STENT FOR VALVE REPLACEMENT
First Claim
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1. A stent (12A) comprising:
- a tubular lattice structure (13) having a radial direction and a longitudinal direction, the tubular lattice structure (13) comprising;
a middle zone (20) in communication with a distal end zone (21), the middle zone (20) and distal end zone (21) including a plurality of rods (16) positioned substantially in the longitudinal direction of the tubular lattice structure (13) and interconnected by a plurality of struts (17) that collectively define a plurality of six-sided polygons (18).
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Abstract
An expandable stent (12) for use in the implantation of a valve prosthesis (11) using a delivery system (10) is disclosed. The self-expandable stent (12) includes a tubular lattice structure (13) defined by longitudinally aligned rods (16) connected to V- shaped struts (17) for forming a plurality of interconnected chevron-shaped six-sided polygons (24) that define a distal end zone (21) and a middle zone (20) of the tubular lattice structure (13). A flare (27) or bend may be defined along opposite ends of each rod (16) to properly seat and prevent undue torsion of the stent (12) and valve prosthesis (11) during deployment and placement of the stent (12) within the lumen.
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Citations
25 Claims
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1. A stent (12A) comprising:
a tubular lattice structure (13) having a radial direction and a longitudinal direction, the tubular lattice structure (13) comprising; a middle zone (20) in communication with a distal end zone (21), the middle zone (20) and distal end zone (21) including a plurality of rods (16) positioned substantially in the longitudinal direction of the tubular lattice structure (13) and interconnected by a plurality of struts (17) that collectively define a plurality of six-sided polygons (18). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A delivery system (10) comprising:
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a hollow outer sheath (28) defining an opening (31); a stent (12A) disposed adjacent the opening (31) of the hollow catheter sheath (28) and in a collapsed form, the stent (12A) including a tubular lattice structure (13) having a radial direction and a longitudinal direction, the tubular lattice structure (13) comprising; a middle zone (20) in communication with a distal end zone (21), the middle zone (20) and distal end zone (21) including a plurality of rods (16) positioned substantially in the longitudinal direction of the tubular lattice structure (13) and interconnected by a plurality of struts (17) that collectively define a plurality of six-sided polygons; and a valve prosthesis (11) disposed inside the tubular lattice structure (13) of the stent (12A). - View Dependent Claims (17, 18, 19, 20, 21)
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22. A method for delivering and repositioning a stent (12A) in a lumen comprising:
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providing a stent (12A) including a tubular lattice structure (13) having a radial direction and a longitudinal direction, the tubular lattice structure (13) comprising; a middle zone (20) in communication with a distal end zone (21), the middle zone (20) and distal end zone (21) including a plurality of rods (16) positioned substantially in the longitudinal direction of the tubular lattice structure (13) and interconnected by a plurality of struts (17) that collectively define a plurality of six-sided polygon (18) in a delivery system (10), the delivery system (10) having a hollow, retractable hollow outer sheath (28) defining an opening (31) with the stent (12A) disposed therein adjacent the opening (31); constraining the stent (12A) in a collapsed form within a delivery system (10) including a hollow outer sheath (28) adapted to receive the stent (12A) therein in the collapsed form; delivering the stent (12A) percutaneously to a location in a lumen that requires repair or replacement; retracting the outer sheath (28) of the deployment system (10) relative to the stent (12A) and permitting the stent (12A) to expand from the collapsed form to an expanded form in the location; and monitoring an orientation and the location of the stent (12A) in the lumen. - View Dependent Claims (23, 24, 25)
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Specification