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Abstract

An implantable tissue grafting medical system and material using a combination of bio-absorbable and non bio-absorbable fibers and materials such as Poly Glycolic Acid (PGA) and polyester (PET), provides a permeable mesh or weave of fibers with an initial interstice size and permeability factor suitable to initial implant requirements, and a pre-engineered bio-absorption pattern and rate that controls the gradual expansion of interstice size within the mesh or weave in one or two dimensions up to a pre-engineered maximum interstice size, consistent with the anticipated rate of tissue regeneration on the implant, while retaining a primary grid or circumferential pattern of non-absorbable fibers at the maximum interstice size for supporting the new tissue for an extended period. Various means for combining materials to obtain initial interstice size, pattern and permeability, with the desired absorption pattern and rate, and the desired end point interstice size and spacing, are also disclosed.

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First Claim