ENISS: An epidural needle insertion simulation system

Seth Wolpert, W. Bosseau Murray, Sreelatha Bethi, Kausalya Yeranilli

Research output: Chapter in Book/Report/Conference proceedingConference contribution


To aid the training of anesthesiologists in the administering of epidural injections, a system was developed to characterize tactile feedback encountered during insertion and withdrawal of epidural needles. The system includes a platform upon which a sample is affixed, an epidural needle mounted to a pressure transducer by means of a Luer lock fitting, a stepper motor and screw drive to advance and retract the needle and a Lab-View based controller that inserts and withdraws the needle while monitoring the force on the pressure transducer. The system was tested on four media; free air, a medium-soft cheese, an apple, and a raw potato in order to demonstrate measurable differences in static and dynamic force across these samples. Test results indeed indicated clear and statistically significant differences between forces across all four media, and between insertion and withdrawal forces in all media except for free air.

Original languageEnglish (US)
Title of host publication33rd Annual Northeast Bioengineering Conference - Engineering Innovations in Life Sciences and Healthcare, NEBC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages2
ISBN (Print)1424410339, 9781424410330
StatePublished - 2007
Event33rd Annual Northeast Bioengineering Conference, NEBC - Stony Brook, NY, United States
Duration: Mar 10 2007Mar 11 2007

Publication series

NameProceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC
ISSN (Print)1071-121X


Other33rd Annual Northeast Bioengineering Conference, NEBC
Country/TerritoryUnited States
CityStony Brook, NY

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering


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