Tissue engineered biografts for repair of damaged myocardium

Drug – bio-affecting and body treating compositions – Whole live micro-organism – cell – or virus containing – Animal or plant cell

Reexamination Certificate

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C424S093100, C424S489000, C424S484000, C424S488000, C435S325000, C435S366000

Reexamination Certificate

active

09654276

ABSTRACT:
The invention is directed to tissue-engineered biografts, methods for preparing the biografts of the invention, and methods for repairing a damaged myocardium in a mammal. The methods of the invention can include providing a three-dimensional porous polysaccharide matrix; introducing mammalian cells into said matrix; growing said cells in said matrix in vitro, until a tissue-engineered biograft is formed; and transplanting the tissue-engineered biograft onto myocardial tissue or myocardial scar tissue of said mammal. The tissue-engineered biograft of the invention can form a contracting tissue. The methods of the invention can optionally include removing scar tissue or dead tissue from the site of implantation prior to transplanting the biograft.

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