Method for manufacturing biomedical porous article
View Patent ↗The present invention provides a method for manufacturing a biomedical porous article wherein communicability between the pores in the porous article is ensured and a desired porosity can be easily obtained, the method comprising a plate-like thread cluster formation step in which a plate-like thread cluster is obtained by dispersing many metallic threads made of a biomedical metallic material along a flat surface and entangling them; a compressing step of compressing the plate-like thread cluster into a desired thickness; and a sintering step of sintering the plate-like thread cluster.
1. A method for manufacturing a biomedical porous article comprising:
a plate-like thread cluster formation step in which a plate-like thread cluster is obtained by dispersing along a flat surface and entangling many metallic threads made of a biomedical metallic material;
a compressing step of compressing the plate-like thread cluster into a desired thickness; and
a sintering step of sintering the plate-like thread cluster;
wherein the compressing step is conducted in such a manner that a plurality of plate-like thread clusters are laminated and then compressed so as to have a desired total thickness.
2. The method for manufacturing a biomedical porous article according to claim 1 , wherein the plurality of plate-like thread clusters include at least two types of plate-like thread clusters of different volume fractions.
3. The method for manufacturing a biomedical porous article according to claim 1 , wherein the compressing step and the sintering step are conducted simultaneously in a same step.
4. A method for manufacturing a biomedical porous article comprising:
a plate-like thread cluster formation step in which a plate-like thread cluster is obtained by dispersing along a flat surface and entangling many metallic threads made of a biomedical metallic material;
a winding step of winding the plate-like thread cluster into a roll; and
a sintering step of sintering the wound plate-like thread cluster.
5. A method for manufacturing a biomedical porous article according to claim 1 , wherein the metallic thread is formed from a Co—Cr—Mo alloy composed of 26-31 mass % of Cr, 8-16 mass % of Mo, with the balance being Co and impurities, and wherein the metallic thread is obtained from a metallic wire having a diameter of 20-200 μm.
6. A method for manufacturing a biomedical porous article according to claim 4 , wherein the metallic thread is formed from a Co—Cr—Mo alloy composed of 26-31 mass % of Cr, 8-16 mass % of Mo, with the balance being Co and impurities, and wherein the metallic thread is obtained from a metallic wire having a diameter of 20-200 μm.
7. The method for manufacturing a biomedical porous article according to claim 1 , wherein the metallic thread has a length of 1-1000 cm.
8. The method for manufacturing a biomedical porous article according to claim 4 , wherein the metallic thread has a length of 1-1000 cm.