TVA Medical Inc. has received federal authorization to sell a medical device that could change how people suffering from serious kidney disease receive treatment. The Austin-based company announced June 22 that it has received "de novo" authorization from the U.S. Food and Drug Administration for its EverlinQ EndoAVF System, a minimally invasive piece of equipment that can give doctors hemodialysis access to a patient using magnetic catheters and radiofrequency energy. Once a person's kidneys can...