Endovascular variable aortic control catheter
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.
1 . An endovascular variable aortic occlusion device configured to modulate anterograde blood flow, comprising:
a longitudinal body having a distal end and a proximal end;
a wire basket coupled to the distal end of the longitudinal body and comprising a memory-shape material, the wire basket configured to be deployed from a contracted state to an expanded state such that the wire basket engages an inner wall of a patient artery;
a first occlusion barrier comprising a cup-like body having a plurality of interstitial openings, the cup-like body configured to surround at least a portion of an interior surface of the wire basket with another portion of the interior surface of the wire basket not being surrounded by the occlusion barrier, the first occlusion barrier expanding with the wire basket in the expanded state; and
a second occlusion barrier comprising a cup-like body having a centrally disposed aperture extending therethrough and a wire structure extending radially inwardly from the aperture, the second occlusion barrier expanding with the wire basket and the first occlusion barrier the wire basket is in the expanded state,
wherein distally-directed movement of the wire structure into the cup-like body of the second occlusion barrier increases a flow of blood through the wire basket, the plurality of interstitial openings of the first occlusion barrier, and the aperture of the second occlusion barrier.
2 . The endovascular variable aortic occlusion device of claim 1 , wherein no movement or proximally-directed of the wire structure of the second occlusion barrier restricts the flow of blood through the wire basket, the plurality of interstitial openings of the first occlusion barrier, and the aperture of the second occlusion barrier.
3 . The endovascular variable aortic occlusion device of claim 1 , further comprising:
a guidewire, a delivery sheath, or both.
4 . The endovascular variable aortic occlusion device of claim 1 , wherein the memory-shape material is a metal alloy, a polymer, or a combination thereof.
5 . The endovascular variable aortic occlusion device of claim 1 , wherein the cup-like body of the first occlusion barrier is a membrane.
6 . The endovascular variable aortic occlusion device of claim 5 , wherein the membrane comprises a polymer or a polyester.
7 . The endovascular variable aortic occlusion device of claim 1 , wherein the cup-like body of the second occlusion barrier is a membrane.
8 . The endovascular variable aortic occlusion device of claim 7 , wherein the membrane comprises a polymer or a polyester.
9 . The endovascular variable aortic occlusion device of claim 1 , wherein wire structure is centrally coupled to a guide wire.