[A new system for catheterization of the V. cava of rats for long-term infusions (Implantofix)].

A new device for permanent venous catheterization (Implantofix) has been developed. It can subcutaneously be implanted in toto. The miniaturized catheter system which is involved in this device consists of a thin catheter tubing (silicone ID 0.6 mm), a coupling device, and a subcutaneous injection port. In all hitherto existing investigations comprising 200 rats and 25 rabbits the primary operation-related mortality was 2%, the infection rate was less than 1%, and the failure rate up to 3 weeks was found to be 8.9%. Additionally, the results of follow-up studies (up to 7 months post impl.) done with a few animals are reported.