Mechanical stent and graft delivery system
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United States of America Patent
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-
Apr 17, 2001
Grant Date -
N/A
app pub date -
Aug 15, 1997
filing date -
Aug 16, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A deployment device for stents and grafts includes a catheter, an expansion framework or cage near the catheter distal end, and a means for controlling expansion from a proximal end of the catheter. The cage is formed of a plurality of elongate strands coupled at opposite ends to the catheter and to the control device. Axial movement of the control device relative to the catheter either elongates the strands to radially collapse the cage, or axially reduces the distance between the strand ends for radial enlargement. In one embodiment the control device is a stylet contained in a lumen of the catheter and extending beyond the catheter distal end. The strands are fixed at their opposite ends to the catheter distal end and the stylet distal end. In another embodiment, the strands are coupled to proximal and distal rings along the catheter, with one of the rings being axially movable by a wire to radially expand and reduce the cage.
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