Support structures for embolic filtering devices
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Abstract
An inner support structure for an embolic filtering device includes a tubular member having a first support region for supporting the proximal portion of a filter assembly and a second support region for supporting the distal portion of the filter assembly. The inner support structure facilitates rotation and restricts longitudinal movement of the embolic filtering device relative to a guide wire. Alternatively, the inner support structure includes a bushing coupled to the guide wire and a sleeve with a head on its proximal end positioned within a cavity in the bushing, thereby facilitating rotation and restricting longitudinal movement of the sleeve. The proximal portion of the filter assembly is supported on the sleeve. A sleeve for retaining the struts of an expandable cage of the embolic filtering device includes a central lumen for positioning the sleeve onto a guide wire and peripheral lumens for positioning and retaining the struts.
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Citations
52 Claims
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1-32. -32. (canceled)
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33. A sleeve for coupling an embolic filtering device to a delivery device, the sleeve comprising:
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a longitudinal member having a central lumen extending substantially longitudinally throughout the length of the longitudinal member, the central lumen being sized to receive a delivery device and being positioned substantially centered along a longitudinal axis of the longitudinal member; and
at least one peripheral lumen extending substantially longitudinally throughout the length of the longitudinal member and substantially parallel to the longitudinal axis of the longitudinal member, the at least one peripheral lumen being sized to receive and retain a strut of an embolic filtering device. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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40. A method of coupling a strut of an embolic filtering device to a delivery device, comprising:
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providing a delivery device;
providing a sleeve, the sleeve including, a longitudinal member having a central lumen extending substantially longitudinally throughout the length of the longitudinal member, the lumen being sized to receive a delivery device and being positioned substantially centered along a longitudinal axis of the longitudinal member, and at least one peripheral lumen extending substantially longitudinally throughout the length of the longitudinal member and substantially parallel to the longitudinal axis of the longitudinal member, the at least one peripheral lumen being sized to receive and retain a strut of an embolic filtering device;
providing an embolic filtering device having at least one strut;
inserting the at least one strut of the embolic filtering device into the at least one peripheral lumen of the sleeve;
coupling the at least one strut of the embolic filtering device to the at least one peripheral lumen of the sleeve;
inserting the delivery device into the central lumen of the sleeve; and
coupling the sleeve to the delivery device. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification