Abstract: A catheter (100) for treating hypervolemia in a patient includes a luminal ingress (112) joined to a luminal egress (114) at a distal end portion (116) of the catheter having a closed distal end (102). The distal end portion is configured to at least temporarily reside within a vessel of the patient, the distal end portion including a semipermeable membrane. The luminal ingress is designed to convey an influent having a first osmotic concentration to the distal end portion. The semipermeable membrane is configured to pass blood-borne water from the vessel into the distal portion. The blood-borne water is absorbed by the influent to produce an effluent having a second osmotic concentration lower than the first osmotic concentration. Systems (200) with the catheter and methods for treating hypervolemia are also disclosed.

Abstract: A vascular implant device configured to decrease turbulence in blood flow through an arteriovenous fistula is described. The implant includes an arterial section having a straight hollow tube, a venous section having a curved hollow tube divided into an orthogonal portion at the juncture of the arterial section, a curved portion, and a straight extension portion, and having a continual lumen and lumen surface. The curved portion curves approximately 90 degrees with respect to the arterial section, and the extension portion extends substantially parallel to the arterial section. A plurality of flow-conditioning tabs are located along the lumen surface in arrangements precisely designed to convert the turbulent blood flow that enters the venous section into substantially laminar flow, and to minimize oscillatory shear stress on the venous endothelium as the blood flow exits the device and enters the vein.

Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.

Abstract: A vascular implant device configured to decrease turbulence in blood flow through an arteriovenous fistula is described. The implant includes an arterial section having a straight hollow tube, a venous section having a curved hollow tube divided into an orthogonal portion at the juncture of the arterial section, a curved portion, and a straight extension portion, and having a continual lumen and lumen surface. The curved portion curves approximately 90 degrees with respect to the arterial section, and the extension portion extends substantially parallel to the arterial section. A plurality of flow-conditioning tabs are located along the lumen surface in arrangements precisely designed to convert the turbulent blood flow that enters the venous section into substantially laminar flow, and to minimize oscillatory shear stress on the venous endothelium as the blood flow exits the device and enters the vein.

Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.

Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.

Abstract: Methods for making a magnesium biodegradable stent for medical implant applications, using magnesium foil or pure magnesium or magnesium alloys that are biodegradable and performing a lithographic technique to configure the features and dimensions of the magnesium foil, and rolling the magnesium foil to form a cylinder.