Self-expanding stent
AssigneeBoston Scientific Scimed, Inc.
InventorKlaus Schmitt
Life of this patent
Estimating the term…
Abstract
In an inventive stent (10), helical filaments (12, 13) are disposed on a first tubular layer (11). The helical filaments (12, 13) are mutually phase-shifted such that they do not touch and lie in one plane. The helical filaments (12, 13) are completely coated by a second elastic tubular polymer layer (14) which is connected to the first elastic tubular layer (11). Further helical filaments may be disposed on the second elastic tubular layer (14). The inventive stent can be lengthened for introduction into a hollow organ and is self-expanding.
Claims15
1-9. (canceled)
Self-expanding stent for splinting and/or keeping open a hollow organ, the stent comprising:
- a first elastic tubular layer;
- several first nonintersecting helical filaments disposed in a phase-shifted fashion and a spaced apart relationship in one plane on the first elastic tubular layer;
- a second elastic tubular layer coating the several first helical filaments, the second elastic tubular layer being connected at least at ends thereof with the first elastic tubular layer in a material-bonding fashion for fixing the a position of the first helical filaments;
- at least one second helical filament disposed on the first helical filament outside of a plane spanned by the first helical filament;
- and
- a third elastic tubular layer coating the at least one second helical filament, the third elastic tubular layer comprising a polymer connected to the second elastic tubular layer.
Dependencies are inferred from the claim text.