Back to results
US 5,954,744 AGranted
Intravascular stent
AssigneeQuanam Medical Corporation
InventorsLoc Phan, Simon Stertzer, Michael Froix
Life of this patent
Estimating the term…
Abstract
A stent designed to be carried on the balloon of a balloon catheter to a target site is described. The stent is formed of a series of expandable, strip-like segments, each formed of a memory polymer and adapted for movement between a closed, high-curvature condition and an expanded, low-curvature condition upon exposure to a selected stimulus.
Claims30
A stent designed to be carried on the balloon of a balloon catheter to a target site in a vessel, comprising
- a series of flexible, strip-like segments, each adapted for movement, in a substantially radial direction, between a closed, high-curvature condition and an expanded, low-curvature condition, upon exposure to a selected stimulus,
- said segments being so joined along offset side regions that they form initially a step-like strip which when helically wound about a longitudinal axis form a cylindrical sleeve, and upon exposure to said stimulus, the segments in the stent expand toward their low-curvature condition until such movement is constrained by the walls of such vessel.
A balloon-catheter apparatus for delivering a stent to a target site in a vessel, comprising
- a balloon catheter having at one end a balloon that can be filled with a liquid;
- a stent, formed of a series of flexible, strip-like segments, each adapted for movement, in a substantially radial direction, between a closed, high-curvature condition and an expanded, low-curvature condition, upon exposure to said liquid;
- said segments so joined along offset side regions that when coiled about a longitudinal axis form a cylindrical sleeve, and upon exposure to said liquid, the segments in the stent expand toward their low-curvature condition until such movement is constrained by the walls of such vessel.
Dependencies are inferred from the claim text.