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Wireless footswitch and functional electrical stimulation apparatus

  • US 9,597,497 B2
  • Filed: 10/22/2012
  • Issued: 03/21/2017
  • Est. Priority Date: 10/27/2011
  • Status: Active Grant
First Claim
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1. A shoe insole for use in functional electrotherapy having a cavity opening to its lower face and a wireless footswitch module located in said cavity, wherein said footswitch module comprises:

  • a load, force or pressure sensor;

    a microcontroller for receiving signals from the sensor indicating phase of walking and having a power-saving mode in which a microprocessor or core forming part of said microcontroller can be disabled while inputs continue to be active;

    a wireless transceiver in communication with the microcontroller for transmitting sensor state information;

    a battery for providing power; and

    an accelerometer for monitoring user activity/inactivity and controlling entry of the microcontroller into working and power-saving modes;

    wherein the accelerometer is a 3-axis accelerometer having FIFO technology for minimising host processor load, has low power or standby modes for intelligent motion-based power management and has an SPI digital interface for providing output data.

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