Cervical and lumbar total artificial discs are entering the disc replacement clinical neurosurgical and orthopedic markets. The benefits lumbar of these artificial discs are well known. They replace diseased discs , and preserve motion segment mobility .
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ABSTRACT
A total artificial expansile disc and a method for posterior insertion between a pair of vertebral endplates are disclosed. The total artificial expansile disc includes at least one pair of substantially parallel plates that move apart along a first axis , in order to occupy a space defined by the vertebral endplates. In another embodiment , each of substantially parallel plates includes a first plate and a second sliding plate . An expansion device or tool is used to move the substantially parallel pair of plates apart along the first axis . A core is disposed between the pair of plates , and the core permits the vertebral endplates to move relative to one another . A ball limiter or ball extender prevents the core from being extruded from between the substantially parallel plates.
ARTIFICIAL DISC SYSTEM
Inventors : Nathan C. Moskowitz, Rockville, MD ( US ) ; Mosheh T. Moskowitz , Rockville , MD ( US ) ; Daniel Glozman , Kefar Adumin ( IL )
Filed : Feb. 25 , 2022