Instrumentation and methods for reducing spinal deformities

Details Instrumentation and methods for reducing spinal deformities Instrumentation and methods for reducing spinal deformities

A - Human Necessities

61

B

A61B 17/88 (2006.01)

Patent

CA 2600721

Instrumentation and methods for reduction of a spinal deformity, including a plurality of elongate alignment elements (20) and first and second reduction elements (22, 24) engaged to the alignment elements (20). Each of the alignment elements (20) extends generally along a longitudinal axis (L) and includes a proximal portion (20a) adapted for coupling to a corresponding vertebra (V) and a distal portion (20b). The first reduction element (22) extends along a first transverse axis (T1) and is engaged with the distal portions (20b) of the alignment elements (20) to maintain the distal portions (20b) in general alignment along the first transverse axis (T1). The second reduction element (24) extends along a second transverse axis (T2) and is movably engaged with the alignment elements (20) wherein the proximal portions (20a) are positioned in general alignment along the second transverse axis (T2) as the second reduction element (24) is displaced in a proximal direction to thereby reduce the spinal deformity.

Cette invention concerne des méthodes et des dispositifs permettant de réduire une malformation de la colonne vertébrale, comprenant une pluralité d'éléments d'alignement de forme allongée (20) ainsi que des premiers et seconds éléments de réduction (22, 24) raccordés aux éléments d'alignement (20). Chacun des éléments d'alignement (20) est orienté généralement selon un axe longitudinal (L) et comprend une partie proximale (20a) conçue pour se raccorder à une vertèbre correspondante (V) et une partie distale (20b). Le premier élément de réduction (22) est orienté selon un premier axe transversal (T1) et est relié aux parties distales (20b) des éléments (20), qu'il maintient généralement alignées sur le premier axe transversal (T1). Le second élément de réduction (24) est orienté selon un second axe transversal (T2) et est engagé mobile dans les éléments d'alignement (20), les parties proximale (20a) étant généralement alignées sur le second axe transversal (T2) lorsque le second élément de réduction (24) est déplacé dans une direction proximale afin de réduire la malformation spinale.

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