Cartridge embolic protection filter and methods of use
First Claim
Patent Images
1. An embolic protection filter comprising:
- a filter frame slidably and rotationally disposed along an elongate member, said filter frame having a proximal end and a distal end;
a plurality of retaining collars coupled to the proximal end of said filter frame;
a plurality of expandable struts each having a proximal section and a distal section, the proximal section adapted to slide within the retaining collars, the distal section secured to the distal end of said filter frame, wherein, in use, said plurality of expandable struts are biased to radially expand from a collapsed, radially compact position to an open, radially expanded position; and
a filter mesh coupled to said plurality of expandable struts for filtering embolic material.
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Abstract
An embolic protection filter having a reduced profile for placement within a body lumen is disclosed. An embolic protection filter in accordance with the present invention includes a filter frame slidably and rotationally disposed along a guidewire, a plurality of retaining collars coupled to a proximal end of the filter frame, a plurality of expandable struts each having a proximal section adapted to slide within a corresponding retaining collar, and a filter mesh coupled to a distal section of the expandable struts for filtering embolic debris.
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Citations
37 Claims
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1. An embolic protection filter comprising:
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a filter frame slidably and rotationally disposed along an elongate member, said filter frame having a proximal end and a distal end;
a plurality of retaining collars coupled to the proximal end of said filter frame;
a plurality of expandable struts each having a proximal section and a distal section, the proximal section adapted to slide within the retaining collars, the distal section secured to the distal end of said filter frame, wherein, in use, said plurality of expandable struts are biased to radially expand from a collapsed, radially compact position to an open, radially expanded position; and
a filter mesh coupled to said plurality of expandable struts for filtering embolic material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An embolic protection filter comprising:
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a filter frame slidably and rotationally disposed along an elongate member, said filter frame having a proximal end and a distal end;
a plurality of retaining collars coupled to the proximal end of said filter frame;
a plurality of self-expanding struts each having a proximal section and a distal section, the proximal section adapted to slide within the retaining collars, the distal section secured to the distal end of said filter frame, wherein, in use, the plurality of self-expanding struts are biased to radially expand from a collapsed, radially compact position to an open, radially expanded position;
a filter mesh coupled to said plurality of self-expanding struts for filtering embolic material; and
an actuator mechanism for actuating said plurality of self-expanding struts between the collapsed, radially compact position and the open, radially expanded position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An embolic protection filter comprising:
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a guidewire having a proximal end, a distal end, and a distal stop;
a filter frame slidably and rotationally disposed along the guidewire, said filter frame having a proximal end and a distal end;
a plurality of retaining collars coupled to the proximal end of said filter frame, each of said plurality of retaining collars defining a lumen;
a plurality of self-expanding struts each having a proximal section and a distal section, the proximal section adapted to slide within the lumen formed by a corresponding one of said plurality of retaining collars, the distal section secured to the distal end of said filter frame, wherein, in use, the plurality of self-expanding struts are biased to radially expand from a collapsed, radially compact position to an open, radially expanded position;
a filter mesh attached to the distal section of each one of said plurality of self-expanding struts, said filter mesh comprising a blood permeable sac;
an actuator mechanism for actuating said plurality of self-expanding struts between the collapsed, radially compact position and the open, radially expanded position; and
an advancing member for advancing the embolic protection filter along the guidewire. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of filtering embolic material from a body lumen, comprising:
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providing an embolic protection filter comprising a filter frame slidably and rotationally disposed along a guidewire, said filter frame having a proximal end and a distal end;
a plurality of retaining collars coupled to the proximal end of said filter frame, a plurality of expandable struts each having a proximal section and a distal section, the proximal section adapted to slide within the lumen formed by a corresponding one of said plurality of retaining collars, the distal section secured to the distal end of said filter frame; and
a filter mesh coupled to said plurality of expandable struts;
inserting the guidewire into a body lumen across a lesion;
advancing the embolic protection filter along the guidewire to a desired location distal the lesion;
actuating the plurality of expandable struts from a collapsed, radially compact position to an open, radially expanded position with the body lumen; and
collecting dislodged embolic material within the body lumen. - View Dependent Claims (37)
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Specification