lightweight tissue expansion material and injectable lightweight tissue expansion composition

摘要

LIGHT FABRIC EXPANSION MATERIAL AND INJECTABLE LIGHT FABRIC EXPANSION COMPOSITION. A lightweight tissue expansion material includes a plurality of particles. Each particle comprises a rounded polymeric shell defining an inner cavity and having a maximum outer dimension of 50 syn 250 syn. A door or opening being provided in the housing. The door or opening thus providing access to the cavity. The door or aperture having a size or dimension ranging from one tenth of the outer particle dimension to the outer particle dimension.