Intervertebral cage and implanting apparatus and operating method thereof

摘要

An intervertebral cage, an implanting apparatus and an operating method thereof are provided. The intervertebral cage for being implanted between two adjacent vertebral bodies includes a body and a connecting portion. The body has a lateral convex surface, an inclined surface, a lateral concave surface and a connecting surface connected sequentially. The connecting portion includes a main portion and a protrusion. The main portion connected to the connecting surface has a through hole. The protrusion is protruded from the main portion into the through hole to form first and second inner arc surfaces. The maximum width of the intervertebral cage is a distance between first and second lines. The first and second lines are substantially parallel to a tangent line of the lateral convex surface and the first line, respectively. The distance between the inclined surface and the first line decreases gradually along a direction away from the connecting portion.

主权项

1. An intervertebral cage used for being implanted into a location between two adjacent vertebral bodies, wherein the intervertebral cage comprises:
a body having a lateral convex surface, a lateral concave surface, an inclined surface, a connecting surface and a fillet located between the inclined surface and the lateral convex surface, wherein the lateral convex surface, the inclined surface, the lateral concave surface and the connecting surface are connected sequentially; and at least one connecting portion comprising a main portion and a first protrusion, wherein the main portion is connected to the connecting surface of the body and has at least one through hole, the first protrusion is protruded from the main portion into the through hole in a direction towards the connecting surface so as to form a first inner arc surface and a second inner arc surface and a first angle contained between the inclined surface and a line segment connecting the circle center of the fillet to the circle center of the first inner arc surface ranges 0˜89 degrees; wherein the maximum width of the intervertebral cage is a distance between a first line and a second line, the first line is substantially parallel to a tangent line of the lateral convex surface, the second line is substantially parallel to the first line, and the distance between the inclined surface and the first line decreases gradually along a direction away from the connecting portion.