Double sheath deployment system
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United States of America Patent
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Sep 20, 2005
Grant Date -
Feb 17, 2005
app pub date -
Aug 16, 2003
filing date -
Aug 16, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A stent-graft deployment system (10) includes a stent-graft (15), a flexible catheter tip (12) attached to a catheter shaft (25), a retractable primary sheath (20) containing the stent-graft in a first constrained small diameter configuration around the catheter shaft near the flexible tip. The stent-graft deployment system further includes a flexible secondary sheath (14) disposed within the retractable primary sheath and also containing the stent-graft, wherein when the primary sheath is removed from around the stent-graft, the flexible secondary sheath contains the stent-graft in a second constrained small diameter configuration around the catheter shaft near the flexible tip. The removal of the secondary sheath releases the stent-graft from a radial constraint so that stent-graft deployment may proceed.
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