Patent ID: 11883560
Assignee: NATIONAL TAIWAN UNIVERSITY
Field: nan (nan)
Classification: CPC nan | IPC A

Claim 0:
1. 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.