Bifurcated stent
First Claim
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1. A stent comprising:
- a plurality of interconnected framework members defining a plurality of cells, a portion of the interconnected framework members comprising a side branch structure defining an inner side branch cell, the inner side branch cell being shaped differently than other cells of the stent;
the side branch structure comprising;
an inner serpentine ring extending around the inner side branch cell, the inner serpentine ring comprising alternating struts and turns, the turns comprising alternating inner turns and outer turns, the inner turns comprising alternating first inner turns and second inner turns;
an outer serpentine ring, the outer serpentine ring comprising alternating struts and turns, the outer serpentine ring having more struts and more turns than the inner serpentine ring; and
a plurality of connectors each connector connecting between a first inner turn of the inner serpentine ring and an inner turn of the outer serpentine ring;
wherein the second inner turns are located farther away from a side branch center point than the first inner turns, and the struts of the inner serpentine ring that are located on either side of a connector are parallel to the connector.
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Abstract
In at least one embodiment, a stent comprises a plurality of interconnected framework members defining a plurality of cells. A portion of the interconnected framework members comprise a side branch structure defining an inner side branch cell that is shaped differently from other cells of the stent. The side branch structure comprises a serpentine ring that extends around the inner side branch cell. The serpentine ring comprises alternating struts and turns. The turns comprise alternating inner turns and outer turns, and the inner turns comprise alternating first inner turns and second inner turns. The second inner turns are located farther away from a side branch center point than the first inner turns.
214 Citations
17 Claims
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1. A stent comprising:
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a plurality of interconnected framework members defining a plurality of cells, a portion of the interconnected framework members comprising a side branch structure defining an inner side branch cell, the inner side branch cell being shaped differently than other cells of the stent; the side branch structure comprising; an inner serpentine ring extending around the inner side branch cell, the inner serpentine ring comprising alternating struts and turns, the turns comprising alternating inner turns and outer turns, the inner turns comprising alternating first inner turns and second inner turns; an outer serpentine ring, the outer serpentine ring comprising alternating struts and turns, the outer serpentine ring having more struts and more turns than the inner serpentine ring; and a plurality of connectors each connector connecting between a first inner turn of the inner serpentine ring and an inner turn of the outer serpentine ring; wherein the second inner turns are located farther away from a side branch center point than the first inner turns, and the struts of the inner serpentine ring that are located on either side of a connector are parallel to the connector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent comprising:
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a plurality of interconnected framework members defining a plurality of cells, a portion of the interconnected framework members comprising a side branch structure defining an inner side branch cell, the inner side branch cell being shaped differently than other cells of the stent; the side branch structure comprising a serpentine ring extending around the inner side branch cell and a plurality of connectors, the serpentine ring comprising alternating struts and turns, the turns comprising inner turns and outer turns, the struts comprising longer struts and shorter struts, each connector attached at one end to an inner turn, the serpentine ring comprising a repeating pattern of two adjacent longer struts and two adjacent shorter struts. - View Dependent Claims (13, 14, 15, 16)
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17. A stent comprising:
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a plurality of interconnected framework members defining a plurality of cells, a portion of the interconnected framework members comprising a side branch structure defining an inner side branch cell, the inner side branch cell being shaped differently than other cells of the stent; the side branch structure comprising a serpentine ring extending around the inner side branch cell and a plurality of connectors, the serpentine ring comprising alternating struts and turns, said turns comprising alternating inner turns and outer turns, each connector connected at one end to an inner turn and connected at the other end to another part of the stent; wherein the struts of the serpentine ring located beside each of said connectors are parallel to the connector.
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Specification