Patent ID: 6060640
Filing Date: 2000-05-09
Classification: A61F,A61K,A61L

Abstract:
A permeable structure forming a chamber to hold living cells, the permeable structure comprising a first permeable region surrounding at least a portion of the chamber having a conformation that, when implanted in host tissue, substantially blocks penetration of host cells into the chamber while permitting solute transport between the host and cells, a second permeable region overlying the first permeable region having a conformation that, when implanted in host tissue, forms a permeable interface with host tissue that permits solute transport between the host and cells, and a third permeable region between the first and second permeable regions comprising polymer material layer formed in place between the first and second permeable regions, the third permeable region bonding the first and second permeable regions together and having a conformation that, when implanted in host tissue, permits solute transport between the first and second permeable regions.