Distal protection device
AssigneeSciMed Life Systems, Inc.
InventorsRobert L. Cassell, John M. K. Daniel, Thomas V. Ressemann
Life of this patent
Estimating the term…
Abstract
An emboli capturing system captures emboli in blood flowing through vasculature. The emboli capturing system includes a guidewire having a longitudinal axis and defining a lumen. An expandable member is coupled to a distal portion of the guidewire and has an interior which is in fluid communication with the lumen in the guidewire. An emboli capturing device is operably coupled to the expandable member and configured to deploy radially outwardly relative to the guidewire upon expansion of the expandable member.
Claims20
An emboli capturing system for introduction into vasculature to capture emboli in blood flowing in the vasculature, the emboli capturing system comprising:
- a guidewire having a longitudinal axis and defining a lumen along at least a portion thereof;
- an expandable member coupled to a distal portion of the guidewire and having an interior being in fluid communication with the lumen in the guidewire, the expandable member being configured to receive fluid through the lumen to expand and have fluid removed from the interior thereof to collapse;
- and
- an emboli capturing device operably coupled to the expandable member and configured to deploy radially outwardly relative to the guidewire upon expansion of the expandable member.
A dilatation system, comprising:
- a dilatation device configured to fragment a restriction in a blood vessel;
- and
- an emboli capturing system, longitudinally movable within the blood vessel relative to the dilatation device, the emboli capturing system comprising:
- a guidewire having a longitudinal axis and defining a lumen along at least a portion thereof;
- an expandable member coupled to a distal portion of the guidewire and having an interior being in fluid communication with the lumen in the guidewire, the expandable member being configured to receive fluid through the lumen to expand and have fluid removed from the interior thereof to collapse;
- and
- an emboli capturing device operably coupled to the expandable member and configured to deploy radially outwardly relative to the guidewire upon expansion of the expandable member.
A method of removing a restriction in a blood vessel comprising:
- providing a guidewire defining a lumen longitudinally therethrough with an inflatable member coupled to a distal portion of the guidewire and having an interior thereof in fluid communication with the lumen;
- providing an emboli capturing device, operably coupled to the expandable member to deploy radially outwardly relative to the guidewire when the expandable member is inflated, and to retract to a retracted position approximating the outer diameter of the guidewire;
- inserting the emboli capturing device in the blood vessel;
- advancing the emboli capturing device using the guidewire distally of the restriction;
- advancing, over the guidewire, a dilatation device;
- expanding the expandable member to deploy the emboli capturing device in an expanded position;
- fragmenting at least a portion of the restriction using the dilatation device;
- and
- capturing the fragmented portions of the restriction from blood in the blood vessel using the emboli capturing device.
Dependencies are inferred from the claim text.