Process for producing calcium phosphate-based particles
AssigneeKuraray Co., Ltd.
InventorsTakashi Matsuo, Takashi Makabe
Life of this patent
Estimating the term…
Abstract
A method for making calcium phosphate particles, the method including compressively pulverizing a molded body containing, as a principal component, a calcium phosphate material with a plurality of parallel extending needlelike projections. The molded body contains a plurality of void holes oriented in one direction and the pulverizing is carried out by moving the needlelike projections in a direction of protrusion, which is aligned with the one direction. Each needlelike projection has a diameter within a range of 1.0 to 2.0 mm and a number the needlelike projections per unitary surface area is within a range of 5 to 35 per cm2.
Claims20
A method of making calcium phosphate particles, the method comprising:
- compressively pulverizing a molded body comprising, as a principal component, a calcium phosphate material with a plurality of needlelike projections which protrude in a parallel fashion to each other.
A compressive pulverizing machine, comprising:
- a lower press die which holds a molded body;
- a plate which prevents clogging arranged above the lower press die;
- an upper press die arranged above the plate and provided with a plurality of downwardly oriented needlelike projections juxtaposed in a horizontal direction;
- and
- a drive unit which drives the upper press die or the lower press die toward the other to allow the needlelike projections to pass through the plate, the molded body, and the lower press die.
Dependencies are inferred from the claim text.