The First and Only Automated Cerebral Spinal Fluid (CSF) Drain and Monitoring System. Developed by a Clinician to Help Solve Over/Under-Drainage, FLOWSAFE combines safety features with the added security of automated alarms for the busy hospital ICU. BeckerSmith Medical Transformed the old manually controlled CSF Drain into a Safe and Reliable Drainage & Monitoring System. No manually opening and closing stopcocks every hour on the hour, the device does all the work! FLOWSAFE can be used only for lumbar drainage at this time (v2.0 = lumbar & ventricular). It measures volume, total volume, flow, and drain rate! These safety features help prevent over/under drainage that may lead to subdural hematomas, brainstem herniation, or death.