发明名称 |
ePTFE graft with axial elongation properties |
摘要 |
A method of making an ePTFE tubular structure includes the steps of (a) forming a tube of polytetrafluoroethylene; (b) longitudinally stretching the polytetrafluoroethylene tube to form an expanded polytetrafluoroethylene tube, where the expanded polytetrafluoroethylene tube includes fibrils oriented in a longitudinal direction of the tube and nodes oriented in a circumferential direction of the tube; and (c) placing the expanded polytetrafluoroethylene tube circumferentially exterior to a longitudinal foreshortening and radially expanding mechanism, where radial pressure from the foreshortening mechanism radially expands the ePTFE tubular structure and reorients the fibrils non-longitudinally. |
申请公布号 |
US2004162604(A1) |
申请公布日期 |
2004.08.19 |
申请号 |
US20040776576 |
申请日期 |
2004.02.11 |
申请人 |
BOSTON SCIENTIFIC CORP./ SCIMED LIFE SYSTEMS, INC. |
发明人 |
SOWINSKI KRZYSZTOF;HENDERSON JAMIE;WOLEK HOWARD |
分类号 |
A61F2/06;A61L27/16;B29C55/22;(IPC1-7):A61F2/06 |
主分类号 |
A61F2/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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