Supported lattice for cell cultivation
First Claim
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1. A supported lattice for cultivating living cells to form living tissue, said supported lattice comprising:
- a first support substrate comprising a first elongated tube formed of a plurality of first resilient filamentary members interlaced together, said first resilient filamentary members being interlaced to form a first mesh defined by interstices that are large compared with said living cells such that said cells do not bridge said interstices;
a first cell cultivation lattice comprising a plurality of first flexible filamentary members interlaced with one another and said first resilient filamentary members, said first flexible filamentary members being interlaced to form a second mesh defined by interstices smaller than the interstices formed by the first resilient filamentary members and adapted for growing cells in a two-dimensional array across said large interstices of said first support substrate to form a first substantially continuous surface comprising said living tissues;
said supported lattice further comprising a second elongated tube positioned coaxially within said first elongated tube, said second elongated tube comprising;
a second support substrate comprising a plurality of second resilient filamentary members interlaced together, said second resilient filamentary members being interlaced to form a third mesh defined by interstices that are large compared with said living cells such that said cells do not bridge said interstices; and
a second cell cultivation lattice comprising a plurality of second flexible filamentary members interlaced with one another and said second resilient filamentary members, said second flexible filamentary members being interlaced to form a fourth mesh defined by interstices smaller than the interstices formed by the second resilient filamentary members and adapted for growing cells in a two-dimensional array across said large interstices of said second support substrate to form a second substantially continuous surface comprising said living tissue.
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Abstract
A supported lattice is disclosed having a support substrate formed of a plurality of resilient filamentary members braided together to yield a coarse mesh having relatively large interstices and a cell cultivation lattice formed of a plurality of flexible filamentary members braided together and with the resilient filamentary members to form a fine mesh having small interstices. The cell cultivation lattice provides a bed adapted for growing cells in a two-dimensional array across the large interstices of the support substrate to form a continuous surface of living tissue useful to form a graft.
48 Citations
16 Claims
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1. A supported lattice for cultivating living cells to form living tissue, said supported lattice comprising:
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a first support substrate comprising a first elongated tube formed of a plurality of first resilient filamentary members interlaced together, said first resilient filamentary members being interlaced to form a first mesh defined by interstices that are large compared with said living cells such that said cells do not bridge said interstices; a first cell cultivation lattice comprising a plurality of first flexible filamentary members interlaced with one another and said first resilient filamentary members, said first flexible filamentary members being interlaced to form a second mesh defined by interstices smaller than the interstices formed by the first resilient filamentary members and adapted for growing cells in a two-dimensional array across said large interstices of said first support substrate to form a first substantially continuous surface comprising said living tissues; said supported lattice further comprising a second elongated tube positioned coaxially within said first elongated tube, said second elongated tube comprising; a second support substrate comprising a plurality of second resilient filamentary members interlaced together, said second resilient filamentary members being interlaced to form a third mesh defined by interstices that are large compared with said living cells such that said cells do not bridge said interstices; and a second cell cultivation lattice comprising a plurality of second flexible filamentary members interlaced with one another and said second resilient filamentary members, said second flexible filamentary members being interlaced to form a fourth mesh defined by interstices smaller than the interstices formed by the second resilient filamentary members and adapted for growing cells in a two-dimensional array across said large interstices of said second support substrate to form a second substantially continuous surface comprising said living tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16)
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8. A supported lattice according to claim 8, wherein said multi-filament yarns are selected from the group consisting of polyester, polytetrafluoroethylene, polypropylene and polyethylene.
Specification