Analysis of motion in laparoscopic instruments

Seth Wolpert, W. Bosseau Murray, Paul J. Gorman, Omar S. Bholat

Research output: Contribution to conferencePaperpeer-review


In this study, a system is developed to assess the overall quality of movement, as applied to laparoscopic instruments. A laparoscopic forceps was fitted with a variable inductor as a key component of a Colpitts oscillator. Oscillator frequency is demodulated and digitized into a personal computer equipped with LabView, where trajectories are displayed, analyzed, and stored. In its first study, this system is used to assess velocity in one-dimensional control of instrument insertion depth. Test results indicate that no significant difference in instrument velocity was observed for dominant versus non-dominant hands or for insertion velocity from the first trial to the last. However, extraction of the instrument was seen to occur at significantly higher velocity than insertion, and extraction velocity actually increased over the duration of the trials.

Original languageEnglish (US)
Number of pages3
StatePublished - 1999
EventProceedings of the 1999 IEEE/EMBS 25th Annual Northeast Bioengineering Conference - West Hartford, CT, USA
Duration: Apr 8 1999Apr 9 1999


ConferenceProceedings of the 1999 IEEE/EMBS 25th Annual Northeast Bioengineering Conference
CityWest Hartford, CT, USA

All Science Journal Classification (ASJC) codes

  • Bioengineering


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