Patent ID: 9649406
Date: 2017-05-16
CPC Classifications: A61C,A61F,A61L,B28B

Claim:
1. A method for making a ceramic body prosthetic implant or prosthetic implant component of Mg-TTZ ceramic, which method comprises providing a bisqued initial green body of ceramic by providing a powdered ceramic material, which substantially is a monoclinic zirconia having magnesium oxide as a stabilizer, by, and, without employing a binder additional to the powdered ceramic material to do so: compressing the powdered ceramic material, which substantially is the monoclinic zirconia in its powder form through a cold isostatic press operation to form a raw, pressed initial green body, and then heating the raw, pressed initial green body to a bisque stage to provide the bisqued initial green body; and, after the foregoing steps are carried out without the employing a binder additional to the powdered ceramic material, carrying out the following further steps: without embedding the bisqued initial green body of ceramic in an embedding mass, machining the bisqued initial green body to provide a machined, bisqued green ceramic body such that the machined, bisqued green ceramic body has a shape, which is a precursor shape essentially analogous to, being of the same proportions as, the shape of, but larger than, the ceramic portion of a fired predetermined finished ceramic body prosthetic implant or prosthetic implant component; and then firing the machined, bisqued green ceramic body to provide a fired magnesium oxide stabilized transformation toughened zirconia (Mg-TTZ) ceramic body product, which is the same size and shape or essentially the same size and shape as the ceramic portion of the fired predetermined finished ceramic body prosthetic implant or prosthetic implant component; wherein a hot isostatic press operation is carried out.