Multi-stage expandable stent-graft
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United States of America Patent
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Jan 8, 2002
Grant Date -
Dec 20, 2001
app pub date -
Dec 9, 1998
filing date -
Dec 9, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
An improved device for use in a conduit, such as a blood vessel, is provided. The device uniquely combines desirable properties from two distinct previous devices. The device of the present invention assumes and is constrained to a first diametrical dimension for insertion into the conduit. Once inserted and properly positioned in the conduit the device expands to a second diametrical dimension within the conduit when the constraint is removed. The device can then be dilated to one or more enlarged third diametrical dimensions by using a balloon catheter or similar device. The result is a device that provides desirable properties of both self-expanding stents and balloon-expandable endoprostheses. The device can be employed in a variety of applications.
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