Profile: E Tenn Urological Supplies specializes in urological medical supplies. Our products include intermittent catheters, closed system catheters, closed system catheter kits with supplies, external catheters, foley catheters, foley catheter kits, insertion & irrigation trays, leg bags, bedside bags, and urological accessories. Foley catheters, also known as indwelling catheters are designed to remain in the bladder to drain urine for short or long periods of time. The foley catheter has a balloon filled with sterile water to insure the indwelling urinary catheter stays in place within the bladder. All types of foley catheters are available with different size balloons.