Interstim or Sacral Nerve Stimulation

A minimally invasive surgical option that requires the implantation of a small medical device to stimulate the sacral nerve is sacral nerve stimulation (SNS). Medtronic developed the InterStim system, and the U.S. approved it for use. Administration of Food and Drugs (FDA) in 1997. The InterStim system sends the sacral nerves situated just above the tail bone with moderate electrical pulses. Muscles and organs that contribute to urinary function are activated or inhibited by the sacral nerves. These involve muscles in the bladder, sphincter and pelvic floor. In order to suppress, or decrease, some bladder control functions, this electrical stimulation is intended to facilitate contact between the brain and the bladder.

InterStim and InterStim II neurostimulation devices used for sacral nerve  stimulation | Therapeutic Goods Administration (TGA)


  • Track 1-1 InterStim therapy
  • Track 2-2 Sacral nerve testing
  • Track 3-3 Limitations to sacral nerve therapy

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