Embolic protection basket
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsWilliam J. Harrison, Anuja H. Patel
Life of this patent
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Abstract
A basket for an embolic protection filtering device to be deployed within a body lumen for capturing embolic debris is disclosed. In one embodiment, a strut pattern forming the basket includes V-shaped struts having an internal radius at the apex with a kerf on each strut arm beginning at the radius and extending toward an opposite end of the strut. The apex may have a bulbous shape. In another embodiment, the strut arms of the basket include undulations. Also, the apices may be situated so that one apex is longitudinally staggered from an adjacent apex. The combination of features enables the basket to be crimped to a small profile while distributing stress away from the apices of the V's in the strut pattern.
Claims40
An expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- a cylindrical body formed with a plurality of slits to form a plurality of struts, wherein adjacent struts are connected together at alternating ends in a zigzag pattern;
- an apex disposed at each of the connected ends of the struts;
- an internal radius at each apex;
- and
- a kerf adjacent to each internal radius and formed in at least one strut extending toward the slit which forms the struts to reduce the width of at least one strut in the region adjacent to the internal radius.
A expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- a cylindrical body having a plurality of slits which form a plurality of struts, wherein adjacent struts are connected together at alternating ends in a zigzag pattern;
- an apex disposed at each of the connected ends of the struts, wherein one apex is staggered longitudinally relative to an adjacent apex to enable close packing of the struts when the basket is in a compressed state;
- means for reducing stress at the apex;
- and
- means for distributing stress formed into the struts.
A method for providing a expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- providing a cylindrical body;
- cutting slits into the cylindrical body to form a plurality of struts;
- forming the struts to connect at alternating ends to form a zigzag pattern;
- providing an apex having a bulbous shape at each of the connected ends of the struts;
- providing an internal radius at each apex;
- and
- cutting a kerf formed into the struts which extends from the internal radius towards the slit forming the struts to reduced the width of at least one strut in the area adjacent to the internal radius.
A expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- a cylindrical body formed with a plurality of slits to create a plurality of struts connected together at alternating ends in a series of V-shapes;
- an apex at each V-shape having a bulbous shape;
- a radius formed inside the plurality of apices;
- a kerf formed into the struts extending from the radius at the apices of the V-shapes toward the slit which forms the struts;
- and
- increased mass at a portion of the struts.
An expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- a body formed with a plurality of slits to create a plurality of struts, some of which are connected together;
- an apex formed at the ends of the connected struts;
- an internal radius at each apex;
- and
- a kerf formed at each apex along the internal radius extending toward and connecting with the slit which forms the struts.
An expandable filter basket for filtering embolic debris in a body lumen, the filter basket comprising:
- a cylindrical body formed with a plurality of slits to form a plurality of struts, wherein adjacent struts are connected together at alternating ends in a zigzag pattern, the zigzag pattern forming a proximal set of adjacent apices and a distal set of adjacent apices and adjacent proximal apices are staggered longitudinally relative to each other.
Dependencies are inferred from the claim text.