Methods for reducing distal embolization
First Claim
Patent Images
1. A method for the treatment of an occlusion in a blood vessel, comprising:
- prior to performing any therapeutic procedure for treating the occlusion, crossing the occlusion with a guidewire while aspirating blood, so that blood flows past the occlusion; and
performing a therapeutic procedure other than aspirating for treating the occlusion after crossing the occlusion with the guidewire.
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Reexamination
Accused Products
Abstract
A method for reducing distal embolization during insertion of devices to treat plaque, thrombi and other intravascular occlusions. Using a guide catheter, a guidewire is delivered to a site proximal to the lesion. An aspiration catheter is then introduced over the guidewire, and the two are moved together in a distal to proximal direction across the occlusion. The aspiration catheter is then moved in a proximal to distal direction while continuously aspirating, which prevents embolization of any particles which may be created during the crossing of the guidewire.
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Citations
26 Claims
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1. A method for the treatment of an occlusion in a blood vessel, comprising:
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prior to performing any therapeutic procedure for treating the occlusion, crossing the occlusion with a guidewire while aspirating blood, so that blood flows past the occlusion; and
performing a therapeutic procedure other than aspirating for treating the occlusion after crossing the occlusion with the guidewire. - View Dependent Claims (2, 20, 21)
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3. A method for treating a stenosis in a vessel, comprising:
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delivering a guidewire and a first catheter having a proximal end and a distal end into the vessel to a location near the stenosis, wherein when the first catheter and guidewire are both delivered, the guidewire extends through a lumen of the first catheter and the distal end of the first catheter is located proximal to the stenosis;
aspirating particles through the lumen of the first catheter prior to performing any therapeutic procedure for treating the occlusion;
after aspirating, delivering a therapy catheter to a location near the stenosis; and
performing treatment on the stenosis using the therapy catheter. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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22. A method for the treatment of an occlusion in a blood vessel, comprising:
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delivering a guidewire into the blood vessel to a location proximal to the occlusion;
delivering an aspiration catheter over the guidewire;
prior to performing any therapeutic procedure for treating the occlusion, advancing the guidewire across the occlusion while aspirating blood from the blood vessel through the aspiration catheter such that blood flows across the occlusion; and
performing a therapeutic procedure other than aspirating on the occlusion after crossing the occlusion with the guidewire. - View Dependent Claims (23, 24, 25, 26)
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Specification