Patent ID: 11969521
Assignee: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC A  B  C  D | IPC A  B  C  D

Claim 0:
1. A bone-regeneration material comprising a biodegradable fiber produced by using an electrospinning process,
wherein the biodegradable fiber comprises 30 to 50 wt % of PLLGA resin and 70 to 50 wt % of β-TCP fine particles substantially uniformly dispersed in the PLLGA resin,
wherein the biodegradable fiber is produced by electrospinning a spinning solution that is produced by dissolving a composite of PLLGA resin and β-TCP fine particles by using a solvent and stirring the solution such that the β-TCP fine particles are dispersed substantially uniformly in the biodegradable fiber,
wherein the composite of PLLGA resin and β-TCP fine particles is produced by providing softened PLLGA resin of a working viscosity range s and β-TCP fine particles to a kneader in a weight ratio of 30-50:70-50, and kneading a mixture of the PLLGA resin and the β-TCP fine particles in the kneader by rotating a blade of the kneader so that thermal and mechanical energy is applied to the mixture, thereby aggregates of the β-TCP fine particles are physically crushed and the β-TCP fine particles are dispersed in the PLLGA resin, and
wherein the β-TCP fine particles that are substantially uniformly dispersed in the biodegradable fiber are not chemically bonded to the PLLGA resin, and surroundings of the β-TCP fine particles are covered by the PLLGA resin so that the β-TCP fine particles are not separated from the biodegradable fiber during a formation of the fiber.