Emboli filtration system and methods of use
First Claim
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1. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
- a guidewire having a distal region and a stop on the distal region;
a filter element having a proximal coupling slidably coupled to the guidewire proximal of the stop and a distal coupling slidably coupled to the guidewire distal of the stop;
wherein the stop restricts translation of the filter element along the guidewire; and
wherein translation of the filter element is restricted on the guidewire proximally by the distal coupling abutting against the stop, and distally by the proximal coupling abutting against the stop.
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Abstract
An emboli filtration apparatus is provided comprising a guide wire having a filter element captured thereon, so that the guide wire is free to rotate and translate while the filter element remains stationary. The apparatus allows for movement and rotation of the guide wire as devices are advanced over it to treat occlusive disease, substantially without dislodging the filter element. In a preferred embodiment, the guide wire comprises a proximal stop configured to reposition the filter element during a medical procedure without having to remove or insert additional interventional devices.
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Citations
9 Claims
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1. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a guidewire having a distal region and a stop on the distal region; a filter element having a proximal coupling slidably coupled to the guidewire proximal of the stop and a distal coupling slidably coupled to the guidewire distal of the stop; wherein the stop restricts translation of the filter element along the guidewire; and wherein translation of the filter element is restricted on the guidewire proximally by the distal coupling abutting against the stop, and distally by the proximal coupling abutting against the stop. - View Dependent Claims (2, 3, 4)
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5. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a guidewire having a diameter and a distal region; a filter element including a proximal ring slidably coupled to the guidewire and a distal ring slidably coupled to the guidewire, the proximal ring having a bore greater than the diameter of the guidewire and the distal ring having a bore greater than the diameter of the guidewire; a stop disposed on the distal region of the guidewire intermediate the proximal ring and the distal ring; wherein stop has a diameter greater than the bore of the proximal ring; wherein the stop has a diameter greater than the bore of the distal ring; and wherein translation of the filter element is restricted on the guidewire proximally by the distal ring abutting against the stop, and distally by the proximal ring abutting against the stop. - View Dependent Claims (6, 7, 8, 9)
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Specification