Kyushu University

Gc Corporation

Kunio Ishikawa

Yuki Sugiura

Yasuharu Nakashima

Kanji Tsuru

Akira Tsuchiya

Katsushi Yamamoto

Masaharu Nakagawa

Shigeki Matsuya

Kouichi Udou

Noriko Tanaka

Maho Ishikawa

A method of producing a product inorganic compound including: immersing a raw material inorganic compound having a volume of 10mor more in an electrolyte aqueous solution or an electrolyte suspension; exchanging anions in the raw material inorganic compound with anions in the electrolyte aqueous solution or the electrolyte suspension; cations in the raw material inorganic compound are exchanged with cations in the electrolyte aqueous solution or the electrolyte suspension; or including a component (that excludes water, hydrogen, and oxygen) in the electrolyte aqueous solution or the electrolyte suspension not included in the raw material inorganic compound in the raw material inorganic compound; and obtaining a product inorganic compound having a volume of 10mor more from the raw material inorganic compound.

Method of producing product inorganic compound and product inorganic compound

A medical polymer material in which a phosphate group having a C&#x2014;O&#x2014;P chemical bond including elemental C in a main chain of a structural formula is present on a surface of a polymer material substantially free of phosphate and hydroxy groups except for ends in the structural formula.

Medical polymer material having excellent bone-bonding property

A medical use honeycomb structure having a plurality of through-holes extending in one direction, wherein an outer peripheral section of the medical use honeycomb structure has a through-hole groove formed by incomplete side walls of the through-hole, and a through-hole inlet adjacent to the through-hole groove.

Medical use honeycomb structure

To provide a method for producing a calcium carbonate block for medical use which is useful as a bone substitute or a bone substitute raw material needed in medical care, which is a method for producing a calcium carbonate block that satisfies the following desired properties: 1) the calcium carbonate block has excellent mechanical strength; 2) the calcium carbonate block can be produced by a simplified production method; 3) the calcium carbonate block contains no impurity; and 4) the calcium carbonate block has high reactivity. A method for producing a calcium carbonate block, comprising a step of shaping a water-containing calcium hydroxide block and a carbonation step of immersing the calcium hydroxide block in a carbonate ion-containing aqueous solution.

Method for producing calcium carbonate block

The present invention provides: a method for producing a shaped product comprising octacalcium phosphate and having a volume of 2.0 mmor more, comprising immersing a precursor ceramic composition containing at least one of Ca and POin composition, having a solubility in HO higher than that of octacalcium phosphate, and having a volume greater than 2.0 mm, in a solution containing a component which is not contained in the precursor ceramic composition, among the components Ca, POand HO, which are components of octacalcium phosphate to allow the precursor ceramic composition to react, thereby converting at least a part of the precursor ceramic composition into octacalcium phosphate; and the like.

Method for producing octacalcium phosphate shaped product

An object is to provide a method for manufacturing a calcium carbonate block of no less than 0.1 cm in diameter and thickness, not including any impurities, and able to be employed as a raw material of an artificial bone that requires biosafety: the method includes: (a) shaping a calcium hydroxide block; (b) being exposed to carbon dioxide; and (c) immersing in a carbonate ion containing solution.

Method for manufacturing calcium carbonate block

There is disclosed a bone substitute material for medical use which satisfies all the requirements of (1) no histotoxicity, (2) osteoconductivity, (3) bone replacement capability, and (4) mechanical strength necessary for a bone reconstruction operation. The bone substitute material for medical use is predominantly composed of carbonate apatite and produced through the formation of carbonate apatite by contacting a block of calcium compound with a phosphate-containing solution, wherein the calcium compound block contains substantially no powders, and at least one of said calcium compound block and said phosphate solution contains a carbonate group, without any sintering. The block of calcium compound is preferably one prepared using an artificially synthesized calcium compound, most preferably a foamed calcium compound.

Growing community of inventors

Fukuoka, Japan

Kunio Ishikawa