Radially expandable stent IV
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United States of America Patent
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Aug 26, 2003
Grant Date -
N/A
app pub date -
Jun 28, 1999
filing date -
Jul 3, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A radially expandable support structure is presented, for keeping open lumina within a body, in particular a blood vessel, having a tube-shaped structure that has at least two partial structures, with a wall surface that extends between a first and a second end, which has several cut out areas, in particular, slits, which are essentially oriented parallel to the longitudinal axis of the tube-shaped structure. At least one of the partial structures (11) extend without interruption in the axial direction generally from the first end to the second end of the tube-shaped structure. A first partial structure (1, 2) can be expanded at least in the radial direction and has at least one radial-expansion component. The individual radial expansion components (12, 13) are arranged as a helix or in a helix shape. A second partial structure (11) is generally almost rigid in the axial direction. The two partial structures (1, 2; 11) are arranged in such a way that during the radial expansion of the tube-shaped structure, the second partial structure (11) receives the longitudinal axial forces that arise.
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