Artificial trachea and production process thereof.

摘要

An artificial trachea of the two-layered ring structure in which an outer layer of the ring structure is composed of a porous ceramic material and an inner layer integrally bonded to said outer layer is composed of a dense ceramic material, and a production process thereof. The artificial trachea is useful as a substitute for laryngotracheal cartilage, because it has a good mechanical strength enough to act as a connective tissue in place of the cartilage, does not cause infection and inflammation, shows an excellent fixability in the surrounding soft tissue, and can be retained in vivo for a long period without suffering from troubles.