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External noninvasive electric cardiac stimulation

  • US 4,349,030 A
  • Filed: 07/10/1980
  • Issued: 09/14/1982
  • Est. Priority Date: 07/10/1980
  • Status: Expired due to Term
First Claim
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1. An external noninvasive electric cardiac stimulation system comprisinga pair of electrodes having nonmetallic skin-contacting members that provide low current density to reduce stimulation of local sensory nerves and resulting pain,a pulse generator electrically connected to said electrodes,said generator including means to provide constant current pulses without high current spikes that cause skeletal muscle contraction,said pulses being greater than 5 milliseconds in duration to reduce the threshold current required for cardiac stimulation, to permit the use of lower current pulses to provide effective stimulation at the same time that skeletal muscle contraction is reduced by the lower current, andmeans to activate said pulse generator to provide said current pulses.

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