Patent ID: 9421110
Filing Date: 2016-08-23
CPC Classification: A61B,A61F

Claim Text:
1. An intervertebral medical device, the medical device comprising: a core member; a screw rotatably disposed within the core member; a first outer plate and a second outer plate, each of the first and second outer plates being coupled to at least a portion of the core member, wherein the first and second outer plates are composed of a shape memory material, the first and second outer plates being transitionable between a non-expanded, substantially tubular configuration and an expanded, substantially planar configuration, wherein each of the first and second outer plates defines an opening; a first center expansion arm hingedly connected to the core member that is pivotable towards the first outer plate; and a second center expansion arm hingedly connected to the core member that is pivotable towards the second outer plate; wherein the core member includes a first expansion body coupled to the first outer plate and a second expansion body coupled to the second outer plate, and a first wedge member and a second wedge member, the screw extending through at least a portion of the first and second wedge members; wherein rotation of the screw causes the core member to transition from a first configuration to a second configuration, during the transition the first and second wedge members moving closer to each other and the first and second expansion bodies moving away from each other; and wherein at least a portion of the first and second expansion arms extend through the opening of the first outer plate and the second outer plate, respectively, when the device is in the second configuration.