreuse. La structure de fixation poreuse présente une porosité nette supérieure à 21,5 %. La structure de fixation poreuse peut être, par exemple, une plaque perforée ou un tamis monté à l'écart de la surface du substrat, ou une couche de métal trabéculaire ou un matériau alvéolaire.

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