Steel canula for spinal and peridural anestesia

摘要

A steel cannula (10) for spinal and peridural anesthesia so as to optimize that it combines the advantages of a thin tube with improved peak localization by facilitated review of the Liquorrückflusses, the invention provides that the Au ßendurchmesser of the cylindrical tube (11) and the diameter of the tube channel (15) on a front zy-cylindrical end portion (11a; 15a) are reduced and that a in the tube channel (15) plug-forming mandrel (30) the narrowed pipe duct end portion (15a) circumferentially substantially fills.