Implantable port catheter systems are becoming increasingly important,
as they often permit outpatient treatment for many indications that w
ould otherwise require hospitalization. Moreover, they also increase t
he safety/reliability of infusion therapy in critical inpatients. For
a variety of reasons, the materials used so far, i.e. steel, titanium
and various plastics have not been completely satisfactory. The main d
isadvantage of metallic systems is the formation of artefacts in tomog
raphic images, while the shortcomings of plastics are mechanical, e.g.
chip formation and early membrane failure. Against this background, a
port catheter system made of alumina ceramic, which is largely free o
f the disadvantages of the other materials, was developed. The expecte
d advantages in terms of complication rate and radiological artefacts,
were fully confirmed by the evaluation of 160 monitored patients.