Systems, methods and devices for removing obstructions from a blood vessel
First Claim
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1. A system for removing an obstruction from a blood vessel, comprising:
- a catheter having a lumen;
an expandable capture element which is contained within the lumen of the catheter, the capture element being slidable within the lumen of the catheter between a collapsed position contained within the lumen and an expanded position in which the capture element is positioned outside the lumen; and
an obstruction engaging device having a filament, the filament being movable from a collapsed position to an expanded position, the obstruction engaging element passing through the catheter.
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Abstract
Devices and methods for removing an obstruction from a blood vessel are described. The devices are deployed in a collapsed condition and are then expanded within the body. The devices are then manipulated to engage and remove the obstruction.
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Citations
21 Claims
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1. A system for removing an obstruction from a blood vessel, comprising:
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a catheter having a lumen; an expandable capture element which is contained within the lumen of the catheter, the capture element being slidable within the lumen of the catheter between a collapsed position contained within the lumen and an expanded position in which the capture element is positioned outside the lumen; and an obstruction engaging device having a filament, the filament being movable from a collapsed position to an expanded position, the obstruction engaging element passing through the catheter. - View Dependent Claims (2, 7, 8, 9, 10, 11)
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3. The system of claim 3, wherein:
the expandable capture element has a support structure with a flexible cover attached to the support structure. - View Dependent Claims (4, 5, 6)
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12. A method of removing an obstruction from a blood vessel comprising the steps of:
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providing a catheter, an obstruction engaging device and an expandable capture element, the capture element being contained within a lumen of the catheter in a collapsed position, the capture element moving to an expanded position when positioned outside the lumen, the obstruction engaging device having a filament which is movable from a collapsed position to an expanded position; introducing the catheter into a blood vessel of a patient; engaging an obstruction with the filament; expanding the capture element; and moving the obstruction into the capture element with the engaging device after the engaging and expanding steps. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21-73. -73. (canceled)
Specification