Patent ID: 9597497
Date: 2017-03-21
CPC Classifications: A43B,A61B,A61N

Claim:
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.