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Innervator NS 252, a new, constant current and programmable peripheral nerve stimulator.

A M Beaufort1, C J Rowaan, J M Wierda

  • 1Research Group for Experimental Anesthesiology and Clinical Pharmacology, University of Groningen, The Netherlands.

Acta Anaesthesiologica Belgica
|January 1, 1992
PubMed
Summary

The Innervator NS 252 peripheral nerve stimulator effectively delivers constant current for nerve stimulation up to 3.9 kohm resistance. Minor disadvantages include double burst stimulation types and lack of synchronization.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Medical Devices

Background:

  • Peripheral nerve stimulators require constant current delivery for effective supramaximal nerve stimulation.
  • Increasing resistance can challenge the performance of nerve stimulation devices.

Purpose of the Study:

  • To evaluate the performance of the new Innervator NS 252 programmable peripheral nerve stimulator.
  • To assess its ability to maintain constant current output under varying resistance loads.

Main Methods:

  • Testing the Innervator NS 252 programmable peripheral nerve stimulator.
  • Measuring constant current delivery accuracy up to 3.9 kohm resistance.
  • Evaluating pulse appearance and stimulation time interval consistency.

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Main Results:

  • The Innervator NS 252 successfully maintained a constant current of 80 mA up to 3.9 kohm resistance.
  • Pulse appearance was accurate with minimal variations in stimulation time intervals.
  • Different double burst stimulation types and lack of synchronization were noted as minor drawbacks.

Conclusions:

  • The Innervator NS 252 demonstrates reliable constant current output for peripheral nerve stimulation.
  • The device is suitable for applications requiring supramaximal nerve stimulation even with rising resistance.
  • Potential improvements could address the observed double burst stimulation and synchronization limitations.