Intervertebral fusion device
AssigneeNational Taiwan University
InventorWei-Hsing Tuan
Life of this patent
Estimating the term…
Abstract
An intervertebral fusion device includes a structural ceramic body. The structural ceramic body has a bottom surface, a top surface, a peripheral surface connected between the bottom surface and the top surface, and at least one pore channel penetrating the bottom surface and the top surface. The inner surface of the pore channel is either a convex curved surface or a funnel-shaped surface. For the pore channel having the convex curved surface, the pore diameter of the pore channel gradually expands from the center of the pore channel to the top surface and the bottom surface. The pore diameter can also gradually expand from the bottom surface to the top surface. The peripheral surface of the structural ceramic body is wavy or zigzag.
Claims11
An intervertebral fusion device, comprising:
- a structural ceramic body comprising a bottom surface, a top surface, a peripheral surface connected between the bottom surface and the top surface, and at least one pore channel penetrating the bottom surface and the top surface, wherein a number of the at least one pore channel is 3 or less, and a total opening area of the at least one pore channel on the top surface accounts for 20% or more of an area fraction of the top surface,
- wherein an inner surface of the pore channel is a convex curved surface, a plurality of corners of the peripheral surface to the top surface and to the bottom surface are round corners, and a plurality of corners of the inner surface of the pore channel to the top surface and to the bottom surface are also round corners,
- in the pore channel with the convex curved surface, a pore diameter of the pore channel gradually expands from a center of the pore channel to the bottom surface and the top surface, and
- the peripheral surface is wavy or zigzag.
Dependencies are inferred from the claim text.