Longitudinally flexible stent
AssigneeMedinol Ltd.
InventorsGregory Pinchasik, Jacob Richter
Life of this patent
Estimating the term…
Abstract
An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. The stent can be adapted to prevent flaring of portions of the stent during insertion.
Claims94
A stent for holding open a blood vessel formed of a plurality of triangular cells, each triangular cell comprising:
- a first loop containing section, the first loop containing section arranged generally in the circumferential direction;
- a second loop containing section joined to the first loop containing section at a first junction point;
- and
- a third loop containing section joined to the first loop containing section at a second junction point and joined to the second loop containing section at a third junction point.
A stent for widening a vessel in the human body comprising:
- a plurality of first meander patterns;
- a plurality of second meander patterns intertwined with the first meander patterns to form triangular cells.
A multicellular stent for holding open a lumen, comprising:
- a plurality of even and odd vertical meander patterns, the odd vertical meander patterns being located between every two even vertical meander patterns and being out of phase with the even vertical meander patterns,
- a plurality of even and odd horizontal meander patterns, the odd horizontal meander patterns being located between every two even horizontal meander patterns,
- wherein the vertical meander patterns are intertwined with the horizontal meander patterns to form a plurality of triangular cells.
A multicellular stent comprising;
- a plurality of bands of first cells, each first cell including a first loop disposed generally longitudinally opposite a second loop and a first pair of flexible compensating members joined to the cell sections containing the first and second loop;
- a plurality of bands of second cells, each second cell including a third loop disposed generally longitudinally opposite a fourth loop and a second pair of flexible members joined to the cell sections containing the third and fourth loops to form a cell, the bands of second cells interspersed with the bands of first cells,
- wherein the first loop and the second loop are substantially aligned along a longitudinal axis of the stent, and wherein the third loop and the fourth loop are offset along the longitudinal axis.
A multicellular stent comprising:
- a plurality of bands of square cells, each square cell including a first loop disposed generally longitudinally opposite a second loop, and a first pair of flexible compensating members joined to the legs of the first and second loop;
- a plurality of bands of triangular cells, each triangular cell comprising a first loop containing section arranged generally in the circumferential direction, a second loop containing section connected to the first loop containing section, and a third loop containing section connected to the first loop containing section and the second loop containing section,
- wherein the bands of triangular cells are interspersed with the bands of square cells to form the stent.
An expandable stent comprising a plurality of enclosed flexible spaces, each of the plurality of enclosed flexible spaces including:
- a) a first member having a first end and a second end;
- b) a second member having a first end and a second end;
- c) a third member having a first end and a second end;
- d) a fourth member having a first end and a second end;
- the first end of the first member communicating with the first end of the second member, the second end of the second member communicating with the second end of the third member, and the first end of the third member communicating with the first end of the fourth member;
- e) the first member and the second member with the curved portion at their ends forming a first loop;
- f) the third member and the fourth member with the curved portion at their ends forming a second loop;
- g) a fifth member having a first end and a second end;
- h) a sixth member having a first end and a second end;
- i) a seventh member having a first end and a second end;
- j) an eighth member having a first end and a second end;
- k) a ninth member having a first end and a second end;
- and
- l) a tenth member having a first end and a second end, the first end of the fifth member communicating with the second end of the first member, the second end of the fifth member communicating with the second end of the sixth member, the first end of the sixth member communicating with the first end of the seventh member, the second end of the seventh member communicating with the second end of the eighth member, the first end of the eighth member communicating with the first end of the ninth member, the second end of the ninth member communicating with the second end of the tenth member, and the first end of the of the tenth member communicating with the second end of the fourth member;
- m) the fifth member and the sixth member with the curved portion at their ends forming a third loop;
- n) the seventh member and the eighth member with the curved portion at their ends forming a fourth loop;
- and
- o) the ninth member and the tenth member with the curved portion at their ends forming a fifth loop.
A stent comprising a matrix of cells, substantially as depicted in any of FIGS. 3, 4, 5, 6, 7, 9 or 11.
A stent comprising a matrix of cells, wherein the cells are selected from one or more of the cells substantially as depicted in FIGS. 3, 4, 5, 6, 7, 9 or 11.
Dependencies are inferred from the claim text.