US Patent 7323190 - Nanofiber matrix for stem cell delivery

http://www.freepatentsonline.com/7323190.html

This patent from the State University of New York discloses a system to deliver viable stem cells to treat defective tissue including a nanofiber matrix. Claim 1 reads:

1. A cell delivery system comprising a biodegradable and/or bioabsorbable fibrous matrix containing 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, and viable cells physically associated with said matrix as a carrier whereby said cells are contained and released at a controlled rate.