Patent ID: 6042567
Filing Date: 2000-03-28
Classification: A61M

Abstract:
An apparatus for the introduction or removal of liquid based material to or from a blood vessel of a patient by a clinician comprising:means for connecting into the blood vessel to continuously introduce liquid based material into or remove liquid based material from the blood vessel, said connecting means fluidically sealed and self-sealing such that the liquid based material is prevented from escaping from the apparatus and coming into contact with the clinician at all times during installation and operation of the apparatus, the connecting means includes a guide mechanism which is adapted for connection into the blood vessel, the guide mechanism including a needle, the connecting means includes a catheter for transporting liquid based material, said catheter disposed about the guide mechanism, the connecting means includes a hollow central portion having a first end to which the catheter is sealingly fixed such that movement of the central portion and the catheter occurs in unison, and a flashback chamber fluidically connected to the central portion at a second end thereof, said needle extending through the central portion and into the flashback chamber by way of the first and second end of the central portion such that liquid based material flowing into the needle from the blood vessel fills the flashback chamber, said needle sealingly fixed to the flashback chamber and sealingly but slidingly connected to the central portion such that separation of the flashback chamber from the central portion and said catheter occurs without the escape of liquid based material from the central portion or the flashback chamber, said controlling means in fluidic connection with said central portion; andmeans for controlling whether liquid based material is continuously introduced into or removed from the blood vessel while the connecting means is in contact with the blood vessel without escape of the liquid based material therefrom, said controlling means in fluidic connection with said connecting means.