The invention of the modern uroflowmeter by Willard M. Drake, Jr at Jefferson Medical College

Urology. 1998 Apr;51(4):671-4. doi: 10.1016/s0090-4295(97)00203-3.


The uroflowmeter is perhaps the most important and certainly the most commonly used urodynamic instrument currently employed in urologic practice. The modern uroflowmeter was invented by Willard M. Drake, Jr., in 1946 at the Jefferson Medical College. The original manuscript, entitled "The uroflometer: an aid to the study of the lower urinary tract," appeared in Journal of Urology in 1948. Drake obtained a US patent for the device, entitled "Uroflometer," in 1953. The flowmeter, originally manufactured by van Beek Industries, was more recently manufactured and distributed by Grewe Plastics. Drake is now retired and living in Nacogdoches, Texas.

Publication types

  • Biography
  • Historical Article
  • Portrait

MeSH terms

  • Equipment Design
  • History, 20th Century
  • Philadelphia
  • Rheology / history*
  • Rheology / instrumentation
  • Schools, Medical / history
  • United States
  • Urology / history*
  • Urology / instrumentation

Personal name as subject

  • W M Drake