Evaluation of the eZono 4000 with eZGuide for ultrasound-guided procedures

Expert Rev Med Devices. 2015 May;12(3):251-61. doi: 10.1586/17434440.2015.995095. Epub 2014 Dec 29.


Ultrasound-guided procedures are increasingly common in a variety of acute care settings, such as the operating room, critical care unit and emergency room. However, accurate judgment of needle tip position using traditional ultrasound technology is frequently difficult, and serious injury can result from inadvertently advancing beyond or through the target. Needle navigation is a recent innovation that allows the clinician to visualize the needle position and trajectory in real time as it approaches the target. A novel ultrasound machine has recently been introduced that is portable and designed for procedural guidance. The eZono 4000™ features an innovative needle navigation technology that is simple to use and permits the use of a wide range of commercially available needles, avoiding the inconvenience and cost of proprietary equipment. This article discusses this new ultrasound machine in the context of other currently available ultrasound machines featuring needle navigation.

Keywords: GPS; eZono™; needle navigation; portable; regional anesthesia; ultrasound guidance.

Publication types

  • Review

MeSH terms

  • Anesthesia / methods
  • Diagnosis, Computer-Assisted / instrumentation*
  • Equipment Design
  • Equipment and Supplies
  • Humans
  • Magnetic Fields
  • Needles
  • Point-of-Care Testing
  • Surgical Procedures, Operative / methods
  • Ultrasonography, Interventional / instrumentation*
  • Ultrasonography, Interventional / methods*