[Clinical use and comparative study of Ulmer drainage and of the usual Redon tissue drainage].

After discussing the shortcomings of the usual Redon drainages and the description of our own technique of vacuum-tissue suction drainage, there follows a report about a comparative examination between Redon drainages and the new 'Ulmer drainage'. Up to now the superiority of the Ulmer drainage was proven only by calculation and experiment, now this fact can be fully confirmed by a succession of clinical examinations. By inserting both types of drainages in one surgical wound, the Ulmer drainage delivered on the first day 1.5 times; on the second and third day, almost 2.5 times the amount of secretion compared with the usual Redon drainage.