Intravascular stent
AssigneeMedtronic, Inc.
InventorDominik M. Wiktor
Life of this patent
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Abstract
A stent for implantation into a body vessel in which a cylindrical stent body coiled from a generally continuous wire with a deformable zig-zag structure is provided with means for preventing the stent body from stretching along its longitudinal axis. This stent is especially useful when implanting very long stents by means of balloon expansion.
Claims12
A stent for implantation within a body vessel comprising:
- a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon;
- and means for preventing the stent body from stretching along its longitudinal axis.
A stent for implantation within a body vessel comprising:
- a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and the zig-zag is in the form of a sinusoidal wave, whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon;
- and
- means for preventing the stent body from stretching along its longitudinal axis.
The stent of claim 14 wherein the attachment between successive windings comprises a wire positioned substantially longitudinally along the stent body and attached to successive windings of the wire.
A method for making a stent body for implantation within a body vessel comprising;
- preforming a wire into a zig-zag pattern;
- winding the preformed wire on a cylindrical mandrel such that the zig-zag pattern is retained;
- and attaching adjacent windings together.
Dependencies are inferred from the claim text.