Emboli protection devices and related methods of use
First Claim
1. A method of treatment of a blood vessel, comprising:
- advancing an evacuation sheath assembly into the blood vessel;
stopping normal antegrade blood flow in the blood vessel proximal to a stenosis;
advancing a non-occlusive guidewire to a position in the blood vessel distal the stenosis and leaving said position in the blood vessel free of occlusion;
advancing a therapeutic catheter into the blood vessel;
treating the stenosis with the therapeutic catheter;
removing the therapeutic catheter;
advancing an infusion catheter to a location distal to the stenosis after the step of removing the therapeutic catheter;
infusing the blood vessel with a fluid supplied by the infusion catheter; and
inducing retrograde flow within the blood vessel to carry the infused fluid and embolic material dislodged during the step of treating into the evacuation sheath assembly.
3 Assignments
0 Petitions
Accused Products
Abstract
An evacuation sheath assembly and method of treating occluded vessels which reduces the risk of distal embolization during vascular interventions is provided. The evacuation sheath assembly includes an elongated tube defining an evacuation lumen having proximal and distal ends. A proximal sealing surface is provided on a proximal portion of the tube and is configured to form a seal with a lumen of a guided catheter. A distal sealing surface is provided on a distal portion of the tube and is configured to form a seal with a blood vessel. Obturator assemblies and infusion catheter assemblies are provided to be used with the evacuation sheath assembly. A method of treatment of a blood vessel using the evacuation sheath assembly includes advancing the evacuation sheath assembly into the blood vessel through a guide catheter. Normal antegrade blood flow in the blood vessel proximate to the stenosis is stopped and the stenosis is treated. Retrograde blood flow is induced within the blood vessel to carry embolic material dislodged during treating into the evacuation sheath assembly. If necessary to increase retrograde flow, the coronary sinus may be at least partially occluded. Alternatively, antegrade flow may be permitted while flow is occluded at the treatment site.
523 Citations
19 Claims
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1. A method of treatment of a blood vessel, comprising:
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advancing an evacuation sheath assembly into the blood vessel; stopping normal antegrade blood flow in the blood vessel proximal to a stenosis; advancing a non-occlusive guidewire to a position in the blood vessel distal the stenosis and leaving said position in the blood vessel free of occlusion; advancing a therapeutic catheter into the blood vessel; treating the stenosis with the therapeutic catheter; removing the therapeutic catheter; advancing an infusion catheter to a location distal to the stenosis after the step of removing the therapeutic catheter; infusing the blood vessel with a fluid supplied by the infusion catheter; and inducing retrograde flow within the blood vessel to carry the infused fluid and embolic material dislodged during the step of treating into the evacuation sheath assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification