A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/80 (2006.01) A61B 19/02 (2006.01)
Patent
CA 2656872
A bone plate (10) is described which is adapted for use in situ to fix a spatial relationship of at least two bone parts (80). The bone plate (10) has at least one pair of the bone screw apertures that are adjoined by a relief-space contiguous with the open space of the screw apertures themselves. An adjoined aperture pair forms a complex aperture and has a center-to- center distanced of the apertures along an axis running through the centers of the apertures. The center-to-center distance d is equal to or greater than the sum of the radii (r1 + r2) of the heads of the individual bone screw used with the aperture pair. At least one of the screw apertures (24) has a screw head seat (34) having at least one relief notch (84) set into a surface of the screw head seat (34). The relief notch 84 provides desirable advantages that are not similarly accomplished in their absence, such as a clearance passage for a tensioning wire 88 or a receiver for a self-locking insert 92.
L'invention concerne une plaque vissée (10) flexible conçue pour être utilisée in situ afin de fixer la relation spatiale entre au moins deux parties d'os (80). Cette plaque vissée (10) comprend au moins deux ouvertures pour vis, jointes par un espace de dégagement contigu à l'espace libre des ouvertures pour vis proprement dites. Deux ouvertures adjacentes forment une ouverture composite, les centres des ouvertures étant séparés par une distance d le long d'un axe passant par les centres des ouvertures. La distance d entre les centres est égale ou supérieure à la somme des rayons (r1 + r2) des têtes des vis d'os individuelles utilisées avec les deux ouvertures adjacentes. Au moins une des ouvertures (24) à vis comprend un support (34) de tête de vis doté d'au moins une encoche (84) de dégagement formée dans une surface du support (34) de tête de vis. L'encoche (84) de dégagement offre des avantages souhaitables, non réalisables en son absence, tels qu'un espace de passage pour un câble tendeur (88), ou un logement pour un élément auto-bloquant (92).
Forbes Steve
Thau Gary
White Patrick
Perry + Currier
Precimed S.a.
LandOfFree
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