Neonatal Anorectal Tonometer with Disposable/Detachable Tip

Case ID:

This technology is a neonatal anorectal tonometer that involves a detachable, fluid-filled tip with a quick release system involving (magnet & plate) that connects the tip to a force sensor inside the handle of the device. This device can be used as a substitute for digital rectal exams.

Cauda Equina Syndrome (CES) occurs when the Cauda Equina nerve fibers become irritated by pressure or inflammation. The treatment for Cauda Equina is immediate surgical intervention. The absence or reduction of rectal tone is used in the diagnosis of several neurological conditions including CES. This invention describes a neonatal anorectal tonometer, intended to measure rectal tone in adults and newborns caused by CES.


  • Routine diagnostic tool
  • Intra-operative monitor as real-time feedback of delicate surgery progression
  • Research
  • Wide variety of nerve conditions can benefit from this portfolio of applications


  • Quantitative measurement of rectal tone allows for better comparison and treatment
  • Faster and easier evaluations save time for diagnosticians and increase testing access
  • Increased accuracy through use of a systematic tool and minimizes subjective inspection
  • Consistent results independent of examiner behavior and universally applicable data
Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Eniko Enikov