Patent ID: 8021869
Filing Date: 2011-09-20
Classification: A61F,A61K,C12N,G06Q

Abstract:
1. A method for storage of living cells for delivery into a mammal, said method comprising: (a) providing a cell delivery system comprising: (i) viable cells; and (ii) a biodegradable and/or bioabsorbable fibrous matrix physically associated with said cells to contain and release said cells at a controlled rate, wherein said biodegradable and/or bioabsorbable fibrous matrix contains at least about 20 weight percent of fibers having fiber diameters in the range of about 10 up to about 1000 nanometers of a biodegradable and/or bioabsorbable fiberizable material; (b) cooling said cell delivery system down to a preservation temperature under conditions which maintain the integrity of said system; and (c) maintaining said cell delivery system at or below said preservation temperature until a time when delivery is desired.