... diffusable and escapes instantaneouslyinto air through any opening, including the tiny opening in the tip of a syringe. If the tip of a syringe full of CO2remains open, even while transferring the ... is within the vein and that the veinactually is patent. If the vein is patent and the Medi-Cut™is well within the vein, the soft J curved wire is reintro-duced through the Medi-Cut™ and advanced ... repeatedly and rapidly with a standard, sharp and open-tipped needle. The needle is introduced rapidly and deeply, know-ingly and purposefully trying to transect the vessel duringits introduction,...