A catheter devices/systems and methods therefrom are described herein for treating acute kidney in-jury, especially the contrast-induced acute kidney injury wherein the devices prevent the contrast dyes from entering into kidney and/or facilitate blood flow of kidney by said catheter system.

A catheter devices/systems and methods therefrom are described herein for treating acute kidney in-jury, especially the contrast-induced acute kidney injury wherein the devices prevent the contrast dyes from entering into kidney and/or facilitate blood flow of kidney by said catheter system.

Several embodiments of a catheter are described, having a balloon configured to slowly inflate and then quickly deflate to create an area of low pressure in the vessels. The balloon can be cycled near the vessels of the kidneys, thereby helping to draw out blood from the kidneys and enhance fluid processing to the bladder.

Several embodiments of a catheter are described, having a balloon configured to slowly inflate and then quickly deflate to create an area of low pressure in the vessels. The balloon can be cycled near the vessels of the kidneys, thereby helping to draw out blood from the kidneys and enhance fluid processing to the bladder.

Several embodiments of a catheter are described, having a balloon configured to slowly inflate and then quickly deflate to create an area of low pressure in the vessels. The balloon can be cycled near the vessels of the kidneys, thereby helping to draw out blood from the kidneys and enhance fluid processing to the bladder.

A dual balloon catheter having two independently inflatable balloons that provides complete or intermittent synchronous occlusion of blood vessels (such as the contralateral iliac veins, for example) via the balloons, which can be used for the purpose of decreasing the pressure in the inferior vena cava, which results in decongestion of the kidneys, liver/splanchnic compartment, lymphatic system, and the heart.

A blood flow assist system can include an impeller assembly including an impeller shaft and an impeller on the impeller shaft, a primary flow pathway disposed along an exterior surface of the impeller. The system can include a rotor assembly at a proximal portion of the impeller shaft. A secondary flow pathway can be disposed along a lumen of the impeller shaft. During operation of the blood flow assist system, blood can be pumped proximally along the primary flow pathway and the secondary flow pathway. The system can include a sleeve bearing distal the impeller. The system can include a drive unit having a distal end disposed distal a proximal end of the second impeller. The drive unit comprising a drive magnet and a drive bearing between the drive magnet and the impeller assembly.

A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation. The impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump also has an outflow cannula having an upstream end portion, a downstream end portion and an intermediate portion extending between the upstream end portion and the downstream end portion. The upstream end portion of the outflow cannula is connected to the pump casing such that blood is conveyed from the blood flow outlet of the pump casing into and through the intermediate portion of the outflow cannula towards the downstream end portion of the outflow cannula, wherein the downstream end portion has a blood flow outlet through which blood can exit the outflow cannula. At least a portion of the intermediate portion of the outflow cannula has an outer diameter that is larger than an outer diameter of the pump casing.

The present invention relates to a perfusion balloon catheter that has an expandable (enlargeable) inner lumen (114) with a novel design feature that allows a continuous flow through this enlarged lumen sufficient perfusion to the distal lumen of the blood vessel or air passage concurrent to and independently of balloon (104) inflation or deflation resulting in the prolonged dilatation and avoiding the high risks of blood or air flow stricture during balloon inflation.

Several embodiments of a catheter are described, having a balloon configured to slowly inflate and then quickly deflate to create an area of low pressure in the vessels. The balloon can be cycled near the vessels of the kidneys, thereby helping to draw out blood from the kidneys and enhance fluid processing to the bladder.