Dual layer icad device
AssigneeNeuravi Limited
InventorsBrendan CASEY, Michael GILVARRY
Life of this patent
Estimating the term…
Abstract
A design bringing together mechanical thrombectomy and stenting for more efficient treatment of occlusions and stenotic lesions in the cerebral vasculature features a dual-layer setup. The outer layer consists of an expandable stent cage with large cell openings which can allow thrombus to pass through the openings into the inner expandable capture section layer. The clot capture section can be configured to grip and extract the occlusion. The outer cage is configured to be detached from the remainder of the device and left implanted as a stent to exert an outward radial force to support and/or dilate the region of stenosis. The device can have a distal fragment protection element to prevent the distal migration of elements liberated during the procedure.
Claims20
A device for treating occlusions and stenotic lesions in the vasculature, the device comprising:
- a capture section comprising:
- an elongate body;
- a proximal end;
- a distal end;
- a collapsed delivery configuration;
- and
- an expanded deployed configuration;
- and
- a stent cage comprising a collapsed delivery configuration and an expanded deployed configuration;
- wherein the stent cage is configured to be detachable from the device to remain implanted in the lesion when the capture section is removed from the lesion.
A device for treating an occlusive thrombus and areas of stenosis in the vasculature, the device comprising:
- a proximal shaft;
- and
- an outer cage comprising;
- a substantially tubular structure having a collapsed delivery configuration, an expanded deployed configuration;
- and a maximum radial dimension;
- wherein the outer cage is configured to exert an outward radial force when deployed to expand within a region of stenosis;
- wherein the outer cage is further configured to be detachable from the device to remain implanted in the stenosis.
A method for treating a stenotic lesion and obstructive thrombus, the method comprising the steps of:
- positioning an access catheter and a microcatheter in a vessel with the stenotic lesion and obstructive thrombus, the access catheter and microcatheter comprising hollow internal lumens;
- positioning a self-expanding outer cage in the microcatheter sized to exert an outward radial force on the lesion, the outer cage comprising a plurality of large cells and a detachment point configured to implant the outer cage within the vessel;
- positioning an expandable capture section with the outer cage, the capture section having a collapsed delivery configuration and an expanded deployed configuration;
- deploying the outer cage and capture section from the microcatheter to allow the thrombus and/or fragments thereof to pass radially inwards through cells of the outer cage;
- deploying the capture section from the microcatheter to capture the thrombus;
- detaching the outer cage at the detachment point and leaving the outer cage in the vessel as a stent in the expanded configuration;
- and withdrawing the capture section with the thrombus into the access catheter;
- and
- withdrawing the microcatheter, access catheter, and the capture section with captured thrombus from the patient.
Dependencies are inferred from the claim text.