System of functional electrical stimulation

摘要

The present invention discloses a functional electrical stimulation system comprising a primary power, a boost module, an energy storage section, an output control relay, an automatic discharge circuit, a foot/hand controlled switch, a current detection chip and a current limiting fuse. The boost module comprises n DC chopper circuits connected in series, and outputs a high voltage of 100-200V. According to an enable signal and a current detection signal, the output control relay disables/enables the DC boost module. The automatic discharge circuit discharges capacitance of the energy storage section automatically when the relay turns off the power input. The Foot/hand controlled switch, the current detection chip and the current limiting fuse form a triple accident protection circuit. The functional electrical stimulation system maximizes the intensity of electrical stimulation within the range that the human body can withstand. Meanwhile, it provides multiple security protection mechanisms and enhanced reliability to avoid danger during the use.

主权项

1. A functional electrical stimulation system comprising:
a primary power; a boost module connected with the primary power, and is configured to raise an output voltage of the primary power to a first preset voltage; an energy storage module connected with the boost module, and is configured to store electrical energy of the first preset voltage; and an electrical stimulation output channel connected with the energy storage module, and is configured to convert the electrical energy stored in the energy storage module to an electrical stimulation pulse and apply the electrical stimulation pulse to a diseased part of a user; wherein the boost module comprises a timer, a voltage-regulator diode and n DC chopper circuits connected in series; the timer is configured to generate control pulses to drive the n DC chopper circuits connected in series so as to increase the output voltage to the first preset voltage in a multi-stage mode; an output of a last stage DC chopper circuit is connected to the energy storage module via a negative electrode of the voltage-regulator diode, where n≧1.