ENDOVASCULAR VARIABLE AORTIC CONTROL CATHETER

摘要

Endovascular variable aortic control catheters (EVACC) are provided that are adapted to augment upstream blood pressure and regulate downstream blood flow for patients in shock. The EVACC devices provide improved treatment for truncal wounds, which may be used for example on a battlefield, thereby increasing survivability of injured soldiers. The devices are a catheter-based system having a proximal hand piece for controlled deployment of the device through a delivery sheath. A collapsible, wire framework supports an expandable and collapsible occlusion barrier. The wire basket and occlusion barrier expand to fit within the lumen of the aorta. Various movable elements are used to adjust an adjustable passageway to regulate controlled anterograde blood flow.

主权项

1. An endovascular variable aortic occlusion device to modulate anterograde blood flow, comprising:
a central guide wire; a distal end portion comprising
a first wire framework that is radially expandable and collapsible, wherein the first wire framework is configured to radially expand to a sufficient radial circumference to engage with an aortic wall within a lumen of an aorta to secure the device within the aorta; andan occlusion barrier surrounding at least a portion of the first wire framework and attached thereto, wherein an upper perimeter of the occlusion barrier contacts the aortic wall when the wire framework is radially expanded, and wherein the occlusion barrier includes at least one adjustable passageway therein having an available flow area to modulate the anterograde blood flow; a delivery sheath that is extensible and retractable, wherein a collapsed form of the first wire framework and the occlusion barrier of the distal end portion are contained therein during delivery of the device into the lumen of the aorta; and a proximal end portion comprising a hand piece having a stationary portion and a movable portion, wherein the movable portion controls a translational movement of the delivery sheath relative to the wire framework to enable unsheathing and radial expansion of the first wire framework, and optionally wherein the movable portion adjusts the available flow area of the at least one adjustable passageway to modulate the anterograde blood flow.