Critical Assist are available in a wide range and can be used for most of the patients starting from infants to adults. The products possess a geometric soft-tip design coupled with soft-blended bio-compatible material, to ensure safe and easy insertion. These Central Venous Catheters are made with a specific polyurethane material that provides strength during insertion and at the same time softens up when it enters inside the body. The benefit of this feature is that the doctor experiences better control during catheter insertion, and also, the patient feels less pain during the process. The Central Venous Catheters from this company has a soft-tip at the distal end, which facilitates easy navigation of the catheters within the vessels and does not cause any irritation. Multi-Lumen Central Venous Catheters Supplied by Critical Assist can be used with Y-Valve needles and also with straight introducer needles, which are commonly available. When used with Y-Valve needles, guide-wire insertion is made easy, while preventing air embolism and the backflow of blood. This guide-wire is stiff providing good torque during insertion and has a soft, flexible tip that prevents perforation. The material used in these Central Venous Catheters is radiopaque with clear, definite marking, thus enabling correct placement on the catheter tip.