Kidneys are a filter system. The main job of the kidneys is to remove waste from the blood and return the cleaned blood back to the body. Each minute about one litre of blood ï­ one-fifth of all the blood pumped by the heart - enters the kidneys through the renal arteries.
The volume of helium in the balloon has been estimated as being able to lift a total load, including the balloon material and the structure beneath it, of 65 pounds (29 kg) at sea level and 48 pounds (22 kg) at 8,000 feet (2,400 m).
Allergies to latex, tape and antiseptic, hold penis at 90 degree angle, twist if needed to pass sphincter, lubericate with numbing agent, advance all the way to end 8in prior to filling balloon, If pain remove fluid in balloon and advance further, reinflate, secure tubing.