Clot removal distal protection methods
AssigneeCerus Endovascular Limited
InventorStephen Griffin
Life of this patent
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Abstract
Provided herein are methods for protecting distal vessels from emboli during aspiration, the method comprising delivery and deployment of an emboli protection device which is advanced and placed distally relative to the clot burden and thus deep in the neurovascular bed until the device, once deployed, fully opposes a vessel wall creating a circumferential seal across the vessel. The methods utilizing the emboli protection device protect distal vasculature from vulnerable clot emboli which become dislodged during clot removal and/or aspiration and trapped in the emboli protection device.
Claims20
A method for protecting distal vessels from dislodged emboli comprising:
- a. advancing an aspiration catheter (90) proximal to clot burden (60),
- b. advancing a microcatheter (70) and guidewire (80) through the aspiration catheter (90) through and distal to the clot burden (60) in a vessel (40) to be treated,
- c. removing the guidewire (80),
- d. deploying an emboli protection device comprising a resilient mesh body (20) through the microcatheter (70) and placing the device distal to the clot burden (60) until it fully opposes the vessel (40) wall thereby creating a circumferential seal across the vessel (40), wherein the emboli protection device (20) is attached to an exchange length delivery wire (110),
- e. removing the microcatheter (70) and leaving the emboli protection device (20) and the exchange length delivery wire (110) in place in the vessel (40),
- f. commencing aspiration of the clot (60), whereby aspiration causes vulnerable clot emboli (100) to become dislodged and trapped in the emboli protection device (20).
A method for removing a clot burden from a blood vessel comprising:
- a. advancing an aspiration catheter (90) to a position proximal to the clot burden (60),
- b. advancing a microcatheter (70) and guidewire (80) to a position distal to the clot burden (60) in a vessel (40) to be treated,
- c. removing the guidewire (80),
- d. placing an emboli protection device comprising a resilient mesh body in position in a location distal to the clot burden and fully opposing the vessel (40) wall to create a circumferential seal across the vessel (40),
- e. removing the microcatheter (70) and leaving the emboli protection device (20) in place in the vessel (40),
- f. commencing aspiration of the clot burden(60).
Dependencies are inferred from the claim text.