Support structures for embolic filtering devices
First Claim
1. An inner support structure for an embolic filtering device, the inner support structure comprising:
- a first support region positioned substantially longitudinally aligned with a longitudinal axis of the inner support structure, the first support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a cavity therebetween;
a second support region positioned substantially longitudinally aligned with the longitudinal axis of the inner support structure, the second support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a lumen therebetween, a cross section of the exterior surface of the second support region which is perpendicular to the longitudinal axis of the inner support structure being smaller than a cross section of the exterior surface of the first support region which is perpendicular to the longitudinal axis of the inner support structure;
a transition portion coupled to the second end of the first support region and the first end of the second support region, the transition portion forming a surface at the second end of the cavity of the first support region; and
at least one deflectable tab positioned on the first support region which is adapted to lock the inner support structure to a guide wire.
1 Assignment
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Accused Products
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.
659 Citations
18 Claims
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1. An inner support structure for an embolic filtering device, the inner support structure comprising:
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a first support region positioned substantially longitudinally aligned with a longitudinal axis of the inner support structure, the first support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a cavity therebetween; a second support region positioned substantially longitudinally aligned with the longitudinal axis of the inner support structure, the second support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a lumen therebetween, a cross section of the exterior surface of the second support region which is perpendicular to the longitudinal axis of the inner support structure being smaller than a cross section of the exterior surface of the first support region which is perpendicular to the longitudinal axis of the inner support structure; a transition portion coupled to the second end of the first support region and the first end of the second support region, the transition portion forming a surface at the second end of the cavity of the first support region; and at least one deflectable tab positioned on the first support region which is adapted to lock the inner support structure to a guide wire. - View Dependent Claims (2, 3, 4, 5)
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6. An inner support structure for an embolic filtering device, the inner support structure comprising:
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a first support region positioned substantially longitudinally aligned with a longitudinal axis of the inner support structure, the first support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a cavity therebetween; a second support region positioned substantially longitudinally aligned with the longitudinal axis of the inner support structure, the second support region including a substantially longitudinal tubular member having an exterior surface, a first end, a second end and a lumen therebetween, a cross section of the exterior surface of the second support region which is perpendicular to the longitudinal axis of the inner support structure being smaller than a cross section of the exterior surface of the first support region which is perpendicular to the longitudinal axis of the inner support structure; a transition portion coupled to the second end of the first support region and the first end of the second support region, the transition portion forming a surface at the second end of the cavity of the first support region; at least one deflectable tab positioned on the first support region which is adapted to lock the inner support structure to a guide wire; and at least one slot extending substantially longitudinally throughout the length of the second support region. - View Dependent Claims (7, 8)
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9. An inner support structure for an embolic filtering device, the inner support structure comprising:
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a first support region including a substantially cylindrical tubular member having an exterior surface, a first end, a second end and a cavity therebetween, the exterior surface of the first support region having a first diameter, the first support region being substantially longitudinally aligned with a longitudinal axis of the inner support structure, a cross section of the cavity of the first support region which is perpendicular to the longitudinal axis of the inner support structure having a substantially circular shape; a second support region including a substantially cylindrical tubular member having an exterior surface, a first end, a second end, a lumen therebetween, and at least one slot extending substantially longitudinally throughout the length of the second support region, the exterior surface of the second support region having a second diameter which is smaller than the first diameter of the first support region, the second support region being substantially longitudinally aligned with the longitudinal axis of the inner support structure, a cross section of the lumen of the second support region which is perpendicular to the longitudinal axis of the inner support structure having a substantially circular shape which is smaller than the cross section of the cavity of the first support region; a transition portion coupled to the second end of the first support region and the first end of the second support region, the transition portion forming a surface at the second end of the cavity of the first support region; and at least one deflectable tab positioned on the first support region which is adapted to lock the inner support structure to a guide wire. - View Dependent Claims (10)
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11. An embolic filtering device, comprising:
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an elongate guide wire including a proximal end and a distal end; a marker band positioned on the guide wire within the distal portion of the guide wire; and an inner support structure rotatably mounted onto the distal portion of the guide wire, the inner support structure including, a proximal support region having a substantially cylindrical tubular member with an exterior surface, a proximal end, a distal end and a cavity therebetween, the exterior surface of the proximal support region having a first diameter, the proximal support region being substantially longitudinally aligned with a longitudinal axis of the inner support structure, a distal support region including a substantially cylindrical tubular member having an exterior surface, a proximal end, a distal end and a lumen therebetween, the exterior surface of the distal support region having a second diameter which is smaller than the first diameter of the proximal support region, the distal support region being substantially longitudinally aligned with the longitudinal axis of the inner support structure, a transition portion coupled to the distal end of the proximal support region and the proximal end of the distal support region, the transition portion forming a surface at the distal end of the cavity of the proximal support region, and at least one deflectable tab positioned on the proximal support region; wherein the inner support structure is positioned along the distal portion of the guide wire, the guide wire is positioned within the cavity of the proximal support region and the lumen of the distal support region, the marker band is positioned within the cavity of the proximal support region proximate the surface at the distal end of the cavity of the proximal support region; and wherein the at least one deflectable tab of the proximal support region is deflected radially into the cavity of the proximal support region, and an apex on the at least one deflectable tab projects into the cavity of the proximal support region at a position proximal to the marker band. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification