Abstract: An automatic flow regulator for use in a liquid management system is provided, as well as a method for its use. More particularly, a flow regulator and a method for its use are provided which can effectively regulate the flow of liquid in, e.g., an intravenous application. The flow regulator further provides de-bubbling features. For example, a deflector such as a dripdish and an air barrier are provided which serve to reduce the amount of bubbles in a liquid reservoir, greatly enhancing patient safety. The liquid may advantageously be an imaging liquid such as contrast.

Abstract: A pressurized intravenous fluid delivery apparatus that operates as a closed system incorporating a waste component to avoid the accidental injection of air. The apparatus comprises a fluid reservoir under pressure, a manifold with a series of stopcock, an exhaust means in fluid connection with both the fluid reservoir and the manifold by means of a dual check valve, and a cannula and syringe means for injecting fluid into a patient. The closed system facilitates the flushing of blood and air out a catheter without the necessity of disconnecting any part of the apparatus and thereby risking exposure to air or risking physician contact with body fluids. The system is useful for delivering any quantity of one or more fluids under pressure, while avoiding the injection of air.

Abstract: A fluid delivery apparatus for administering contrast media or other fluids to a patient. The apparatus includes a reusable main supply system, a disposable fluid administration system, and a transfer syringe. The transfer syringe is used to transfer fluid from the main supply system to the fluid administration system. The administration system includes an air valve and filter to allow for complete drainage of the fluid in the fluid administration system while reducing the likelihood of contaminating the fluid.

Abstract: A catheter and a method of manufacture of a catheter which includes a relatively rigid body and a relatively soft tip for decreasing the likelihood of injury or damage to tissue such as the wall of a blood vessel or the heart when the catheter is used as a part of an invasive medical procedure such as angiography or angioplasty. The method includes the use of a core material which is sufficiently resistant to high temperatures to allow extrusion of catheter material thereover in the process of forming the catheter. The core controls the catheter's inside diameter, and is sufficiently heat resistant to allow its use through all subsequent manufacturing process steps involving the formation of the soft tip.