SYSTEMS, METHODS AND DEVICES FOR REMOVING OBSTRUCTIONS FROM A BLOOD VESSEL
First Claim
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1. A method of removing an obstruction from a blood vessel, comprising the steps of:
- providing a obstruction engaging element having a collapsed position and an expanded position, the obstruction engaging element having at least one filament, the filament being in a substantially straight configuration when collapsed;
advancing the obstruction engaging element through a patient'"'"'s vascular system to an obstruction with the obstruction engaging element in the collapsed position; and
engaging the obstruction with the obstruction engaging element, the filament engaging the obstruction with a shape which extends from a proximal end toward a distal end, turns back toward the proximal end and again turns back and extends toward the distal end.
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Abstract
A system for removing an obstruction from a blood vessel includes an obstruction engaging element and an expandable capture element. The capture element preferably has a flexible cover and an expandable support structure. The engaging element engages the obstruction and moves the obstruction into the capture element. The capture element protects the obstruction when the obstruction is moved into the catheter.
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Citations
19 Claims
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1. A method of removing an obstruction from a blood vessel, comprising the steps of:
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providing a obstruction engaging element having a collapsed position and an expanded position, the obstruction engaging element having at least one filament, the filament being in a substantially straight configuration when collapsed; advancing the obstruction engaging element through a patient'"'"'s vascular system to an obstruction with the obstruction engaging element in the collapsed position; and engaging the obstruction with the obstruction engaging element, the filament engaging the obstruction with a shape which extends from a proximal end toward a distal end, turns back toward the proximal end and again turns back and extends toward the distal end. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for removing an obstruction from a blood vessel, comprising:
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a delivery element having a lumen; and an obstruction engaging element positioned in the lumen, the obstruction engaging element having a filament which has a collapsed position and an expanded position, the filament being in a substantially straight configuration when collapsed within the lumen of the delivery element, the filament being movable to a shape which extends from a proximal end toward a distal end, turns back toward the proximal end and again turns back and extends toward the distal end. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of removing an obstruction from a blood vessel, comprising the steps of:
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providing a obstruction engaging element having a collapsed position and an expanded position, the obstruction engaging element having at least one filament which is coated with fibrin; advancing the obstruction engaging element through a patient'"'"'s vascular system to an obstruction with the obstruction engaging element in the collapsed position; positioning the obstruction engaging element to engage the obstruction; and removing the obstruction with the obstruction engaging element.
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14. A device for removing an obstruction from a blood vessel, comprising:
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a delivery element having a lumen; and a obstruction engaging element having a collapsed position and an expanded position, the obstruction engaging element having at least one filament which is coated with fibrin, the obstruction engaging element being contained within the lumen of the delivery element. - View Dependent Claims (15, 16, 17)
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18. A method of removing an obstruction from a blood vessel, comprising the steps of:
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providing a capture element and an obstruction engaging element; moving the obstruction with the obstruction engaging element into the capture element, wherein the capture element has an inverting portion which inverts when the obstruction is moved into the capture element; and removing the obstruction from the patient.
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19-65. -65. (canceled)
Specification