Method for rapid adherence of endothelial cells onto a surface and surfaces prepared thereby
First Claim
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1. A method for endothelialization of a polymeric surface comprising contacting a polymeric surface with a plasma generated from a gaseous material comprising nitrogen whereby said polymeric surface is modified to contain surface amino groups, and applying to said modified surface sufficient endothelial cells to form a confluent layer of cells on said amino group-containing surface without a requirement for cell proliferation.
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Abstract
Small diameter plastic tubing is plasma-treated on the lumen wall and endothelial cells are adhered thereto to give antithrombogenic small diameter conduits useful for vascular grafts and other articles intended to come in contact with blood.
48 Citations
21 Claims
- 1. A method for endothelialization of a polymeric surface comprising contacting a polymeric surface with a plasma generated from a gaseous material comprising nitrogen whereby said polymeric surface is modified to contain surface amino groups, and applying to said modified surface sufficient endothelial cells to form a confluent layer of cells on said amino group-containing surface without a requirement for cell proliferation.
- 9. A method for applying cells to a surface comprising contacting a surface with a plasma generated from a gas whereby said surface is modified to contain reactive functional groups from said gas and applying to said modified surface sufficient cells to form a confluent layer of cells on said surface containing said functional groups without a requirement for cell proliferation.
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13. A method comprising treating the lumen wall of a polymeric conduit with a plasma generated from a gas, said plasma causing bonding of a reactive functional group from said gas onto said lumen wall;
- and sodding said lumen wall containing said reactive functional group with sufficient endothelial cells to form a confluent layer of cells adhered to said lumen wall without a requirement for cell proliferation.
- View Dependent Claims (14, 15)
- 16. An antithrombogenic article comprising a plasma-treated polymeric surface having amino groups bonded thereto and a confluent layer of endothelial cells adhered to said surface having amino groups.
- 19. An antithrombogenic article comprising a plasma-treated surface having reactive functional groups bonded thereto and a confluent layer of epithelial cells adhered to said surface containing reactive functional groups.
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21. A polymeric conduit having an inside diameter less than about 6 mm comprising a plasma-treated lumen wall, said wall having amino groups bonded thereto and a confluent layer of endothelial cells adhered to said lumen wall whereby said conduit is antithrombogenic.
Specification