System and method for an expandable intervertebral implant

摘要

An expandable intervertebral implant includes a base body, a top endplate and a center component. The top endplate is configured to be placed onto an open top of the base body and to expand upward. The top endplate includes a plate, first and second side protrusions extending vertically downward from first and second sides of the plate, respectively, first and second protrusions including inclined surfaces and extending obliquely downward from a first end of the plate and third and fourth protrusions having a triangular shape with at least one inclined surface and extending downward from a second end of the plate. The center component is configured to be placed within the base body and to interface with the top endplate and to move longitudinally forward or backward within the base body, thereby causing the top endplate to expand upwards or move downward, respectively.

主权项

1. An expandable intervertebral implant comprising:
a base body comprising a front end and a back end, first and second side portions connecting the front end and the back end; a top endplate configured to be placed onto an open top of the base body and to expand upward, wherein said top endplate comprises a plate, first and second side protrusions extending vertically downward from first and second sides of the plate, respectively, first and second protrusions comprising inclined surfaces and extending obliquely downward from a first end of the plate and third and fourth protrusions comprising a triangular shape with at least one inclined surface and extending downward from a second end of the plate; a center component comprising first and second sides, and wherein each of said first and second sides of the center component comprises first and second protrusions comprising inclined surfaces and wherein the center component is configured to be placed within the base body and to interface with the top endplate and to move longitudinally forward or backward within the base body, thereby causing the top endplate to expand upwards or move downward, respectively; wherein said first and second side protrusions of the top endplate interdigitate with complementary first and second recesses formed on the first and second side portions of the base body, respectively; wherein the first and second protrusions of the top endplate interface with the first protrusions on each side of the center component, respectively; and wherein the third and fourth protrusions of the top endplate interface with the second protrusions on each side of the center component, respectively.