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US 2019/0336313 A1Published application
Method and apparatus for occlusion removal
AssigneePerflow Medical Ltd.
InventorsDavid FERRERA, Avraham RAPAPORT, Gilad CIBULSKI, Allon REITER
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Abstract
A system for removing a thrombus. The system includes an expandable device that maintains axially fixed engagement with the thrombus. The expandable device applies a first force to the thrombus according to surrounding vessel size. The expandable device applies a second force to the thrombus according to an increased vessel size to maintain axially fixed engagement.
Claims28
A method for removing a thrombus, the method comprising:
- actuating, from outside the body, an elongate device to expand an expandable member coupled to the elongate device to a first configuration having a first nominal diameter to apply a first engagement force against the thrombus such that a portion of the expandable member fixedly engages a surface of the thrombus by compression of the thrombus between the expandable member and a vessel wall;
- retracting the expandable member while the portion of the expandable member remains fixedly engaged with the surface of the thrombus, causing the thrombus to retract;
- retracting the expandable member through a vessel having changes in diameter or direction;
- actuating the elongate device to expand the expandable member to a second configuration having a second nominal diameter that is greater than the first nominal diameter to apply a second engagement force against the surface of the thrombus to sufficiently maintain the fixed engagement with the portion of the expandable member to continue retracting the thrombus through a vessel portion of greater diameter, reducing a risk of losing the thrombus.
1 more element
Dependencies are inferred from the claim text.