Polycarbonate
resin used in infusion pumps. A lipid-resistant
polycarbonate resin manufactured by Bayer Corp. (Pittsburg, PA; 412/777-2000)
provides the material for the Discofix line of three-way stopcocks and
manifolds produced by B. Braun Medical (Bethlehem, PA; 877/428-7766) for
infusion systems. The Makrolon Rx-1805 polycarbonate displays stress-crack
resistance when it makes contact with lipid emulsions. The dimensional
stability of the resin also ensures that tube connections remain permanently
secure. B. Braun's three-way stopcocks are supplied in an individual pack
sterilized with gamma rays or EtO. The transparency of the polycarbonate
facilitates fast, accurate visual monitoring of the infusion procedure
in the clinical setting. Makrolon Rx-1805 complies with ISO 10993-1 for
biocompatibility of plastics used in contact with human tissue for 30
days or fewer.