Variable angle adaptive plate

摘要

A device for supporting and/or assisting in bone fusion, particularly in the spine, is described. A plate member is provided, along with two or more attachment members that are anchorable to bones. In one embodiment, the plate member has a slot near one end and an aperture at another end. The attachment members include threaded posts for connection to the plate member via the latter's slot(s) and aperture(s). Alternatively, attachment members need not have a threaded post, and attachment members may be connected to the plate member via a bone bolt or similar fixation member. The slot(s) allow a single plate member to be used for a variety of operative situations and anatomies. A device for repositioning bones and a method for using the disclosed devices is also described.

主权项

1. An apparatus, comprising:
a plate having a first end, a second end, an upper surface, an opposite lower surface, a perimeter, a first aperture extending through said plate proximate said first end, and a second aperture extending through said plate proximate said second end; an attachment member having a top surface, an opposite bottom surface and spaced apart first and second holes extending therethrough from said top surface to said bottom surface, said attachment member adapted for anchoring to a vertebra and to connect to said plate proximate one of said first and second apertures; and first and second screws each having a shaft and a head portion at one end of said shaft for anchoring said attachment member to bone, at least a portion of said head portion of said first screw being positioned in said first hole and at least a portion of said head portion of said second screw being positioned in said second hole; wherein at least a portion of said perimeter of said plate covers at least a portion of each of said head portions with said lower surface of said plate positioned in contact with said top surface of said attachment member and with said head portions at least partially positioned between said plate and said attachment member, and wherein said attachment member comprises a first prong extending from said bottom base positioned at a first corner of said attachment member and a second prong extending from said bottom base positioned at an opposite second corner of said attachment member, said first and second prongs each including a pointed distal fixation end.