Emboli filtration system and methods of use
OwnerMark C. Bates, Michael Hogendijkinventors
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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.
Claims22
Apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
- a guide wire having proximal and distal regions, and proximal and distal stops on the distal region;
- and
- a filter element configured to rotate and translate on the guide wire between the proximal and distal stops,
- wherein the filter element and the proximal stop are configured to permit advancement of the filter element from the proximal region by passing in vivo over the proximal stop, the proximal stop thereafter prohibiting proximal retraction of the filter element over the proximal stop.
A method for filtering emboli from blood flowing through a vessel, the method comprising:
- providing apparatus comprising a guide wire having a distal region including a distal stop, a proximal stop disposed proximal of the distal stop, and a filter element disposed for-translation on the guide wire;
- transluminally inserting the guide wire into a vessel;
- distally advancing the filter element in a contracted state over the proximal stop;
- and
- deploying the filter element, distal of the proximal stop and proximal of the distal stop, to engage a wall of the vessel and filter emboli out of blood flowing through the vessel.
Dependencies are inferred from the claim text.