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US 6,746,477 B2Granted
Expandable stent
AssigneeLPL Systems, Inc.
InventorBrian M Moore
Life of this patent
Estimating the term…
Abstract
An expandable stent has a porous tubular wall with a longitudinal axis. The porous tubular wall has a plurality of butterfly cells disposed in a direction orthogonal to the longitudinal axis of the tubular wall, each butterfly cell having two symmetrical wing portions, an abdomen portion, and an antenna portion. The abdomen portion and the antenna portion have different shapes. Preferably, each cell includes a plurality of curved portions and no straight portions. Also, the cells of one row of cells are preferably interlocked with the cells of an adjacent row of cells, each cell having at least six three-point connections. Preferably, each cell has substantially the same shape.
Claims43
An expandable stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall comprising a plurality of butterfly cells disposed in a direction orthogonal to the longitudinal axis of the tubular wall, each butterfly cell having two symmetrical wing portions, an abdomen portion, and an antenna portion, the abdomen portion and the antenna portion having different shapes, wherein each butterfly cell has at least six three-point connections.
An unexpanded stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall comprising at least four rows of identical cells interlocked with respect to each other in a direction substantially perpendicular to the tubular wall longitudinal axis, each cell comprising a plurality of curved portions and no straight portions, wherein each cell has at least six three-point connections.
A stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having a plurality of identical cells disposed in more than three adjacent rows arrayed in a direction substantially perpendicular to the porous tubular wall longitudinal axis, the cells of one row of cells being interlocked with the cells of an adjacent row of cells, each cell having at least six three-point connections, wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, the abdomen portion and the antenna portion having different shapes.
A stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having a plurality of identical cells disposed in more than three adjacent rows arrayed in a direction substantially perpendicular to the porous tubular wall longitudinal axis, the cells of one row of cells being interlocked with the cells of an adjacent row of cells, each cell having at least six three-point connections, wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, wherein the abdomen portion comprises two outwardly-extending curved sections.
An expandable stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having at least four rows of cells disposed in a direction substantially orthogonal to the porous tubular wall longitudinal axis, the cells of one row of cells interlocking with the cells of an adjacent row of cells, each cell having at least six outwardly-extending curved sections, each cell of said four rows of cells having the same shape, wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, the abdomen portion and the antenna portion having different shapes.
An expandable stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having at least four rows of cells disposed in a direction substantially orthogonal to the porous tubular wall longitudinal axis, the cells of one row of cells interlocking with the cells of an adjacent row of cells, each cell having at least six outwardly-extending curved sections, each cell of said four rows of cells having the same shape,
- wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, wherein the abdomen portion comprises two outwardly-extending curved sections.
1 more element
An expandable stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having at least two rows of cells disposed in a direction substantially perpendicular to the porous tubular wall longitudinal axis, the cells of one row of cells interlocking with the cells of an adjacent row of cells, each cell having at least four multi-curve portions, each of the at least four multi-curve portions including one inwardly-extending curved section and one outwardly-extending curved section, the inwardly-extending curved section and the outwardly-extending curved section having different shapes, at least one of the inwardly-extending curved section and the outwardly-extending curved section having a curve of at least 180 degrees, wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, the abdomen portion and the antenna portion having different shapes.
An expandable stent comprising:
- a porous tubular wall having a longitudinal axis;
- and
- the porous tubular wall having at least two rows of cells disposed in a direction substantially perpendicular to the porous tubular wall longitudinal axis, the cells of one row of cells interlocking with the cells of an adjacent row of cells, each cell having at least four multi-curve portions, each of the at least four multi-curve portions including one inwardly-extending curved section and one outwardly-extending curved section, the inwardly-extending curved section and the outwardly-extending curved section having different shapes, at least one of the inwardly-extending curved section and the outwardly-extending curved section having a curve of at least 180 degrees, wherein each cell has a butterfly shape including two wing portions, an abdomen portion, and an antenna portion, wherein the abdomen portion comprises two outwardly-extending curved sections.
Dependencies are inferred from the claim text.