Patent ID: 7052518

Claim:
An artificial bone comprising a calcium phosphate-based ceramic porous body having a plurality of spherical or amoeba-like pores which are three-dimensionally distributed throughout an entire region of the porous body, are interconnected with each other, and each has a diameter ranging from 0.01 μm to 2000 μm, the porous body having a porous structure in which a total volume “A” of pores which are interconnected with each other through an interconnecting portion having a diameter of 100 μm or more from a core portion to outer surface portion of the porous body is accounted for 5% or more based on an entire volume of the porous body and the total volume “A” is accounted for 25% or more based on a total volume of the pores having a pore diameter of 10 μm or more in the porous body, or a porous structure in which a total volume of the pores interconnected with each other through an interconnecting portion having a diameter of “B” μm or more from a core portion to outer surface portion of the porous body among the pores interconnected with each other through an interconnecting portion having a diameter of 5 μm or more is defined as “C”, and a maximum value of differential dC/dB is derived under a condition of: B>100 μm.