The failure of synthetic polymeric medical devices - Durability and Reliability of Medical Polymers - page 188

9.6 Tip of thermoplastic nylon catheter showing bleed holes and
plastic deformation above distal bleed hole.
￿ ￿ ￿ ￿ ￿ ￿
9.7 Tuohy needle used for epidural anaesthetic with catheter at top.
intervention might cause greater damage than justified. The tip was sterile
and apparently presented no further risk to Mrs K. However, she thought
otherwise, and brought an action against the hospital, and the makers of
the catheter. in preparing expert reports, the failed catheter was clearly key
evidence for the case, one way or the other. When first examined, the long