Expandable bone device

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/72 (2006.01)

Patent

CA 2563246

An expandable bone device including a unitary body extending along a longitudinal axis and including a deformable distal end portion having a collapsed orientation for placement adjacent a spinal structure, the deformable distal end portion including relatively wide, mutually contiguous support surfaces outlined by relatively narrow cutouts, the support surfaces being contiguous with the rest of the unitary body via relatively narrow deformable splines, the deformable distal end portion having an expanded orientation wherein the support surfaces are moved transversely outwards away from and generally parallel to the longitudinal axis, and an actuator coupled to the deformable distal end portion and operative to cause movement of the deformable distal end portion between the collapsed orientation and the expanded orientation.

La présente invention concerne un dispositif osseux extensible qui comprend un corps unitaire s'étendant le long d'un axe longitudinal et comportant une partie terminale distale déformable qui présente une orientation collabée afin d'être placée adjacente à une structure rachidienne, la partie terminale distale déformable présentant des surfaces de support mutuellement contiguës relativement larges bordées par des découpes relativement étroites, les surfaces de support étant contiguës au reste du corps unitaire par le biais de cannelures déformables relativement étroites, la partie terminale distale déformable présentant une orientation étirée dans laquelle les surfaces de support sont déplacées transversalement vers l'extérieur loin de l'axe longitudinal et globalement parallèlement à ce dernier et un organe d'actionnement couplé à la partie terminale distale déformable, qui sert à provoquer le déplacement de la partie terminale distale déformable entre l'orientation collabée et l'orientation étirée.

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