Coil Bioabsorbable Bifurcation Stent
AssigneeDuNing Incorporated
InventorSHIH-HORNG SU
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Abstract
A bioabsorbable, expandable coil bifurcation stent having a first, second, and third segment, in which the second and third segments are extensions of a coiled fiber in the first segment. Also disclosed is a three-segment expandable coil bifurcation stent in which the second and third segments extend from supporting fibers in the first segment. Further disclosed is an expandable bifurcation stent in which supporting fibers in the first segment also support the second and third segments. The three segments are independently adjustable to fit varied geometries.
Claims20
A bioabsorbable stent convertible between a furled state and an expanded state, comprising:
- a first segment containing a first fiber and a second fiber forming a two-ply coiled fiber that defines a first coil structure, and first longitudinally disposed supporting fibers spaced around the first coil structure and attached at selected points along the length of the first coil structure;
- a second segment containing a portion of the first fiber that defines a second coil structure, and second longitudinally disposed supporting fibers spaced around the second coil structure and attached at selected points along the length of the second coil structure;
- and
- a third segment containing a portion of the second fiber that defines a third coil structure, and third longitudinally disposed supporting fibers spaced around the third coil structure and attached at selected points along the length of the third coil structure, wherein all of the coiled fibers and supporting fibers contain bioabsorbable polymeric material.
A bioabsorbable stent convertible between a furled state and an expanded state, comprising:
- a first segment containing a coiled fiber that defines a first coil structure, and a first longitudinally disposed supporting fiber and a second longitudinally disposed supporting fiber each spaced around the first coil structure and attached at selected points along the length of the first coil structure;
- a second segment containing a portion of the first longitudinally disposed supporting fiber that defines a second coil structure, and second segment longitudinally disposed supporting fibers spaced around the second coil structure and attached at selected points along the length of the second coil structure;
- and
- a third segment containing a portion of the second longitudinally disposed supporting fiber that defines a third coil structure, and third longitudinally disposed supporting fibers spaced around the third coil structure and attached at selected points along the length of the third coil structure, wherein all of the coiled fibers and supporting fibers contain bioabsorbable polymeric material.
A bioabsorbable stent convertible between a furled state and an expanded state, comprising;
- a first segment containing a coiled fiber extending along the full length of the first segment and defining a first coil structure, and a first longitudinally disposed supporting fiber and a second longitudinally disposed supporting fiber each spaced around the first coil structure and attached at selected points along the length of the first coil structure;
- a second segment containing a second coiled fiber extending along the full length of the second segment and defining a second coil structure, and a portion of the first longitudinally disposed supporting fiber attached at selected points along the length of the second coil structure;
- and
- a third segment containing a third coiled fiber extending along the full length of the third segment and defining a third coil structure, and a portion of the second longitudinally disposed supporting fiber attached at selected points along the length of the third coil structure, wherein all of the coiled fibers and supporting fibers contain bioabsorbable polymeric material.
Dependencies are inferred from the claim text.