• Conf Proc IEEE Eng Med Biol Soc · Jan 2009

    Combined direct current and high frequency nerve block for elimination of the onset response.

    • Kevin L Kilgore, Emily A Foldes, D Michael Ackermann, and Niloy Bhadra.
    • Dept. of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA. klk4@case.edu
    • Conf Proc IEEE Eng Med Biol Soc. 2009 Jan 1;2009:197-9.

    AbstractNerve conduction in peripheral mammalian nerves can be blocked by high frequency alternating current (HFAC) waveforms. However, one of the disadvantages of HFAC block is that it produces an intense burst of firing in the nerve when the HFAC is first turned on. This is a significant obstacle to the clinical implementation of HFAC block. In this paper we present a method to produce HFAC block without the onset response, using a combination of direct current (DC) and HFAC block. This method was experimentally evaluated in an in-vivo mammalian model. Successful no-onset HFAC block was obtained using a DC block of 200 microA and an HFAC block of 30 kHz at 10 Vp-p. This may allow HFAC block to be used in clinical applications for pain relief.

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