A temporary emboli diversion device, comprising: an elongate flexible tubular body, having a proximal end, a distal end, and at least one lumen extending therethrough; an elongate, flexible shaft axially movably extending through the lumen and having a proximal end and a distal end; a deflector on the distal end of the flexible shaft; the deflector comprising a flexible frame extending around the periphery of the deflector and having a length extending between a first end and a second end and a width extending between a first side and a second side, and a membrane attached to the periphery of the deflector, wherein the deflector is convertible between a folded configuration in which both the first end and the second end point in the distal direction and are located distally from the distal end of the flexible shaft, and a deployed configuration in which the first and second ends point in lateral directions, the folded configuration being a first configuration for positioning within the lumen and the deployed configuration being a second configuration for deployment; wherein the deflector in the second configuration comprises a length measured transverse to the shaft which exceeds a width measured perpendicular to the length, wherein the frame is connected to the flexible shaft by first and second struts, wherein the first and second struts, in the deployed configuration, curve radially outwardly in the distal direction so as to assist in expanding the deflector for deployment from the folded configuration into the deployed configuration and contracting the deflector for removal from the deployed configuration back into the folded configuration as the deflector is drawn proximally into the tubular body. an elongate flexible tubular body, having a proximal end, a distal end, and at least one lumen extending therethrough; an elongate, flexible shaft axially movably extending through the lumen and having a proximal end and a distal end; a deflector on the distal end of the flexible shaft; the deflector comprising a flexible frame extending around the periphery of the deflector and having a length extending between a first end and a second end and a width extending between a first side and a second side, and a membrane attached to the periphery of the deflector, wherein the deflector is convertible between a folded configuration in which both the first end and the second end point in the distal direction and are located distally from the distal end of the flexible shaft, and a deployed configuration in which the first and second ends point in lateral directions, the folded configuration being a first configuration for positioning within the lumen and the deployed configuration being a second configuration for deployment; wherein the deflector in the second configuration comprises a length measured transverse to the shaft which exceeds a width measured perpendicular to the length, wherein the frame is connected to the flexible shaft by first and second struts, wherein the first and second struts, in the deployed configuration, curve radially outwardly in the distal direction so as to assist in expanding the deflector for deployment from the folded configuration into the deployed configuration and contracting the deflector for removal from the deployed configuration back into the folded configuration as the deflector is drawn proximally into the tubular body.