Method and apparatus for allowing blood flow through an occluded vessel
AssigneePerflow Medical Ltd.
InventorsAvraham RAPAPORT, Gilad CIBULSKI
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Abstract
A device arranged to sustain and/or provide at least partial patency of a small blood vessel exhibiting an occlusion, the device constituted of a tubular body expandable from a first small diameter state for manipulation to, and through, the occlusion of the small blood vessel and a second large diameter state, the inner dimensions of the second large diameter state being no more than 50% of the diameter of the small blood vessel at the occlusion location, the device presenting a conduit for blood flow through the occlusion when in the large diameter state. In one embodiment the small blood vessel is an intracranial blood vessel.
Claims22
An endovascular device for treating an occlusion in a small blood vessel, comprising:
- an inner member which self-expands to a diameter large enough to allow blood flow through said inner member when said device is disposed at the occlusion;
- and
- an outer member comprised of extensions of structural filaments forming said inner member;
- said outer member configured to self-expand and to trap portions of said occlusion between said inner member and said outer member for retrieving said portions of said occlusion;
- said inner member and said outer member being axially aligned with respect to each other between a proximal end and a distal end of said device, said members coupled to each other at least on one of said proximal end and said distal end of said device.
A method of retrieving a clot from a blood vessel, comprising:
- introducing into said blood vessel a device comprising inner and outer members axially aligned with respect to each other;
- positioning said device at said occlusion such that blood is allowed to flow through said inner member to a region distal of said occlusion;
- trapping portions of said occlusion between said inner member and said outer member;
- and
- retracting said device to retrieve said occlusion.
Dependencies are inferred from the claim text.