Cartridge embolic protection filter and methods of use
First Claim
Patent Images
1. An embolic protection filter assembly, comprising:
- an elongate shaft having a distal end;
a stop member disposed on the shaft adjacent the distal end;
a filter frame coupled to the shaft, the filter frame having a tubular region disposed over the shaft, a proximal end region, a collar having a plurality of apertures therethrough adjacent the proximal end of the filter frame, and a strut region that defines one or more struts;
wherein the one or more struts extend through and are slidable relative to the apertures of the collar; and
a filter membrane coupled to the filter frame.
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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.
92 Citations
20 Claims
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1. An embolic protection filter assembly, comprising:
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an elongate shaft having a distal end;
a stop member disposed on the shaft adjacent the distal end;a filter frame coupled to the shaft, the filter frame having a tubular region disposed over the shaft, a proximal end region, a collar having a plurality of apertures therethrough adjacent the proximal end of the filter frame, and a strut region that defines one or more struts; wherein the one or more struts extend through and are slidable relative to the apertures of the collar; and a filter membrane coupled to the filter frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for delivering an embolic protection filter, comprising the steps of:
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providing a filter assembly, the filter assembly comprising; an elongate shaft; a filter frame coupled to the shaft, the filter frame having a proximal end region, a collar region having a plurality of apertures therethrough adjacent the proximal end region, a tubular region disposed over the shaft, and a strut region that defines one or more struts having flared ends, wherein the one or more struts extend through and are slidable within and relative to the collar region, and a filter membrane coupled to the filter frame; providing an actuator member having a distal end with one or more channels formed therein; engaging the actuator member with the flared ends of the one or more struts; providing an advancing member; engaging the advancing member with the tubular region of the filter frame; proximally retracting the actuator member so that the one or more struts slide within and relative to the collar region and the flared ends become positioned a distance from the collar region; and advancing the filter assembly through a body lumen to a target region. - View Dependent Claims (11, 12, 13, 14)
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15. An embolic protection filter assembly, comprising:
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an elongate shaft; a filter coupled to the shaft, the filter including a filter frame and a filter membrane coupled to the filter frame; wherein the filter frame includes a tubular region disposed over the shaft, a proximal end, a collar having an aperture therethrough adjacent the proximal end of the filter frame, and a strut region that defines a strut; wherein the strut extends through the aperture and is slidable relative to the aperture between a first position and a second position within the collar; and wherein the filter is configured to shift between an expanded configuration when the strut is in the first position and a collapsed configuration when the strut is in the second position. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification