Single-wire expandable cages for embolic filtering devices
First Claim
1. An embolic filtering device used to capture embolic debris in a body vessel, comprising:
- a filter assembly including an expandable cage adapted to move between an unexpanded position and an expanded position and a filter element attached to the expandable cage, the cage forming an structure capable of opening the filter element and maintaining the filter element open until the cage is placed in the unexpanded position; and
an elongated member having a distal end and a proximal end, the expandable cage being coupled to the guide wire near the distal end, wherein the cage is made from a continuous wire having a first end coupled to the guide wire and a second end coupled to the guide wire, the first end and second end being spaced apart along the longitudinal axis of the guide wire.
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Accused Products
Abstract
A single-wire expandable cage for an embolic filtering device includes a single cage wire coupled to an elongated member, such as a guide wire, and adapted to expand from an unexpanded position to an expanded position in a patient'"'"'s body vessel. The wire includes a first end and a second end which are coupled to the guide wire. A filter element is attached to the single-wire cage. The single-wire cage may be rotatably mounted to the guide wire or may be slidably disposed on the guide wire to allow the composite cage and filter element to be slid over the guide wire in an over-the-wire fashion once the guide wire is delivered to the target location in the patient'"'"'s vasculature. One embodiment of the single-wire cage utilizes an offset arrangement in which the guide wire remains extended along the wall of the body vessel once the single-wire cage is deployed. Another embodiment of the device centers the guide wire within the body vessel.
180 Citations
22 Claims
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1. An embolic filtering device used to capture embolic debris in a body vessel, comprising:
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a filter assembly including an expandable cage adapted to move between an unexpanded position and an expanded position and a filter element attached to the expandable cage, the cage forming an structure capable of opening the filter element and maintaining the filter element open until the cage is placed in the unexpanded position; and
an elongated member having a distal end and a proximal end, the expandable cage being coupled to the guide wire near the distal end, wherein the cage is made from a continuous wire having a first end coupled to the guide wire and a second end coupled to the guide wire, the first end and second end being spaced apart along the longitudinal axis of the guide wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification